Senior Mobile Engineering Manager (iOS & Android SDK)

🏢 Summary: Leadership role responsible for owning and delivering high-quality mobile SDKs across Android and iOS, ensuring reliable releases, data integrity, and compliance while aligning engineering execution with business needs. The role combines hands-on technical oversight with team management, focusing on SDK stability, telemetry accuracy, and scalable third-party integrations. Success is measured by predictable releases, strong data quality, and effective adoption of AI-augmented engineering workflows. 🗂️ Requirements: 8+ years of mobile engineering experience, Leadership experience managing mobile engineers, Strong production experience in Android and iOS ecosystems, Deep expertise in at least one of Android or iOS, Strong SDK development experience including third-party integrations, Strong SQL proficiency, Experience with Python for data analysis, Experience with Git-based workflows and CI/CD pipelines, Experience with mobile observability and crash reporting tools, Understanding of telemetry and schema change management, Knowledge of networking fundamentals (TCP, UDP, QUIC, latency, TTFB), Experience with privacy and compliance requirements (GDPR, CCPA/CPRA, App Store, Google Play), Experience with experiment design and release validation practices, Degree in Computer Science, Software Engineering or equivalent experience 📃 Skills: Kotlin, Swift, Android, iOS, SQL, Python, Git, CI/CD, GitHub, Sentry, Firebase, Crashlytics, TCP, UDP, QUIC, GDPR, CCPA, CPRA 🏢 Description: How You Will Make an Impact You will be the clear, trusted owner for all things mobile at Opensignal, leading our iOS and Android SDK teams to deliver high-quality software that powers critical data products. You will align external business needs with engineering execution, ensure predictable releases, and protect data continuity and quality across first-party and third-party integrations. Our products rely on our ability to measure network performance accurately and consistently from our mobile apps and SDKs. Evolving our platform in step with business requirements and operating system changes is a critical success factor for this role. You will also help the team adopt AI in a pragmatic, safe, and outcomes-focused way, improving engineering velocity without compromising quality, privacy, or data integrity. Your impact will be measured by reliable on-time releases, stable SDK behavior in partner apps, strong stakeholder confidence, and zero major data outages or data perturbations. Early success includes smooth onboarding and delivery of new platform support (including Android 17 and upcoming iOS releases) without regression to data quality, alongside clear progress in AI-augmented engineering workflows and platform evolution that keeps pace with product needs. Primary Responsibilities Lead and directly manage the mobile engineering organization (currently 3 Android and 2 iOS engineers), including delivery planning, performance, coaching, and hiring support as needed. Serve as the primary cross-functional point of contact for mobile engineering with business, product, and data partnership stakeholders. Own end-to-end mobile release lifecycle management for our SDKs and related apps, ensuring high release quality and predictable delivery. Drive execution across first-party integrations (Opensignal app, Meteor app, ONX Connect) and third-party partner integrations that run our SDK at scale. Establish and enforce strong data-change discipline so SDK changes do not unintentionally alter critical metrics, schemas, or downstream product behavior. Lead experiment rollout and validation practices (feature flags, quality checks, and post-release verification) to confirm behavior changes as expected. Maintain compliance and policy alignment across privacy and platform requirements, including GDPR, CCPA/CPRA, Apple App Store, and Google Play policies. Drive pragmatic adoption of AI-augmented workflows across coding, QA, and data analysis, with clear guardrails for safety, privacy, security, and verification. Stay hands-on where valuable (technical reviews, architecture decisions, and targeted implementation support), while operating primarily as a manager and delivery owner. Knowledge & Skill Typically 8+ years of experience in mobile engineering, including meaningful leadership experience managing engineers and cross-functional delivery; equivalent depth of experience from non-linear career paths is also valued. Strong production experience across Android and iOS ecosystems, with deep expertise in at least one platform and demonstrated leadership capability across both. Strong SDK development experience (not only app development), including integration and maintenance in third-party applications. Strong data literacy, including SQL proficiency, ability to work with Python for analysis, and practical experience in data quality monitoring. Experience with experiment design and validation in software releases, especially where data integrity is business-critical. Strong understanding of telemetry/schema change management and the downstream impact of data contract changes. Solid networking fundamentals and practical experience relevant to mobile measurement use cases (for example TCP/UDP/QUIC behavior, packet flow timing, latency, and time-to-first-byte concepts). Demonstrated ability to communicate clearly with technical and non-technical stakeholders and translate business needs into execution plans. Experience operating within privacy, compliance, and platform-policy constraints for mobile SDKs. Proactive, curious mindset toward AI and modern engineering practices, with demonstrated judgment in adopting new tooling responsibly. We recognize that excellent candidates may not match every listed qualification exactly. If this role aligns with your strengths and experience, we encourage you to apply. Tools & Education Required: production experience with Kotlin and Swift. Required: experience with Git-based development workflows and CI/CD release pipelines (We use Github Actions). Required: experience with observability and crash tooling used in mobile environments (for example Sentry, Firebase, Crashlytics). Required: strong SQL proficiency. Preferred: Python for data analysis and validation workflows. Preferred: experience with feature flag rollouts, emulator/device testing strategies, and release validation frameworks. Preferred: experience with AI-assisted engineering tools/workflows and defining safe usage standards for teams. Education: degree in Computer Science, Software Engineering, or equivalent practical experience. About Us Opensignal is the leading global provider of independent insight and data into network experience and market performance. Our user-centric approach allows communication providers to constantly improve their network and maximise commercial performance. Leading analysts, investors and financial institutions place a high value on our independent analysis and we are regular contributors to their reports. Real network experience is our focus and ultimately that’s what influences customer choice. Our mission is to advance connectivity for all and here at Opensignal, the team is leading the industry in enabling operators to link their network experience and market performance in a way that has never before been possible. With offices in London, Boston Victoria, British Columbia, and Warsaw, and employees around the world, we are a truly global organization. We are an equal-opportunity employer dedicated to building an inclusive and diverse workforce. Benefits We believe we are stronger when we not only celebrate our many differences, values, and voices but include them in everyday practice. Having a diverse and inclusive culture is essential, which is why we offer a flexible approach to work-life balance, operating in a remote-hybrid way. We also offer an attractive range of additional benefits, including: 95% remotely - the team meets in the Warsaw office for 1 day/month Summer party and other social events Comprehensive private health care package for you and your family (dental care included) Multisport Card

🏢 Summary: Opportunity to lead the development of a cross-platform mobile app built with Kotlin Multiplatform for Android and iOS, taking full ownership of architecture, shared components, and UI/UX patterns. The role involves close collaboration with backend and design teams to deliver scalable, high-performance mobile experiences. You will shape the technical foundations of the product as part of the founding engineering team. 🗂️ Requirements: 4+ years of Android development experience, Strong proficiency in Kotlin, Production experience with Jetpack Compose, Hands-on experience with Kotlin Multiplatform, Experience with mobile architecture patterns (MVI or MVVM), Experience designing mobile app architecture, Experience integrating mobile apps with backend APIs 📃 Skills: Kotlin, Android, iOS, Jetpack, Compose, KotlinMultiplatform, MVI, MVVM, REST, API 🏢 Description: About the company We are a new AI startup, recently funded, creating the next generation of digital experiences for collectibles and trading cards, like game cards, sports cards, and more. The company was started by two experienced entrepreneurs who have built and grown successful companies before, including a gaming unicorn. We are now forming our founding engineering team. This team will help shape the product, company culture, and engineering standards. We use modern tools, LLM-assisted development, automation, and fast iteration. We are looking for smart and motivated engineers who enjoy working with less guidance, more ownership, and some uncertainty. Most of our work happens on-site. About the role You will take full responsibility for our mobile app, built with Kotlin Multiplatform for both Android and iOS. You will help design the app’s architecture, set UI/UX patterns, and work closely with backend and design teams. What you’ll do Build the main app in Kotlin Multiplatform for Android and iOS Set up clean architecture patterns and shared components across platforms Work with backend to create mobile-friendly APIs and data structures Collaborate with design to make smooth, polished, and fast user experiences Who you are 4+ years of Android development experience, strong in Kotlin Experience with Jetpack Compose in production or serious side projects Experience with Kotlin Multiplatform Comfortable with client architecture patterns (MVI, MVVM, etc.) Take ownership and have a good product sense Enjoy creating UI experiences with care, speed, and quality What it’s like to work here High ownership, low bureaucracy Chance to shape company culture and the codebase from the start Work directly with founders and product team Competitive salary and meaningful equity Fast-paced environment, no silos, no drama

🏢 Summary: Mobile Engineer role focused on building and maintaining a React Native application for field inspection and compliance management, featuring offline-first workflows, Bluetooth integrations, real-time synchronization, and secure data handling. The position involves full lifecycle mobile development, AI-assisted coding practices, and automated CI/CD in a collaborative, agile environment. The offer emphasizes performance, scalability, and high code quality for production-grade Android and iOS apps. 🗂️ Requirements: 3+ years experience with React Native for Android and iOS, Strong knowledge of JavaScript and TypeScript, Experience with Redux Saga and Redux Thunk, Experience with React Navigation, Experience with SQLite and encrypted storage, Experience integrating Firebase, Familiarity with Xcode and Gradle, Experience with CI/CD pipelines, Experience publishing apps to App Store and Google Play, Experience with Jest and React Native Testing Library, Use of AI coding tools (e.g. GitHub Copilot, Devin, Windsurf), Intermediate or higher English level 📃 Skills: ReactNative, JavaScript, TypeScript, ReduxSaga, ReduxThunk, ReactNavigation, SQLite, Firebase, Xcode, Gradle, GitHubActions, Fastlane, Jest, ReactNativeTestingLibrary, SonarQube, Appium, Bluetooth, NewRelic 🏢 Description: We are looking for a Mobile Engineer who is passionate about building reliable, user-focused applications used in real-world operational environments. You will work on a mobile platform for field inspection and compliance management in the food service and hospitality industry, contributing to features such as offline-first workflows, Bluetooth-connected sensor integrations, real-time data synchronization, and digital audit processes. This role offers the opportunity to work on meaningful technical decisions in a collaborative engineering environment focused on performance, usability, and scalability. The application includes capabilities such as encrypted local storage, cloud CRM synchronization, document signing, photo and file management, PDF generation, push notifications, and mobile monitoring tools for crash reporting and performance tracking. CI/CD processes are fully automated using GitHub Actions, including linting, testing, SonarQube analysis, and deployments to TestFlight and Google Play. You will join a cross-functional team consisting of an Engineering Manager, ADC, Tech Lead, Back-End Developers, Front-End Developer, and Mobile Developers, working together in an agile and collaborative setup. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. Must have: 3+ years of experience in creating React Native mobile solutions for Android and iOS Strong communication and team player skills Solid knowledge of JavaScript, TypeScript, React Native, React Native components, Redux Saga, Redux Thunk , React navigation SQLite and Encrypted Storage Strong skills in creating flexible user interfaces and custom views Experience integrating Firebase Familiarity with native build tools: Xcode, Gradle Experience with CI/CD pipelines: GitHub Actions, Fastlane Experience publishing apps to the Apple App Store and Google Play Console Jest + React Native Testing Library for unit/integration Demonstrated AI-first mindset: regular, structured use of agentic AI tools such as GitHub Copilot, Devin, or Windsurf Written and spoken English at intermediate level or higher Nice to have: Experience with New Relic mobile monitoring and performance observability Knowledge of SonarQube Experience with Appium or other E2E mobile testing frameworks Experience with Bluetooth integrations or custom native modules Web development experience (React.js, Node.js) Proven use of AI for non-trivial tasks — feature scaffolding, refactoring, test generation, or workflow automation Your responsibilities Engineering and development of mobile using modern technology stack Applying an AI-first development approach using agentic coding tools in day-to-day work Taking part in full app development lifecycle and actively influencing all phases as well as UI/UX design considerations Close cooperation with our clients including daily standups/retros/refinements Ensuring code quality through unit testing, static analysis and peer code reviews Sharing knowledge and experience within the team and Mobile Division

🏢 Summary: Middle-level Android Engineer role focused on enhancing Android system internals and building enterprise-grade accessibility features using Java/Kotlin. The position involves advanced Android development, integration of AI-powered accessibility tools, and collaboration with cross-functional teams. Flexible work format with opportunities to influence product quality and accessibility compliance. 🗂️ Requirements: 3–4 years of commercial Android development experience, Strong knowledge of Android SDK and platform architecture, Understanding of Android application and component lifecycle, Experience with Android UI frameworks (Jetpack Compose, XML, WebViews), Familiarity with Android APIs and design patterns, Experience with dependency management tools, Upper-Intermediate or higher English level 📃 Skills: Android, Java, Kotlin, SDK, Jetpack, Compose, XML, WebView, Gradle, Maven, JFrog, Appium, Espresso, CircleCI, Jenkins, CI/CD 🏢 Description: Are you passionate about building impactful mobile solutions? We at Sigma Software are looking for an experienced Android Engineer with strong Java/Kotlin skills to join our team and work on Android system internals. This is a Middle-level position offering the opportunity to contribute to innovative accessibility solutions used by enterprises worldwide. You can work remotely, onsite, or in a hybrid format — we are flexible to fit your lifestyle. At Sigma Software, you will join a collaborative environment where your expertise will directly influence product quality and user experience. Why join us? We offer competitive benefits, a supportive team culture, and projects that make a real difference. Customer Our client is a rapidly growing technology leader in digital accessibility software. Their AI-enabled products help enterprises make web and mobile offerings accessible to everyone, saving developer time and reducing risk through proprietary discovery and analysis algorithms integrated directly into software development pipelines. Project The project focuses on enhancing Android system internals to deliver accessibility features for enterprise-grade applications. It involves advanced Android development, integration of AI-powered accessibility tools, and collaboration with cross-functional teams to ensure compliance with accessibility standards. Requirements 3–4 years of commercial experience in Android development (or Kotlin/Java background combined with Android experience) Strong knowledge of Android SDK and platform architecture Understanding of Android application lifecycle and component lifecycle Familiarity with Android APIs and common design patterns Strong understanding of Android UI frameworks: Jetpack Compose, XML layouts, and WebViews Experience with dependency management tools (Gradle, Maven, JFrog) Upper-Intermediate or higher level of spoken and written English WILL BE A PLUS Experience with accessibility features and standards Experience developing and integrating SDKs Familiarity with automation frameworks (Appium, Espresso) CI/CD experience with platforms like CircleCI or Jenkins Ensure solutions meet accessibility compliance standards Participate in code reviews and contribute to architecture decisions Personal Profile Proactive attitude Strong team player with a collaborative mindset Independent and self-motivated learner Strong problem-solving skills and attention to detail Responsibilities Conduct in-depth research into Android system internals Develop and deliver high-quality, enterprise-grade features according to product requirements Collaborate closely with support, product management, and other mobile teams Stay up to date on mobile development trends and advancements in accessibility Ensure solutions meet accessibility compliance standards Participate in code reviews and contribute to architecture decisions

🏢 Summary: Build and shape a new cross-platform mobile product from scratch using React Native and TypeScript, driving architecture and delivering high-quality iOS and Android apps. The role covers full-stack mobile development, core modules, performance optimization, and robust build and release processes in a high-impact team. You will set technical direction and ensure scalable, maintainable, and production-ready mobile solutions. 🗂️ Requirements: Proven experience building production mobile apps, Deep expertise in ReactNative and TypeScript, Strong knowledge of mobile architecture, Experience with mobile build pipelines, Experience with performance optimization, Experience with CI/CD pipelines, Experience with automated testing and releases, Fluent Danish, Onsite availability for 3-6 months 📃 Skills: ReactNative, TypeScript, iOS, Android, CICD, Automation, Testing, Architecture, Performance, Telemetry, Observability, AppStore, OTA, Git 🏢 Description: About the Role You’ll join a small, high-impact team that’s building a product from the ground up. No legacy code, no bureaucracy, just the freedom to make something outstanding. You’ll work across the full stack of the app: core platform, shared architecture, reusable components, and the product modules themselves. One week you’re defining the long-term module system, the next you’re optimizing a critical feature that 100,000 users use every day. You’ll work closely with product, design, and backend teams, make big technical calls, set the engineering bar, and ship polished, truly native experiences on iOS and Android. Key Responsibilities Drive architectural and technical direction for the product, built with React Native and TypeScript. Build core features, shared modules, and reusable components supporting multiple product domains. Ensure top-tier performance, scalability, and maintainability through modern patterns and tooling. Contribute to the mobile design system and ensure a consistent, accessible user experience across all modules. Collaborate across teams to review code, share insights, and improve engineering practices. Provide guidance and mentorship where your expertise adds real leverage. Maintain strong build, release, and testing processes, including automation, OTA updates, and app store deployment. Support broader engineering initiatives such as CI/CD improvements, telemetry, observability, and cross-platform consistency. What We’re Looking For Proven experience building and maintaining production mobile apps. Deep expertise in React Native, TypeScript, and mobile architecture. Strong understanding of performance, platform differences, and mobile build pipelines. Pragmatic problem-solver with strong collaboration and communication skills. Passion for technical craftsmanship and mentoring others. Practical info Fluent in Danish Onsite Duration: 3-6 months

🏢 Summary: Lead a mobile engineering team to build and maintain scalable iOS and Android applications, owning the full mobile development lifecycle from development to operations. The role focuses on mobile architecture, engineering quality, API integration, and collaboration with cross-functional teams in a hybrid work environment. 🗂️ Requirements: Experience as a Tech Lead in Agile mobile teams, Strong hands-on experience with Swift and/or Kotlin, Knowledge of MVVM and Clean Architecture, Experience with CI/CD, testing, and monitoring, Understanding of API integration and backend basics, DevOps awareness, Strong problem-solving and decision-making skills, Fluent English, Availability to work from the Warsaw office 3 days per week 📃 Skills: Swift, Kotlin, MVVM, CI/CD, Testing, Monitoring, APIs, DevOps, Flutter, React, Java, Node.js, Android, iOS 🏢 Description: Your responsibilities: Lead, mentor, and grow a team of iOS and/or Android engineers, fostering a collaborative and high-performance culture Own the end-to-end mobile lifecycle (build, test, deploy, run – You build it, you run it) Develop scalable, high-quality mobile applications with a strong focus on performance and user experience Ensure code quality through pair programming, reviews, and defined engineering standards Align mobile solutions closely with backend systems, APIs, and enterprise architecture Drive the evolution of the mobile architecture, tooling, and overall application landscape Identify and reduce technical debt and operational risks Collaborate closely with Product, Design, SRE, and Security to deliver sustainable and reliable solutions Your Profile: Proven experience as a Tech Lead in Agile mobile teams Strong hands-on background in iOS (Swift) and/or Android (Kotlin) Solid understanding of modern architecture patterns (e.g. MVVM, Clean Architecture) Experience with CI/CD, testing, and monitoring in mobile environments Full-stack mindset (API integration, backend basics, DevOps awareness) Strong problem-solving skills, ownership, and decision-making capabilities Experience with or interest in cloud technologies Clear communication skills and strong self-initiative Fluent in English Nice to have -Experience with cross-platform frameworks (Flutter, React Native) -Backend knowledge (e.g. Java, Node.js) -Experience with cloud & DevOps You are comfortable coming to our Warsaw office 3 days a week. How about? Employment contract? Of course. With us you do not have to worry about stable employment. Benefits? We have them! Among other: corporate incentive program, sport card, private medical care. Lunch card? With the cooperation extended and permanent contract, you will receive additional funds to use for meal purchases. Working in a hybrid model? Of course! ! You work with us 2 days a week from home. Work wherever you want? In PAYBACK you have the opportunity. Working 100% remotely, also from European countries for 15 days a year. ‎Flexible working hours? Sounds great! We start working between 7 to 10. Trainings? Of course. We provide training to develop hard and soft skills. Convenient location? Sure! We invite you to our new office at Rondo Daszyńskiego, but we are currently also working remotely. Dress code? We definitely say no. There are no rigid dress code rules in our company, sneakers are more than welcome. Friendly atmosphere at work? Yes! In PAYBACK, people are the most important asset‎. Something is missing? Open communication is our priority, so dare to ask!‎

🏢 Summary: Leadership role responsible for managing and developing an Android team building and maintaining a custom Android-based operating system and mobile applications. The position combines hands-on technical design and implementation with team management, delivery planning, and collaboration with stakeholders and external vendors. Focused on delivering high-quality software in an agile environment while driving best practices across the development lifecycle. 🗂️ Requirements: Minimum 3 years of experience managing a technical team, Experience managing third-party suppliers or service providers, Understanding of Android OS architecture, Hands-on experience with Kotlin Multiplatform, Ability to estimate effort and plan delivery timelines, Proficiency in software design and UML, Knowledge of software architecture patterns, Experience implementing CI/CD and development best practices, Experience working in Scrum, Fluency in English and Polish, Willingness to work mostly on-site in Warsaw 📃 Skills: Android, AOSP, Kotlin, UML, CI/CD, Scrum, AI, Architecture 🏢 Description: Engineering Manager (Android) Warsaw, Poland Full-Time 🔍 About position: Tech company focused on creating healthier technology, is looking for a person to lead the Android Development team. Our Android team maintains and develops custom operating system based on the Android Open Source Project - and builds mobile applications. We are looking for someone with a solid technical background, practical skills, and a broad range of competencies in software development and technical team management. The ideal candidate can design and implement software, plan the team’s work, and support the team in achieving success. This role is directly under the IT Director, managing an internal team + working with external suppliers. 📋 Key Responsibilities: Delivering quality software on time and within budget in an agile environment Development and maintenance of existing OS K Development of a new Android-based operating system for new products Parallel work on several products Managing a development team - recruitment, mentoring, career development, and performance evaluation Improving competence, efficiency and quality of team work Cooperating with stakeholders on planning products roadmap Tracking and reporting results Implementing best practices throughout the software development lifecycle Collaborating with third-party vendors to deliver products 😎 Requirements: Experience managing a technical team - at least 3 years Experience working with and managing third-party suppliers or service providers Understanding of Android OS architecture Hands-on experience with Kotlin Multiplatform Proven ability to estimate effort and plan delivery timelines Proficiency in software design and working knowledge of UML Solid understanding of software architecture patterns Experience using AI tools effectively in the development process Track record of defining and implementing best practices like CI/CD, traceability, and documentation standards Ability to make decisions independently and delegate tasks clearly Ability to resolve conflicts directly and constructively Willingness to share knowledge with others Experience working in Scrum Fluent in English and Polish (spoken and written) Willingness to work mostly on-site 🚀 Nice to have: Higher education in IT (engineering or master's degree) is welcome 🙌 Cool working environment: Full time - B2B contract Work mainly from the office in Warsaw, location near Metro Racławicka Flexible working hours Ownership and career growth opportunities Co-financing for a multisport card, private health care and English classes 2 paid days off for volunteering 🔍 About us We are one of a very few companies in Poland dedicated to designing and manufacturing high quality consumer electronics, aimed at the international market, especially USA and EU⌚📱Our goal is to create unique products featuring top notch minimalist design, in order to help us to live our life in harmony with modern technology . We strive to be independent thinkers, who are not afraid of introducing products which go against typical hot trends, highly promoted by the mainstream big tech companies. To achieve our objective, we rely heavily on custom-designed solutions.

🏢 Summary: The role focuses on architecting and maintaining shared business logic and high-performance networking/data layers using Kotlin Multiplatform for Android and iOS. You will own the shared codebase, ensure production-grade quality through robust testing, and align mobile and backend systems. The position emphasizes API strategy, CI/CD integration, and technical leadership in multiplatform development. 🗂️ Requirements: Proven experience with Kotlin Multiplatform for shared logic and networking layers, Strong knowledge of RESTful API communication and contract testing, Experience with serialization and secure authentication flows, Hands-on experience with multiplatform testing frameworks, Ability to collaborate with backend engineers on APIs and schemas, Minimum 5 years of commercial software development experience 📃 Skills: Kotlin, KotlinMultiplatform, KMP, REST, APIs, Serialization, KotlinX, Authentication, CI/CD, Testing, Android, iOS 🏢 Description: The Role As a key contributor to our cross-platform strategy, you will architect and refine shared business logic using Kotlin Multiplatform (KMP) . Your primary focus will be on engineering high-performance networking and data layers that serve both Android and iOS ecosystems. You won't just write code—you will take full ownership of the shared codebase, ensuring it remains scalable, maintainable, and robust in production. Operating at the heart of our mobile-to-backend infrastructure, you will drive technical excellence and help shape the future of our multiplatform development standards. Key Responsibilities Cross-Platform Engineering: Design and implement core business logic and data flows using Kotlin Multiplatform to ensure seamless performance across mobile platforms. API Strategy & Alignment: Partner with backend teams to define and validate API contracts. You will oversee serialization, secure authentication flows, versioning, and sophisticated error-handling strategies. Quality & Testing Excellence: Build and maintain comprehensive integration and E2E testing suites specifically for KMP, ensuring the shared layer is stable and reliable. Bridge Backend & Mobile: Act as a technical liaison to ensure that backend behavior perfectly aligns with mobile client requirements and user expectations. CI/CD Integration: Streamline test execution within CI pipelines to achieve high coverage and deterministic results for all shared mobile components. Requirements KMP Expertise: Proven track record in building shared logic, networking layers, and data persistence using Kotlin Multiplatform. Backend Savvy: Deep understanding of RESTful/API communication, including retry logic, serialization (e.g., KotlinX Serialization), and contract testing. Testing Rigor: Hands-on experience with multiplatform testing frameworks to dliver high-quality, production-ready code. Collaboration Skills: Ability to work effectively with backend engineers on complex schemas, auth flows, and system consistency. Professional Experience: A minimum of 5 years of commercial software development experience.

🏢 Summary: Opportunity to lead development of shared business logic and networking layers using Kotlin Multiplatform for Android and iOS platforms. The role focuses on architecting scalable, high-performance data and API layers, ensuring production stability through rigorous testing and CI integration. You will own the shared codebase and align backend and mobile systems to maintain robust, secure, and consistent cross-platform solutions. 🗂️ Requirements: Proven experience with Kotlin Multiplatform, Experience building shared business logic and networking layers, Strong knowledge of REST API communication, Experience with serialization and contract testing, Hands-on experience with multiplatform testing frameworks, Experience integrating tests into CI pipelines, Ability to collaborate with backend engineers on APIs and authentication, Minimum 5 years of commercial software development experience 📃 Skills: Kotlin, KMP, REST, APIs, Serialization, KotlinX, Android, iOS, Testing, CI, CD, Networking, Authentication 🏢 Description: The Role As a key contributor to our cross-platform strategy, you will architect and refine shared business logic using Kotlin Multiplatform (KMP) . Your primary focus will be on engineering high-performance networking and data layers that serve both Android and iOS ecosystems. You won't just write code—you will take full ownership of the shared codebase, ensuring it remains scalable, maintainable, and robust in production. Operating at the heart of our mobile-to-backend infrastructure, you will drive technical excellence and help shape the future of our multiplatform development standards. Key Responsibilities Cross-Platform Engineering: Design and implement core business logic and data flows using Kotlin Multiplatform to ensure seamless performance across mobile platforms. API Strategy & Alignment: Partner with backend teams to define and validate API contracts. You will oversee serialization, secure authentication flows, versioning, and sophisticated error-handling strategies. Quality & Testing Excellence: Build and maintain comprehensive integration and E2E testing suites specifically for KMP, ensuring the shared layer is stable and reliable. Bridge Backend & Mobile: Act as a technical liaison to ensure that backend behavior perfectly aligns with mobile client requirements and user expectations. CI/CD Integration: Streamline test execution within CI pipelines to achieve high coverage and deterministic results for all shared mobile components. Requirements KMP Expertise: Proven track record in building shared logic, networking layers, and data persistence using Kotlin Multiplatform. Backend Savvy: Deep understanding of RESTful/API communication, including retry logic, serialization (e.g., KotlinX Serialization), and contract testing. Testing Rigor: Hands-on experience with multiplatform testing frameworks to dliver high-quality, production-ready code. Collaboration Skills: Ability to work effectively with backend engineers on complex schemas, auth flows, and system consistency. Professional Experience: A minimum of 5 years of commercial software development experience.

🏢 Summary: Senior Product Manager role responsible for leading mobile app strategy, roadmap, and execution in a data-driven, mobile-first environment. The position focuses on aligning cross-functional teams, driving AI-powered feature integration, and optimizing user experiences through experimentation and analytics. The role requires strong technical fluency and ownership of end-to-end mobile product delivery. 🗂️ Requirements: 6+ years product management experience, Experience in mobile-first or app-centric products, Strong understanding of mobile architecture, Knowledge of APIs, Experience with A/B testing, Ability to define and track KPIs, Data-driven decision making, Experience collaborating with engineering teams, Experience translating requirements into technical specifications, Experience with AI or LLM-powered features 📃 Skills: Mobile, APIs, AI, LLM, Amplitude, Microstrategy, Proteus, Figma, Slack, Zoom, GoogleSuite, Analytics, KPIs, ABTesting, UX, DataScience 🏢 Description: We are looking for an experienced Senior Product Manager to oversee our mobile app business.  We're in the business of making a positive difference—and now, you can join us in helping millions of job seekers change their careers and their lives for the better. ABOUT THIS TEAM We are the global expansion branch of the BOLD group, building the largest career websites in the world since 2005 with our colleagues in San Francisco, Poland, Puerto Rico, and India. Our products, intended to help people find and kick-start their dream careers, draw in over 20,000,000 visitors a month and have been featured in The Guardian, Forbes, and The Financial Times. Sitting at the intersection between business, technology, and user experience, we have a robust product team of makers and innovators who create seamless experiences for our users.  They are responsible for product planning, gathering and prioritizing product and customer requirements, defining the product vision, roadmap and working closely with UX and engineering to deliver winning products. Technologies/tools we use: Amplitude, Microstrategy, Proteus (click tracking), Testing Tools, Google Suite, Slack, Zoom, Figma, AI tools. WHAT YOU’LL DO Strategy & Vision: Present a clear product vision and mobile strategy to senior leadership, proactively aligning stakeholders and anticipating concerns. Roadmap Ownership: Independently lead sprint planning, scoping, and execution for the App. Prioritize the roadmap based on business value, opportunity sizing, and deep user pain points. Mobile Personalization: Work closely with cross-functional partners in UX Design, Research, Lifecycle Management and Platform Engineering to define user journeys and execute personalized experiences and notifications for App users. Cross-Functional Leadership: Drive alignment and remove friction across Product, Design, Engineering, and Data Science teams. Translate complex mobile requirements into clear specifications that balance technical scalability with speed of delivery. AI Integration: Work closely with Content Technology and Data Science to integrate next-generation AI and LLM-powered features directly into the mobile journey. Execution & Risk Management: Proactively mitigate risks and adjust plans as needed to meet deadlines, ensuring high-quality product outcomes are delivered reliably and on time. Experimentation: Design and analyze sophisticated A/B tests to validate mobile features, optimize conversion rates, and inform long-term app development. Reporting: In cooperation with product analytics, responsible for reporting on key performance metrics to executives. WHAT YOU’LL NEED Experience: 6+ years of product management experience, with a proven track record of delivering measurable business outcomes in a mobile-first or app-centric environment. Technical Fluency: Strong understanding of mobile architecture, APIs, and technical tradeoffs. You should be comfortable collaborating with engineers on complex implementation decisions. Problem Solving: Ability to solve complex problems independently using structured frameworks and data-driven insights. Customer Advocacy: A customer-first mindset with experience synthesizing user feedback and research into prioritized product requirements. Analytical Rigor: Expertise in defining success metrics (KPIs), analyzing performance, and using quantitative/qualitative data to drive decision-making. Communication: Exceptional storytelling skills with the ability to tailor communication for both technical and non-technical audiences. WHAT’S GOOD TO HAVE Experience with a subscription-based, data-focused product. Experience with International product development / localization processes. Experience using AI in products, or a general understanding of it. HERE’S A FEW OF OUR PERKS & BENEFITS Salary range: 18 000 - 21 600 PLN gross (Employment agreement / Umowa o Pracę) Equipment and Internet Program - the company reimburses the Internet expenses and one-time equipment purchase to make your work comfortable when we work remotely (additional to a laptop and necessary accessories we provide all employees with by default). Flexible working hours - we have no problem if you prefer to work early in the morning or start work at noon - you decide for yourself. We work the way we want to achieve the best results. Remote work - we are open to full remote candidates (in Poland). If you prefer, you can also work from the office in Warsaw. Workation (up to 10 working days a year within EEA). Mental Care Programs (a dedicated online platform). Private healthcare (Medicover) and Multisport Card (both single packages are fully refunded by the company). Udemy Business platform - unlimited access to 5,500+ courses.