Senior Android Developer

🏢 Summary: Senior Fullstack Engineer role focused on building scalable Angular and TypeScript web applications, owning UI architecture, and contributing to Node.js integrations and AWS-based solutions. The offer includes hybrid work, a B2B rate of 18–21k PLN, benefits budget, and professional development opportunities. 🗂️ Requirements: Frontend or server-side JavaScript expertise, Full-stack development with TypeScript, Angular, Node.js, HTML and CSS, AWS cloud-services experience, Serverless and microservices architecture experience, CI/CD pipeline development experience, Source control, branching, merging and deployment knowledge, Public-facing application security, data governance and technology-risk management, System-outage diagnosis and root-cause analysis, Business-level written and spoken English, Office availability twice weekly in Łódź, Warszawa, Poznań, Kraków or Wrocław, Availability to start by the beginning of September 📃 Skills: JavaScript, TypeScript, Angular, Node.js, HTML, CSS, AWS, DynamoDB, CloudFront, Redis, S3, Postgres, Elasticsearch, Serverless, Microservices, CI/CD, GitLab, Bitbucket, Jenkins 🏢 Description: 🌍 Hello World! We are The Codest -  International Tech Software Company with tech hubs in Poland delivering global IT solutions and projects. Our core values lie in “Customers and People First” approach that prioritises the needs of our customers and a collaborative environment for our employees, enabling us to deliver exceptional products and services. Our expertise centers on web development, cloud engineering, DevOps and quality.  After many years of developing our own product - Yieldbird, which was honored as a laureate of the prestigious Top25 Deloitte awards, we arrived at our mission: to help tech companies build impactful product and scale their IT teams through boosting IT delivery performance. Through our extensive experience with product development challenges, we have become experts in building digital products and scaling IT teams. But our journey does not end here - we want to continue our growth. If you’re goal-driven and looking for new opportunities, join our team! What awaits you is an enriching and collaborative environment that fosters your growth at every step. 💡Project Description: We are looking for a Senior Fullstack Engineer (Angular+Node.js) to design, develop, and evolve modern web applications using Angular and TypeScript. The role is strongly backend-focused, with ownership of UI architecture, while contributing to full-stack integrations and cloud-native solutions on AWS. Job requirements 📈 Your Responsibilities: Develop and maintain scalable, high-performance web applications using Angular and TypeScript. Design reusable, modular UI components and drive consistent, high-quality user experience standards. Collaborate closely with product, UX, and backend teams to deliver end-to-end features. Integrate with backend services and APIs, contributing to full-stack solutions where needed. Support deployment, monitoring, and continuous improvement of applications running on AWS. Ensure application performance, security, and reliability through best engineering practices. Conduct code reviews, enforce standards, and mentor junior team members. Actively contribute to architecture decisions and frontend best practices. 🔑 Key Requirements: Proven expertise in either front end or server-side JavaScript web development. Proficient in full stack modern web development (Typescript, Angular, node.js, HTML, CSS) Expertise in cloud computing preferably with AWS (Amazon Web Services) services (Dynamo DB, CloudFront, Redis, S3, Postgres, ElasticSearch, amongst others) Experience developing serverless and micro service architectures Ability to work with and develop CICD pipelines (knowledge of GitLab, BitBucket, Jenkins preferred) Understanding of software development best practices including source control, branching strategies, merging, software deployment. Experience managing technology risk, data governance and security for public facing web applications Ability to diagnose, resolve and perform root cause analysis of system outages. Business level proficiency in the English language – written and verbal. Availability to start no later than the beginning of September 📜Our Promise (what you can expect from us): 18-21k PLN on B2B Fully remote work A unique opportunity to take your career to the next level - we’re looking for people who want to create an impact. You have ideas, we want to hear them! 📌Recruitment process: 30 minute screening call online with our recruiter, Justyna 1h technical interview 1h client interview Offer Questions, insights? Feel free to reach out to our recruiting team: justyna.pazdalska@thecodest.co In the meantime, feel free to visit our website where you can find key facts about us.

🏢 Summary: Oferta B2B dla doświadczonego Android Developera do zdalnego rozwoju nowoczesnych aplikacji mobilnych, w tym bankowości mobilnej, z jednym dniem pracy biurowej miesięcznie. Rola obejmuje rozwój w Kotlinie i Kotlin Multiplatform, projektowanie architektury, testowanie, code review oraz pracę w rozproszonym zespole. Stawka wynosi do 1300 PLN netto za MD plus VAT. 🗂️ Requirements: Minimum 5 lat doświadczenia jako Android Developer, Minimum 3 lata doświadczenia z Kotlin Multiplatform, Znajomość Clean Architecture i SOLID, Znajomość MVI, Minimum 2 lata doświadczenia z RxJava i Coroutines, Doświadczenie z Koin, Doświadczenie z OkHttp, Znajomość Compose i Compose Multiplatform, Umiejętność testowania w JUnit4, MockK i Roborazzi, Doświadczenie z Zuul CI, Doświadczenie z Git i Gerrit, Doświadczenie w code review, Samodzielna analiza i rozwiązywanie problemów technicznych 📃 Skills: Android, Kotlin, KotlinMultiplatform, CleanArchitecture, SOLID, MVI, RxJava, Coroutines, Koin, OkHttp, Compose, ComposeMultiplatform, JUnit4, MockK, Roborazzi, Zuul, Git, Gerrit, CI/CD, BDD 🏢 Description: B2B, stawka do 1300 PLN MD + VAT Tryb: Praca zdalna + 1 dzień pracy z biura w miesiącu Poszukujemy doświadczonego Android Developera, który będzie odpowiedzialny za rozwój nowoczesnych aplikacji mobilnych, w tym rozwiązań z obszaru bankowości mobilnej. Zakres obowiązków: Projektowanie i rozwój aplikacji mobilnych w oparciu o Kotlin i Kotlin Multiplatform. Tworzenie rozwiązań zgodnie z zasadami Clean Architecture, SOLID oraz wzorcem MVI. Implementacja komunikacji sieciowej, mechanizmów asynchronicznych oraz dependency injection. Tworzenie i utrzymywanie testów jednostkowych, BDD oraz testów screenshotowych. Udział w code review i współpraca w dużych, rozproszonych zespołach projektowych. Analiza i rozwiązywanie problemów technicznych. Praca z systemami kontroli wersji oraz procesami CI/CD. Wymagania: Minimum 5 lat doświadczenia jako Android Developer. 3 lata doświadczenia z Kotlin Multiplatform. Znajomość Clean Architecture oraz zasad SOLID. Znajomość architektury prezentacji MVI. Minimum 2 lata doświadczenia w pracy z RxJava i Coroutines. Doświadczenie z Koin. Doświadczenie z OkHttp. Znajomość Compose oraz Compose Multiplatform. Umiejętność pisania testów z wykorzystaniem JUnit4, MockK oraz Roborazzi. Doświadczenie w pracy z Zuul CI. Doświadczenie z Git i Gerrit. Doświadczenie w przeprowadzaniu code review. Umiejętność samodzielnej analizy i rozwiązywania problemów. Mile widziane: Znajomość zagadnień bezpieczeństwa, Google Pay SDK, Android SDK oraz Play Store SDK. Wiedza z zakresu kryptografii (szyfrowanie danych, skróty, podpisy kluczem). Znajomość platformy iOS i środowiska Xcode. Doświadczenie w pracy z narzędziami AI wspierającymi rozwój oprogramowania. Doświadczenie w bankowości mobilnej. Doświadczenie przy tworzeniu aplikacji mobilnych dla sektora bankowego.

🏢 Summary: Oferta dla Senior Android Developera obejmuje rozwój i utrzymanie produkcyjnych aplikacji mobilnych dla klientów indywidualnych i młodszych użytkowników w projekcie bankowym. Rola łączy wdrażanie funkcjonalności, refaktoryzację, dbałość o jakość i skalowalność oraz mentoring zespołu w metodyce Agile. 🗂️ Requirements: Minimum 6 lat doświadczenia w programowaniu aplikacji Android, Bardzo dobra znajomość Kotlin, Doświadczenie z Jetpack Compose, Znajomość Kotlin Multiplatform, Znajomość Compose Multiplatform, Praktyczna znajomość Clean Architecture, Praktyczna znajomość MVVM, Doświadczenie w testowaniu z Espresso, JUnit i MockK, Doświadczenie w publikowaniu aplikacji w Google Play, Doświadczenie w mentoringu zespołu 📃 Skills: Android, Kotlin, Jetpack, Compose, Multiplatform, MVVM, Espresso, JUnit, MockK, GooglePlay, Agile 🏢 Description: Praca hybrydowa | Kraków, Gdańsk lub Warszawa | Projekt bankowy Dołącz do zespołu rozwijającego nowoczesne aplikacje mobilne dla klientów indywidualnych oraz najmłodszych użytkowników. Są to produkcyjne rozwiązania, które są stale rozwijane i dostosowywane do zmieniających się potrzeb użytkowników. Szukamy doświadczonego Senior Android Developera, który będzie odpowiadać za wdrażanie nowych funkcjonalności, refaktoryzację istniejącego kodu oraz wspieranie zespołu swoją wiedzą techniczną. Wymagania: minimum 6 lat doświadczenia w programowaniu aplikacji Android, bardzo dobra znajomość Kotlin, doświadczenie z Jetpack Compose, znajomość Kotlin Multiplatform oraz Compose Multiplatform, praktyczna znajomość Clean Architecture i MVVM, doświadczenie w testowaniu z wykorzystaniem Espresso, JUnit oraz MockK, doświadczenie w publikowaniu aplikacji w Google Play, doświadczenie w mentoringu zespołu. Zakres obowiązków: rozwój i utrzymanie aplikacji mobilnych, projektowanie oraz wdrażanie nowych funkcjonalności, refaktoryzacja istniejącego kodu, współpraca z zespołem Tribe Omnichannel, dbanie o jakość, stabilność i skalowalność aplikacji, mentoring oraz wsparcie innych członków zespołu, udział w pracach prowadzonych w metodyce Agile.

🏢 Summary: Develop and enhance a flagship Android application, delivering scalable, high-quality features with strong performance and user experience. The role covers Android development, UI creation, testing, monitoring, and collaborative problem-solving in a product-focused team. 🗂️ Requirements: Kotlin, Object-oriented programming, Coroutines, Flow, Compose, MVVM, MVI, Clean Code, Gitflow, Commercial Android development experience, English technical documentation reading skills 📃 Skills: Kotlin, Coroutines, Flow, Compose, MVVM, MVI, Git, Gitflow, Android 🏢 Description: We are looking for a candidate for the position of Android Developer to join the team developing the flagship mobile application for XTB customers. In this role, you will be responsible for developing key application functionalities, with a focus on performance, code quality, and UX best practices. Your responsibilities will include: Creating and developing mobile applications on the Android platform in accordance with Clean Architecture and SOLID principles - you will design modern and scalable solutions based on proven architectural patterns; Creating clear application screens in accordance with best practices and UX patterns - you will ensure the intuitiveness and aesthetics of the user interface; Working to deliver business value by creating high-quality software - your solutions will truly support the company's goals and user needs; Writing unit and integration tests and monitoring applications - you will ensure the stability and reliability of the functionalities you create; Teamwork and active problem solving - you will be part of a committed team that works together to achieve the best possible results. Requirements: Very good knowledge of Kotlin and object-oriented programming, Advanced knowledge of reactive/streaming solutions (Coroutines/Flow), Advanced knowledge of Compose, Knowledge of design patterns and best practices (MVVM, MVI, Clean Code), Proficiency in version control systems and Gitflow, Commercial experience in Android programming, English language skills sufficient to read technical documentation. Nice to have: Knowledge of AI tools (e.g., Copilot) and using them to support daily work, gRPC, Room, Firebase, Gitlab CI, Architecture Components, Dependency Injection (Hilt), modularization, UI Tests, Figma, Experience working with Agile methodology (Scrum). We expect the Candidate to have: An active attitude focused on independently overcoming adversity - we are looking for someone who can work independently and is not afraid of challenges; A focus on delivering software that maximizes value for users and the business - we value an approach where technology supports real needs and goals; Proposing technical solutions that translate vision into working software - we expect initiative and commitment to the process of creating solutions from concept to implementation; Creativity in exploring different ways to achieve the same goal - openness to experimentation, seeking new approaches, and thinking outside the box. What we offer: Real influence on the development of the company and the product, Work in an experienced team that is happy to share its knowledge, A clear vision of development thanks to regular feedback and clear career paths, A training budget for courses and conferences that interest you, An extra day off on your birthday, An extra day off for parents, Equipment tailored to your needs, Private medical care and group insurance, Access to an e-learning platform for learning English and a benefits platform, Access to a wellbeing platform and the opportunity to take advantage of workshops and private therapy sessions, Remote work, from the office in Warsaw or from a coworking space in your city, Regular team-building meetings.

🏢 Summary: Own and develop a production Android client for an AI-native assistant, with AI interactions central to the mobile experience. The role focuses on Kotlin development, AI API integration, performance, reliability and collaboration with backend and Machine Learning engineers in a remote-first global team. 🗂️ Requirements: 3+ years of professional Android development experience, Kotlin, AI functionality integration: LLM, vision or speech APIs, Asynchronous programming: Coroutines and Flow, REST or gRPC APIs, Structured data formats, Debugging and performance profiling, Handling latency, partial failures and non-deterministic behavior, ML Kit or lightweight on-device inference, Production app releases through Google Play Store 📃 Skills: Android, Kotlin, Java, LLM, Vision, Speech, Coroutines, Flow, REST, gRPC, SQL, NoSQL, TensorFlow, Lite, MLKit, Analytics, Logging, Profiling, GooglePlay 🏢 Description: About the product Our client is developing an AI-native assistant designed to support everyday communication, organization, errands and complex workflows with minimal user input. The product must reliably manage long-running processes, retain context, interact with external tools and complete real-world tasks despite the non-deterministic nature of modern AI models. The company’s objective is to make everyday activities significantly faster and easier for users. About the role As an Android Software Engineer, you will own the Android client experience and shape how AI behaves, responds and performs on mobile devices. This is not a thin-client or simple API-integration role. You will help build a production Android application in which AI interactions are central to the product experience, with a strong focus on performance, reliability and clarity. What you will do Build and maintain production Android applications using Kotlin. Integrate AI-powered features, including chat, vision, voice and recommendations, through backend APIs. Design user experience patterns for AI interactions, including streaming responses, retries and partial results. Optimize application performance, responsiveness and memory usage across AI-intensive workflows. Implement analytics, logging and feedback collection to support AI evaluation and continuous product improvement. Collaborate closely with backend and Machine Learning engineers on API contracts and system behavior. Ensure application stability, security and scalability in production environments. What we are looking for At least three years of professional Android development experience using Kotlin. Hands-on experience integrating AI functionality such as LLM, vision or speech APIs. Strong understanding of asynchronous programming, particularly Coroutines and Flow. Familiarity with REST or gRPC APIs and structured data formats. Strong debugging and performance-profiling skills. Ability to build systems that must handle latency, partial failures and non-deterministic behavior. Experience with ML Kit or lightweight on-device inference. Experience shipping production applications through the Google Play Store. What success looks like The Android application is stable, smooth and reliable in real-world use. Performance remains responsive and efficient in terms of latency, memory and CPU usage. Production issues are identified early, monitored effectively and resolved through clear root-cause analysis. Technology stack Kotlin / Java Coroutines / Flow REST / gRPC SQL / NoSQL TensorFlow Lite and on-device inference Compensation and employment The position is offered under an employment contract. Compensation is determined individually based on: professional experience and technical capability, scope of responsibility, location and relevant market benchmarks, expected impact on the product and organization. The compensation package consists of a base salary and equity. The company remains flexible when considering exceptional candidates. A company laptop will be provided where required for the role. Remote work and global collaboration The company operates as a remote-first, globally distributed organization. There is no fixed company-wide working schedule and no requirement to follow one specific time zone. Team members are expected to maintain sufficient working-hours overlap with their immediate colleagues to collaborate effectively. The successful candidate will work from Poland and collaborate with engineering, Machine Learning and product specialists located across different regions. Poland-based employees join existing global teams rather than a separate local team. The exact reporting line and hiring manager will be confirmed during the recruitment process. How the team works The company believes that outstanding products are built by small, highly capable and hands-on teams. Decisions are made collaboratively, while individuals are expected to take ownership, exercise sound judgment and execute independently. The team moves quickly while balancing product quality, experimentation and learning from real user behavior. There is no fixed hiring quota for this position. The company is focused on hiring people who meet its technical and ownership standards rather than filling a predetermined number of seats. Recruitment process The standard recruitment process consists of up to four stages: Technical assessment, where relevant to the candidate’s background. HR interview. One or more technical interviews. Founder or leadership interview. Particularly strong candidates may be fast-tracked directly to the technical interview stage based on their experience and previous work. Applications are evaluated by members of the technical team. Interviews may be conducted virtually and, where relevant, onsite. The exact format and interviewers may vary. The company aims to make decisions efficiently and provide candidates with a prompt outcome.