Kotlin Developer (f/m/x)

🏢 Summary: Role focused on designing and developing scalable microservices for a modern fintech expense management platform integrating payments, cards, and invoicing into partner systems. The position involves leading technical initiatives, optimizing system performance, and ensuring high reliability in a cloud-based distributed environment. You will also mentor engineers and drive technical improvements across the platform. 🗂️ Requirements: Minimum 5 years of professional software development experience, Strong expertise in Kotlin, Experience with distributed systems, Experience with microservices architecture, Experience with cloud environments (AWS, Kubernetes), Proficiency with PostgreSQL or other relational databases, Experience with JUnit and Testcontainers, Experience with observability tools such as Grafana, Very good English (minimum B2), Fluent Polish, Residence in Poland 📃 Skills: Kotlin, AWS, Kubernetes, PostgreSQL, JUnit, Testcontainers, Grafana, Microservices, DistributedSystems, Cloud 🏢 Description: Join a team working on a modern fintech platform that supports company expense management. The project focuses on developing a finance solution that enables seamless integration of financial tools (including payment cards, expense management, and invoice handling) directly into partner systems such as banks, accounting platforms, and HR solutions. The product being developed allows companies to simplify financial processes, automate settlements, and gain full real-time control over their spending. Your tasks Leading initiatives to design, build, and maintain scalable microservices primarily using Kotlin Collaborating with cross-functional teams to develop innovative solutions across Platform, Services, SMB, and other domains Analyzing system performance and implementing optimizations to ensure high reliability and scalability Participating in code reviews, post-mortems, and providing mentorship to other engineers Proactively improving the architecture and quality of solutions, and leading the team through technical challenges and migrations Requirements Minimum 5 years of professional experience in software development Expertise in server-side languages, especially Kotlin, and experience with distributed systems, microservices, and cloud environments (e.g., AWS, Kubernetes) Proficiency with relational databases like PostgreSQL, testing frameworks (e.g., JUnit, Testcontainers), and observability tools like Grafana Strong problem-solving skills and a collaborative mindset to mentor and upskill your teammates Very good knowledge of English - min. B2 level Residing in Poland required Nice-to-have requirements Previous work in the fintech industry or with financial products Knowledge of topics related to payments, cards, or accounting Experience working in a scale-up environment Proficiency in one of the following front-end technologies: React or TypeScript What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Backend engineering role focused on building and maintaining Kotlin-based microservices for a modern fintech expense management platform. The position involves developing scalable financial integrations with banks, accounting, and HR systems while ensuring high reliability and performance. You will contribute to architecture improvements, code quality, and system observability in a cloud environment. 🗂️ Requirements: Minimum 3 years of software development experience, Commercial experience with Kotlin, Experience building backend systems, Experience with microservices architecture, Basic experience with AWS or Kubernetes, Experience with PostgreSQL, Experience with testing and observability tools, Good command of English, Residence in Poland 📃 Skills: Kotlin, Microservices, Backend, AWS, Kubernetes, PostgreSQL, JUnit, Grafana, Cloud 🏢 Description: Join a team working on a modern fintech platform that supports company expense management. The project focuses on developing a finance solution that enables seamless integration of financial tools (including payment cards, expense management, and invoice handling) directly into partner systems such as banks, accounting platforms, and HR solutions. The product allows companies to simplify financial processes, automate settlements, and gain full real-time control over their spending. Your tasks Designing, building, and maintaining microservices using Kotlin Collaborating with cross-functional teams to deliver solutions across Platform, Services, SMB, and other domains Supporting system performance monitoring and contributing to improvements in reliability and scalability Participating in code reviews and maintaining high code quality standards Contributing to the continuous improvement of code quality and system architecture Troubleshooting and resolving technical issues Requirements Minimum 3 years of professional experience in software development Hands-on experience with Kotlin in commercial projects Experience building backend systems and working with microservices architecture Basic experience with cloud environments (e.g., AWS, Kubernetes) Experience with relational databases (e.g., PostgreSQL) as well as testing and observability tools (e.g., JUnit, Grafana) Good command of English Residing in Poland required What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Senior Frontend Engineer role focused on building and scaling a modern fintech platform for managing corporate spending. The position involves leading development of React and TypeScript-based SPA applications, integrating with microservices and APIs, and driving performance and architectural improvements. You will collaborate cross-functionally while mentoring engineers and shaping scalable front-end solutions in a cloud-native environment. 🗂️ Requirements: 5+ years professional software engineering experience, Strong commercial experience with React, Strong expertise in TypeScript, Advanced knowledge of modern JavaScript (ES6+), Experience building large-scale SPA applications, Experience designing scalable front-end architectures, Experience working with APIs and microservices-based systems, Hands-on experience with front-end testing (unit, integration, e2e), Experience with CI/CD pipelines, Experience with AWS, Experience with Kubernetes, Professional English proficiency (min. B2), Fluent Polish, Residence in Poland 📃 Skills: React, TypeScript, JavaScript, ES6, SPA, REST, GraphQL, Microservices, CI/CD, AWS, Kubernetes, Testing, SSR 🏢 Description: Join a team building a modern fintech platform that helps businesses manage company spending more efficiently. The project focuses on developing a financial product that enables seamless integration of financial tools—including corporate cards, expense management, and invoice processing—directly with partner ecosystems such as banks, accounting platforms, and HR systems. The platform empowers companies to automate financial operations, simplify reconciliation processes, and gain full real-time visibility into their spending. Your tasks Lead initiatives focused on designing, building, and maintaining scalable front-end applications primarily using React and TypeScript Build modern, performant, and intuitive user interfaces for key areas of the fintech platform Collaborate closely with cross-functional teams across backend engineering, product, and design to deliver scalable product solutions Integrate front-end applications with microservices-based architectures and APIs (REST / GraphQL) Analyze application performance and implement optimizations to ensure high responsiveness, reliability, and scalability Participate in code reviews, architecture discussions, and post-mortems while mentoring other engineers Proactively address technical debt and guide the team through technical challenges, refactoring initiatives, and architectural migrations Requirements At least 5 years of professional software engineering experience, including strong commercial experience with React Strong expertise in TypeScript, modern JavaScript (ES6+), and building large-scale SPA applications Solid experience designing scalable front-end architectures using component-based and modular design principles Experience working with APIs and distributed systems in microservices-based environments Hands-on experience with front-end testing frameworks (unit, integration, e2e) and observability/monitoring tools Previous work with CI/CD pipelines, cloud environments such as AWS, and container orchestration platforms like Kubernetes Strong problem-solving skills, ownership mindset, and passion for mentoring and elevating engineering teams Professional English proficiency - minimum B2 Fluent in Polish required Residing in Poland required Nice-to-have requirements Previous experience in fintech or building financial products Understanding of payments, cards, expense management, or accounting-related domains Experience working in a scale-up environment Experience with GraphQL, SSR, performance optimization, or building design systems What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Development of a large-scale fintech mobile product in the deferred payments domain, focused on designing and implementing an Android application in Kotlin. The role involves building new features, integrating with internal and external APIs, ensuring high code quality, security, and performance. You will actively contribute to architectural decisions and the technological evolution of the product. 🗂️ Requirements: Minimum 6 years of Android development experience, At least 2 commercial Android projects delivered, Strong experience with Kotlin, Experience with REST API integration, Proficiency with Android Studio and Android SDK, Experience with Jetpack Compose, Knowledge of MVVM or MVI, Knowledge of Clean Architecture, Experience publishing apps to Google Play, Experience with CI/CD pipelines, Knowledge of mobile application security principles, Ability to ensure code quality and maintain documentation 📃 Skills: Kotlin, Android, REST, AndroidStudio, AndroidSDK, JetpackCompose, MVVM, MVI, CleanArchitecture, GooglePlay, CICD, GitLabCI, GitHubActions, Bitrise, Keystore, EncryptedSharedPreferences, ReverseEngineering, RootDetection 🏢 Description: Dołącz do zespołu naszego klienta – szybko rozwijającej się firmy fintechowej działającej w obszarze płatności odroczonych. Budują produkt, z którego codziennie korzystają tysiące użytkowników🤝 Twoje zadania: projektowanie i implementacja aplikacji mobilnej na Androida (Kotlin) 📱 współpraca z zespołem przy definiowaniu i tworzeniu nowych funkcjonalności 👥 integracja z wewnętrznymi i zewnętrznymi API ( m.in . weryfikacja tożsamości, operacje płatnicze) 🔌 realizacja oraz wsparcie testów kodu, wydajności i UX 🧪 diagnozowanie i usuwanie błędów oraz dbanie o jakość i dobre praktyki 🛠️ aktywny udział w rozwoju produktu technologicznie i funkcjonalnie 🚀 Szukamy osoby, która: ma min. 6 lat doświadczenia w Androidzie (preferowany Kotlin) + min. 2 komercyjne projekty 💼 pracowała z REST API 🌐 zna Android Studio, Android SDK oraz Jetpack Compose 🧩 zna architektury, wzorce i podejścia (MVVM/MVI, Clean Architecture) ⚙️ publikowała aplikacje w Google Play i zna CI/CD (GitLab CI, GitHub Actions, Bitrise) 🚛 rozumie zasady bezpieczeństwa aplikacji (Keystore, EncryptedSharedPreferences, reverse engineering, root detection) 🔐 dba o jakość kodu i dokumentację ✍️ zna angielski na poziomie min. B2 🇬🇧 Dlaczego warto? praca nad realnym produktem o dużej skali 📈 nowoczesny tech stack i kultura inżynierska 💻 wpływ na kierunek rozwoju produktu 💡 stabilny fintech z ambitną roadmapą 🚀

🏢 Summary: Mid-Level Kotlin/Java Developer role focused on building and enhancing a microservices-based Developer Experience platform in the fintech domain. The position involves designing and implementing web applications and APIs, improving compliance and automation through scalable cloud-integrated solutions. The role follows a hybrid model in Krakow and emphasizes Agile delivery and high-quality code practices. 🗂️ Requirements: 3+ years experience with Java or Kotlin, Experience in API development, Experience with SQL databases, Knowledge of HTML, Knowledge of JavaScript, Understanding of microservices architecture, Experience working in Agile environments, Experience with Jira and Confluence, Strong troubleshooting skills, English B2+ level, Legal right to work in the EU 📃 Skills: Java, Kotlin, SQL, HTML, JavaScript, Microservices, APIs, Agile, Jira, Confluence, CICD, Jenkins, AWS, Azure, GCP, Linux, AIX, WAS, Testing, TestAutomation 🏢 Description: Unleash innovation through code — drive the next evolution of microservices and cloud integration! Krakow-based opportunity with hybrid work model As a Mid-Level Kotlin/Java Developer , you will be working for our client, a leading player in the financial technology industry, focused on building a cutting-edge Developer Experience platform. You will help develop a robust microservice architecture to enhance compliance and streamline development processes, shaping the future of software control and automation. Join us and be part of a transformative journey that fosters innovation and career growth. Your main responsibilities: Collaborate with cross-functional teams to design, develop, and implement web applications and APIs using Kotlin and Java. Build and maintain microservices that address critical business challenges and improve developer experience. Work closely with testers and other developers to ensure high-quality, efficient code delivery. Proactively engage with customers and internal stakeholders to resolve issues and incorporate feature requests. Participate in Agile practices, including peer reviews, automated testing, and continuous integration/deployment workflows. You're ideal for this role if you have: 3+ years of experience in Java, Kotlin, or related development fields. Strong expertise in API development, databases (SQL), and front-end technologies such as HTML/Javascript. Solid troubleshooting skills and experience working within Agile environments using Jira/Confluence. Good understanding of microservice architecture. Excellent communication skills in English (B2+). It is a strong plus if you have: (optional) Cloud technology experience (AWS, Azure, GCP). Knowledge of CI/CD toolchains like Jenkins. Background in Systems Administration across Linux/AIX/WAS platforms. Test Automation skills. Language Required for the role: English (B2+ level) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Backend Engineer role focused on designing and owning JVM-based microservices in a distributed, event-driven architecture on AWS. The position involves building scalable services for complex domains like route optimization and geo-routing, with full responsibility from design to production. You will work with diverse data stores, messaging systems, and observability tooling in a high-ownership, senior engineering environment. 🗂️ Requirements: Work permit for Poland, 5+ years backend development experience in Java or Kotlin, Strong experience with distributed systems and microservices architecture, Hands-on production experience with AWS services (ECS, Lambda, S3, RDS or DynamoDB), Experience with PostgreSQL, Experience with DynamoDB or other NoSQL databases, Strong knowledge of Docker and containerization, Experience with CI/CD pipelines (GitHub Actions), Ability to design and build event-driven systems with message brokers 📃 Skills: Java, Kotlin, AWS, ECS, Lambda, S3, RDS, DynamoDB, PostgreSQL, Docker, GitHubActions, RabbitMQ, SNS, SQS, Redis, RedShift, OpenTelemetry, Prometheus, Grafana, REST, APIGateway, ECR 🏢 Description: Company Description You'll be a core member of a small, high-ownership engineering team building and evolving the distributed microservices backend that powers our app. You'll work across a complex domain – route optimization, schedule ingestion, geo-routing, and carrier data – at real scale, on AWS. This is not a role for someone who waits for specs to land in their inbox. You'll take full ownership of services from design through production, make architectural decisions, and proactively identify and fix problems before they become incidents. What you'll work on Design, build, and maintain JVM-based microservices (Java / Kotlin) running on AWS ECS, App Runner, and Lambda Work with a rich data layer: PostgreSQL, DynamoDB, RedShift, Redis, and S3 Build and consume event-driven integrations via RabbitMQ and SNS Collaborate on API design across REST (API Gateway) and BFF patterns Instrument services with OpenTelemetry, Tempo, Prometheus, and Grafana Ship via GitHub Actions CI/CD pipelines with Docker and ECR Work with external integrations including Auth0, GraphHopper, PostHog, and Sentry Participate in architecture decisions and technical direction – your opinion will carry weight Job Description Must-haves: Work permit for Poland 5+ years of professional backend development in Java and/or Kotlin Solid understanding of distributed systems design, microservice patterns, and event-driven architecture Hands-on production experience with AWS (ECS, Lambda, S3, RDS or DynamoDB) Experience with relational databases (PostgreSQL) and NoSQL (DynamoDB or similar) Strong command of Docker and containerized deployments Experience with CI/CD pipelines – we use GitHub Actions Clean code as a practice, not a talking point – you write code that your colleagues can confidently extend Genuine ability to self-direct: you can take a loosely defined problem, break it down, make decisions, and deliver Strong plus: Kotlin specifically (greenfield services are Kotlin-first) Experience with message brokers (RabbitMQ, SQS/SNS) Familiarity with observability tooling (OpenTelemetry, Prometheus/Grafana stacks) Background in logistics, routing, geospatial, or supply chain domains Experience integrating third-party APIs (auth providers, mapping/routing engines, analytics) Qualifications How we work Small team, high trust – no micromanagement, no approval chains for every decision GitHub-centric workflow – PRs, reviews, and automated pipelines keep quality high without bureaucracy Observability-first – we monitor, alert, and fix things before users notice Clean code culture – we refactor, we review, we don't let tech debt compound silently AWS-native – we use managed services where they make sense and containers everywhere else What we offer Competitive salary benchmarked to your market Remote-friendly setup (we care about output, not location) Direct impact on a product used by global logistics professionals every day Work in a genuinely interesting domain – intermodal routing is hard, and the problems are real A lean, senior team where your architecture decisions actually ship Additional Information Are you the perfect match? Send your portfolio, CV , and a short message about why you’re the perfect match to us

🏢 Summary: Backend Developer role focused on designing, building, and maintaining scalable Java and Kotlin-based applications and microservices within an international team. The position involves developing high-quality backend systems, collaborating with cross-functional teams, and optimizing distributed systems performance. The role emphasizes clean code, modern frameworks, and agile delivery practices. 🗂️ Requirements: 5+ years of backend development experience with Java 8+ and Kotlin, Strong knowledge of Spring Framework and Spring Boot, Experience building RESTful APIs and microservices, Experience with SQL and NoSQL databases, Understanding of Agile/Scrum methodologies 📃 Skills: Java, Kotlin, Spring, SpringBoot, REST, Microservices, SQL, NoSQL, PostgreSQL, MongoDB, Agile, Scrum 🏢 Description: We are looking for skilled Java & Kotlin Developers to join our growing technology team in Poland. As part of an international development group, you’ll design, build, and maintain scalable backend systems using Java and modern frameworks. You’ll collaborate closely with cross-functional teams to deliver high-quality, reliable, and efficient software solutions. Key Responsibilities Design, develop, and maintain Java-based applications and microservices. Write clean, efficient, and testable code following best practices and coding standards. Collaborate with front-end developers , DevOps engineers , and QA teams to ensure seamless integration and delivery. Participate in code reviews , architecture discussions, and agile ceremonies. Contribute to technical documentation and continuous improvement of development processes. Troubleshoot and optimize performance across distributed systems. Requirements 5+ years of experience in backend development using Java 8+ Kotlin . Strong understanding of Spring Framework / Spring Boot . Experience with RESTful APIs , microservices , and SQL / NoSQL databases (e.g., PostgreSQL, MongoDB). Knowledge of Agile / Scrum methodologies. Good command of English (B2 or higher) – Polish language skills are a plus. Nice to Have Experience with cloud platforms (AWS, Azure, or GCP). Familiarity with message brokers (Kafka, RabbitMQ). Knowledge of unit testing and test automation frameworks (JUnit, Mockito). Interest in DevOps or system design concepts. How to Apply If you’re passionate about building high-quality Java applications and want to be part of a dynamic engineering team, send your CV

🏢 Summary: Join a high-impact financial services transformation program modernizing and extending Product Control and Risk applications for a unified operating model. The role involves full-stack C#/.NET development, legacy modernization, and cloud migration in close collaboration with Business Analysts. 🗂️ Requirements: Commercial C#/.NET development experience, Full-stack development capability, Experience with modern and legacy applications, MongoDB or NoSQL database knowledge, Agile delivery experience, Direct collaboration with Business Analysts, End-to-end feature ownership, Strong problem-solving skills 📃 Skills: C#, .NET, MongoDB, SQL, WPF, NoSQL, Cloud, Agile 🏢 Description: About the project Join an international technology team supporting a large-scale transformation program within the financial services sector. The project focuses on consolidating multiple business entities into a unified operating model. The team is extending existing platforms to support additional business entities while modernizing core applications and migrating towards cloud-based solutions. The UK has been selected as the target architecture, making this a strategic, high-impact program with long-term visibility. Your responsibilities • Design, develop, and enhance business-critical applications supporting Product Control and Risk functions. • Participate in the modernization of legacy systems. • Develop scalable backend services using C#/.NET. • Work across the full software development lifecycle in a true full-stack environment. • Collaborate closely with Business Analysts to translate business requirements into technical solutions. • Contribute to cloud adoption and application modernization initiatives. Tech Stack • C# • .NET • MongoDB • SQL • WPF • Cloud technologies, including modernization and migration initiatives What we're looking for • Strong commercial experience with C#/.NET development. • Full-stack mindset with the ability to work across backend and frontend technologies. • Experience working with both modern and legacy applications. • Knowledge of MongoDB or other NoSQL databases. • Comfortable working in Agile environments and collaborating directly with Business Analysts. • Strong problem-solving skills and willingness to take ownership of features from design through deployment. Nice to have • Experience within banking or financial services. • Knowledge of Product Control, Risk systems, or trading environments. • Exposure to cloud migration or application modernization projects. • Experience working with financial trading platforms.

🏢 Summary: The role involves developing and maintaining high-performance backend systems for advertising and e-commerce platforms, focusing on scalable microservices and real-time data processing using Kotlin and Spring Boot. You will design low-latency services, contribute to system architecture, and support production environments in a high-scale setting. The position also emphasizes AI-assisted development practices and collaboration within engineering teams. 🗂️ Requirements: 3+ years of backend development experience, Very good knowledge of Kotlin, Very good knowledge of Spring Boot, Hands-on experience with microservices architecture, Experience with NoSQL databases, Experience with MongoDB, Experience building and maintaining backend systems and APIs, Understanding of system design and scalable architecture, Experience with high-performance and high-scale systems, English B2 level, Polish C1 level, Work permit in the European Union, Openness to occasional visits to Warsaw office, Experience using AI-powered coding assistants 📃 Skills: Kotlin, SpringBoot, MongoDB, NoSQL, Microservices, REST, APIs, GenAI, Claude, GitHubCopilot, Cursor, AWS, Azure 🏢 Description: 🟣 You will be: developing and maintaining backend systems for advertising and e-commerce platforms, building low-latency, high-performance services processing large volumes of data, developing scalable microservices and APIs using Kotlin and Spring Boot, working on real-time event processing and advertising targeting mechanisms, contributing to architecture design and system scalability improvements, collaborating with stakeholders and supporting engineering best practices, including code reviews and code quality standards, participating in technical readiness/on-call support for production incidents a few days per month. 🟣 Your profile: 3+ years of professional experience in backend development, very good knowledge of Kotlin and Spring Boot, openness to occasional visits to the Warsaw office (1–2 days per quarter), hands-on experience with microservices architecture, practical experience working with NoSQL databases, especially MongoDB, experience building and maintaining backend systems and APIs, understanding of system design and scalable architecture principles, experience working with high-performance and high-scale systems, strong analytical thinking and problem-solving skills, ability to collaborate effectively with stakeholders and engineering teams, good communication skills in English (B2) and Polish (C1), practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery. Work from the European Union region and a work permit are required. 🟣 Nice to have: experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work, interest in and familiarity with emerging AI-driven practices (e.g. agent-based workflows, automation patterns, AI-augmented development), with a willingness to explore and experiment beyond standard approaches. 🟣 Recruitment Process: CV review – HR call – Technical Interview – Client Interview – Decision 🎁 Benefits 🎁 ✍ Development: development budgets of up to 6,800 PLN, we fund certifications e.g.: AWS, Azure, access to Udemy, O'Reilly (formerly Safari Books Online) and more, events and technology conferences, technology Guilds, internal training, Xebia Upskill. 🩺 We take care of your health: private medical healthcare, multiSport card - we subsidise a MultiSport card, mental Health Support. 🤸‍♂️ We are flexible: B2B or employment contract, contract for an indefinite period.

🏢 Summary: Long-term role focused on designing and developing a scalable Design System component library for a banking mobile application using Kotlin Multiplatform. The position involves cross-platform mobile development, architectural decisions, and close collaboration with UX/UI and backend teams in an Agile environment. Emphasis is placed on code quality, performance, accessibility, and engineering best practices. 🗂️ Requirements: Minimum 5 years of experience in mobile application development, Strong knowledge of Kotlin and Android environment, Commercial experience with Kotlin Multiplatform, Experience with Compose Multiplatform and Jetpack Compose, Knowledge of SwiftUI and iOS platform, Experience in application architecture design (e.g. MVVM, Clean Architecture), Experience in financial or fintech projects, Knowledge of accessibility standards (WCAG) 📃 Skills: Kotlin, Android, KotlinMultiplatform, ComposeMultiplatform, JetpackCompose, SwiftUI, iOS, MVVM, CleanArchitecture, WCAG, Git, CI/CD, Jira, Docker 🏢 Description: Opis projektu: Projekt realizowany jest w ramach rozwoju nowoczesnych aplikacji mobilnych i webowych w sektorze bankowym, które są stale rozwijane i rozbudowywane o nowe funkcjonalności. Osoba na tym stanowisku dołączy do zespołu odpowiedzialnego za tworzenie i rozwój komponentów Design Systemu dla aplikacji mobilnej, co ma kluczowe znaczenie dla zapewnienia spójności i skalowalności interfejsu użytkownika. Praca odbywa się w metodyce Agile, w krótkich, dwutygodniowych sprintach, z naciskiem na wysoką jakość rozwiązań oraz współpracę między zespołami technologicznymi, UX/UI i biznesowymi. Projekt ma charakter długoterminowy i daje realny wpływ na rozwój kluczowych produktów cyfrowych w organizacji. Zakres zadań: Projektowanie i rozwój biblioteki komponentów dla aplikacji mobilnej z wykorzystaniem Kotlin Multiplatform. Współpraca z zespołami domenowymi, backendem oraz UX/UI przy tworzeniu skalowalnych rozwiązań. Utrzymywanie wysokiej jakości kodu poprzez code review oraz testy. Optymalizacja aplikacji pod kątem wydajności, dostępności oraz zgodności z WCAG. Wdrażanie dobrych praktyk inżynieryjnych oraz automatyzacji procesów. Udział w podejmowaniu decyzji architektonicznych. Wymagania: Minimum 5 lat doświadczenia w programowaniu aplikacji mobilnych. Bardzo dobra znajomość Kotlin oraz środowiska Android. Doświadczenie w pracy z Kotlin Multiplatform. Znajomość Compose Multiplatform oraz Jetpack Compose. Znajomość SwiftUI oraz platformy iOS. Doświadczenie w projektowaniu architektury aplikacji (np. MVVM, Clean Architecture). Umiejętność pracy zespołowej i komunikacji z zespołami produktowymi oraz biznesowymi. Doświadczenie w projektach z sektora finansowego lub fintech. Znajomość zasad dostępności (WCAG). Mile widziane: Znajomość narzędzi Git, CI/CD, Jira oraz Docker. Doświadczenie w pracy z procesami automatyzacji. Doświadczenie w budowie lub utrzymaniu design systemów.