Senior Fullstack Engineer

🏢 Summary: FullStack Software Engineer role in a global payments platform project within the financial sector, focused on developing and modernizing backend and frontend components in a microservices architecture. The position involves migrating legacy systems to modern solutions and delivering scalable, high-performance services in an Agile/DevOps environment. Work includes building APIs, enhancing automation, and improving system reliability and performance. 🗂️ Requirements: Strong experience with Java 11+ (preferably 17+), Hands-on experience with Kubernetes, Experience with Git and version control workflows, Proficiency in Unix/Linux and CLI tools, Solid knowledge of SQL and Oracle databases, Experience building RESTful APIs and microservices, Frontend experience with JavaScript and React, Experience working in Agile/DevOps environment, English proficiency at B2+ level 📃 Skills: Java, React, JavaScript, Kubernetes, Git, Linux, Unix, SQL, Oracle, REST, Microservices, CI/CD 🏢 Description: 📍 Location: Kraków, Poland (hybrid - 2 days per week in the office) 📄 B2B Contract: 180 - 200 PLN / hour We are looking for a FullStack Software Engineer to join an international project delivered for a large organization within the financial services sector. The team is working on a global payments platform that enables fast and secure fund transfers across multiple channels, including supplier payments, salaries, tax processing, and international transactions. This role focuses on developing and modernizing both backend and frontend components of the platform, contributing to the transition from legacy systems to a modern microservices-based architecture. You will work in an Agile, DevOps-driven environment, supporting scalable and high-performance solutions. Key Responsibilities: Develop and maintain backend and frontend applications using Java (11/17/21) and React Build and support APIs and microservices within a distributed architecture Participate in modernization initiatives, including migration from legacy systems (e.g. mainframe, WebSphere) to microservices-based solutions Collaborate with cross-functional teams to design and deliver new features Improve system performance, scalability, and reliability Contribute to automation initiatives, including test automation and CI/CD improvements Increase Straight-Through-Processing (STP) capabilities of services Work in an Agile / DevOps environment with a focus on continuous delivery Requirements: Strong experience with Java (11+), ideally Java 17+ Hands-on experience with Kubernetes Experience with Git and version control workflows Good command of Unix/Linux environments and CLI tools Solid understanding of SQL and databases (Oracle preferred) Experience in building and integrating RESTful APIs and microservices Frontend knowledge (JavaScript / React preferable) Experience working in Agile / DevOps teams Strong analytical and problem-solving skills Good communication skills and English proficiency (B2+) What We Offer: Long-term cooperation on an enterprise-scale international project Opportunity to work on modernizing large-scale payment systems Real impact on system transformation and engineering practices Private medical care (LuxMed) & Multisport card Collaboration with experienced, international engineering teams Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Frontend Engineer role in a hybrid model (Kraków) on a B2B contract, focused on building and modernizing user interfaces for a global payments platform in the financial sector. The position involves developing scalable front-end applications and micro frontends, integrating with payment systems, and working in an Agile DevOps environment. The engineer will contribute to high-performance solutions supporting international payment processing across EMEA. 🗂️ Requirements: Strong experience with React 18, Strong experience with TypeScript 5, Strong experience with Bootstrap 5, Experience with REST APIs, Understanding of microservices architecture, Experience with SQL and databases, Experience with Java 8+, Familiarity with JSP, Experience in Agile environments, Experience in DevOps environments 📃 Skills: React, TypeScript, Bootstrap, Java, SQL, REST, Microservices, JSP, CI/CD, Agile, DevOps 🏢 Description: 📍 Location: Kraków, Poland (hybrid - 2 days per week in the office) 📄 B2B Contract: 180 - 200 PLN / hour We are looking for a Senior Frontend Engineer to join an international project delivered for a large organization within the financial services sector. The team is responsible for developing and maintaining a global payments platform that enables fast and secure fund transfers across multiple channels, including supplier payments, salaries, and tax transactions. This role focuses on building modern user interfaces and front-end services that support payment processing systems (e.g. SEPA, SWIFT) as well as internal tools used across the EMEA region. You will work in an Agile, DevOps-driven environment, contributing to scalable and high-performance solutions. Key Responsibilities: Develop and maintain modern front-end applications using React, TypeScript, and Java Build UI services and micro frontends supporting payment processing systems Collaborate with backend engineers to integrate APIs and microservices Improve system usability through intuitive interfaces and user-focused design Contribute to reducing operational complexity by building interactive tools and dashboards Support automation initiatives, including test automation and CI/CD improvements Enhance system efficiency and Straight-Through-Processing (STP) capabilities Maintain and modernize legacy UI components (e.g. JSP-based solutions) Work closely with stakeholders and distributed teams across different regions Requirements: Strong hands-on experience with React 18, TypeScript 5, Bootstrap 5 Solid understanding of RESTful APIs and microservices architecture Experience working with SQL and databases Java8+ essential, Java17+ preferable Familiarity with legacy frontend technologies (e.g. JSP) Experience working in Agile / DevOps environments Strong analytical and problem-solving skills English proficiency at B2+ level Nice to Have: Experience in payments / financial systems What We Offer: Long-term cooperation on an enterprise-scale international project Opportunity to work on high-impact global payment systems Real influence on user experience and internal platform development Private medical care (LuxMed) & Multisport card Collaboration with experienced, international engineering teams Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Senior Frontend Engineer role focused on building and maintaining modern UI applications for a global payments platform in the financial sector. The position involves developing scalable front-end solutions and micro frontends supporting payment systems such as SEPA and SWIFT in an Agile, DevOps-driven environment. The engineer will contribute to high-performance interfaces, API integrations, and modernization of legacy UI components. 🗂️ Requirements: Strong hands-on experience with React 18, Strong hands-on experience with TypeScript 5, Experience with Bootstrap 5, Solid understanding of RESTful APIs, Experience with microservices architecture, Experience with SQL and relational databases, Proficiency in Java 8 or higher, Familiarity with JSP or legacy frontend technologies, Experience working in Agile environments, Experience working in DevOps environments, English proficiency at B2+ level 📃 Skills: React, TypeScript, Bootstrap, Java, SQL, REST, Microservices, JSP, SEPA, SWIFT, CI/CD, Agile, DevOps 🏢 Description: 📍 Location: Kraków, Poland (hybrid - 2 days per week in the office) 📄 B2B Contract: 180 - 230 PLN / hour We are looking for a Senior Frontend Engineer to join an international project delivered for a large organization within the financial services sector. The team is responsible for developing and maintaining a global payments platform that enables fast and secure fund transfers across multiple channels, including supplier payments, salaries, and tax transactions. This role focuses on building modern user interfaces and front-end services that support payment processing systems (e.g. SEPA, SWIFT) as well as internal tools used across the EMEA region. You will work in an Agile, DevOps-driven environment, contributing to scalable and high-performance solutions. Key Responsibilities: Develop and maintain modern front-end applications using React, TypeScript, and Java Build UI services and micro frontends supporting payment processing systems Collaborate with backend engineers to integrate APIs and microservices Improve system usability through intuitive interfaces and user-focused design Contribute to reducing operational complexity by building interactive tools and dashboards Support automation initiatives, including test automation and CI/CD improvements Enhance system efficiency and Straight-Through-Processing (STP) capabilities Maintain and modernize legacy UI components (e.g. JSP-based solutions) Work closely with stakeholders and distributed teams across different regions Requirements: Strong hands-on experience with React 18, TypeScript 5, Bootstrap 5 Solid understanding of RESTful APIs and microservices architecture Experience working with SQL and databases Java8+ essential, Java17+ preferable Familiarity with legacy frontend technologies (e.g. JSP) Experience working in Agile / DevOps environments Strong analytical and problem-solving skills English proficiency at B2+ level Nice to Have: Experience in payments / financial systems What We Offer: Long-term cooperation on an enterprise-scale international project Opportunity to work on high-impact global payment systems Real influence on user experience and internal platform development Private medical care (LuxMed) & Multisport card Collaboration with experienced, international engineering teams Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: B2B role for a Senior/Regular Full Stack Engineer to build and migrate end-to-end web applications in a banking environment using modern Java and React stack with Google Cloud. The position involves developing, testing and deploying applications, migrating BI reporting solutions to cloud, and working in an international team with strong focus on best practices and security. 🗂️ Requirements: Experience building large-scale web applications, Strong Java 17+ knowledge, Experience with Spring or Spring Boot, Experience designing and developing REST APIs, Strong React experience, Good knowledge of JavaScript and TypeScript, Experience with Google Cloud Platform, Experience with relational databases, Experience with data warehouses, Knowledge of Git, Experience with CI/CD pipelines 📃 Skills: Java, Spring, SpringBoot, REST, React, JavaScript, TypeScript, GCP, PostgreSQL, BigQuery, AlloyDB, Git, GitHub, Jenkins, CI/CD, ApacheECharts 🏢 Description: Senior Full Stack Engineer - Java/ React Hybryda 2 dni/ tydzień biuro Klienta - Kraków Współpraca B2B Dla naszego klienta z branży bankowej - globalnej organizacji o ogromnej skali działania - szukamy Senior oraz Regular Fullstack Engineerów , którzy chcą pracować przy nowoczesnych rozwiązaniach technologicznych i systemach wykorzystywanych przez miliony klientów na świecie. Jeśli szukasz projektu, w którym masz realny wpływ, pracujesz z nowoczesnym stackiem i rozwijasz się w międzynarodowym środowisku - czytaj dalej. Czym będziesz się zajmować? Tworzeniem aplikacji webowych end-to-end (projekt, development, testy, wdrożenie) Pracą w międzynarodowym zespole, ale też samodzielnym prowadzeniem tematów Migracją obecnych rozwiązań raportowych z narzędzi BI do środowiska chmurowego Wspieraniem zespołu w zmianie stacku technologicznego i dzieleniem się wiedzą Pracą zgodnie z dobrymi praktykami programistycznymi, standardami bezpieczeństwa i wymaganiami biznesowymi Kogo szukamy? Osób z doświadczeniem w budowie większych aplikacji webowych, które dobrze czują się w roli Fullstack Developera . Ważne technologie i umiejętności: Java (najlepiej 17+) + Spring / Spring Boot REST API React, JavaScript, TypeScript Google Cloud Platform - warunek konieczny Bazy danych i hurtownie danych (np. PostgreSQL, BigQuery, AlloyDB) Git (np. GitHub) CI/CD (np. Jenkins) Dodatkowy atut: doświadczenie w wizualizacji danych (np. Apache ECharts). Co zyskasz dzięki aplikacji na ofertę Antal? Gdy Twoja aplikacja zostanie rozpatrzona pozytywnie (zostaniesz zaproszony/a do procesu), otrzymasz wsparcie Konsultanta/Konsultantki, który/a utrzyma z Tobą stały kontakt (mailowo lub telefonicznie), pomoże Ci przygotować się do rozmowy rekrutacyjnej z przyszłym pracodawcą oraz zatroszczy się o jakość procesu rekrutacyjnego, w którym aktualnie bierzesz udział. Kim jesteśmy? Jesteśmy liderem rekrutacji specjalistów i menedżerów oraz doradztwa w obszarze HR. Marka obecna jest w 35 krajach, w Polsce działa od 1996 roku. Przez ten czas zbudowaliśmy wiele karier kandydatów, dzięki elastycznemu i kompleksowemu podejściu do wszystkich rekrutacji. Antal tworzy ponad 130 profesjonalnych konsultantów ds. rekrutacji, którzy są oni nie tylko skutecznymi rekruterami, ale także wykwalifikowanymi doradcami, specjalizującymi się zarówno w zakresie wybranego sektora, jak i stanowiska. Sprawdź inne aktualne oferty pracy na: https://antal.pl/dla-kandydata Zaobserwuj nasz profil na LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Full Stack Engineer focused primarily on backend development in Node.js to build and maintain a scalable API layer. The role involves developing RESTful services, supporting React frontend integration, and contributing to IoT system architecture. Work includes ensuring high code quality, testing, and collaboration on modern distributed solutions. 🗂️ Requirements: Very good knowledge of Node.js, Very good knowledge of TypeScript, Commercial experience with React, Very good knowledge of JavaScript (ES6+), Experience designing and working with RESTful APIs 📃 Skills: Node.js, TypeScript, JavaScript, React, REST, NestJS, ExpressJS, PostgreSQL, MongoDB, Docker, Git, Redis, RabbitMQ, WebSockets, Jest, Mocha, Pactum, AWS, GCP, Azure, Linux 🏢 Description: We are looking for a Senior Full Stack Engineer – Backend (Node.js) Oriented to join a project focused on building an API layer. You will join a team developing modern, scalable services. Full Stack Engineer – Backend (Node.js) Oriented Type of cooperation: contracting via Antal Work mode: remote work Rate: PLN 150–160/h Responsibilities: Developing and maintaining backend applications using Node.js and TypeScript Co-developing and integrating frontend applications in React Designing and developing RESTful APIs used by web and mobile applications Collaborating on the design of IoT system architecture Maintaining high code quality and writing tests Key requirements: Very good knowledge of Node.js and TypeScript (must-have) Commercial experience working with React Very good knowledge of JavaScript (ES6+) Experience in designing and working with RESTful APIs Very good command of English (must-have) Additional requirements: Knowledge of backend frameworks (NestJS, ExpressJS, or similar) Experience with PostgreSQL and MongoDB databases Practical knowledge of Docker Advanced knowledge of Git Experience with Redis and RabbitMQ Knowledge of WebSockets Experience with testing tools (Jest, Mocha, Pactum, or similar) Knowledge of cloud platforms (AWS, GCP, or Azure) Knowledge of Linux systems Co zyskasz dzięki aplikacji na ofertę Antal? Gdy Twoja aplikacja zostanie rozpatrzona pozytywnie (zostaniesz zaproszony/a do procesu), otrzymasz wsparcie Konsultanta/Konsultantki, który/a utrzyma z Tobą stały kontakt (mailowo lub telefonicznie), pomoże Ci przygotować się do rozmowy rekrutacyjnej z przyszłym pracodawcą oraz zatroszczy się o jakość procesu rekrutacyjnego, w którym aktualnie bierzesz udział. Kim jesteśmy? Jesteśmy liderem rekrutacji specjalistów i menedżerów oraz doradztwa w obszarze HR. Marka obecna jest w 35 krajach, w Polsce działa od 1996 roku. Przez ten czas zbudowaliśmy wiele karier kandydatów, dzięki elastycznemu i kompleksowemu podejściu do wszystkich rekrutacji. Antal tworzy ponad 130 profesjonalnych konsultantów ds. rekrutacji, którzy są oni nie tylko skutecznymi rekruterami, ale także wykwalifikowanymi doradcami, specjalizującymi się zarówno w zakresie wybranego sektora, jak i stanowiska. Sprawdź inne aktualne oferty pracy na: https://antal.pl/dla-kandydata Zaobserwuj nasz profil na LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Opportunity for a Senior Full Stack Engineer to design and develop scalable .NET and React-based applications supporting DevOps analytics products. The role involves leading UI enhancements, contributing to architecture decisions, and building secure backend services within a CI/CD-driven environment. Position requires hybrid work with regular presence in the Kraków office. 🗂️ Requirements: Minimum 7 years experience in .NET development, Strong experience with C# and Web API, Hands-on experience with React, Experience building scalable and secure backend services, Strong SQL Server and advanced T-SQL skills, Experience with CI/CD and DevOps practices, Understanding of SDLC, Knowledge of HTML5 and CSS, Experience in responsive UI development 📃 Skills: .NET, C#, WebAPI, React, SQL, T-SQL, SQLServer, CI/CD, DevOps, HTML5, CSS, SDLC 🏢 Description: Senior Full Stack Engineer (.NET + React) B2B | 6 days per month from Kraków office We have a unique opportunity for you to join  team, which delivers metrics and analytical products that drive DevOps transformation across the bank. We provide key performance measures for engineering teams worldwide, along with critical insights that leadership relies on to shape and execute strategic initiatives. As we continue to evolve, we are looking for a Senior Full Stack Engineer (.NET + React) to join us in the next stage of our journey. 🚀 Responsibilities Participate in software architecture design Lead UI changes and improvements to enhance UX and application stability Implement solutions following best design patterns Analyze requirements to fully understand solutions and recommend improvements Create clear and comprehensive technical documentation Develop prototypes to validate concepts and designs Manage changes across the Service Management lifecycle Actively contribute to automation and continuous improvement of Service Management processes Provide high-quality customer support by resolving issues promptly Communicate effectively with stakeholders to understand needs and deliver solutions 🛠 Requirements Minimum 7 years of professional experience in .NET application development, including frontend (preferably React) Strong expertise in C# and Web API development Proven ability to build scalable, secure, and efficient backend services Hands-on experience with React , building dynamic and high-performance web applications Strong database design skills and experience with SQL Server (advanced T-SQL, optimization, performance tuning) Experience with DevOps practices (CI/CD) Solid understanding of the Software Development Life Cycle (SDLC) Good knowledge of HTML5, CSS , and responsive UI development Excellent problem-solving skills and attention to detail 🌍 What we offer Opportunity to influence DevOps transformation in a global organization Work with large-scale data and analytics solutions Collaboration with international teams Ability to shape architecture and engineering standards Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Senior Full Stack Engineer role focused on building and evolving analytics and metrics platforms supporting DevOps transformation. The position involves designing architecture, developing scalable backend services in .NET, and delivering high-performance React-based UIs. The engineer will contribute to CI/CD practices, service management improvements, and technical documentation in a global environment. 🗂️ Requirements: Minimum 7 years of experience in .NET development, Strong expertise in C#, Experience with Web API development, Hands-on experience with React, Ability to build scalable and secure backend services, Strong SQL Server and database design skills, Advanced T-SQL knowledge, Experience with CI/CD practices, Understanding of SDLC, Knowledge of HTML5 and CSS, Experience with responsive UI development 📃 Skills: .NET, C#, WebAPI, React, SQL, SQLServer, T-SQL, CI/CD, HTML5, CSS, SDLC, DevOps 🏢 Description: Senior Full Stack Engineer (.NET + React) B2B | 6 days per month from Kraków office We have a unique opportunity for you to join  team, which delivers metrics and analytical products that drive DevOps transformation across the bank. We provide key performance measures for engineering teams worldwide, along with critical insights that leadership relies on to shape and execute strategic initiatives. As we continue to evolve, we are looking for a Senior Full Stack Engineer (.NET + React) to join us in the next stage of our journey. 🚀 Responsibilities Participate in software architecture design Lead UI changes and improvements to enhance UX and application stability Implement solutions following best design patterns Analyze requirements to fully understand solutions and recommend improvements Create clear and comprehensive technical documentation Develop prototypes to validate concepts and designs Manage changes across the Service Management lifecycle Actively contribute to automation and continuous improvement of Service Management processes Provide high-quality customer support by resolving issues promptly Communicate effectively with stakeholders to understand needs and deliver solutions 🛠 Requirements Minimum 7 years of professional experience in .NET application development, including frontend (preferably React) Strong expertise in C# and Web API development Proven ability to build scalable, secure, and efficient backend services Hands-on experience with React , building dynamic and high-performance web applications Strong database design skills and experience with SQL Server (advanced T-SQL, optimization, performance tuning) Experience with DevOps practices (CI/CD) Solid understanding of the Software Development Life Cycle (SDLC) Good knowledge of HTML5, CSS , and responsive UI development Excellent problem-solving skills and attention to detail 🌍 What we offer Opportunity to influence DevOps transformation in a global organization Work with large-scale data and analytics solutions Collaboration with international teams Ability to shape architecture and engineering standards Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Senior Full Stack Engineer role focused on building and scaling a global cloud-based platform using Node.js and TypeScript. The position involves designing scalable microservices, event-driven systems, and modern React/Next.js applications handling large volumes of real-time data. The engineer will contribute to architecture, API design, and system reliability across distributed systems. 🗂️ Requirements: 5+ years of software engineering experience, Strong expertise in Node.js, Strong expertise in TypeScript, Experience with event-driven architectures, Advanced knowledge of asynchronous programming, Experience designing and maintaining complex APIs, Strong experience with React and Next.js, Hands-on experience with automated testing frameworks, Experience with SQL and/or NoSQL databases, Familiarity with Elasticsearch or OpenSearch 📃 Skills: Node.js, TypeScript, React, Next.js, Kafka, RabbitMQ, SQL, NoSQL, Elasticsearch, OpenSearch, Jest, Vitest, Playwright, Microservices, APIs, EventDriven, Asynchronous, Testing, Architecture 🏢 Description: Senior Full Stack Engineer (Node.js & TypeScript) About the Role We are looking for a Senior Full Stack Engineer to join a team building and scaling a global cloud-based platform. In this role, you will work on both backend services and modern web applications, helping to design highly scalable systems that process large volumes of real-time data while delivering seamless user experiences. Responsibilities System Architecture Design and develop scalable microservices using Node.js and TypeScript. Ensure high availability, reliability, and low latency across distributed systems. Contribute to architectural decisions and long-term platform scalability. Backend Development & Event-Driven Systems Build and optimize event-driven and asynchronous workflows. Work with messaging technologies such as Kafka or RabbitMQ. Design solutions capable of handling large-scale real-time data processing. API Design Own the design and evolution of APIs. Create high-performance, type-safe interfaces connecting multiple services and applications. Promote best practices around API versioning and contract-driven development. Frontend Development Develop modern web applications using React and Next.js. Focus on performance, maintainability, and excellent user experience. Implement efficient state management solutions and responsive interfaces. Quality & Reliability Design and maintain comprehensive testing strategies, including Unit, Integration, and End-to-End testing. Work with tools such as Jest, Vitest, and Playwright. Contribute to a culture focused on code quality and system reliability. Requirements 5+ years of experience in software engineering. Strong expertise in Node.js and TypeScript. Experience designing and implementing event-driven architectures. Advanced knowledge of asynchronous programming patterns. Proven experience designing and maintaining complex APIs. Strong frontend development skills with React and Next.js. Hands-on experience with automated testing frameworks. Experience with SQL and/or NoSQL databases. Familiarity with search technologies such as Elasticsearch or OpenSearch. Professional-level English communication skills. Ability to collaborate across teams and support technical decision-making. Nice to Have Interest or experience in AI-related projects. Knowledge of vector databases. Experience building services in Python. What’s Offered Opportunity to work on large-scale, modern cloud solutions. Influence on architecture and technical direction. Collaborative engineering culture with knowledge-sharing initiatives. Stable employment in an international environment. Flexible working hours and hybrid work model. Comprehensive benefits package, including private healthcare, sports card, insurance options, and additional employee perks. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Full Stack Engineer role focused on designing, developing, and maintaining secure microservices-based solutions in a FinTech environment, using Python and modern frontend technologies. The position involves building data pipelines, deploying containerized services through CI/CD, and ensuring system reliability and security in a regulated setting. Hybrid work model with strong emphasis on DevSecOps and automation. 🗂️ Requirements: Extensive experience in Python web development (FastAPI, Flask or Django), Experience building data pipelines in Python (Pandas, Numpy, Airflow or Luigi), Strong knowledge of microservices architecture and CQRS, SAGA, event sourcing, Experience with Docker and Kubernetes, Experience with CI/CD tools (Jenkins or GitLab), Strong Linux system administration skills, Understanding of networking concepts (TCP/IP, DNS, Firewalls, Subnetting), Proficiency with Git and branching strategies, Frontend development experience (HTML, CSS, JavaScript), Strong SQL skills with complex queries, Experience writing automated tests (unit, integration, functional), Experience working in Agile and DevSecOps environments 📃 Skills: Python, FastAPI, Flask, Django, Pandas, Numpy, Airflow, Luigi, Docker, Kubernetes, Jenkins, GitLab, Linux, TCP/IP, DNS, Git, HTML, CSS, JavaScript, SQL, React, Kafka, RabbitMQ, Terraform, AWS, GCP, Azure, Prometheus, MongoDB, PostgreSQL, MSSQL 🏢 Description: FullStack Engineer (Python, JavaScript, React) Location: Kraków (hybrid model – 2 days per week from the office) Industry: FinTech Contract type: B2B About the Role As a Full Stack Engineer, your responsibilities will include the following: Working with and support your pod’s Product Owner and Development Lead in designing, developing and delivering software solutions that meet stakeholder requirements. Working with Cybersecurity experts in understanding and refining requirements, delivering on features iteratively, whilst also proposing new technologies and solutions to help keep the bank secure. Adhering to the team’s design and development patterns, and in collaboration with the development lead actively identifing bottlenecks and to improve software development efficiencies. Adhering to the team’s governance procedures surrounding requirements intake, release and incident management, and actively contributing towards further streamlining processes (through automation). Ensuring the operability of existing services, including L2/L3 troubleshooting, bug fixing, and writing automated test cases and any further technical documentation needed to support delivered code. Undertaking peer reviews and leading by example for junior developers in the team. Requirements Able to demonstrate extensive Python web development experience, using frameworks such as FastAPI (being the preference), Flask and/or Django. Experience developing data pipelines, primarily in Python, using libraries such as Pandas, Numpy, and tools such as Airflow, Luigi, etc. A strong understanding of microservice architectures and be knowledgeable on the implementation of concepts such as CQRS, SAGA and event sourcing. Experience building and deploying services to containers, using tools such as Docker and Kubernetes. Experience building and deploying services through CICD pipelines, with hands-on experience using tools such as Jenkins, Gitlab, etc. Strong sysadmin skills in Linux, coupled with a solid understanding of computer systems and networks in general, e.g. TCP/IP, DNS, Firewalls, Subnetting, etc. Proficient with Git and a working familiarity of several branching strategies such as GitFlow, Trunk based, etc. Good understanding and reasonable experience in frontend development, at a minimum using languages such as HTML, CSS, JavaScript. Strong SQL programming skills and be able to construct complex queries. Demonstrate a test-driven mindset, backed by experience developing automated tests cases, be it unit, integration, functional and non-functional tests. Good knowledge of agile and DevSecOps delivery processes within the context of working in a highly regulated environment and be comfortable using tools such as Jira and Confluence. Articulate, with very good verbal and written communication skills. This is essential as you’ll be part of a global team consisting of engineers and non-engineers alike. Able to demonstrate an ability to work and lead in a fast paced, team focused environment with a proven track record of delivering and completing assigned tasks as an individual, and as a team. Demonstrate a willingness to continuously learn and share learnings with others. Our architecture is constantly evolving in line with new technologies being introduced as well as emerging threats. Nice to Have Cybersecurity related experience would be highly advantageous, be it working with automated application security testing tools (e.g. SAST, DAST), performing Penetration Tests, Fuzz testing and/or any threat detection and exploitation techniques. Strong experience building, deploying and operating infrastructure to a major cloud platform, such as AWS, GCP, Azure and/or Ali, using tools such as Terraform to provision and manage infrastructure as code, operational monitoring tools such as Prometheus, and service mesh tools such as Anthos. Strong frontend development experience, preferably in a JavaScript based language/framework such as React. In addition, experience developing and/or integrating with customer analytics products such as Matomo, and any further design and/or UX experience would be highly advantageous. Strong database administration / architecture experience, working with several relational database systems such as MSSQL, Postgres, as well as non-relational such as Mongo. Coupled to this, you will also have experience managing databases in a loosely coupled environment, with very strong performance and tuning skills. Experience working with Message Queue systems, such as Kafka, Rabbit, etc. What’s Offered Hybrid work model with flexibility Private medical care Multisport card Flexible working hours Opportunity to build a high-impact platform used across a global organization Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Full Stack Developer role in an international agile team delivering digital solutions for used assets remarketing. The position involves designing, developing, and maintaining scalable and secure backend and frontend applications while contributing to technical decisions and code quality. The role also includes collaboration in a cross-functional environment and mentoring junior developers. 🗂️ Requirements: 5+ years of full stack development experience, Proficiency in Java, JavaScript, and Python, Experience with Spring Boot and Angular, Hands-on experience with REST and SOAP APIs, Experience with Oracle and MongoDB databases, Knowledge of messaging systems such as Kafka or ActiveMQ, Experience with CI/CD tools and build automation, Proficiency with Docker and Kubernetes, Experience working in Agile environments, Fluent English 📃 Skills: Java, JavaScript, Python, SpringBoot, Angular, Oracle, MongoDB, Elasticsearch, SOLR, REST, SOAP, Kafka, ActiveMQ, Maven, Jenkins, GitLabCI, Git, Docker, Kubernetes, Tomcat, Nginx, IntelliJ, Eclipse, VSCode, Jira, Confluence 🏢 Description: Senior Full Stack Developer Location: Warsaw (hybrid 50/50) Experience: 5+ years Language: English (required) Role Overview We are looking for a Senior Full Stack Developer to join an international agile team delivering digital solutions supporting used assets remarketing. The role involves designing, developing, and maintaining scalable and secure applications, working closely with product owners, designers, and other engineers in a cross-functional setup. You will contribute to both backend and frontend development, participate in technical decision-making, review code, and support continuous improvement of existing systems. Responsibilities Design and develop backend services and APIs Build and maintain frontend applications Improve and refactor existing solutions Participate in code reviews and agile ceremonies Collaborate with cross-functional teams Support technical documentation and application maintenance Mentor junior developers when needed Required Tech Stack Languages: Java, JavaScript, Python Frameworks: Spring Boot, Angular Databases: Oracle, MongoDB, Elasticsearch / SOLR APIs: REST, SOAP Messaging: Kafka, ActiveMQ CI/CD & Build: Maven, Jenkins, GitLab CI Version Control: Git Containers & Cloud: Docker, Kubernetes Servers & Tools: Tomcat, Nginx IDEs: IntelliJ IDEA, Eclipse, VS Code Agile & DevOps tools: Jira, Confluence Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.