Full Stack Developer (Java / Python) HSBCJP00056682

🏢 Summary: Full-time contract role for an experienced FullStack Developer to build and maintain scalable, AI-driven financial applications in a global Agile team. The position covers the full software development lifecycle, including design, development, testing, deployment, and production support in a "you build it, you support it" model. Work is hybrid-based in Kraków with strong ownership and continuous delivery practices. 🗂️ Requirements: Minimum 5 years of professional software development experience, Strong knowledge of Java, Strong knowledge of Python, Hands-on experience with Spring Framework, Understanding of SOLID principles, Understanding of Clean Code principles, Understanding of DDD, Understanding of BDD, Experience with SQL databases, Experience with NoSQL databases, Familiarity with microservices architecture, Experience with event-driven systems or streaming technologies, English proficiency (written and spoken) 📃 Skills: Java, Python, Spring, SQL, NoSQL, PostgreSQL, MongoDB, Microservices, Streaming, SOLID, DDD, BDD, CleanCode, JavaScript, Vue.js, AI, MachineLearning, NLP, DataScience, LangChain, LangGraph 🏢 Description: FullStack Developer 📍 Kraków, Poland (hybrid – min. 2 days/week in the office) 🕒 Full-time | Contract role About the Role We are looking for an experienced FullStack Developer to join a global technology team delivering innovative digital solutions in the financial domain. In this role, you will work closely with a Development Manager and a small, cross-functional team to build and maintain scalable applications. You will be involved in the entire software development lifecycle – from analysis and design to deployment and production support. This is a hands-on role in a collaborative environment where teams take full ownership: “you build it, you support it.” Your Responsibilities Work in a small Agile team (4–6 people) with a dedicated Product Owner Translate business requirements into user stories and deliver them iteratively to production Design and implement high-quality, scalable solutions aligned with technical standards Participate in all stages of the development lifecycle, including testing and production support Identify and manage technical debt, balancing it with new feature development Collaborate closely with team members through pairing and knowledge sharing Contribute to a culture of continuous improvement and experimentation Required Skills & Experience Minimum 5 years of professional software development experience Strong knowledge of Java and Python Hands-on experience with Spring Framework Solid understanding of software engineering principles ( SOLID, Clean Code, DDD, BDD ) Experience with SQL and NoSQL databases (e.g., PostgreSQL, MongoDB) Familiarity with microservices architecture Experience with event-driven systems / streaming technologies Strong communication skills in English (written and spoken) Ability to collaborate, mentor, and support other engineers Nice to Have Experience with JavaScript (Vue.js) Background in AI / Machine Learning / NLP / Data Science Knowledge of: Prompt Engineering LangChain / LangGraph Clean Architecture What You Can Expect Work in a globally distributed engineering organization Small, self-organizing teams with strong ownership Continuous delivery approach (no traditional sprints – focus on flow and frequent releases) Opportunity to work on cutting-edge AI-driven solutions Exposure to modern technologies and experimentation with new tools A collaborative culture where learning, pairing, and knowledge sharing are encouraged Benefits: Multisport Card and Luxmed Who We’re Looking For We value engineers who: Are curious, adaptable, and open to experimentation Enjoy solving complex problems with technology Take ownership and responsibility for their work Are comfortable stepping outside their specialization when needed See failure as a learning opportunity 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 Software Engineer role focused on designing, building, and supporting scalable applications in the financial domain within a small Agile team. The position covers the full software development lifecycle, including analysis, design, implementation, testing, deployment, and production support. It emphasizes microservices and event-driven architecture with strong engineering standards and ownership. 🗂️ Requirements: Minimum 5 years of professional software development experience, Strong knowledge of Java, Strong knowledge of Python, Hands-on experience with Spring Framework, Understanding of SOLID principles, Knowledge of Clean Code practices, Experience with DDD and BDD, Experience with SQL and NoSQL databases, Experience with PostgreSQL, Experience with MongoDB, Familiarity with microservices architecture, Experience with event-driven or streaming systems 📃 Skills: Java, Python, Spring, SQL, NoSQL, PostgreSQL, MongoDB, Microservices, EventDriven, SOLID, CleanCode, DDD, BDD 🏢 Description: Senior Software Engineer 📍 Kraków, Poland (hybrid – min. 2 days/week in the office) 🕒 Full-time | B2B 190-230PLN netto/h About the Role We are looking for an experienced Senior Software Engineer to join a global technology team delivering innovative digital solutions in the financial domain. In this role, you will work closely with a Development Manager and a small, cross-functional team to build and maintain scalable applications. You will be involved in the entire software development lifecycle – from analysis and design to deployment and production support. This is a hands-on role in a collaborative environment where teams take full ownership: “you build it, you support it.” Your Responsibilities Work in a small Agile team (4–6 people) with a dedicated Product Owner Translate business requirements into user stories and deliver them iteratively to production Design and implement high-quality, scalable solutions aligned with technical standards Participate in all stages of the development lifecycle, including testing and production support Identify and manage technical debt, balancing it with new feature development Collaborate closely with team members through pairing and knowledge sharing Contribute to a culture of continuous improvement and experimentation Required Skills & Experience Minimum 5 years of professional software development experience Strong knowledge of Java and Python Hands-on experience with Spring Framework Solid understanding of software engineering principles ( SOLID, Clean Code, DDD, BDD ) Experience with SQL and NoSQL databases (e.g., PostgreSQL, MongoDB) Familiarity with microservices architecture Experience with event-driven systems / streaming technologies Strong communication skills in English (written and spoken) Ability to collaborate, mentor, and support other engineers Nice to Have Experience with JavaScript (Vue.js) Background in AI / Machine Learning / NLP / Data Science Knowledge of: Prompt Engineering LangChain / LangGraph Clean Architecture What You Can Expect Work in a globally distributed engineering organization Small, self-organizing teams with strong ownership Continuous delivery approach (no traditional sprints – focus on flow and frequent releases) Opportunity to work on cutting-edge AI-driven solutions Exposure to modern technologies and experimentation with new tools A collaborative culture where learning, pairing, and knowledge sharing are encouraged Benefits: Multisport Card and Luxmed Who We’re Looking For We value engineers who: Are curious, adaptable, and open to experimentation Enjoy solving complex problems with technology Take ownership and responsibility for their work Are comfortable stepping outside their specialization when needed See failure as a learning opportunity 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: Full Stack Developer role (Java/React) in a banking environment, focused on building and maintaining web applications supporting financial and FX products. The position involves end-to-end development in Agile/DevOps setup with strong ownership of production systems. Work is delivered in small, cross-functional teams with frequent deployments and close collaboration with business. 🗂️ Requirements: Very good knowledge of React, Very good knowledge of Java, Very good knowledge of HTML, Experience in Agile environment, Experience in DevOps practices and CI/CD, Strong software engineering fundamentals, Ability to design and solve complex technical problems, Very good English (written and spoken) 📃 Skills: Java, React, HTML, CI/CD, Agile, DevOps, PostgreSQL, Linux, Kotlin, Clojure, Python, Rust, Haskell 🏢 Description: Full Stack Developer (Java / React) Forma współpracy: B2B Stawka: 170–220 PLN/h Wymiar pracy: Full time Tryb pracy: Hybrydowy – 2 dni w tygodniu z biura Lokalizacja: Kraków O projekcie Dołączysz do zespołu Digital Technology , który wspiera globalną dywizję CIB w jednej z wiodących instytucji finansowych. Zespół działa jak firma technologiczna wewnątrz banku – stawiamy na szybkie dostarczanie wartości, wysoką jakość, odporność systemów oraz nowoczesne podejście DevOps i Agile. Pracujemy end-to-end: od analizy i developmentu, przez testy, aż po wsparcie produkcyjne. Nie mamy silosów – każdy członek zespołu realnie wpływa na produkt. Zakres obowiązków Projektowanie, rozwój i utrzymanie aplikacji webowych w oparciu o React, Java i HTML Współpraca z Product Ownerami i innymi inżynierami przy zbieraniu wymagań i dostarczaniu rozwiązań wysokiej jakości Implementacja funkcjonalności wspierających produkty bankowe i FX Udział w praktykach Agile i procesach DevOps (CI/CD) Rozwiązywanie złożonych problemów technicznych z wykorzystaniem podejścia inżynierskiego Wsparcie systemów produkcyjnych („you build it, you run it”) Aktywny udział w planowaniu prac, code review i dyskusjach technicznych Komunikacja w języku angielskim (pisemna i ustna) Wymagane umiejętności Bardzo dobra znajomość React, Java i HTML Solidne podstawy inżynierii oprogramowania Doświadczenie w środowisku Agile / DevOps Gotowość do nauki nowych języków i technologii Analityczne podejście do projektowania i rozwiązywania problemów Samodzielność i odpowiedzialność za powierzony zakres Bardzo dobra znajomość języka angielskiego Umiejętność pracy zespołowej i dobre zdolności komunikacyjne Mile widziane Doświadczenie w systemach finansowych lub tradingowych Znajomość FX / bankowości inwestycyjnej Doświadczenie z architekturą mikroserwisową PostgreSQL, Linux Znajomość innych języków (np. Kotlin, Clojure, Python, Rust, Haskell) Jak pracujemy Małe zespoły (4–6 osób), bliska współpraca z biznesem Brak klasycznych sprintów – stawiamy na ciągły przepływ zmian Setki wdrożeń dziennie, szybkie trafianie na produkcję Elastyczne podejście, eksperymentowanie i kultura „learning by doing” Możliwość rotacji między projektami i zespołami Proces rekrutacyjny (1 etap) 30 min – rozmowa o projekcie i sposobie pracy + przedstawienie doświadczenia kandydata 90 min – rozmowa techniczna z LIVE codingiem (własne IDE) 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: 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: B2B Full Stack Engineer role in FinTech focused on building and maintaining secure microservices-based applications using Python and JavaScript in a hybrid model. The position involves developing web services and data pipelines, deploying containerized applications via CI/CD, and ensuring operability through testing and troubleshooting. You will collaborate in an agile, security-driven environment to deliver scalable and compliant software solutions. 🗂️ Requirements: Extensive experience in Python web development with FastAPI, Flask or Django, Experience building data pipelines in Python using Pandas, Numpy and workflow tools, Strong knowledge of microservices architecture and CQRS, SAGA, event sourcing, Experience with containerization using Docker and Kubernetes, Hands-on experience with CI/CD tools such as Jenkins or GitLab, Strong Linux system administration skills, Understanding of TCP/IP, DNS, Firewalls and networking fundamentals, Proficiency with Git and branching strategies, Frontend development experience with HTML, CSS and JavaScript, Strong SQL skills with ability to write complex queries, Experience writing automated unit, integration and functional tests, Experience working in Agile and DevSecOps environments using Jira and Confluence 📃 Skills: Python, FastAPI, Flask, Django, JavaScript, HTML, CSS, React, Pandas, Numpy, Airflow, Luigi, Docker, Kubernetes, Jenkins, GitLab, Linux, Git, SQL, TCP/IP, DNS, Jira, Confluence 🏢 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 anddelivering software solutions that meet stakeholder requirements. Working with Cybersecurity experts in understanding and refining requirements, delivering on featuresiteratively, 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 leadactively identifing bottlenecks and to improve software development efficiencies. Adhering to the team’s governance procedures surrounding requirements intake, release and incidentmanagement, and actively contributing towards further streamlining processes (through automation). Ensuring the operability of existing services, including L2/L3 troubleshooting, bug fixing, and writingautomated 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. 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 threatdetection 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.

🏢 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: B2B contract role for a Senior Java Developer to design and build high‑performance, low‑latency backend services for trading and risk systems within an international Agile team. The position focuses on developing microservices, REST APIs and distributed components supporting critical transaction workflows. You will influence architecture and engineering standards while optimizing scalability, stability and performance. 🗂️ Requirements: 5+ years Java backend development experience (Java 11+), Strong knowledge of REST and HTTPS, Experience with microservices architecture, Experience with messaging systems (MQ), Experience with SQL, Experience with Postgres, Sybase or similar database, Experience leading delivery of Java-based modules or services, Experience working in Agile environment, Fluent English 📃 Skills: Java, REST, HTTPS, Microservices, MQ, SQL, Postgres, Sybase, CI/CD, Agile 🏢 Description: Senior Java Developer 📍 Location: Kraków, Poland (hybrid: 2 days in the office, 3 days remote) 📄 B2B Contract: 190 – 230 PLN / hour We are looking for a proactive Senior Java Developer to join an international Agile team building high‑performance backend solutions for trading and risk‑related systems. You will work closely with engineers and analysts to design, develop and optimize services supporting critical business processes. This role offers the opportunity to work on low‑latency, high‑throughput applications and influence architecture, engineering standards and delivery quality across a complex technology landscape. Key Responsibilities: Design and develop backend services and microservices in Java. Build and maintain RESTful APIs and distributed system components. Develop high‑availability, high‑performance solutions supporting trading workflows. Integrate with internal platforms and support end‑to‑end transaction lifecycle. Optimize system performance, stability and scalability. Collaborate with global engineering and business teams. Participate in Agile ceremonies: sprint planning, reviews, retrospectives and daily stand‑ups. Requirements: 5+ years of experience in Java backend development (Java 11+). Strong knowledge of REST, HTTPS, microservices and messaging (MQ). Experience with SQL and at least one mainstream database (Postgres, Sybase or similar). Experience owning or leading delivery of Java‑based modules or services. Strong analytical and problem‑solving skills. Very good communication skills in English. Ability to work in a dynamic environment and handle pressure. Curiosity, proactiveness and continuous learning mindset. Nice to Have: Experience in production environments. Experience with Agile development and CI/CD. Domain knowledge in financial systems: trade lifecycle, post‑trade, FX. What We Offer: Long‑term cooperation within an international engineering environment. Real influence on architecture, engineering standards and delivery quality. Work in a multicultural, distributed setup. Private medical care (LuxMed) and Multisport card. Hybrid model: 2 days per week in the Kraków office. 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 Java Full Stack Developer role focused on developing and supporting a global platform within a distributed engineering environment. The position combines backend and frontend development with DevOps and production support responsibilities. It involves ownership of application enhancements, incident resolution, and end‑to‑end service stability. 🗂️ Requirements: Strong experience with Java 21, Strong experience with Spring Boot 3.x, Experience with microservices architecture, Experience with REST APIs and JSON, Frontend development experience with React JS, Knowledge of PostgreSQL, Experience with messaging systems (MQ or Solace), Working knowledge of Kubernetes, Working knowledge of Redis, Understanding of application security principles, Experience with observability tools, Experience with DevOps tools, Ability to work in DevOps model across development and support, Experience in production support and incident resolution 📃 Skills: Java, Spring, Microservices, REST, JSON, React, PostgreSQL, MQ, Solace, Kubernetes, Redis, Grafana, Splunk, Logstash, Prometheus, OpenTelemetry, Zipkin, Jenkins, Ansible 🏢 Description: Senior Java Full Stack Developer 📍 Location: Kraków, Poland (hybrid: 2 days in the office , 3 days remote) 📄 B2B Contract: 190 – 230 PLN / hour We are looking for a Senior Java Full Stack Developer to join the Global HMS engineering team within Markets & Securities Services IT. In this role, you will contribute to the development and support of a key global platform, working closely with business stakeholders and distributed engineering teams. You will take ownership of application enhancements, production stability, and end‑to‑end support activities, ensuring high service quality and timely delivery. This position is ideal for someone who enjoys combining hands‑on development with operational responsibility, thrives in a global environment, and is comfortable working across backend, frontend, DevOps, and support streams. Key Responsibilities: Deliver application enhancements and provide day‑to‑day support within a global engineering setup. Collaborate with business stakeholders to plan and execute deliveries, ensuring milestones are met. Lead and resolve critical production incidents, driving fixes through to completion. Own end‑to‑end production support: handling tickets, queries, and operational requests. Diagnose and resolve application issues to maintain performance, reliability, and usability. Create and maintain technical documentation, best‑practice guidelines, and process artefacts. Act as an SME for service functionality, constraints, and operational considerations. Identify and escalate risks, issues, and dependencies during agile delivery. Continuously develop skills through training, certifications, and hands‑on learning. Requirements: Strong experience with Java 21 , Spring Boot 3.x , microservices , REST APIs , JSON . Frontend experience with React JS . Solid understanding of PostgreSQL and messaging technologies ( MQ/Solace ). Working knowledge of Kubernetes , Redis , and application security principles. Exposure to observability and DevOps tooling: Grafana , Splunk , Logstash , Prometheus , OpenTelemetry , Zipkin , Jenkins , Ansible . Strong communication skills and ability to collaborate across distributed teams. High responsiveness and ownership mindset, especially in production support contexts. Ability to produce clear, concise documentation and technical deliverables. Comfortable working in a DevOps model, contributing across analysis, testing, and support. Nice to Have: Basic Python , Activiti (workflow engine), JMock/Mockito , shell scripting. Experience with Selenium or Serenity . Background in workflow‑based applications. What We Offer: Long‑term cooperation in a global engineering environment. Real influence on service quality, operational stability, and delivery processes. Work in a multicultural, distributed team. Private medical care (LuxMed) and Multisport card. Hybrid model: 2 days per week in the Kraków office . 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 opportunity for a Kotlin/Java Developer to build and enhance an internal engineering platform for a large financial services organization. The role focuses on developing modern web applications and APIs within a microservices architecture in an Agile, CI/CD-driven environment. It involves backend development, selected UI work, and close collaboration with cross-functional teams. 🗂️ Requirements: Commercial experience with Kotlin or Java, Hands-on experience in at least two: API development, SQL/databases, HTML/JavaScript, Understanding of microservices architecture, Experience with Jira, Confluence, Bitbucket, Ability to work in Agile and CI/CD environment, English proficiency at B2+ level 📃 Skills: Kotlin, Java, SQL, HTML, JavaScript, Microservices, Jira, Confluence, Bitbucket, Jenkins, AWS, Azure, GCP, Linux, AIX, WAS, CI/CD 🏢 Description: 📍 Location: Kraków, Poland (hybrid - 6 days per month in the office)📄 B2B Contract: 180 - 230 PLN / hour We are looking for a Kotlin / Java Developer to join an international project delivered for a large organization within the financial services sector. The team is building an internal engineering platform that supports development teams in managing software development standards, quality controls and compliance across the organization. This role involves working on modern web applications and APIs built with Kotlin and Java, based on a microservices architecture. The scope of responsibilities will be adjusted to the candidate’s experience and technical profile. Key Responsibilities: Collaborate with developers, testers and business stakeholders to build and operate internal products. Design, develop and implement backend features and selected UI components according to backlog priorities. Build and maintain APIs and microservices that address real business and engineering challenges. Work closely with the wider engineering team to design and deliver new features. Proactively engage with internal users to resolve issues and respond to feature requests. Contribute within an Agile, CI/CD-driven environment enabling frequent and stable releases. Participate in code reviews and support quality through testing, including automated test scripts. Requirements: Commercial experience with Kotlin, or Java with a strong willingness to learn Kotlin. Hands-on experience in at least 2 of the following areas: API development, SQL / databases, HTML / JavaScript. Experience working with collaboration tools such as Jira, Confluence and Bitbucket. Solid understanding of microservices architecture. Strong analytical and troubleshooting skills. Good communication and collaboration skills. English proficiency at B2+ level. Nice to Have: Experience with Jenkins and CI/CD pipeline design. Knowledge of test automation practices. Familiarity with cloud platforms such as AWS, Azure or GCP. Background in system administration (Linux / AIX / WAS). What We Offer: Long-term cooperation on an enterprise-scale international project. Exposure to modern technologies and microservices-based architectures. Real influence on the development of internal engineering platforms. Access to internal trainings, workshops and technical knowledge-sharing sessions. 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: Fullstack Developer role focused on building and maintaining modern applications using Java 21 and Angular 16+ in a microservices architecture. The position involves developing new features and enhancing existing systems, including design, testing, and maintenance of RESTful APIs in a cloud-based environment. Hybrid work model with B2B contract. 🗂️ Requirements: Minimum 4 years of experience in a similar role, Proficiency in Java 21, Experience with Spring and Spring Boot, Experience with Angular 16+, Experience in RESTful API development, Experience with microservices architecture, Experience with Git version control, English proficiency at minimum B2 level 📃 Skills: Java, Spring, SpringBoot, Angular, REST, Microservices, Git, API 🏢 Description: Fullstack Developer (Java, Angular) Location: Hybrid/Wrocław (3 days per week in the office) Full-time Contract B2B We are currently seeking an experienced Fullstack Developer (Angular, Java) on behalf of our client. T he Software Developer will work within a Development team and may be involved in the development of new products and maintenance of existing products including the design, installation, testing and maintenance of software systems Required Qualifications: Minimum 4 years of experience in a similar position Strong proficiency in Java programming language ( 21 version) Extensive experience with Spring & Spring Boot framework Solid understanding of Angular for front-end development ( 16 version and higher) Proficient in RESTful API design and development. Microservices Experience with version control systems, preferably Git Fluency in English both written and verbal (minimum B2 level) What We Offer: Collaboration in an international environment Opportunity to work on large-scale, cloud-based, modern projects Full support and knowledge-sharing within an experienced team Opportunities to grow your technical skills and work on innovative initiatives Competitive B2B contract remuneration 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