Android Developer

🏢 Summary: Remote B2B role for a Mobile Developer to build and optimize advertising components in a large-scale Android e-commerce application. The position focuses on native Android development combined with WebView-based ad integrations in a performance-critical environment. You will ensure high app performance while integrating JavaScript-driven advertising solutions. 🗂️ Requirements: 3+ years commercial experience in native Android development with Kotlin, Strong knowledge of mobile architecture patterns (MVVM, MVI, Clean Architecture), Hands-on experience with Android WebView and native-to-web communication, Solid knowledge of JavaScript, HTML and CSS, Experience with REST APIs and asynchronous programming, Ability to write unit and integration tests, Strong understanding of software engineering principles, Knowledge of data structures and algorithms 📃 Skills: Kotlin, Android, WebView, JavaScript, HTML, CSS, REST, Git, MVVM, MVI, CleanArchitecture, Asynchronous, UnitTesting, IntegrationTesting, DataStructures, Algorithms 🏢 Description: Salary: 960 - 1200 PLN/MD + VAT (B2B) Work Model: remote Why choose this offer? Impact on the development of the largest e-commerce system in Poland You can expect a flexible work organization The Jit community will bring you a nice time during regular integration meetings Project We are looking for a Mobile Developer to support a project in the Advertising domain for one of Poland’s leading e-commerce platforms. The engineer will work within a team responsible for the technological layer of ad delivery in a large-scale mobile application. You will contribute to building and optimizing advertising components in a performance-critical environment, balancing monetization goals with excellent user experience. This includes ensuring that advertising scripts and integrations do not negatively impact application performance (e.g., blocking the main thread). We are looking for a hybrid-minded developer who understands both native mobile development and web-based ad technologies—especially JavaScript execution within WebView contexts—while maintaining a strong foundation in the native Android stack. Expected competences and knowledge 3+ years of commercial experience in native Android development (Kotlin) Strong understanding o f mobile application architecture patterns (e.g., MVVM, MVI, Clean Architecture) Hands-on experience with Android WebView , including native-to-web communication Solid understanding of JavaScript, HTML, and CSS Experience with REST APIs and asynchronous programming Ability to write unit and integration tests Strong understanding of software engineering principles, data structures, and algorithms Proactive problem-solving mindset and passion for building high-quality user experiences (UX) Nice to have : Experience with high-traffic mobile applications Knowledge of RxJava/RxKotlin, Coroutines, or Jetpack Compose Familiarity with A/B testing Open-source contributions or active GitHub profile Experience in Agile/Scrum environments Technologies you'll work with Kotlin (Android) JavaScript HTML / CSS Android WebView REST APIs Git Jetpack Compose Coroutines / RxJava Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999 . With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies. Jit Team has had a successful partnership with our Client since spring 2021 , with multiple software development teams dedicated to our Client's platforms. These teams operate autonomously, designing platform components through micro-services. Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale , where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Senior Mobile Developer role for a large-scale e-commerce mobile application focused on ad delivery and user experience improvements. The position involves designing, developing, and optimizing high-performance Android features while collaborating with cross-functional teams in a fast-paced environment. The offer includes remote work with occasional visits to Warsaw and a high degree of team autonomy. 🗂️ Requirements: 5+ years of commercial Android development experience, Strong Kotlin knowledge, Experience with MVVM, MVI, or Clean Architecture, Experience with REST APIs, Knowledge of asynchronous programming, Ability to write unit and integration tests, Experience with Git, Understanding of software engineering principles, data structures, and algorithms, Experience with CI/CD pipelines, English communication skills 📃 Skills: Kotlin, Android, REST, Git, MVVM, MVI, CI/CD, RxJava, RxKotlin, Coroutines, JetpackCompose 🏢 Description: Salary: 1000 - 1200/ MD + VAT (B2B) Remote: remotely (with occasional visits to the client's office - Warsaw) Why choose this offer? Working in a team you can always count on we have on board top-class specialists and experts in their areas of expertise A high degree of autonomy in terms of organizing your teams work - we encourage you to develop continuously and try out new things Work on a consumer-focused mobile project improving category experience and user interactions, directly impacting business results Project We are looking for a Senior Mobile Developer to support a project for one of Poland’s leading e-commerce platforms. The engineer will work within a team responsible for the technological layer of ad delivery in a large-scale mobile application. You will work closely with product owners, designers, and other engineers to translate user needs into robust, high-performance mobile experiences . This role is ideal for someone with solid experience in mobile development, a strong understanding of software engineering principles, and a desire to grow their expertise in a fast-paced e-commerce environment. What you will be doing on this postion: Design, develop, test, and deploy features, ensuring high quality, performance, and responsiveness Collaborate with product, design, and other engineering teams to define and implement innovative solutions Participate in code reviews, contribute to technical discussions, and help maintain high code quality standards Identify and resolve performance and scalability issues Continuously improve our development processes, tools, and infrastructure Expected competences and knowledge 5+ years of commercial experience in native Android development (Kotlin) Strong understanding o f mobile application architecture patterns (e.g., MVVM, MVI, Clean Architecture) Experience with REST APIs and asynchronous programming Proficiency in writing unit and integration tests Familiarity with version control systems (e.g., Git) Solid understanding of software engineering principles, data structures, and algorithms Experience with continuous integration and continuous delivery (CI/CD) pipelines Good communication skills in English, both written and spoken Nice to have : Experience with high-traffic mobile applications Knowledge of RxJava/RxKotlin, Coroutines, or Jetpack Compose Familiarity with A/B testing Open-source contributions or active GitHub profile Experience in Agile/Scrum environments Technologies you'll work with Kotlin (Android) REST APIs Git Jetpack Compose Coroutines / RxJava Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999 . With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies. Jit Team has had a successful partnership with our Client since spring 2021 , with multiple software development teams dedicated to our Client's platforms. These teams operate autonomously, designing platform components through micro-services. Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale , where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: B2B contract for a Senior Android Developer in a financial project building and enhancing modern payment solutions used by thousands of customers. The role focuses on high-quality, scalable and secure Android applications, contributing to architecture and full SDLC within a cross-functional team. Hybrid work model with strong emphasis on modern mobile technologies and CI/CD practices. 🗂️ Requirements: Minimum 5 years commercial experience with Kotlin and Java, Expert knowledge of Android SDK, Strong experience with Jetpack Compose, Solid understanding of MVVM and Clean Architecture, Experience with Coroutines, StateFlow or RxJava, Experience with dependency injection and multi-module architecture, Experience writing unit, integration and UI tests, Knowledge of JUnit, Mockito, Espresso, Turbine, Understanding of Gradle and CI/CD pipelines, Experience integrating RESTful APIs, English level B2 or higher 📃 Skills: Kotlin, Java, Android, SDK, Jetpack, Compose, MVVM, CleanArchitecture, Coroutines, StateFlow, RxJava, JUnit, Mockito, Espresso, Turbine, Gradle, CI/CD, REST, Git 🏢 Description: Salary: 1000 - 1200 PLN/day on B2B Work model: remote Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings Project You will be involved in a financial project focused on building and enhancing modern payment solutions used by thousands of customers. The project emphasizes high-quality mobile development, scalability, security, and seamless user experience across multiple platforms. You will work in a cross-functional team, contributing to the entire software development lifecycle while helping shape the architecture and technical direction of the Android applications. Responsibilities you'll have Design, develop, and maintain Android applications using Kotlin, Java, and Jetpack Compose Create scalable and maintainable solutions following MVVM and Clean Architecture principles Collaborate with iOS and web teams to maintain platform consistency and alignment Implement and optimize reactive data flows using Coroutines, StateFlow and RxJava Develop and maintain multi-module application architecture and dependency injection solutions Write and maintain automated tests, including unit, UI and flow tests Contribute to CI/CD processes, code reviews, and cupport integration with RESTful APIs Expected competences and knowledge Strong commercial experience with Kotlin and Java development - min. 5 years Expert knowledge of Android SDK and Jetpack Compose Solid understanding of Android Architecture Components , MVVM, and Clean Architecture Experience with reactive programming using Coroutines, StateFlow and/or RxJava Practical knowledge of dependency injection and multi-module application architecture Experience in writing unit, integration, UI, and flow tests using JUnit, Mockito, Espresso and Turbine Good understanding of Gradle, CI/CD pipelines , and version control systems Excellent communication skills in English (min. B2 level) Nice to have: - experience in the payments or fintech domain - backend development experience with Java - understanding of iOS development and web technologies (Angular, TypeScript, JavaScript Technologies you'll work with Kotlin Java Android SDK Jetpack Compose MVVM / Clean Architecture Coroutines, StateFlow, RxJava CI/CD pipelines RESTful APIs Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Senior iOS Mobile Developer role focused on advertising technology within a large-scale e-commerce mobile application. The position involves integrating and optimizing ad formats, supporting video ad delivery, debugging native-to-web communication, and ensuring high performance and privacy compliance in a fully remote B2B environment. The role requires strong expertise in Swift, WebKit, JavaScript, and modern mobile architecture patterns. 🗂️ Requirements: 5+ years of commercial experience in native iOS development with Swift, Knowledge of MVVM, MVI, and Clean Architecture, Experience with WebKit and WKWebView, Knowledge of JavaScript, HTML, and CSS, Experience with RESTful APIs and asynchronous programming, Ability to write unit and integration tests, Knowledge of Git version control, Understanding of software engineering principles, data structures, and algorithms, Experience with reactive programming, Knowledge of Jetpack Compose and coroutines, Experience with A/B testing frameworks, Experience working in Agile/Scrum environments 📃 Skills: iOS, Swift, JavaScript, WebKit, WKWebView, HTML, CSS, REST, Git, MVVM, MVI, RxJava, RxKotlin, Combine, Compose, Coroutines, Agile, Scrum 🏢 Description: Salary: 1000 - 1200 PLN/day on B2B Remote: 100% Remote Why choose this offer? Impact on the development of the largest e-commerce system in Poland You can expect a flexible work organization Long-term cooperation within a stable ecosystem The Jit community will bring you a nice time during regular integration meetings Project The engineer assigned to the project should understand the intersection of Native Mobile development and the dynamic AdTech environment. The ideal consultant is someone who recognizes that in-app advertising is not just an "image," but a complex ecosystem built on IAB (Interactive Advertising Bureau) standards. Performance & UX Mindset: They must be able to balance business objectives (monetization) with user experience, ensuring, for example, that advertising scripts do not block the application's main thread. Hybrid Developer (iOS Developer with JavaScript knowledge): The candidate should be comfortable using JavaScript within WebViews to understand why an ad creative may not be reporting events correctly, while still maintaining a strong foundation in the native technology stack. We are looking for a Senior Mobile Developer to provide project support in the Advertising domain. Your specialist will support a team responsible for the technological aspects of ad delivery and display within mobile application. Responsibilities: Integracja i rozwój komponentów reklamowych: Implementacja nowych formatów reklamowych (np. wideo, display, native ads) bezpośrednio w głównej aplikacji Integration and development of advertising components: Implementation of new advertising formats (e.g. video, display, native ads) directly within the main application Video Ad Stack support: Optimising video ad playback, ensuring smooth transitions and correct triggering of tracking events. Cross-team collaboration: Working closely with Core Mobile teams to ensure consistency with the app’s architecture and the highest standards of security and performance. Privacy management (Compliance): Implementing and maintaining data privacy solutions, such as GDPR consent management (CMP), and adapting to changes in systems. Debugging ‘difficult cases’: Analysing and resolving issues at the interface between the app’s native code and external advertising libraries (SDKs) and web creatives. Frontend/Backend support: Actively participating in the design of solutions that require communication between the mobile app and advertising systems. Experience working with large-scale, high-traffic mobile apps. Knowledge of reactive programming (e.g. RxJava/RxKotlin, Combine). Knowledge of Jetpack Compose and coroutines. Experience working with A/B testing frameworks. Contributions to open-source projects or a strong GitHub profile. Experience working in an Agile/Scrum environment Expected competences and knowledge Over 5 years’ commercial experience in developing native mobile applications for iOS (Swift). In-depth understanding of mobile application architecture patterns (e.g. MVVM, MVI, Clean Architecture). Practical experience with WebKit and WKWebView, including in the area of native-to-web communication (e.g. handling JS messages via WKScriptMessageHandler and invoking JavaScript code). Solid knowledge of JavaScript and core web technologies (HTML/CSS) to effectively integrate and debug web-based advertising content. Experience working with RESTful APIs, asynchronous programming and efficient data processing. Proficiency in writing unit and integration tests. Knowledge of version control systems (e.g. Git). A solid understanding of software engineering principles, data structures and algorithms. A proactive approach to problem-solving and a passion for creating excellent user experiences (UX). Technologies you'll work with iOS Swift JavaScript WebKit REST API Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999 . With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies. Jit Team has had a successful partnership with our Client since spring 2021 , with multiple software development teams dedicated to our Client's platforms. These teams operate autonomously, designing platform components through micro-services. Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale , where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: B2B role for an experienced Java Developer to design and develop high-availability, horizontally scalable microservices supporting an advertising and billing platform. The position involves working on production systems with real impact on architecture, distributed communication, and system performance. Collaboration with cross-functional teams and Polish-speaking stakeholders is required. 🗂️ Requirements: Minimum 4 years commercial experience as Java Developer, Hands-on experience in production environments, Higher education in relevant field (completed or in progress), Professional proficiency in Polish (spoken and written), Strong knowledge of Java 11+, Practical experience with Spring Boot, Experience with microservices architecture in production, Experience with Kafka or RabbitMQ, Understanding of distributed systems, Advanced knowledge of SQL without ORM usage, Experience with monitoring, logging and metrics, Understanding of asynchronous communication, Familiarity with reactive programming 📃 Skills: Java, Spring, SpringBoot, SQL, NoSQL, Kafka, RabbitMQ, WebFlux, Reactor, Microservices, Kotlin, Hibernate, JPA, Monitoring, Logging 🏢 Description: Salary: 750 - 1000 PLN/MD on B2B Work model: elastic hybrid from Gdynia/Warszawa/Rzeszów/Kraków Why choose this offer? Real impact on system architecture Opportunity to design solutions with high availability and horizontal scalability Collaboration within a mature, cross-functional team Direct communication with Product Owners and non-technical stakeholders Project The team is directly involved in managing advertising campaigns. This enables sellers and advertising agencies to create ads, which are then delivered for airing on the company's portal (e.g., sponsored listings, homepage) and on other platforms such as Google. Additionally, the team is responsible for budgeting and advertising billing. They collaborate closely with teams handling the airing of various types of ads, frontend development, and offers visible on the portal. The project is conducted primarily in Polish, therefore professional working proficiency in Polish (spoken and written) is required. Expected competences and knowledge Minimum 4 years of commercial experience as a Java Developer, with mandatory hands-on experience in production environments Required higher education in a relevant field (or currently in progress) Fluent or professional working proficiency in Polish (spoken and written) Good knowledge of Java 11+ (Kotlin is a plus) First hands-on experience with Spring Boot Practical experience with microservices architecture in production environments Familiarity with messaging systems such as Kafka or RabbitMQ Basic understanding of distributed systems and asynchronous communication Solid understanding of relational databases ( SQL ), including indexes, constraints, and transactions (without relying on ORM frameworks such as Hibernate/JPA) Experience working with monitoring, logging, and application metrics Ability to work in a cross-functional team environment Familiarity with reactive programming concepts Technologies you'll work with Java 11+ Spring Boot NoSQL databases Spring WebFlux / Project Reactor Relational databases (advanced SQL) Nice to have: Kafka Kotlin Event-driven architecture Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999 . With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies. Jit Team has had a successful partnership with our Client since spring 2021 , with multiple software development teams dedicated to our Client's platforms. These teams operate autonomously, designing platform components through micro-services. Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale , where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Junior-level role in a project building a high-performance, scalable messaging platform for financial institutions, focused on message transport, transformation, routing, and monitoring in a critical environment. The position offers hands-on experience with enterprise financial systems and development toward Java backend or DevOps paths. Work is in a hybrid model with on-call support in a time-sensitive setup. 🗂️ Requirements: Basic experience in Java, Interest in DevOps, Good command of English (spoken and written), Availability for on-call support (rotational shifts), Ability to work in time-sensitive environments, Problem-solving skills, Willingness to work on-site 2 days per week 📃 Skills: Java, Spring, SpringBoot, Kubernetes, OpenShift, Docker, ActiveMQ, IBMMQ, Elasticsearch, PostgreSQL, DB2, ArgoCD, GitOps, Incentage 🏢 Description: Salary: 252 - 350 PLN/ day net + vat (B2B/Civil contract) Remote: elastic hybrid from our office in Gdynia/Gdańsk (2 days per week on-site) Why choose this offer? International working environment High level of autonomy and collaboration within the team Scandinavian organizational culture supporting real work-life balance Opportunity to learn how financial products and markets operate Project You’ll join a project focused on building a robust, scalable, high-performance messaging platform for financial institutions. The system handles message transport, data transformation, routing, validation, sequencing, and monitoring. It’s a critical, high-throughput environment where reliability matters and attention to detail makes a real impact. Expected competences and knowledge Junior level with strong learning mindset): Basic experience in Java (commercial or solid personal projects) Interest in DevOps, with an eagerness to learn Good command of spoken and written English Problem-solving mindset and ability to react quickly to issues Responsibility and readiness to work in time-sensitive environments Openness to collaboration and knowledge sharing (tech + business teams) Availability for on-call support (morning/evening shifts on rotation) Nice to have: Spring Boot Kubernetes / OpenShift Docker Messaging systems (Apache ActiveMQ, IBM MQ) Elasticsearch Databases (PostgreSQL, DB2) GitOps (ArgoCD) Experience with low-code platforms (e.g., Incentage IMS) What you gain: Exposure to real-world, large-scale financial systems Fast learning curve in a complex enterprise environment Supportive team that helps you grow (no “figure it out alone” culture) Development path toward Java backend / DevOps / Site Reliability Engineer Technologies you'll work with Spring Boot Kubernetes / OpenShift Docker Messaging systems (Apache ActiveMQ, IBM MQ) Elasticsearch Databases (PostgreSQL, DB2) GitOps (ArgoCD) Low-code platforms (e.g., Incentage IMS) Client – why choose this particular client from the Jit portfolio? Jit Team is proud to partner with one of the leading European financial groups responsible for the registration, ownership records, and financial settlement of securities traded on financial markets in Norway and recently extended to other European markets. Jit Team has been a strategic partner to our client in the area of software development since 2017 . Over the course of the partnership, Jit Team's dedicated team working for our client has grown from three to over 30 people , who have worked on the modernization of legacy applications, the implementation of new systems, and the development of a private cloud-based platform to host a variety of financial systems . About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Short-term contract for an experienced Mobile Developer to build and maintain cross-platform mobile applications using Flutter for Android and iOS. The role focuses on delivering high-performance, responsive apps with strong architecture and best practices. The project runs until the end of June in an international environment. 🗂️ Requirements: Commercial experience as Mobile Developer (regular or senior level), Strong hands-on experience with Flutter, Experience with Android development, Experience with iOS development, Knowledge of mobile application architecture, Experience in building, testing and releasing mobile apps, Ability to work independently, English proficiency minimum B2 📃 Skills: Flutter, Android, iOS, Dart, Mobile, Git, CI/CD 🏢 Description: Salary: 800 - 1000 PLN/MD + VAT (B2B) Remote: elastic hybrid from Gdynia Why choose this offer? Opportunity to work with an international client from the safety/technology sector The international work environment will give you the opportunity to interact with the English language on a daily basis The Jit community will bring you a nice time during regular integration meetings Project We are looking for a Mobile Developer (Flutter + Android / iOS) who will join to our client operating in the safety and risk management industry for a short-term project running until the end of June. You will be responsible for developing and maintaining mobile applications across both platforms, ensuring high performance, responsiveness, and a seamless user experience. Expected competences and knowledge Proven commercial experience as a Mobile Developer (regular to senior level) Strong hands-on experience with Flutter and Android / iOS development Solid understanding of mobile application architecture and best practices Experience in building, testing, and releasing mobile applications Ability to work independently and take ownership of tasks Strong problem-solving skills Good communication skills in English - min. B2 level Technologies you'll work with Flutter Android / iOS About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Senior Frontend Developer with strong .NET background to design and build a financial web application (Economic Profitability Calculator) in an Agile environment. The role focuses on Angular-based frontend development with backend support in .NET, ensuring high code quality and CI/CD automation. Hybrid work model with close collaboration with Product Owner and domain experts. 🗂️ Requirements: 8+ years of experience with Angular, 5+ years of experience in web development (HTML, JavaScript, TypeScript, CSS), 3+ years of experience in .NET and C# web development, 3+ years of experience with SQL, 2+ years of experience with Docker and Kubernetes, Experience with CI/CD process automation, Experience working in Agile environment, English proficiency minimum B2 level 📃 Skills: Angular, TypeScript, HTML, JavaScript, CSS, .NET, C#, SQL, Docker, Kubernetes, MSSQL, Dapper, Git, JIRA, Bamboo, Confluence, Bitbucket 🏢 Description: Salary: 900 - 1200 PLN/day on B2B Work model: elastic hybrid from Gdynia / Gdańsk (at least 2 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings Project We are looking for a passionate developer with a strong focus on frontend development and a background in .NET to join the Economic Profitability Calculator Team of our financial sector client. You will play a valuable role in designing and building an EPC web application, working closely with Subject Matter Experts and having a real influence on the product. Responsibilities you'll have Designing and implementing EPC business processes with a strong focus on the frontend part Ensuring code quality through high test automation coverage, code reviews, and pair programming Working in an Agile setup Cooperating closely with the Product Owner and Subject Matter Experts Maintaining and extending CI/CD process automation Expected competences and knowledge 8+ years of experience with Angular 5+ years of experience in web development ( HTML, JavaScript, TypeScript, CSS ) 3+ years of experience in .NET and C# web development 3+ years of experience with SQL 2+ years of experience with Docker and Kubernetes Technology enthusiast focused on high product quality and good UX Passion for frontend development with experience in backend development Team-player mindset Willingness to continuously improve competences Good communication skills, including communication in English (min. B2 level) Nice to have Experience with UI test automation Experience with CI/CD tools (Bamboo) Experience using an AI coding assistant Technologies you'll work with Angular TypeScript HTML JavaScript CSS .NET C# Docker Kubernetes MS SQL Server Dapper Git Atlassian Stack (JIRA, Bamboo, Confluence, Bitbucket) Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Hybrid Flutter and React developer role focused on building and maintaining mobile (iOS/Android) and web applications in the e-commerce domain. The position involves developing new features, integrating with backend APIs, and contributing to architectural decisions. The offer emphasizes modern technologies, technical ownership, and impact on product direction. 🗂️ Requirements: Strong experience with Flutter and Dart, Experience building mobile applications for iOS and Android, Knowledge of mobile architectures (MVVM, MVC or similar), Experience integrating REST or GraphQL APIs, Ability to debug and optimize mobile applications, Strong knowledge of React, Proficiency in JavaScript or TypeScript, Experience with modern frontend development (Hooks, state management), Solid knowledge of HTML and CSS, Experience implementing UI based on Figma designs 📃 Skills: Flutter, Dart, React, JavaScript, TypeScript, HTML, CSS, REST, GraphQL, MVVM, MVC, Figma, iOS, Android, Hooks, StateManagement 🏢 Description: Salary: 1000 - 1300 pln/md B2B Work model: elastic hybrid from Gdynia (at least 2 days per week from the office) Why choose this offer? We focus on modern technologies and a flexible approach – working in an environment where efficiency, collaboration, and autonomy matter. An organizational culture driven by innovation , transparency , and strong partnership within the team. The opportunity to work with leading brands in the e-commerce industry. A smaller organizational structure that allows for a real impact on project direction and technology decisions. Responsibilities (Flutter / Mobile) Design and develop mobile applications (iOS / Android) using Flutter Implement user interfaces based on designs and design systems (Figma) Integrate mobile applications with backend services ( REST / GraphQL APIs ) Ensure high code quality, performance, and application stability Participate in mobile architecture and technical decision-making Maintain and further develop existing mobile applications Additional Responsibilities (React / Web Frontend) Develop and maintain web applications using React Implement responsive and user-friendly interfaces Collaborate on building and maintaining shared UI components Integrate frontend applications with backend services and manage application state Competences and knowledge Flutter / Mobile Strong experience with Flutter and Dart Proven experience in building mobile applications for iOS and Android Understanding of mobile application architectures (e.g. MVVM, MVC , or similar) Experience with API integration Ability to debug, optimize, and improve mobile application performance Frontend / React Strong knowledge of React and JavaScript / TypeScript Experience with modern frontend development (hooks, state management) Solid understanding of HTML and CSS (or CSS-in-JS solutions) Nice to Have Experience with publishing applications to App Store and Google Play Familiarity with CI/CD pipelines for mobile or frontend projects Experience with testing ( unit / widget / e2e ) Knowledge of Material Design guidelines Experience working in Agile / Scrum product teams Understanding of backend systems or overall system architecture Client – why choose this particular client from the Jit portfolio? Polish clothing company originating from Gdańsk is one of the notable examples of business success. Over more than thirty years of its existence, it has come a long way from a small local import company to a major player in the apparel market. Today, it operates in over 25 markets , runs a network of more than 2,000 physical stores , and is rapidly expanding its international e-commerce presence. In recent years, the company has been focusing its investments primarily on IT, which has become a key driver of its business growth. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Offer for an experienced Android Developer to design, develop, and maintain native Android applications using Kotlin and Java in a hybrid work model. The role focuses on building high-quality, scalable applications, integrating APIs, and collaborating with cross-functional teams. The position includes code reviews, performance optimization, and technical mentorship responsibilities. 🗂️ Requirements: Proven experience in native Android development, Strong portfolio of released Android applications, Expertise in Kotlin, Expertise in Java, Strong knowledge of Android SDK and architecture components, Experience with RESTful APIs and JSON, Knowledge of MVVM, MVP, or similar architectural patterns, Experience with Git version control, Bachelor’s degree in Computer Science, Software Engineering, or related field 📃 Skills: Kotlin, Java, Android, SDK, MVVM, MVP, REST, JSON, Git 🏢 Description: B2B: 130-140 zł/h netto + VAT Location" Hybrid (6 days per month from Cracow's office) Tasks: Design, develop, and maintain high-quality native Android applications using Kotlin and Java Collaborate with cross-functional teams to define, design, and implement new features Participate in code reviews to ensure code quality, performance, and security standards Optimize applications for maximum speed, efficiency, and scalability Integrate third-party APIs and services to enhance application functionality Identify and resolve bugs and performance bottlenecks promptly Stay updated with the latest industry trends, tools, and best practices in Android development Contribute to technical documentation and provide mentorship to junior team members Required skills and qualifications: Proven experience in native Android development with a strong portfolio of released applications Expertise in Kotlin and Java programming languages Solid understanding of Android SDK, architecture components, and lifecycle management Experience with RESTful APIs, JSON, and third-party libraries and SDKs Knowledge of MVVM, MVP, or other architectural patterns Familiarity with version control systems such as Git Strong problem-solving skills and attention to detail Excellent communication skills and ability to work effectively within a team Bachelor’s degree in Computer Science, Software Engineering, or related field Relevant certifications in Android development are a plus Offers: Hybrid work model: 6 days per month from the office in Cracow Multisport card Private healthcare Life insurance PowerYou platform - e-learning