JustMarkets

Role Description We are looking for a Senior iOS Developer to join the JustMarkets mobile team. You will work on a high-load mobile product with many real-time data updates, complex business logic, and a strong focus on performance and user experience. Our team has unique expertise in research, analysis, and product development. By relying on technical insights and a data-driven approach, we create disruptive future-defining innovations of the fin-tech industry that remain our basis for success. Responsibilities - Develop and improve native iOS applications - Write clean, reusable and maintainable code - Build functional and user-friendly interfaces - Integrate iOS applications with backend services and APIs - Work with real-time data and complex product features - Take part in code reviews and technical discussions - Help improve app performance, stability and user experience - Prepare iOS features for testing and production together with the team - Work closely with backend, QA, product and design teams Qualifications - 5+ years of commercial experience in native iOS development with strong knowledge of Swift and iOS SDK - Strong hands-on experience with UIKit (code-only, no Storyboards) and modern iOS development practices - Solid understanding of OOP, POP, SOLID principles and experience with VIP or Clean Architecture - Experience with asynchronous programming and concurrency using GCD, Swift Concurrency and Combine - Strong understanding of memory management, including ARC and retain cycles - Hands-on experience with REST APIs, GraphQL (Apollo iOS) and WebSocket - Experience with local data storage and iOS security practices, including SQLite/GRDB, Keychain and biometric authentication - Experience with unit and UI testing using XCTest/XCUITest - Experience with Git, Swift Package Manager, CI/CD and Fastlane - Experience with multi-target Xcode projects and application release processes Requirements - Experience in FinTech or real-time trading applications - Experience with Firebase and third-party analytics SDKs (Amplitude, AppsFlyer, etc.) - Experience with advanced iOS features such as App Extensions, deep linking and localization Benefits - Tax expenses coverage for private entrepreneurs in Ukraine - Expert support and guidance for Ukrainian private entrepreneurs - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays as per the company’s approved Public holiday list - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)

Role Description We are looking for a highly motivated and results-driven Head of Data & AI to join our team full-time. In this strategic role, you will shape the vision, architecture, and delivery frameworks for Data Engineering, Data Science, Quant and Data Analytics, unifying these teams into a single, high-impact function. This is a key leadership position, guiding both technical and managerial directions for our data organization. We drive fintech innovation through deep analytical expertise and a data-first, engineering-driven approach. Key Responsibilities - Data Engineering - Design and evolve a scalable, reliable, and maintainable data platform architecture - Oversee development of robust ETL/ELT pipelines and real-time data streaming systems - Establish engineering best practices, including code reviews, CI/CD, data contracts, and observability - Lead technology selection and resource planning across ClickHouse, Spark, and supporting infrastructure - Ensure data quality through monitoring, alerting, SLA ownership, and remediation processes - Manage infrastructure costs and drive optimization across storage, compute, and cloud resources - Artificial Intelligence & Large Language Models - Define and develop the company's overall AI direction and roadmap, aligning initiatives with long-term business strategy - Ensure operational stability and observability of ML services - Define and drive LLM strategy, including identifying high-value use cases, evaluating model providers (OpenAI, Anthropic, open-source), and leading end-to-end implementation - Architect and oversee LLM-powered products, including RAG pipelines, AI agents, and intelligent automation workflows integrated into core business processes - Establish MLOps/LLMOps best practices, including model versioning, evaluation frameworks, prompt management, and drift/hallucination monitoring - Drive responsible AI governance, including bias detection, explainability (SHAP, LIME), fairness auditing, and compliance with emerging AI regulations - Evaluate and integrate vector databases (Pinecone, Weaviate, pgvector) and embedding strategies to power semantic search and knowledge retrieval - Champion AI-assisted development practices (e.g., GitHub Copilot, Cursor) and foster an AI-augmented engineering culture across data teams - Data Analytics & Quant - Drive advanced analytics, strategy, and Quant development - Partner with stakeholders to translate complex business challenges into data-driven solutions - Define and own key metrics, dashboards, and reporting frameworks to support executive and board-level decision-making - Lead experimentation practices to validate business impact of models and initiatives - Mentor teams, setting technical standards and career development paths Qualifications - 7+ years of hands-on experience across Data Engineering, Data Science, Quant, Data Analytics, delivering end-to-end solutions - 3+ years of managerial experience, leading data teams - Bachelor’s or Master’s degree in Computer Science, Mathematics, Physics, Engineering, or a related field - Strong programming skills in Python, with experience writing clean, production-grade code - Solid understanding of software engineering best practices (CI/CD, testing, code reviews, clean architecture) - Deep understanding of core ML algorithms: regression, gradient boosting, time series, etc. - Practical experience with ML libraries and platforms (e.g., scikit-learn, XGBoost, TensorFlow, PyTorch) - Strong foundation in mathematical statistics, probability theory, and quantitative modeling - Proficient in SQL and experience with analytical and OLAP databases - English Upper-Intermediate Nice to Have - Background in trading or fintech - Experience analyzing and modeling time series or high-frequency data - Familiarity with anti-fraud systems, risk modeling, or portfolio analytics - Practical experience with integration of LLM with corporate systems for internal users Benefits - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays according to current legislation - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)

Role Description - Create and maintain reporting and analytical dashboards that provide key business insights - Search for insights and patterns through data analysis - Based on the analysis results, make conclusions for the business - Build interactive dashboards Qualifications - 4+ years of experience as a Data Analyst - 4+ years of hands-on experience with SQL - Experience with data visualization tools (Tableau, Power BI, Looker or similar) - Strong logical and critical thinking skills - Attention to detail and structured approach to work - English Intermediate and higher - Proactive mindset and genuine interest in your work Requirements - Experience with Python for data analysis and scripting (will be a plus) - Experience with R for statistical analysis (will be a plus) - Familiarity with n8n or similar workflow automation tools (will be a plus) Benefits - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays according to current legislation - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)

Role Description - Develop and execute the annual events calendar for a global team - corporate parties, team buildings, strategic sessions, and social initiatives - aligned with company culture, brand identity, and business objectives. - Full-cycle event management: from concept and venue selection to on-site execution, including timelines, run-of-show documents, AV coordination, and logistics. - Budget ownership: annual planning, expense tracking per event, cost reconciliation, and financial reporting. - Vendor and supplier management: contract negotiation, sourcing, and maintaining a preferred vendor network across regions. - Build a metrics framework from scratch and deliver structured post-event impact reports with insights and recommendations. - Coordinate with local teams, regional stakeholders, and external contractors across all key locations to ensure consistent quality. - Maintain comprehensive documentation of processes, templates, and best practices to build a scalable foundation for the growing function. - Stay current on industry trends and continuously improve event formats and experiences. Qualifications - 5+ years of progressive experience in corporate event planning and management. - Proven track record of managing complex, large-scale international events (500+ attendees). - Hands-on experience managing event budgets and financial reporting. - Strong vendor management and negotiation skills. - Ability to operate both at a strategic level and in hands-on execution. - English Upper-Intermediate+ - Willingness to travel regularly across multiple regions. Requirements - Experience in technology or fintech environments will be a plus. - Knowledge of virtual and hybrid event production. - Understanding of international events and cross-cultural considerations. - Background in experiential marketing or brand activation. - Familiarity with sustainability practices in event management. Benefits - 20 paid vacation days per year. - 10 paid sick leave days per year. - Public holidays as per the company's approved Public holiday list. - Medical budget. - Opportunity to work remotely. - Professional education budget. - Language learning budget. - Wellness budget (gym membership, sports gear and related expenses).

Role Description We’re looking for a detail-oriented Content Specialist who will ensure our multilingual content shines across all platforms. If you’re passionate about managing, localizing, and optimizing content while collaborating with diverse teams — this role is your chance to make an impact on a global scale with JustMarkets. - Coordinate translations and oversee the publishing of content on the website using WordPress - Ensure content is updated according to the style guide - Oversee the translation process for multilingual content - Manage and coordinate freelance writers, translators, and other contributors - Analyze content performance and assist in developing strategies to improve engagement - Collaborate with Product and Marketing departments to ensure content distribution meets audience needs and enhances engagement - Maintain familiarity with CMS, task management tools, and localization platforms - Ensure content meets high-quality standards and aligns with the company’s brand and objectives Qualifications - Experience with WordPress - Experience with Crowdin (or similar platform) - Close familiarity with Google Workspace - Localization experience (management of a team of freelance translators) - Previous experience with task management tools (Jira preferred) - English proficiency (B2-C1) Requirements - Copywriting background (will be a plus) - Acquaintance with the Upwork platform (will be a plus) - Experience working with multilingual projects (will be a plus) Benefits - A chance to work in a global, multicultural team, collaborating with in-house experts and freelancers across different markets - An innovative environment that keeps your work dynamic and impactful - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays as per the company's approved Public holiday list - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)

Role Description - Own the wallet infrastructure roadmap, including hot/cold wallet architecture, custody model, and key management requirements. - Lead vendor evaluation and integration for wallet infrastructure providers such as BitGo, Fireblocks, or similar platforms. - Define product requirements for internal ledgering and fund flows, including deposits, withdrawals, sweeps, and reconciliation. - Design policy and control requirements for transaction limits, whitelists, approval workflows, and operational risk controls. - Lead the staking product lifecycle, from infrastructure requirements and partner coordination to the end-user experience. - Partner with Compliance, Legal, Engineering, and Operations to implement AML screening, Travel Rule workflows, and regulatory reporting requirements. Qualifications - 2+ years in a Product Manager or Technical Product Manager role at a financial platform or crypto-native fintech. - Direct experience owning or contributing to wallet/custody infrastructure in production. - Hands-on experience with BitGo, Fireblocks, or similar custody solutions in a live environment. - Deep understanding of hot/cold wallet architecture and internal ledger design at scale. - Ability to work at both strategic and technical level - you can write a PRD and go deep on API docs. - Strong opinions on MPC vs multisig, omnibus vs segregated - backed by real experience. Requirements - Experience migrating between custody providers. - Worked at a platform with 1M+ users. - Experience with staking operations at scale. - Familiarity with Travel Rule compliance and AML tooling (Chainalysis, Elliptic). Benefits - 20 paid vacation days per year. - 10 paid sick leave days per year. - Public holidays according to current legislation. - Medical insurance. - Opportunity to work remotely. - Professional education budget. - Language learning budget. - Wellness budget (gym membership, sports gear and related expenses).

Role Description This role is for an experienced Product Analyst with a strong background in product analytics, experimentation, and data-driven decision-making. You will be responsible for defining product success metrics, analyzing user behavior and A/B test results, uncovering actionable insights, and collaborating cross-functionally to optimize acquisition, retention, and trading experiences while supporting business growth. - Partner with Product Leads (Acquisition, Retention, Trading) to define success metrics and KPIs for new features and product roadmaps - Design, document, and oversee the implementation of tracking plans (event taxonomy) - Analyze A/B test results, providing clear recommendations on whether to roll out, iterate, or kill a feature based on statistical evidence - Create and maintain executive-level dashboards and granular product-level reports - Conduct complex research Qualifications - 3+ years of experience as a Product Data Analyst, ideally within FinTech, Trading, GameDev, or high-transaction B2C digital products - Advanced proficiency in SQL (complex joins, window functions, query optimization) and hands-on experience with Data Warehouses (BigQuery, Snowflake, Redshift) - Strong experience with Product Analytics and event tracking platforms (such as Amplitude, Mixpanel, GA4, Firebase Analytics) as well as BI visualization tools (Tableau, Looker, PowerBI, Superset, or similar) - Solid understanding of statistics specifically for A/B testing (hypothesis testing, p-values, statistical significance, minimum detectable effect) - Experience using Python or R (Pandas, SciPy, Jupyter) for deeper statistical analysis, cohort modeling, or predictive analytics - Proven ability to design and govern product event tracking architecture from scratch Requirements - Domain knowledge in CFD trading, Crypto exchanges, or traditional brokerage businesses - Experience with Data Engineering concepts and tools (dbt, Airflow) to build your own data pipelines - Familiarity with mobile attribution platforms (AppsFlyer, Adjust) and deep-linking analytics Benefits - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays as per the company’s approved Public holiday list - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)

Role Description We are looking for a Quantitative Analyst to become the mathematical backbone of our Trading Core and Risk Tech squads. In a high-frequency trading environment processing billions in volume, success is defined by precision. In this role, you will design, backtest, and optimize the core mathematical models that drive our pricing engines, automated market-making algorithms, risk management frameworks (A/B/C-book optimization), and liquidation mechanics. You will sit at the intersection of advanced mathematics, data science, and high-performance software engineering, working directly with Core Product Managers and engineering teams to turn complex financial data into proprietary algorithmic advantages. Responsibilities - Research, design, and prototype quantitative models for pricing, risk management, and market making - Build and maintain robust backtesting frameworks to validate the performance and safety of models before production deployment - Write clear, comprehensive mathematical and algorithmic specifications for Backend Engineers (Trading Core squads) - Cross functional with the R&D and Trading Ops teams - Conduct post-incident deep dives (e.g., after major market gaps or liquidations) to identify algorithm performance gaps and optimize them Qualifications - 3+ years of experience as a Quantitative Analyst / Researcher in fintech - Exceptional knowledge of probability theory, stochastic calculus, time-series analysis, and financial mathematics - Advanced proficiency in Python (NumPy, Pandas, SciPy, SK-Learn, Statsmodels) for data analysis, modeling, and backtesting - Experience with Machine Learning - Deep understanding of market microstructure, order book dynamics, risk metrics (VaR, Expected Shortfall), and margin/liquidation mechanisms - SQL skills and experience working with large-scale historical market data (tick data, order logs) - Strong logical thinking, initiative, and well-developed communication skills Requirements - Experience in CFD, Crypto CEX, Prop Trading Firm, or Hedge Fund is a plus - Degree (MSc or PhD preferred) in a highly quantitative field: Mathematics, Physics, Quantitative Finance, Statistics, or Computer Science - Understanding of Asset pricing models (e.g., Black-Scholes, local volatility models, Greeks management) - Knowledge of the MetaTrader platforms (MT4/MT5) - Experience with AI (Claude.io, Copilot, Codex) Benefits - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays as per the company’s approved Public holiday list - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)

Role Description We are inviting you, a highly motivated and results-oriented Android Developer to join our team for ensuring solutions, as well as strengthening the product. Our team has unique expertise in research, analysis, and product development. By relying on technical insights and a data-driven approach, we create disruptive future-defining innovations of the fin-tech industry that remain our basis for success. - Developing and maintaining Android mobile applications using Kotlin - Working on technical design, architecture, and implementation of new features - Collaborating with product, backend, QA, and design teams to identify and clarify business requirements - Developing scalable, stable, and maintainable mobile solutions - Integrating Android applications with backend services and third-party APIs - Performing code review and ensuring code quality standards within the team - Writing unit, integration, and UI tests for implemented functionality - Optimizing application performance, stability, and user experience - Participating in Scrum ceremonies, planning sessions, and retrospectives - Writing clean, modular, and maintainable code - Supporting and mentoring team members Qualifications - 3+ years of experience in Android development using Kotlin - Strong experience developing native Android applications - Understanding of Android application lifecycle and Jetpack components - Strong knowledge of OOP, SOLID principles, Clean Architecture, and design patterns - Experience with Kotlin Coroutines, Flow/StateFlow, Retrofit, OkHttp, and Dagger/Hilt/Koin - Experience with Room and local data storage solutions - Experience integrating REST APIs and working with backend services - Working experience with Git, Gradle, and Android Studio - Knowledge of Android UI/UX guidelines and Material Design principles - Understanding of asynchronous programming and memory management - Experience writing unit and UI tests Requirements - Experience with Jetpack Compose - Experience with Firebase and Google services - Experience with CI/CD pipelines for mobile applications - Experience with app performance optimization and crash analysis - Experience in fintech or high-load mobile products - Knowledge of modern Android development best practices Benefits - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays as per the company’s approved Public holiday list - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)

Role Description We are looking for a Senior Web Designer who combines strong visual craft and product thinking to design high-converting web experiences that drive measurable acquisition results. You will join our cross-functional acquisition team alongside product managers, product analysts, and developers, where modern web design directly shapes how potential users discover our product and convert into registered users. You will also collaborate closely with marketing designers to integrate brand illustrations, photography, and visual assets across web surfaces. In this role, you will: - Design and optimize our key acquisition surfaces (websites, landing pages, and registration flows). - Conduct qualitative research to understand visitor behavior and translate insights into design improvements. - Set the visual direction for our web presence, influence design decisions, shape the product experience, and deliver measurable results. Qualifications - 4+ years of experience designing landing pages, marketing websites, and registration flows. - Background that includes hands-on work with conversion metrics, A/B tests, qualitative research, and cross-functional collaboration with product managers and analysts. - Portfolio with recent (last 1 to 2 years) landing pages, marketing websites, home pages, and registration flows demonstrating modern visual craft and conversion-focused thinking. - Strong visual design skills (typography, color theory, layout, hierarchy, composition) with a clear sense of modern web design trends and references. - Proficiency in Adobe Creative Suite (Photoshop, Illustrator) for visual design, asset preparation, and image editing. - Hands-on experience improving registration and sign-up flows by identifying friction through qualitative research and shipping iterative improvements. - Experience designing for acquisition, growth, or conversion-focused contexts with measurable impact. - Good qualitative research skills, including session recording analysis, heatmap interpretation, user interviews, and usability testing, with the ability to translate observations into actionable design hypotheses. - Proficiency in building user flow maps and user journey maps to visualize and communicate complex flows. - Experience creating app store creatives (screenshots, feature graphics, listing assets) for App Store and Google Play, with familiarity with ASO visual best practices. - Practical experience designing for both WordPress (page builders like Elementor or Gutenberg, reusable block patterns, dynamic content) and custom frontend hand-off, with basic knowledge of HTML, CSS, and JavaScript for effective collaboration with developers across both stacks. - Proficiency in designing responsive user interfaces for web and mobile, grounded in user-centered design principles and information architecture. - Experience working within established design systems (components, tokens, guidelines) and proficiency in Figma for prototyping and rapid iteration. - Experience designing for multi-language and multi-regional products, with understanding of how localization affects layout, typography, content density, and visual hierarchy. - Proficient English skills (B2+ level) both written and spoken, with strong communication, teamwork, and a user-focused mindset with attention to detail. Requirements - Experience working with FinTech products will be a plus. - Illustration skills, with the ability to create custom illustrations or thoughtfully compose layouts using existing illustration assets. - Experience designing gamification mechanics. - Experience creating microinteractions and lightweight UI animations (Lottie, After Effects, Rive, or similar tools). - Experience using AI-powered tools (Midjourney, Krea, Runway, Figma AI plugins, Claude, or similar) in your design workflow. Benefits - 20 paid vacation days per year. - 10 paid sick leave days per year. - Public holidays as per the company's approved Public holiday list. - Medical insurance. - Opportunity to work remotely. - Professional education budget. - Language learning budget. - Wellness budget (gym membership, sports gear and related expenses).