leadtech

Role Description We are looking for an Ad Monetization Specialist who brings the analytical rigor and optimization mindset from the gaming world to elevate the performance of our advertising stack across mass-market consumer applications. This role is key to maximizing ad revenue through the strategic management of mediation, waterfalls, floor prices, and ad network relationships, working closely with the Product, UA, and Data teams. Key Responsibilities - Ad Mediation & Waterfall Management - Design, implement, and optimize waterfalls on mediation platforms (AppLovin MAX, IronSource/Unity LevelPlay, AdMob / Google Ad Manager). - Configure and manage dynamic floor prices and real-time bidding (in-app bidding) to maximize eCPM. - Evaluate and onboard new ad networks and programmatic demand. - Revenue Analysis & Optimization - Monitor key KPIs: eCPM, fill rate, ARPDAU, ad revenue per session, impression share. - Run cohort analyses and A/B tests on ad formats, frequencies, and integrations. - Identify data-driven improvement opportunities using BI tools (Looker, BigQuery, Amplitude). - Ad Format Strategy & Advertising UX - Define the ad format strategy per app: interstitials, rewarded, banners, native, MREC. - Ensure the right balance between ad monetization and user experience, reducing ad-induced churn. - Collaborate with Product to properly integrate ad placements into the user flow. - Partner Relations & Negotiation - Manage relationships with ad networks (Meta Audience Network, AppLovin, IronSource, Mintegral, Vungle, InMobi, etc.). - Negotiate guaranteed deals and header bidding arrangements with strategic partners. - Stay up to date on programmatic market trends and policy changes (ATT, privacy). - Compliance & Inventory Quality - Ensure compliance with App Store, Google Play, and individual ad network policies and guidelines. - Implement brand safety measures, ad quality filters, and advertising inventory review processes. Qualifications - 3+ years of experience in mobile app advertising monetization. - Demonstrable gaming experience (mandatory requirement): knowledge of waterfalls in F2P games, rewarded ad management, and mixed monetization logic (IAP + Ads). - Demonstrated experience in or transition to non-gaming apps (lifestyle, health, utilities, tools). - Degree in Marketing, Engineering, Statistics, Economics, or a related field. MBA or programmatic advertising training is a plus. Requirements - Proficiency in at least one mediation platform: AppLovin MAX, IronSource LevelPlay, or AdMob. - Familiarity with monetization SDKs and their integration (iOS / Android). - Advanced data analysis skills: SQL, BigQuery, or Looker is a strong plus. - Knowledge of ATT (App Tracking Transparency), SKAdNetwork, and their impact on fill rate and targeting. - Understanding of the programmatic ecosystem: DSPs, SSPs, PMPs, Open Auction. Benefits - Competitive compensation package + benefits (flexible hours, health insurance, training). - Growth and career development with personalized internal training and an annual budget for external learning opportunities. - Flexible schedule with flextime and the option of working full remote or from our Barcelona office. - Comprehensive benefits including competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services). - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! - Unique office perks including free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views. - Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary.

Role Description As part of AI-LAB as a Full-Stack Developer, you will be instrumental in building and scaling our AI products. You will own features end-to-end across a modern Next.js frontend and our NestJS backend services, delivering a seamless and powerful user experience. You'll be joining a team with a ship-fast mindset and a modern, carefully curated tech stack. - Develop and maintain features on our Next.js (App Router) frontend using TypeScript, SWR, Tailwind, and a component-driven design system, with full internationalization (i18n) support. - Design, implement, and maintain RESTful APIs with NestJS (TypeScript) to manage authentication, data processing, billing, usage tracking, and orchestration of AI workflows. - Own backend services end-to-end: from schema design and migrations to deployment and observability, and contribute to new services as the product surface grows. - Integrate and maintain third-party SDKs and APIs that power critical product flows, including payment processing, authentication, analytics, and messaging. - Build AI agents and tools using the Claude SDK and Model Context Protocol (MCP): giving LLMs real-time access to data, APIs, and tools so they can take meaningful actions on behalf of users. - Contribute to schema design with Prisma and PostgreSQL, write and review migrations, and reason carefully about data models that evolve safely over time. - Implement and maintain feature flags, A/B experiments, and analytics events so product decisions are driven by data. - Handle incoming webhooks and asynchronous task processing with the rigor required for payment-critical and PII-handling code paths (idempotency, retries, fault tolerance). - Collaborate with AI product managers and AI specialists to translate complex requirements into robust, scalable features — and push back on complexity when a simpler path exists. - Collaborate on application deployment and help maintain our cloud infrastructure. Qualifications - TypeScript Proficiency: Highly proficient in TypeScript across both frontend (React/Next.js) and backend (Node.js/NestJS) environments. - Frontend Expertise: Strong experience with React and Next.js (App Router): Server Components, route handlers, streaming, metadata, i18n, and modern data-fetching patterns (SWR or equivalent). - Backend Expertise: Solid experience building production REST APIs with NestJS (or comparable Node frameworks like Express/Fastify): modules, DI, guards, interceptors, DTO validation. - Database Skills: Experience with PostgreSQL and an ORM such as Prisma. Comfortable writing and reviewing migrations, reasoning about transactions, and designing schemas that evolve safely. - API Integration Depth: Real experience integrating third-party SDKs: handling webhooks, idempotency, retries, and asynchronous fulfillment. - Problem-Solving Mindset: Collaborative, pragmatic, willing to challenge assumptions and surface tradeoffs before writing code. - Passion for AI and High Agency: Genuine enthusiasm for AI products, and a desire to bring new techniques and tools into the team proactively. - Creativity and Proactivity: You enjoy proposing features, finding creative solutions, and improving the user experience without being told to. - A serious self-learner who adapts to new tools and platforms in days, not weeks. Requirements - Nice to Have: - Prior experience working on payment / subscription systems. - Familiarity with monorepo tooling (pnpm workspaces, Turborepo, Nx). - Experience with BigQuery and event-pipeline analytics. - Familiarity with Tailwind and component-driven design systems. - Knowledge of cloud platforms such as Google Cloud Platform (GCP). - Experience with feature-flag systems. - Previous work on AI products or LLM-powered applications. Benefits - High-Impact Role: Be a key player in a small, agile team building greenfield projects with the potential to transform an industry. - Modern Technology: Work with a cutting-edge, carefully selected tech stack with a focus on best practices. - Growth & Learning: Gain deep experience in AI-driven applications, cloud-native architecture, and real-time systems. - Stability & Vision: Enjoy the energy of a startup environment backed by the resources and stability of a large, successful company. - Collaborative Culture: We value open communication, teamwork, and a shared passion for building exceptional products. - Growth and career development: At Leadtech, we prioritize your growth. Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities. - Work-Life balance: Benefit from a flexible schedule with flextime and the option of working full remote or from our Barcelona office. Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August so you can savor summer! - Comprehensive benefits: Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services). - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! - Unique Perks: If you wish to come to our office in Barcelona, you’ll find it complete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views. - Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary.

Role Description We are looking for an analytical, automation-driven, and technically versatile professional who thrives at the intersection of AI systems, workflow automation, and customer operations. The AI Automation Engineer combines deep technical expertise in LLM-powered agents and REST API integration with a clear understanding of customer service workflows — building intelligent systems that transform how support operates at scale. The ideal candidate moves fluidly between designing a multi-agent architecture, building an N8N automation workflow, iterating on an LLM prompt, and integrating elements like API calls in data pipelines — all while keeping the end-user experience and operational excellence at heart. They take full ownership of projects, document as they go, and know how to unblock themselves. Main Responsibilities - AI Agent & Automation Development - Design and build multi-agent AI systems integrating LLMs for end-to-end customer-facing workflows: email triage, refund processing, escalation logic, voice bot interactions. - Develop and maintain N8N automation workflows. Mid knowledge of python and javascript are required for code node scripting. - Integrate voice AI platforms (e.g. Retell AI, ElevenLabs, ConnexAI, Vapi, BlindAI, etc.) with custom prompt logic for call bot behaviour, customer handling, and multi-step flows. - Classify and prioritize automation use cases based on business impact, technical complexity, and urgency. - Ensure every automated workflow reflects high-quality communication standards, SLA adherence, tone consistency, and operational resilience. - API Integration & Technical Analysis - Define, document, and test REST APIs for integration with CRMs, helpdesk platforms (Freshdesk), and internal systems across multiple product versions. - Perform initial technical assessments of integration issues by reviewing API responses, logs, configurations, and system outputs to detect errors or inconsistencies. - Build and manage comprehensive API test suites in Postman and N8N, covering edge cases and structured regression scenarios. - Collaborate with Development, Product, and QA teams to reproduce, diagnose, and escalate complex technical issues efficiently and with complete context. - Participate in regular syncs with technical leads to identify recurring automation gaps and drive process improvements. - LLM Prompt Engineering & Structured Outputs - Craft and iterate on LLM prompts for structured output generation — including JSON schema enforcement, multi-category classification, sentiment analysis, and application reference extraction. - Debug and improve AI pipeline outputs, addressing inconsistencies in model responses. - Apply knowledge of AI delegation and orchestration patterns to design reliable, scalable agent workflows. - Process & Knowledge Improvement - Identify recurring workflow gaps or automation opportunities and propose preventive or optimisation actions. - Contribute to internal technical documentation, API specs, runbooks, and workflow guides to improve team efficiency and knowledge sharing. - Support onboarding and upskilling of new team members on automation tools, AI systems, and integration patterns. - Collaborate with cross-functional teams on initiatives that enhance the customer experience and streamline operational workflows. Qualifications - Minimum 2 years of experience in AI automation engineering, backend integration, or technical roles in digital or SaaS environments. - Proven experience building and maintaining automation workflows in N8N or equivalent platforms (Zapier, Make, etc.). - Hands-on experience working with REST APIs — design, integration, testing, and documentation. Building APIs is a plus. - Nice to have: Background in Customer Service or Support operations is a plus, providing valuable context for automation design. Technical Knowledge - Deep understanding of REST API design principles — HTTP semantics (GET, POST, PUT, PATCH), status codes, request/response structuring, and versioning. - Proficiency with N8N: webhook debugging, dynamic base URL configuration and AI node integration. - Experience with ZenDesk, HelpScout, Freshdesk or LiveAgent CRM platforms, and customer support tooling for API integration. - Strong expertise in prompt engineering and Generative AI (LLMs), including developer-level experience with Claude (Sonnet, Opus), GPT, and similar models. - Proficiency with Postman for API testing, test suite management, and environment configuration. - Familiarity with voice AI platforms such as Vapi, Bland AI, ElevenLabs, ConnexAI, Retell AI or equivalent for call AI Agent development. - Solid understanding of JSON data structures, API response parsing, and structured output validation. - Working knowledge of JavaScript and Python. - Nice to have: Familiarity with multi-agent orchestration frameworks (LangGraph, CrewAI, AutoGen) or academic interest in AI delegation patterns. Skills - Strong analytical and problem-solving abilities, with a structured, detail-oriented approach to debugging automation pipelines and integration issues. - Excellent written and verbal communication skills in English (advanced level, interviews will be made in full English); Spanish is a plus but not mandatory. - Proven ability to work autonomously while maintaining close collaboration with cross-functional teams — technical leads, product managers, and support operations. - Organised, accountable, and adaptable — able to manage multiple parallel automation projects effectively in a fast-paced environment. - Curious and self-driven, with a genuine interest in pushing the boundaries of what AI systems can automate. Benefits - Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services). - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! - Flexible start and end times and the option of working full remote or from our Barcelona office. - Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August. - If you wish to come, in our office in Barcelona you’ll find it complete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views. - Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary. Equal Employment Opportunity Employer Leadtech is an Equal Employment Opportunity (EEO) Employer, which means we encourage applications from people with different backgrounds, interests, and personal circumstances. Our team welcomes applicants regardless of their race, gender, age, religion, nationality, sexual orientation, and/or disabilities. All we need is your high energy, skills, and willingness to be part of a great project! Location You'll have the flexibility to choose whether you'd like to come to the office every day, from time to time, or work fully remote. We want you to find the best combination for you. If you prefer to be surrounded with amazing people, our exceptional office is in Barcelona's Blue Building, located right on the city's seafront. Besides our stunning views, you'll enjoy our office perks such as free fruit, snacks, and coffee and you'll also be able to take part in our Mario Kart and table tennis competitions.

Role Description We are looking for a Procurement Specialist with 2–5 years of experience in procurement, sourcing, or vendor management, ideally within technology-related categories such as SaaS, software licensing, or IT services. This is an individual contributor role reporting to the Procurement Lead. The position focuses on implementing defined procurement plans, managing supplier engagements, and ensuring cost-effective and compliant purchasing processes. The role does not include people management or ownership of procurement strategy. Qualifications - Hands-on experience running competitive sourcing processes and negotiating commercial terms. - Comfortable working with contract structures, subscription-based models, and cost analysis frameworks. - Strong negotiation, analytical, and problem-solving skills. - Clear communication with both technical and business stakeholders. - Strong commercial mindset, decisive and solution-oriented. - Approachable and collaborative working style. - Comfortable operating in a dynamic environment and adaptable to evolving priorities. - Experienced with digital procurement systems. - Openness to leveraging AI tools for productivity and analysis. Requirements - Execute end-to-end procurement cycle for software, SaaS, and technology services. - Manage RFP, RFI, and RFQ processes. - Coordinate vendor evaluations and support supplier selection. - Ensure compliance with internal procurement policies and governance standards. - Conduct negotiations within defined approval frameworks. - Support contract drafting, renewals, and amendments with Legal and Finance. - Maintain contract repository, renewal trackers, and supplier documentation. - Monitor license consumption and subscription usage. - Perform spend analysis and total cost of ownership (TCO) assessments. - Partner with Engineering, Legal, Finance, Security, and Operations. - Align stakeholders throughout sourcing and contracting processes. - Coordinate timelines and flag risks or delays. - Ensure procurement activities meet budget and compliance requirements. - Support supplier performance follow-ups. - Consolidate expenditure data across departments. - Identify cost optimization opportunities. - Contribute to procurement process improvements. - Prepare dashboards, reports, and business case inputs. - Leverage digital procurement systems and AI tools to improve efficiency. Benefits - Flexible career path with personalized internal training and an annual budget for external learning opportunities. - Flexible schedule with flextime and the option of working fully remote or from our Barcelona office. - Free Friday afternoons with a 7-hour workday. - 35-hour workweek in July and August. - Competitive salary, full-time permanent contract. - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! Equal Employment Opportunity Employer Leadtech is an Equal Employment Opportunity (EEO) Employer, which means we encourage applications from people with different backgrounds, interests, and personal circumstances. Our team welcomes applicants regardless of their race, gender, age, religion, nationality, sexual orientation, and/or disabilities. All we need is your high energy, skills, and willingness to be part of a great project! Location You'll have the flexibility to choose whether you'd like to come to the office every day, from time to time, or work fully remote. If you prefer to be surrounded by amazing people, our exceptional office is in Barcelona's Blue Building, located right on the city's seafront. Enjoy office perks such as free fruit, snacks, and coffee, and participate in our Mario Kart and table tennis competitions.

Role Description We are looking for a Procurement Specialist with 2–5 years of experience in procurement, sourcing, or vendor management, ideally within technology-related categories such as SaaS, software licensing, or IT services. This is an individual contributor role reporting to the Procurement Lead. The position focuses on implementing defined procurement plans, managing supplier engagements, and ensuring cost-effective and compliant purchasing processes. The role does not include people management or ownership of procurement strategy. Qualifications - Hands-on experience running competitive sourcing processes and negotiating commercial terms. - Comfortable working with contract structures, subscription-based models, and cost analysis frameworks. - Strong negotiation, analytical, and problem-solving skills. - Clear communication with both technical and business stakeholders. - Strong commercial mindset, decisive and solution-oriented. - Approachable and collaborative working style. - Comfortable operating in a dynamic environment, adaptable to evolving priorities. - Experienced with digital procurement systems. - Openness to leveraging AI tools for productivity and analysis. Requirements - Execute end-to-end procurement cycle for software, SaaS, and technology services. - Manage RFP, RFI, and RFQ processes. - Coordinate vendor evaluations and support supplier selection. - Ensure compliance with internal procurement policies and governance standards. - Conduct negotiations within defined approval frameworks. - Support contract drafting, renewals, and amendments with Legal and Finance. - Maintain contract repository, renewal trackers, and supplier documentation. - Monitor license consumption and subscription usage. - Perform spend analysis and total cost of ownership (TCO) assessments. - Partner with Engineering, Legal, Finance, Security, and Operations. - Align stakeholders throughout sourcing and contracting processes. - Coordinate timelines and flag risks or delays. - Ensure procurement activities meet budget and compliance requirements. - Support supplier performance follow-ups. - Consolidate expenditure data across departments. - Identify cost optimization opportunities. - Contribute to procurement process improvements. - Prepare dashboards, reports, and business case inputs. - Leverage digital procurement systems and AI tools to improve efficiency. Benefits - Flexible career path with personalized internal training and an annual budget for external learning opportunities. - Flexible schedule with flextime and the option of working fully remote or from our Barcelona office. - Free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August. - Competitive salary, full-time permanent contract. - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! Company Description At Leadtech, we’ve been redefining digital businesses since 2009, creating innovative online solutions that reach millions of users every month. With a diverse team of over 700 members from 23+ nationalities, we’re united by a passion for creativity and collaboration. We specialize in delivering user-centric experiences across web and mobile platforms, where people can connect with our products like never before. We’re proud of our global reach and committed to fostering an inclusive workplace where every individual contributes to our shared vision of bringing cutting-edge projects to life.

Role Description We are looking for a Business Email Marketing Specialist with at least 5 years of experience, who has strong communications skills and strategic business orientation. As a Lifecycle Marketing Specialist, your role is to reach users through email and push notification campaigns thanks to a successful customer retention strategy. - The Email Marketing Specialist will be responsible for the design and execution of the B2C email marketing campaigns for our online business verticals. - Design and implement multi-stage customer journeys that increase engagement, satisfaction, and revenue. - Automate customer workflows. - Monitor and analyze campaign performance to optimize results and ROI. - Weekly and monthly reporting of channel performance. - Collaborate with cross-functional teams, including product, design, and analytics, to develop and execute integrated marketing campaigns. - Create and manage customer segmentation and targeting strategies to optimize the customer journey. - Build and maintain a deep understanding of customer behavior, preferences, and needs to inform marketing strategy. - Keep up to date on the industry with new features, technology, and AI. - Develop and maintain a testing and experimentation framework to continuously improve campaign performance and customer experience. - Upgrade email templates using graphics, personalization, and advanced features. - Create newsletters in order to promote customer engagement. - Ensure email campaigns follow industry policies and best practices and keep up to date about the technology industry. Qualifications - At least 5 years hands-on technical experience building, executing, and supporting complex email, SMS, and push solutions. - Previous credible experience of CRM / email campaign management. - Experience of using marketing automation software (ExpertSender, Braze, Customer.io, Iterable, etc.). - Proven experience of database marketing, analysis, segmentation, and customer profiling. - Strong analytical skills and data-driven mindset with proven ability to make decisions based on data. - Strong communication skills, confidence when presenting findings and recommendations to stakeholders. - Proven knowledge of data analysis tools (Amplitude, BI tools). - Strong marketing capabilities. - HTML & CSS knowledge. - Strong knowledge of email deliverability and IP and domain reputation and troubleshooting. - Proven A/B testing and experimentation experience. - Critical thinker and problem-solving skills. - Team player. Requirements - Experience with SMS delivery tools. - Strong strategic skills. - Experience with Generative AI. - Strong Microsoft Excel skills. - Good level of English. - Experience with email testing tools. Benefits - Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services). - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! - You have the option of working full remote in Spain or from our Barcelona office. - If you wish to come to our office in Barcelona, you’ll find it complete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views. - Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary.

Role Description Due to continuous growth, our Mobile Development Team is excited to welcome a Senior Mobile Software Engineer who will own end-to-end delivery of iOS and Android applications using AI tooling as a core part of the workflow, not an afterthought. This is a full-ownership role. You write the code, make the architectural calls, and ship the product. AI is your force multiplier; Product is your partner. - Own end-to-end delivery of mobile products: from architecture to App Store and Play Store release - Write production-quality iOS applications in Swift and SwiftUI - Own Android delivery on your projects in Kotlin and Jetpack Compose - Using AI tooling to bridge platform-specific gaps where needed - Maintain and evolve the AI development stack: rules, skills, agents and workflow automation - Collaborate closely with Product Owners and Designers to define scope, surface tradeoffs, and keep delivery predictable - Build and maintain lightweight backend services and integrations when projects require it - Make independent architectural decisions, with Staff Engineers available as technical partners Qualifications - Strong depth in native iOS development - Deep understanding of Swift, UIKit, SwiftUI, and Apple development best practices - Solid Android fundamentals: Kotlin, Jetpack Compose, Play Store delivery - Strong architectural judgment: you design systems that scale and know when simplicity is the right call - Actively uses AI-assisted development tools (Cursor, Claude-Code, Codex, or equivalent) as a core part of your daily workflow, not occasional use - Strong communication skills: you work directly with Product, push back when needed, and set realistic expectations Requirements - Product intuition: you think about the user experience, not just the implementation - Experience building or maintaining internal developer tooling or automation - Familiarity with lightweight backend development (REST APIs, third-party integrations) - Experience with CI/CD pipelines and automated testing practices Benefits - Flexible career path with personalized internal training and an annual budget for external learning opportunities - Flexible schedule with flextime and the option of working fully remote or from our Barcelona office - Free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August - Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services) - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! - Office perks such as free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views

Role Description We are looking for a User Acquisition Specialist specializing in Paid Search to join our growth team. In this role, you will be responsible for the day-to-day execution and optimization of global paid search campaigns, with a specific focus on driving high-quality users to our iOS and Android apps through Google Ads (UAC & W2A). This is a high-impact, hands-on role for someone who has already operated at scale, is comfortable managing 8-figure monthly budgets, and deeply understands how performance marketing works in complex environments. While we focus on high-value users, a key part of your mission will be optimizing for Ad Monetization flow, ensuring our campaigns effectively feed our revenue streams through AdMob. You will work in a cross-channel environment, closely connected with Product, Data, Creative, and CRO teams, and contribute directly to the growth and ARPU of some of our most relevant global products. What you will do - Execute and optimize performance campaigns across Google Ads (UAC & W2A) for our apps portfolio. - Manage and scale high-volume budgets, focusing on pLTV, ROAS, and ARPU. - Master Creative Strategy for UA: Define the optimal mix of assets (text, image, video, and HTML5) and monitor their performance metrics (IPM, CTR) to drive scale. - Optimize for Ad Monetization: Implement and monitor AdMob campaigns, choosing formats and placements that maximize revenue through hybrid bidding models. - Creative Performance Analysis: Deep-dive into which creative formats (e.g., Interstitials vs. Native vs. Banners) drive the best-converted trials and high-value users. - Bidding Excellence: Run continuous A/B tests on bidding types, specifically balancing Max Conversion Value and Ad Impression Value. - Collaborate with creative: Provide data-driven briefs on which formats and hooks are working, ensuring we have the right assets to win the UAC auction. - Monitor technical KPIs: Track and report on daily performance, from install to trial conversion and long-term retention. Qualifications - Hands-on experience managing Google UAC and Web-to-App (W2A) campaigns at scale. - Strong creative intuition for performance: You know what makes a high-performing banner or video and can identify which formats work best for different placements. - Expertise in Ad Monetization: Proven experience using AdMob and understanding how UA impacts ad revenue streams. - Analytical mindset: Ability to interpret complex data (LTV, ROAS, CVR) and translate it into proactive campaign adjustments. - Knowledge of Mobile Ecosystem: Familiarity with MMPs (AppsFlyer/Adjust) and event mapping. - Initiative: You don't just follow a plan; you propose new strategies to beat our targets. Requirements - Experience in the utility or gaming app space (hybrid monetization). - Background in subscription-based businesses (Web or Apps). - Basic understanding of SQL or data visualization tools (Tableau, Looker). - Familiarity with keyword research and search intent for W2A campaigns. - Deep understanding of hybrid monetization models. Benefits - Opportunity to manage high-impact budgets in a 100% performance-driven environment. - Work with a modern tech stack and advanced attribution models. - A culture that values technical expertise and proactive experimentation. - Operate at a level of spend and complexity few teams reach. - Be part of a modern Performance Marketing organization with a cross-channel mindset. - High ownership, strong collaboration with Product, Data, and Creative teams. - Growth and career development with personalized internal training and an annual budget for external learning opportunities. - Flexible schedule with flextime and the option of working fully remote or from our Barcelona office. - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! - Unique office perks including free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views. - Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary.

Role Description Due to continuous growth, our People & Culture Team is excited to welcome a motivated Payroll & HR Compliance Specialist to ensure full compliance with labor regulations and internal policies while managing payroll processes with precision and confidentiality. As a Payroll & HR Compliance Specialist, you’ll play a vital role in ensuring legal, ethical, and procedural integrity across our HR operations. Working closely with Finance, Legal, and external advisors, you’ll manage payroll, maintain compliance frameworks, and contribute to a positive and transparent employee experience. If you’re passionate about accuracy, legal compliance, and continuous process improvement, this is the perfect role for you! Your Mission - Payroll Management: Complete payroll management including collection and review of variables, calculation and control of income tax (IRPF), and preparation and review of payrolls. - Legal Compliance: Ensure compliance with Spanish tax and social security obligations (AEAT and Social Security filings: forms 111, 216, 190, social security contributions, CRA, etc.). - Handle end-to-end employee administration processes. - Systems and Tools: Validate and manage processes in Sistema RED, SILTRA, and oversee HR and payroll management tools (payroll ERP, HRIS). - Benefits and Flexible Compensation: Administration of flexible compensation plans and employee benefits. - Reporting and Closures: Supervise monthly payroll closures, reporting on personnel costs, provisions, and absenteeism reports. - Provide support during onboarding processes for new hires, ensuring a smooth integration experience. - Audits and Accounting: Prepare documentation and collaborate with Finance for internal and external audits, payroll accounting entries, and reconciliations. - Internal Compliance: Ensure the implementation of internal policies, including the Equality Plan, LGD compliance, and other HR policies. - Collective Agreements and Regulations: Update the collective bargaining agreement and internal regulations, ensuring alignment with current legislation and compliance principles. - Issue Resolution: Handle complex payroll or labor-related issues and employee inquiries. - Continuous Improvement: Identify opportunities for process automation and optimization. - Legal Monitoring: Monitor and analyze labor law updates and assess their impact on the company. Qualifications - University degree in Human Resources, Labor Relations, or a related field. - Over 7 years of payroll experience (including at least 1–2 years in a leadership role). - Strong knowledge of payroll ERP systems. - Advanced Excel skills. - In-depth understanding of labor law, tax regulations, and compliance requirements. - Experience in IT environments. - High analytical skills, attention to detail, and problem-solving ability. - Excellent communication skills. - Experience with Employer of Record (EOR) arrangements is a plus. - Analytical mindset, responsibility, and results-oriented. - High level of confidentiality and attention to detail. - Professional working proficiency in English and Spanish. Benefits - Growth and career development: Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities. - Work-Life balance: Benefit from a flexible schedule with flextime and the option of working full remote or from our Barcelona office. Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August. - Comprehensive benefits: Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services). - 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days! - Unique Perks: Office in Barcelona with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views. - Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary. Equal Employment Opportunity Employer Leadtech is an Equal Employment Opportunity (EEO) Employer, which means we encourage applications from people with different backgrounds, interests, and personal circumstances. Our team welcomes applicants regardless of their race, gender, age, religion, nationality, sexual orientation, gender identity, gender expression, and/or disabilities. All we need is your high energy, skills, and willingness to be a part of a great project! Location You'll have the flexibility to choose whether you'd like to come to the office every day, from time to time, or work fully remote. If you prefer to be surrounded by amazing people, our exceptional office is in Barcelona’s Blue Building, located right on the city's seafront.