• Own paid media strategy and execution, ensuring campaigns are paced, optimized, and aligned to performance goals • Assist in monitoring media spend and lead pacing with a high degree of accuracy and accountability • Analyze campaign performance across channels and translate findings into clear, actionable insights and recommendations • Proactively identify platform expansion opportunities, tactical tests, and industry trends to drive continuous improvement in media strategy • Collaborate with third party vendors on campaign launch strategy and opportunities • Support the onboarding of new university partners and programs, contributing to initial campaign and landing page setup, creative development, account structure, and strategic recommendations • QA, monitor and optimize performance for new program campaigns at partner schools, ensuring early-stage campaigns ramp efficiently and hit established benchmarks • Help establish KPIs and performance benchmarks for new programs, and ensure a smooth transition to steady-state management • Collaborate with cross-functional teams — including project management, creative, integrated marketing, and marketing operations • Partner with cross-functional team members to develop and maintain standard operating procedures (SOPs) that improve consistency and efficiency across the team • Identify opportunities to streamline workflows and contribute to scalable processes that support team growth • Serve as a primary media contact in new partner and new program launch projects • Deliver clear performance updates that tell the story behind the data • Act as a subject matter expert for paid media best practices across search, social, and display channels

Role Description - Own and scale web user acquisition across Meta, Google, and other channels in US markets - Define and execute performance strategy to hit ROMI targets - Build and implement playbooks, testing frameworks, and clear scale/kill decision criteria - Automate and systematize UA operations, introducing SOPs and reducing manual processes - Own the UA backlog and make data-driven decisions on what to test, scale, or stop - Improve UA ↔ Creative collaboration through structured briefs, SLAs, and prioritization - Use attribution data, analytics, and research insights to optimize budget allocation and performance - Partner with marketing teams to align on strategy and execution - Lead and develop a team of people across channels and regions Qualifications - 5–8+ years of hands-on experience in paid performance marketing in US markets, including 2–3+ years managing a team - Strong expertise in Meta Ads and Google Ads at scale ($5M+ annual spend managed directly or via a team) - Proven track record of building systems (playbooks, automation, testing frameworks) - Strong analytical skills: confident with CAC/LTV models, ROI targets, cohort analysis, and incrementality - Experience managing multi-market / multi-geo paid acquisition setups Benefits - Global Collaboration: Join a diverse, international team that values innovation and recognizes individual contributions. - Competitive Compensation: Receive an attractive salary package that reflects your expertise and rewards your contributions. - Flexible Work Schedule: Enjoy the freedom to work during hours that best suit your productivity and lifestyle. - Professional Development: Benefit from continuous learning opportunities and support for your career advancement goals. - Location Options: Choose to work from our Belgrade office or remotely, with seamless collaboration tools for both. Company Description Kodland is an international online platform for kids and teens from 5 to 17 years old. We teach programming, other digital skills and must-have computer knowledge. The company started in 2018 and was scaling quickly during these years. Now we operate in 14 countries and have more than 2000 employees. Our courses' syllabuses are developed by teachers with extensive professional experience in Computer Science and are taught by qualified instructors. Our mission is to shape a future where children grow up logically, knowledgeably, and technologically adept.

Role Description As a Senior Software Engineer on the Growth & Engagement team, you'll build the products, platforms, and experimentation capabilities that help customers discover value faster and achieve more with our product. You'll partner closely with Product, Design, Data, and other Engineering teams to identify opportunities, validate ideas through experimentation, and deliver experiences that improve customer outcomes and drive sustainable business growth. Beyond shipping features, you'll help shape the technical direction of the team, mentor other engineers, and establish engineering practices that enable us to experiment confidently and move quickly. What You'll Do - Design, build, and maintain customer-facing features that improve acquisition, activation, engagement, retention, and monetization. - Collaborate closely with Product, Design, Data, Marketing, and Customer Success to identify growth opportunities and translate customer feedback, product analytics, and experimentation to guide product decisions. - Design, implement, and analyze experiments using feature flags, A/B testing, and analytics to validate hypotheses and measure customer and business impact. - Build reliable instrumentation and event pipelines that help teams understand customer behavior and make informed product decisions. - Write high-quality, maintainable code while contributing to architecture, technical design, and long-term platform improvements. - Improve the performance, reliability, accessibility, and scalability of critical user journeys. - Mentor teammates through technical leadership, code reviews, design discussions, and knowledge sharing. - Contribute to roadmap planning, technical strategy, and continuous improvement of the team's engineering practices. Qualifications - 5+ years of professional experience as a Software Engineer building and operating production software. - Strong proficiency building modern web applications. Experience with TypeScript, React, Node.js, and MongoDB or similar technologies, with the ability to become productive quickly. - Familiarity with Model Context Protocol (MCP) and the broader AI tooling ecosystem and the ability to quickly learn emerging AI technologies. - Experience leveraging AI-assisted development tools and workflows to improve engineering productivity, code quality, and delivery. - Experience building customer-facing products in close partnership with Product and Design teams. - A product mindset with the ability to balance customer needs, technical tradeoffs, and business goals. - Experience using analytics and data to inform engineering and product decisions. - Strong software engineering fundamentals, including system design, testing, observability, and operational excellence. - Excellent communication and collaboration skills, with the ability to influence technical decisions across cross-functional teams. - A track record of taking ownership of ambiguous problems, driving projects from concept to delivery, and mentoring other engineers. - Experience working on a Growth/Engagement team or in a product engineering role focused on experimentation and customer lifecycle improvements. - Experience working with business metrics such as activation, engagement, retention, conversion, and monetization to inform product and engineering decisions. - Experience designing, implementing, or analyzing product experiments (A/B testing, feature flagging, or similar experimentation frameworks). Benefits - Compensation offered will be determined by factors such as location, level, job-related knowledge, skills, and experience. Equal Opportunity We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

Role Description Ruby Labs is seeking a Growth Product Specialist to drive ARPU optimization by increasing product value and deepening user engagement within our subscription products. You'll own a clear, measurable goal - achieving a 20% quarterly ARPU increase through improvements in retention, engagement, and perceived product value. We're looking for a data-driven, creative product leader with a strong track record in retention and engagement optimization who is comfortable using AI tools as a core part of their daily workflow. At Ruby Labs, we value results over effort - success means measurable impact, not time spent. If you're driven by outcomes and eager to grow through the results you deliver, this is the place where your impact directly shapes both the product and your career. Key Responsibilities - ARPU Growth: Achieve a 20% quarterly ARPU increase by enhancing product value, retention, and engagement across existing subscription tiers. - Retention Strategy: Build and optimize retention and engagement loops that deepen user satisfaction and extend subscription lifetime. - User Journey Optimization: Analyze user behavior, identify engagement gaps, and implement product improvements that increase perceived user value. - Session Analysis: Conduct day-to-day review of user sessions to identify friction points, drop-offs, and behavioral patterns that inform product decisions. - Metrics & Reporting: Build and maintain Mixpanel dashboards and deliver regular performance reports on key product metrics, surfacing actionable insights for the team. - AI-Powered Prototyping: Use AI tools - including Claude and other solutions - to independently generate functional prototypes and concepts that are directly considered for production. - Hypothesis-Driven Work: Use data, feedback, and research to identify opportunities. Generate, validate, and execute hypotheses quickly, taking full ownership from idea to production. - Backlog & Testing: Work with product backlog, prioritize experiments, and lead the end-to-end execution of A/B and multivariate tests. - End-to-End Ownership: Lead the full cycle - from design and implementation to QA, data review, and final decision to scale or retire changes. - Quality Delivery: Maintain exceptional UX standards; deliver only high-quality, high-impact improvements. Qualifications - Experience: 2+ years in product management with proven results in ARPU, retention, or engagement growth. - Ownership Mindset: Hands-on and accountable from hypothesis to production; experienced in stakeholder management and delivery. - Analytical Thinking: Strong ability to extract insights from product data, user behavior, and feedback. Hands-on proficiency with Mixpanel - including building boards, funnels, cohorts, and custom reports. - AI Fluency: Actively uses Claude and other AI tools in daily work - for prototyping, analysis, writing, and problem-solving. This is not optional; it's how we work. - Creative Problem-Solving: Innovative thinker with experience designing retention mechanisms and engagement features, including AI-generated product concepts. - Subscription Expertise: Deep understanding of user lifecycle, retention psychology, and value-based growth. - Quality-Driven: High attention to detail and commitment to delivering an excellent user experience. - Technical Fluency: Proficient with analytics tools, cohort analysis, backlog management, and data-driven decision-making. Location Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours. Benefits - Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance. - Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days. - Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge. - Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them. - Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere.