Jobs Mobile

Ukraine-based role

Stormotion is a React Native-focused agency. We build mobile products in IoT/BLE, EV & Mobility, Fitness, and HealthTech/Mental Wellbeing. Small teams, direct client communication.

Growth path
Start as a React Native developer. Over time you can add React (web) and grow to Full Stack with Hasura + PostgreSQL + Nest.js.

What you’ll do

• Build and ship React Native apps (TypeScript)
• Turn product goals into working solutions (not just “implement tickets”)
• Keep releases stable - test key flows in real conditions
• Make scope/architecture decisions that won’t block future scaling
• Code reviews, mentoring, workshops (everyone teaches, everyone learns)
• Join client calls: clarify requirements, explain trade-offs, drive discussions
   

Must have

• 1+ year commercial React Native experience
• Strong TypeScript
• Hooks + Context
• State management (Redux / MobX or similar)
• API integration (fetch / axios or similar)
• Spoken English Intermediate+: confident on calls, not only in chat
• Tech education (Computer Science, IT, Cybersecurity, etc)
   

Nice to have

• GraphQL (Apollo Client / Relay / urql)
• Push notifications
• Firebase (Cloud Messaging, Analytics, Firestore, Storage, Authentication, Functions)
• React Navigation
• ESLint / Prettier
• Testing (TDD / Jest / Detox)
• CI/CD (Fastlane / GitLab CI/CD / GitHub Actions)
• Reanimated 3 / React Native Skia
• BLE integrations (react-native-ble-plx or similar)
• Ramda / Lodash / fp-ts or other FP libraries
   

Benefits

• 24 paid vacation days + 10 paid recharge days
• Birthday day-off + Donor day-off
• Remote-first, office option in Dnipro
• Professional study compensation (courses/meetups/webinars)
• Sport & Streamings budgets
• Assistance with taxation PE documentation

We are an IT services company based in San Francisco, USA. We build and acquihire expert engineering and data science teams to help our clients meet their business needs and solve operational challenges.

About the role

We are looking for an experienced Senior Mobile Engineer to join one of our client's product development teams on a long-term contract.

You will work on an AI-powered customer communication and lead conversion platform, developing and maintaining native iOS and Android applications. The role involves building scalable mobile solutions, integrating real-time communication features, and leveraging AI-assisted development tools to improve engineering efficiency and code quality.

This position requires working hours from 3:00 PM to 11:00 PM Kyiv time.

Key responsibilities

• Design, develop, and maintain native iOS and Android applications using Swift and Kotlin.
• Build modern, responsive user interfaces with SwiftUI and Jetpack Compose.
• Design and maintain scalable, modular mobile architectures following MVVM and Clean Architecture principles.
• Integrate mobile applications with RESTful APIs, GraphQL, and third-party services.
• Implement and optimize real-time messaging, push notifications, and communication features.
• Actively use AI-powered development tools such as Cursor, Windsurf, or equivalent solutions for coding, debugging, refactoring, and testing.
• Maintain high code quality through automated testing, code reviews, and performance optimization.
• Contribute to CI/CD pipelines and mobile application release processes.
• Collaborate with product managers, designers, and backend engineers to deliver new features and improve existing functionality.

Required qualifications

• 6+ years of professional mobile development experience, including hands-on development for both iOS and Android.
• Strong proficiency in Swift and Kotlin, with solid knowledge of native mobile development practices.
• Experience with SwiftUI, UIKit, Jetpack Compose, and Android Jetpack libraries.
• Strong understanding of MVVM, Clean Architecture, modular application design, and dependency injection.
• Experience with Swift Concurrency (async/await), Kotlin Coroutines, and Flow.
• Professional proficiency with Cursor, Windsurf, or comparable AI-powered development tools, including practical experience using AI agents for code generation, debugging, refactoring, and test development.
• Experience integrating RESTful APIs, GraphQL, and third-party SDKs.
• Strong knowledge of mobile application performance optimization, debugging, and troubleshooting.
• Experience with unit testing, UI testing, and CI/CD processes.
• Familiarity with Git, Gradle, and Swift Package Manager.
• Strong problem-solving skills and ability to work independently and collaboratively.
• English: Upper-Intermediate (B2) or higher.

Preferred

• Experience with real-time communication technologies, VoIP, WebRTC, or Twilio.
• Experience with Kotlin Multiplatform (KMP) or shared mobile development approaches.
• Familiarity with AI-powered features and LLM integrations in mobile applications.
• Experience with mobile observability, crash reporting, and analytics tools.
• Experience optimizing AI-assisted development workflows and integrating them into team engineering practices.

We’re seeking a Senior Mobile Software Engineer (React Native) to building and scaling mobile applications for a Retail Brokerage business. If you enjoy working on production-ready mobile apps and want to make a real impact on high-traffic financial platforms — we’d love to hear from you.
 

Core Competence:
 

• Proven senior-level experience in React Native development for commercial mobile applications.
• Strong knowledge of TypeScript and modern JavaScript (ES6+).
• Hands-on experience with Redux for state management and RxJS for reactive programming.
• Solid understanding of mobile app architecture, performance optimization, and best practices.
• Experience setting up and delivering mobile applications from scratch to production.
• Ability to collaborate closely with a web-focused team and integrate mobile solutions with existing BSG sites.
• Strong problem-solving skills and a proactive, ownership-driven mindset.
   

Preferred Qualifications:
 

• Experience working in FinTech / Retail Brokerage or other high-reliability domains.
• Familiarity with CI/CD pipelines for mobile applications.
• Experience working in cross-functional teams (design, backend, product).
• Upper-intermediate or higher level of English for effective communication in an international environment.
   

What We Offer You:
 

• Impactful Product: Direct involvement in building a mobile app for BSG brokerage platforms used by real customers.
• Professional Team: Collaboration with an experienced Web team in a structured corporate environment.
• Flexible Setup: Contract-based cooperation with a clear scope and timeline.

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Senior Monetization Specialist Android Developer to join one of our clients' teams. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.
 

Key Responsibilities:

• Ad Architecture & Integration: Build and maintain scalable, robust native ad architectures in Android (Kotlin / Java) covering Interstitials, App Open Ads, Rewarded Videos, and Native/Banner formats.
• Mediation Mastery: Manage, configure, and optimize enterprise mediation stacks, with an emphasis on AppLovin MAX and Google AdMob.
• Smart Loading & Show Rates: Architect intelligent caching, pre-fetching, and asynchronous loading flows to eliminate latency, prevent ad drops, and achieve industry-leading Show Rates.
• eCPM Optimization & Bidding Logic: Implement code-level triggers, contextual engagement signals, and dynamic refresh logic to drive aggressive competition among programmatic bidders.
• SDKs & Custom Adapters: Integrate, test, and maintain third-party ad network SDKs, custom mediation adapters, and bidding partners.
• Diagnostics & Revenue Stability: Continuously monitor core monetization metrics (eCPM, ARPDAU, Latency, Impression Depth) and rapidly troubleshoot fill-rate drops or mediation errors.
• Policy & Privacy Compliance: Ensure full adherence to Google Play developer policies, AdMob/AppLovin quality guidelines, CMP/Consent frameworks, and invalid traffic (IVT) prevention rules.

Job requirements

• 5+ years of professional Native Android development experience (Kotlin / Java) utility apps.
• 5+ years of dedicated technical experience with mobile ad networks and mediation platforms, specifically AppLovin MAX and Google AdMob.
• Proven track record of building and maintaining monetization layers in high-scale utility or casual Android apps.
• In-depth understanding of programmatic in-app bidding, waterfall configurations, floor pricing, and real-time auction dynamics.
• Strong understanding of the utility app lifecycle: user flows, retention patterns, and high-converting ad placement timing.
• Data-driven mindset: ability to connect code architecture directly to ad revenue performance and unit economics.

Code&Care — is a successful full-stack development company, which provides clients with high-quality development assistance worldwide.

We are looking for a proactive Junior Software Engineer with a solid programming foundation, hands-on experience with mobile development, and an interest in AI-first development. Commercial experience, internships, and strong personal projects are welcome.

Tech Stack: Swift / SwiftUI, Kotlin / Jetpack Compose, JavaScript / TypeScript, Node.js, SQLite.

Requirements

• Practical experience with Swift/SwiftUI or Kotlin/Jetpack Compose and basic knowledge of at least one additional language.
• At least one working project you can demonstrate and explain.
• Understanding of programming fundamentals, REST APIs, JSON, SQL, and Git.
• Experience using AI tools to generate, debug, and improve code, with the ability to understand and verify the results.
• Willingness to learn new technologies and work with mobile and backend code.
• English: Intermediate (B1) or higher.

Responsibilities

• Fix bugs and implement new features in existing iOS and Android applications.
• Make changes to the Node.js backend and work with APIs and SQLite.
• Integrate speech recognition, OCR, and text-to-speech solutions.
• Test changes and help prepare builds and releases.
• Gradually contribute to prototyping and developing a native multiplayer RPG.

Nice to Have

Experience with both mobile platforms, backend development, AI integrations, Docker, CI/CD, or game development is a plus, but not required.

In this key role, you’ll work closely with our development group leader and collaborate with the broader engineering team to build and maintain high-quality iOS applications.

Key Responsibilities

• Develop and maintain iOS applications using Swift and SwiftUI
• Manage the full technical lifecycle of iOS apps — from design and development to testing, deployment, and ongoing support
• Collaborate with cross-functional team members to deliver new features and improve user experience
• Troubleshoot issues, optimize performance, and ensure application reliability
• Contribute to architectural decisions and code reviews

Requirements

• 7+ years of professional experience in native iOS development
• Strong expertise in Swift and SwiftUI
• Solid understanding of Apple’s design principles and iOS Human Interface Guidelines
• Familiarity with Git, CocoaPods, and popular third-party frameworks (e.g., Firebase, MoEngage)

Join the senior team behind the Billease Android app — a Kotlin & Jetpack Compose fintech product that millions rely on for payments, credit, and secure account access. You'll own features end-to-end, raise the engineering bar alongside other senior developers, and help keep a fintech-grade codebase fast, secure, and a pleasure to work in.

 

What you'll do

• Own features end-to-end — from the networking and data layers through to pixel-accurate Jetpack Compose UI, verified in production.
• Help uphold and evolve the architecture: a clean, layered flow (data → domain → presentation), clear module boundaries, and reactive single-source-of-truth state.
• Raise the bar through rigorous code review, shared standards, and mentoring — contributing to a strong senior team, not working in isolation.
• Keep the app crash-resilient, performant, and secure — careful recomposition, disciplined null-safety, and sensitive data encrypted at rest.
• Investigate and drive production issues to root cause, then ship the fix and the regression guard.
• Help shape conventions, module design, and technical direction together with the team as the product scales.
  
  What we're looking for
  These are the bar for the role — a strong senior should meet essentially all of them, with real depth (not just exposure) in the core engineering areas.
   
  • 7+ years of professional Android development, including meaningful time in a senior or lead role owning architecture and technical decisions — not just closing tickets.
  • Expert-level Kotlin — structured concurrency with coroutines, Flow / StateFlow, strict null-safety, and a feel for clean, stable public API design.
  • Deep production Jetpack Compose: state hoisting, recomposition and performance tuning, custom layouts, and type-safe Compose Navigation at scale.
  • Command of MVVM / clean architecture and DI (Hilt/Dagger) — able to shape and uphold layering and patterns across a large codebase, not just follow them.
  • Fluent in a multi-module Gradle codebase and a disciplined Git / MR-based workflow with thorough reviews.
  • Solid REST networking (Ktor/Retrofit) and JSON serialization, local persistence (Room), and a proven security-first instinct for auth, sessions, and data at rest.
  • Fluent working from Figma — reading designs, specs, and a design-token system, and turning them into faithful, reusable Compose components in close partnership with designers.
  • Effective, judgment-driven use of AI coding tools (e.g. Claude Code, Copilot) — using them to move faster while critically reviewing and validating everything they produce to a senior's standard.
    
    The way you show up
     
    • Actively drive technical and feature discussions — asking sharp questions, weighing trade-offs, and helping the team land on the right approach.
    • Lead the charge when it counts: investigate and triage production issues, trace root causes, and drive them to resolution.
    • Take ownership end-to-end — you plan before you build, flag risks early, and see work through to verified-in-production.
    • Collaborate well in a cross-functional, fast-moving team and are comfortable with ambiguity.
      
      Nice to have
       
      • Fintech or payments experience at scale — with a security-first mindset.
      • Hands-on with data-at-rest encryption (Keystore / Tink), auth/session handling, biometrics, or KYC / liveness flows.
      • Feature-flagged delivery, analytics instrumentation, and crash monitoring.
      • Static analysis and quality gates (detekt / ktlint) and E2E UI testing.
      • Experience migrating legacy XML/Fragment screens to Compose, and contributing to a shared design system.
        
        What you'll work with
        Language & UI
        - Kotlin
        - Jetpack Compose
        - Compose Navigation
        - Coroutines + Flow
        - Figma / Design tokens
        
        Architecture & data
        - MVVM / Clean
        - Hilt
        - Ktor
        - kotlinx.serialization
        - Room
        - Multi-module Gradle
        
        Quality & security
        - JUnit + MockK
        - detekt
        - Keystore / encryption
        - Feature flags
        - AI-assisted dev

Our client is a fast-moving US-market startup with a live iOS gaming product and a growing user base. The engineering team is lean, moves fast, and takes pride in the quality of what they ship. Product, design, and engineering work closely together – no hand-offs, no silos.
 

They're looking for a Senior iOS Engineer who's built consumer apps that real people use. Someone who knows what makes an app feel right, catches performance issues before users do, and can drive technical decisions without waiting to be told what to do.
 

What you'll work on:

• Implement new product features end-to-end in Swift
• Work closely with game designers and backend engineers on gameplay flows
• Take ownership of performance, memory, and responsiveness on your features
• Review code and actively push iOS quality standards across the codebase
• Use AI coding tools in your daily workflow to move faster and write less boilerplate
• Weigh in on architecture and tooling decisions
   

What we're looking for:

• 3+ years of iOS development on consumer apps shipped to the App Store
• Gaming industry experience is a must – or at minimum, a high-engagement B2C entertainment app (social, streaming, lifestyle)
• Solid Swift fundamentals; strong grasp of UIKit and/or SwiftUI
• Hands-on experience with performance profiling and optimization
• Used to working async with distributed teams
• AI tools are part of your daily routine, not an afterthought
• B2+ English

What you'll do

- Build the creative function from zero: the process, the team, the tools, the testing framework and the reporting.

- Own the creative strategy across all major ad networks: Meta, TikTok, Google App Campaigns, Snapchat, and in-app networks (AppLovin, Unity, Mintegral, ironSource).

- Run video production end to end: scripts, UGC creators, editors, motion designers, AI-generated video, timelines and quality.

- Produce and adapt video and static for each network's formats and placements, including playables and end cards for in-app networks.

- Make the latest AI tools the core of production (video, image, voice, lip-sync, avatars), and keep testing new ones as they appear.

- Ship a steady weekly volume of new concepts and iterations, and turn winners into dozens of variations.

- Read performance by creative (hook rate, CTR, IPM, CPI, ROAS) and decide what to kill, iterate or scale.

- Keep a creative testing log and share what works with the UA team and the product.

 

Must have

- 4+ years in performance creative for mobile apps (installs, trials, subscriptions).

- Hands-on experience with several ad networks, at least Meta and TikTok, plus one more (Google UAC or an in-app network).

- Experience managing video production: you have led editors, motion designers or UGC creators, not only made videos yourself.

- Real production experience with current generative AI tools (e.g. Runway, Kling, Veo, Sora, Midjourney, Flux, ElevenLabs, HeyGen, Arcads, ComfyUI or similar).

- You have built a creative process or team from scratch at least once.

- Data-driven: you know which metrics tell you a creative works on each network.

- A portfolio of ads that actually ran, with numbers.

- Upper-Intermediate English or higher.
 

Nice to have

- Subscription apps: utilities, cleaners, AI apps, dating or lifestyle.

- Playable ads.

- Can edit yourself (CapCut, After Effects, Premiere).

- Experience with automated creative pipelines (templates, batch variations, APIs).

 

What we offer

- Building a creative function from zero, with full ownership.

- Direct work with the founder, with no layers of approvals.

- Real ad budgets, and your creatives go live fast.

- Fully remote, flexible hours.

N-iX is looking for a Lead/Senior Kotlin Engineer to join our team.

Our customer is a fintech company that provides flexible buy-now-pay-later solutions, enabling consumers to split purchases into transparent, interest-free, or interest-based payments. The customer's Platform team is responsible for managing critical services that are essential to the success and sustainability of the organisation. In simple terms, the team handles transactional communication send-outs to customers via email, SMS, and push notifications. These services demand attention to detail, proactive maintenance, and swift response times to ensure seamless operations. The recent high-priority initiatives include re-architecture/platform modernisation, high availability, and internationalisation efforts; these are vital for our organisation's growth and competitiveness in the market. These initiatives require dedicated expertise and resources to execute efficiently and effectively.

Main Responsibilities:

• Design and develop a robust and extensible Kotlin framework and platform.
• Own and deliver quarterly goals by leading engineers through ambiguity to solve open-ended problems while ensuring team support throughout delivery.
• Collaborate across the product development lifecycle with product management, design, and analytics to participate in ideation and articulate technical constraints.
• Drive decision-making and risk assessment by partnering on strategic technical choices that properly consider trade-offs and business impact.
• Proactively identify and resolve systemic issues across projects, processes, and technology, advocating for and leading the implementation of solutions.
• Ensure operational excellence and availability by creating and monitoring metrics, supporting "keep the lights on" efforts, and participating in an on-call rotation.
• Foster a culture of quality and ownership by setting high standards for code reviews and design, and advocating for best practices through technical writing and talks.
• Mentor engineering talent by providing actionable feedback, guidance, and leading by example to grow the team's capabilities.

Role Requirements:

• At least 5 years of proficiency in Kotlin with extensive experience designing, developing, and launching backend systems at scale
• Deep experience with distributed systems and high-availability architectures
• Experience in technical leadership in system design, with a proven ability to deliver significant features using elegant, simple, and extensible designs
• Strong infrastructure knowledge, including technologies such as AWS, MySQL/DynamoDB, and Kubernetes
• Proficiency in large-scale codebase management, utilizing a suite of tools and practices that ensure safe and efficient technical changes
• Experience in operational monitoring, including the use of metrics and tracing to maintain system health
• Excellent collaboration skills for effective partnership with global, cross-functional engineering teams
• Well spoken and written knowledge of the English language (C1)

Come Back Agency helps US software and technology companies run their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.
 

This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software and works in long-term client engagements. Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.
 

About the Role

We are looking for a React Native Developer with 1.5-2+ years of commercial experience to join our mobile development team. You will build, maintain, and improve cross-platform mobile applications using React Native and Expo. You will work closely with the Head of React Native and communicate directly with US-based clients.
 

The ideal candidate has hands-on experience developing mobile applications, can independently handle tasks within their level of expertise, and knows how to troubleshoot mobile-specific issues and optimize application performance.
 

What You Will Do

• Build and maintain cross-platform mobile applications using React Native, Expo, and TypeScript.
• Implement new features, integrate REST APIs and third-party services, and maintain existing code.
• Develop responsive interfaces and ensure a consistent user experience across iOS and Android.
• Identify and resolve performance bottlenecks, improve application stability, and maintain code quality.
• Investigate platform-specific issues, handle permissions, and troubleshoot native-related problems and build failures.
• Work with Expo EAS Build and support application builds and releases.
• Participate in code reviews, discuss technical decisions, and collaborate with the Head of React Native.
• Communicate directly with US-based clients to clarify requirements, discuss implementation details, and provide updates on development tasks.
   

Requirements

• 1.5–2+ years of commercial experience in React Native development, preferably with Expo.
• Strong knowledge of React Hooks, component lifecycle, and TypeScript.
• Hands-on experience with React Navigation and/or Expo Router.
• Understanding of iOS and Android differences, Platform.OS, and permission handling.
• Experience integrating REST APIs and working with asynchronous data.
• Understanding of state management approaches and experience with AsyncStorage.
• Experience with Expo EAS Build and familiarity with App Store Connect and Google Play Console.
• Basic understanding of CI/CD pipelines, Git, and mobile app versioning, including buildNumber and versionCode.
• Basic understanding of Bridge, JSI, and Fabric and their purpose.
• Upper-Intermediate English (B2) or higher for direct written and verbal communication with US-based clients.
• Ability to work independently on assigned tasks, troubleshoot technical issues, and explain technical decisions.
   

Nice to Have

• Experience with react-native-reanimated and react-native-gesture-handler.
• Knowledge of UI optimization and performance profiling.
• Hands-on experience implementing push notifications using expo-notifications.
• Experience integrating authentication providers such as Google, Apple, and Facebook.
• Experience with Firebase Analytics or similar analytics tools.
• Experience working with GraphQL APIs.
• At least one mobile application released to production through the App Store or Google Play.
   

What We Offer

• Fully remote, full-time cooperation
• Stable working hours aligned with the US market: 16:00–00:00 Kyiv time
• Paid vacation and sick days
• English lessons and speaking clubs
• No time-tracking software
• Opportunities for professional growth and increased ownership within the team
• Compensation reviews based on performance
   

Hiring Stages: Recruiter Screening → Technical Interview з Head of Development + Live Coding (60хв)
 

Apply with your resume and a short note outlining your relevant React Native experience. You can also submit your application through our website at comeback.ua. Selected candidates will be contacted by Come Back Agency.

A large-scale consumer mobile application with millions of active users required a robust testing strategy to ensure stability, performance, and seamless user experience. Testing efforts focused on both iOS and Android platforms, covering functional validation, UI/UX consistency, geolocation features, and real-time interactions.

Responsibilities

• Contribute as a key member of a world-class Android Engineering and QA Automation team.
• Design, implement, and maintain automated test cases and frameworks in Kotlin, JUnit, Espresso.
• Own the quality lifecycle: identify issues, file and track bugs in Qase(or similar systems), and drive them to resolution
• Collaborate closely with Android engineers to ensure application code is testable and automation-friendly.
• Build and maintain in-house tools for test parallelization, network mocking, and custom reporting.
• Perform peer code reviews, ensuring robust test coverage and reliable CI pipelines.
• Drive improvements to the CI/CD ecosystem, ensuring scalability, maintainability, and speed of test execution.
• Explore and integrate AI-assisted development approaches to enhance test generation, workflow optimization, and CI/CD practices.
• Actively participate in Agile ceremonies – daily standups, sprint planning, retrospectives, and showcases.

Skills Required

• 2+ years of experience as an SDET, QA Automation Engineer, or related role, with a strong focus on Android application testing.
• Proficient in Kotlin and the Android SDK, with strong debugging and troubleshooting skills.
• Hands-on experience with JUnit, Espresso and UI automation.
• Experience with dependency injection frameworks (Dagger/Hilt) and API testing using Retrofit.
• Familiarity with Jetpack libraries and modern Android development best practices.
• Strong experience with Git/GitHub, familiar with both Gitflow and trunk-based development.
• Knowledge of SOLID principles and ability to apply them in test framework design.
• Ability to apply or readiness to adopt AI-driven testing practices, including test generation and workflow automation.
• Strong English communication skills

A large-scale consumer mobile application with millions of active users required a robust testing strategy to ensure stability, performance, and seamless user experience. Testing efforts focused on both iOS and Android platforms, covering functional validation, UI/UX consistency, geolocation features, and real-time interactions.

Responsibilities

• Contribute as a key member of a world-class Android Engineering and QA Automation team.
• Design, implement, and maintain automated test cases and frameworks in Kotlin, JUnit, Espresso.
• Own the quality lifecycle: identify issues, file and track bugs in Qase(or similar systems), and drive them to resolution.
• Collaborate closely with Android engineers to ensure application code is testable and automation-friendly.
• Build and maintain in-house tools for test parallelization, network mocking, and custom reporting.
• Perform peer code reviews, ensuring robust test coverage and reliable CI pipelines.
• Drive improvements to the CI/CD ecosystem, ensuring scalability, maintainability, and speed of test execution.
• Explore and integrate AI-assisted development approaches to enhance test generation, workflow optimization, and CI/CD practices.
• Actively participate in Agile ceremonies – daily standups, sprint planning, retrospectives, and showcases.

Skills Required

• 2+ years of experience as an SDET, QA Automation Engineer, or related role, with a strong focus on Android application testing.
• Proficient in Kotlin and the Android SDK, with strong debugging and troubleshooting skills.
• Hands-on experience with JUnit, Espresso and UI automation.
• Experience with dependency injection frameworks (Dagger/Hilt) and API testing using Retrofit.
• Familiarity with Jetpack libraries and modern Android development best practices.
• Strong experience with Git/GitHub, familiar with both Gitflow and trunk-based development.
• Knowledge of SOLID principles and ability to apply them in test framework design.
• Ability to apply or readiness to adopt AI-driven testing practices, including test generation and workflow automation.
• Strong English communication skills

Project Overview / Assignment Overview

We are looking for an experienced Senior Android BSP Engineer to join a long-term international engineering project focused on the development of next-generation embedded Android/Linux platforms for advanced professional products used worldwide.

As part of the firmware engineering team, you’ll work on sophisticated control systems, digital media, and unified communications solutions deployed in conference rooms, classrooms, auditoriums, home offices, and enterprise environments. These are real, commercially deployed products where platform performance, multimedia quality, reliability, and hardware/software integration truly matter.

Work Deep Inside the Android Platform

This is not typical Android application development. You’ll work close to the hardware and deep within the Android platform, contributing to BSP development, platform integration, optimization, debugging, and system-level problem solving.

You’ll investigate problems that rarely have simple answers—working across multiple layers of the system to understand what is happening, why it is happening, and how to solve it properly.

Real Engineering Ownership

You’ll work directly with real hardware and real product environments, collaborating with experienced hardware, firmware, Android, Linux, and application engineers across multiple countries.

Your contribution will go beyond implementing predefined tasks. We value engineers who can analyze complex technical problems, propose solutions, make sound engineering decisions, and take ownership from investigation through implementation and validation.

You’ll also have the opportunity to exchange knowledge with highly experienced engineers and deepen your expertise across Android internals, BSP development, embedded Linux, multimedia, and hardware/software integration.

Why This Project?

If you enjoy bringing up hardware, debugging across the Android stack, optimizing complex embedded systems, and solving the difficult problems that sit between hardware and software, this is an opportunity to work on technically challenging products while continuing to grow as a senior Android platform engineer.

Required Expertise (Must have):

· 8+ years of proven experience developing, customizing, and debugging embedded software / firmware for Linux and/or Android-based products.

· Strong programming skills in C/C++ within embedded or system-level development environments.

· Hands-on experience with Embedded Linux development on ARM-based platforms, including configuration, build, deployment, hardware interfaces, and platform bring-up.

· Experience with Linux Kernel, U-Boot, Device Tree, and low-level platform customization.

· Practical experience with device driver development, optimization, troubleshooting, bug fixing, and adding new functionality for areas such as display, power management, Wi-Fi, GPIO, or other hardware interfaces.

· Hands-on experience with Android HAL and the ability to debug issues across the Android Framework and Linux Kernel layers.

· Good understanding of AOSP architecture and Android platform development workflows.

· Strong understanding of recent Android versions, features, APIs, and changes, preferably Android 14 or later.

· Experience working with source control and Android development tools such as Git, Gerrit, GitHub, ADB, and Fastboot.

· Ability to debug embedded systems where traditional step debugging may be limited or unavailable.

· Ability to independently read and understand electrical schematics and collaborate effectively with hardware engineering teams.

· Strong problem-solving skills, ownership mindset, and ability to work independently in a complex technical environment.

· Good written and verbal communication skills in an international engineering setting.

Nice to have

· Experience with Android framework services, Android Native applications using JNI/NDK, or Android system applications written in Java or Kotlin.

· Experience with hardware-accelerated graphics processing, especially OpenGL ES.

· Experience with Camera, Display, Media, power management, or connectivity-related subsystems in embedded Android/Linux products.

· Experience with scripting or automation using Bash or Python.

· A degree in Computer Science, Electrical Engineering, or a related technical field would be an advantage.

Expected Deliverables and Areas of Contribution

· Participate in the full software development lifecycle for new and existing embedded Android/Linux-based products — from design and development to testing, debugging, release support, and maintenance.

· Design, develop, and maintain embedded software and platform-level components using C/C++ in close cooperation with software and hardware engineering teams.

· Work with Embedded Linux and Android BSP areas, including platform configuration, hardware interfaces, device drivers, and support for new device features.

· Contribute to the development of next-generation control system, digital media, and unified communications products used in real enterprise environments.

· Investigate and resolve system-level issues across Android/Linux software layers, working on troubleshooting, debugging, performance improvements, and bug fixing.

· Support integration between software applications, hardware components, connected devices, and control systems to ensure stable product behavior.

· Support field escalations for new and legacy products by analyzing issues and contributing to long-term product reliability.

· Prepare and maintain clear technical documentation, including test procedures, design notes, troubleshooting information, and implementation details.

Jabil Inc. partners with experienced independent professionals who contribute their expertise to international engineering projects. Let’s together create, innovate, and solve meaningful technical challenges for world-leading brands.

Engagement highlights:

· Opportunity to support engineering projects delivered for market-leading global brands.

· Long-term project engagement with clearly defined technical objectives.

· Engage based on a B2B basis as an independent contractor who retains discretion over the manner, time, and place of service delivery (remote cooperation model), subject to project requirements and agreed deliverables, giving you flexibility in how and where you work.

· Collaboration with international engineering stakeholders and highly experienced specialists across different countries.

· Exposure to modern technologies and complex engineering challenges across embedded systems and Android platforms.

· The chance to influence technical decisions and contribute your knowledge to products used globally.

We’re looking for a Junior Front-End Engineer (with React Native Expo experience) to join our team. 

Work Location: Poland (Krakow), Slovakia (Kosice) or Czechia (Prague). 

Hybrid: 2+ days per week in the office, the rest remote.

The Mission

We are building a complex, real-time ecosystem for micromobility and logistics systems sim—where split-second logistics meet seamless user experiences. We need a Junior Front-End to work on the development of our Customer Mobile Web App and our high-utility Internal Admin Panels.

You’ll be the bridge between the sleek, high-performance interface our users see and the robust, scalable Python services that power the logic.

• Mobile-First Frontend: Architect and scale our React-based mobile web application, ensuring 60fps performance and offline-first capabilities.
• Operational Control Centers: Build dense, data-heavy Admin Panels that allow our operations team to monitor real-time logistics, manage users, and handle complex dispatching.
• Scalable Backend: Design and maintain performant APIs using Python (FastAPI/Django) to handle high-concurrency event streams.
• End-to-End Ownership: From database schema design to CSS transitions, you’ll own the entire feature lifecycle.

Who You Are

• The Architect: You don't just "write code"; you design systems. You understand how a change in a Python microservice ripples out to the React frontend.
• UX Enthusiast: You understand that an Admin Panel requires different UX "muscle" (efficiency and density) than a mobile app (simplicity and speed).
• Problem Solver: You’ve dealt with the "hard stuff"—real-time GPS tracking, race conditions in booking logic, or complex state management.
• Pragmatist: You balance the need for clean, tested code with the reality of shipping features in a fast-paced environment.

Will be a plus Led transformation of standalone product into scalable SaaS platform.

Why Join Us?

Work on a product with immediate, real-world impact.

A "no-red-tape" environment where your architectural decisions stick.

Layer Technology

Frontend - React Native Expo, Styled Components, Mobx/Redux, WebSockets. Experience with Firebase, Expo SDK, Expo Modules.

Backend - Python (FastAPI / Django / Flask)

Database - PostgreSQL, Redis (for real-time caching)

Infrastructure - AWS/GCP, Docker, Kubernetes

Real-time - WebSockets / Socket.io (for "Uber-style" live tracking)

Requirements & Skills - Senior Front-End Engineer

What We’re Looking For:

• Commercial experience with React Native (Expo)
• Advanced proficiency in React Native Expo.
• Expert-level TypeScript experience with advanced types and strict configurations;
• Deep knowledge of React 18+ fundamentals: hooks, context, memoization, rendering performance.
• Strong knowledge of state management tools (Redux, MobX, Zustand, etc.);
• Experience building map-based UI: react-native-maps / MapView, markers, polylines/routes, camera control, clustering.
• Strong UI implementation skills: different screen sizes, accessibility basics.
• Hands-on experience with GPS / background location tracking
• Expertise in navigation: React Navigation (deep linking, nested navigators, modal flows).
• API integration: REST/GraphQL consumption, request caching, pagination, retries, error handling.
• Handling auth flows (JWT/OAuth), token refresh, secure storage patterns (Keychain/Keystore concepts).
   

Core responsibilities: 

• Full end-to-end ownership of the mobile app (iOS & Android)
• App maintenance, releases, production stability & incident handling
• GPS / geolocation + live tracking
• REST API + real-time event integration
• Performance, reliability, and architecture improvements
• Ability to understand business requirements and translate them into technical requirements.

Required Skills

• React Native Expo, Styled Components, Mobx/Redux, WebSockets. 
• Experience with Firebase.
• Expo SDK 52+, Expo Modules

Language Skills

English: Upper intermediate (B2)

We offer:

• Challenging and rewarding tasks with autonomy in a distributed international team
• Motivated colleagues who foster a collaborative environment
• Competitive salary based on your experience and expertise
• 20 vacation days + state holidays + your birthday off (for full-time employees)
• Sick leave coverage (5 days for full-time employees)
• Opportunities for regular business trips abroad