Backend Data Engineer - Java/Scala

🏢 Summary: Backend Engineer role focused on building and modernising a global payments platform using Java and microservices architecture. The position involves developing reliable backend services and creating robust test automation frameworks to ensure high-quality, scalable payment processing. The role supports migration from legacy systems to API-driven, microservices-based solutions in an Agile/DevOps environment. 🗂️ Requirements: Strong experience with Java 11+, Hands-on experience in software testing and automation frameworks, Understanding of REST APIs, Knowledge of microservices architecture, Experience with Git, Experience with Unix/Linux environments, Experience with SQL databases, Experience with Spring and Spring Boot 📃 Skills: Java, Spring, SpringBoot, SQL, Oracle, Git, Unix, Linux, REST, Microservices, Automation, Testing 🏢 Description: Build the platform that moves money around the world We’re looking for a Backend Engineer with strong Java and test automation experience to join the team behind a global payments platform that enables businesses and customers to move money quickly, securely, and globally . The platform powers international payments that help organisations pay suppliers, process salaries, transfer funds, and pay taxes directly to authorities through multiple channels. You’ll play a key role in modernising payment systems , building high-quality microservices , and developing automation frameworks that ensure reliability at scale . As part of the engineering team, you’ll help design and build reliable payment services used globally. You will: Develop and maintain backend services and microservices in Java (11/17/21) Design and implement robust test automation frameworks to ensure high-quality software delivery Support the modernisation of legacy systems , migrating towards API and microservices-based architecture Improve system efficiency by increasing Straight-Through Processing (STP) capabilities Collaborate closely with engineers, testers, and stakeholders in an Agile/DevOps environment Contribute to scalable, resilient solutions powering global payment flows Must-have experience Strong development experience with Java 11+ (Java 17+ preferred) Hands-on experience in software testing and building automation frameworks Solid understanding of RESTful APIs and microservices architecture Experience working with Git for version control Comfortable working in Unix/Linux environments and command-line tools Experience with databases and SQL (Oracle preferred) Experience with Spring / Spring Boot Nice to have Experience with Test-Driven Development (TDD) Knowledge of scripting languages such as Python or Bash Experience working within a QA or testing-focused team Understanding of application monitoring and observability tools The role has a Hybrid model : candidates form Cracow 6x per month, outside of Cracow 3 - 5 x per month, from Warsaw 6x per month

🏢 Summary: Backend Java Engineer role focused on developing and modernizing a high-load B2B gaming back-office platform processing millions of real-time transactions daily. The position involves building new features, improving scalability and reliability, and evolving a monolithic system toward distributed services. You will contribute to architectural design, performance optimization, and production issue resolution. 🗂️ Requirements: 5+ years of Java development experience, Strong knowledge of backend architecture, Experience with distributed systems, Experience with relational databases and SQL, Experience with message-driven systems, Experience refactoring production systems, Strong debugging and problem-solving skills, Intermediate English or higher 📃 Skills: Java, Spring, MSSQL, SQL, Kafka, Redis, Microservices 🏢 Description: Role Overview: We are looking for an experienced Java Engineer to join the client's backend team, which is working on the back-office platform of a high-load B2B gaming system. Their platform processes millions of transactions daily and supports real-time operations for multiple partners. As the system continues to grow, the engineering team is expanding to improve scalability, performance, and reliability, while gradually evolving parts of the platform from a monolithic architecture toward distributed services. You will work on both new functionality and architectural improvements, helping modernise critical parts of the platform. Technology Stack: Java 8 / Java 17, Spring Framework, MSSQL 2019, Kafka, Redis, distributed services with parts of the system still evolving from a monolithic architecture. Key Responsibilities: Develop new backend functionality for the platform; Improve system performance, scalability, and reliability; Participate in refactoring and modernisation of legacy components; Contribute to architectural discussions and technical design; Investigate and resolve production issues; Assess technical feasibility and complexity of business requirements; Collaborate closely with backend engineers, technical leads, and product teams Required Skills & Experience: 5+ years of Java development experience; Strong understanding of backend architecture and distributed systems; Experience working with relational databases and SQL; Familiarity with message-driven systems (Kafka or similar); Experience in improving or refactoring existing production systems; Strong problem-solving and debugging skills; Comfortable working in collaborative environments with code reviews and shared ownership of the codebase; English level: Intermediate or higher. The company guarantees you the following benefits: Global Collaboration: Join an international team where everyone treats each other with respect and moves towards the same goal; Autonomy and Responsibility: Enjoy the freedom and responsibility to make decisions without the need for constant supervision; Competitive Compensation: Receive competitive salaries reflective of your expertise and knowledge as our partner seeks top performers; Remote Work Opportunities: Embrace the flexibility of fully remote work, with the option to visit company offices that align with your current location; Flexible Work Schedule: Focus on performance, not hours, with a flexible work schedule that promotes a results-oriented approach; Unlimited Paid Time Off: Prioritise work-life balance with unlimited paid vacation and sick leave days to prevent burnout; Career Development: Access continuous learning and career development opportunities to enhance your professional growth; Corporate Culture: Experience a vibrant corporate atmosphere with exciting parties and team-building events throughout the year; Referral Bonuses: Refer talented friends and receive a bonus after they successfully complete their probation period; Medical Insurance Support: Choose the right private medical insurance and receive compensation (full or partial) based on the cost; Flexible Benefits: Customise your compensation by selecting activities or expenses you'd like the company to cover, such as a gym subscription, language courses, Netflix subscription, spa days, and more; Education Foundation: Participate in a biannual raffle for a chance to learn something new unrelated to your job as part of your commitment to ongoing education. Interview process: HR Interview with the Recruiter; Technical interview with the team; A 2-hour Final interview with the team. If you find this opportunity right for you, don't hesitate to apply or get in touch with us if you have any questions!

🏢 Summary: Senior Java Backend Engineer role focused on building and enhancing low-latency, high-performance financial trading systems within a capital markets division. The position involves core Java development from the ground up, working on distributed, large-scale systems processing millions of transactions daily. Fully remote role for Poland-based engineers, collaborating directly with North American teams. 🗂️ Requirements: 6+ years of backend Java development experience, Strong knowledge of algorithms, complexity and data structures, Deep understanding of Java standard library data structures and internals, Experience building distributed service-based systems, Experience working with message queues, Ability to diagnose and optimize low-latency, high-throughput systems, Experience with production issue analysis and root-cause diagnosis, Fluent English proficiency, Availability to work in US Eastern business hours during onboarding, Legal right to work and reside in Poland 📃 Skills: Java, JVM, Spring, SpringBoot, AWS, Algorithms, DataStructures, DistributedSystems, MessageQueues, Microservices 🏢 Description: Join the Java Engineering Team at a top N. American Bank Are you a Java engineer who enjoys working on large scale and high performance software? Do you love working with smart people on meaningful technology? Want to work in capital markets on financial trading systems? If so, read on. The Role at a Glance Senior Java Backend Engineer Fully remote for a top N. American bank (for residents of Poland only) Openings on multiple teams in the capital markets division (prime brokerage, platform team) Part of the core team - this is not a legacy support role or an outsourced B team We’re hiring experienced backend engineers (6+ years) to join a major N. American bank — directly supporting the development of financial trading systems . This is not a legacy maintenance or support role — you’ll be part of the core product team , building highly-performant, low-latency systems used across the firm. Are you a passionate Java developer who thrives on solving complex problems in low-latency, high-throughput trading systems ? Join us and work on interesting financial system engineering problems. Why Join Us? Work on a large-scale, low-latency trading system processing millions of daily transactions. No Legacy: Join an actively developed system — the engineers who built it originally are still on the team. Collaborate with a world-class team of developers across North America and Europe. Enjoy the stability of a long-term, fully remote role that only a bank can offer. A successful candidate will be a very strong programmer with current Java development experience. They must also be curious, open-minded, and desire to learn new things. English proficiency is a must. This role is for developers who excel at programming core Java from the ground up, not just integrating frameworks or APIs. If you’re fascinated by understanding systems ‘under the hood,’ this role is for you. Successful candidates enjoy geeking out about data structures and debugging application performance issues. This is a fully remote backend Java development role for a developer in Poland . You will be working through a Polish company that will provide the support and administrative assistance to make you successful in the role. We are looking for people to join the team long-term. Different teams have different working hour arrangements. For all roles, to ensure efficient onboarding, you’ll work in sync with the American team during US Eastern business hours for the first two months . Working this way maximizes your time overlap for answering questions, which means you can learn quickly. That means working until 21:00 CET. After that, some teams offer more flexibility your schedule can shift closer to standard Polish business hours. Only open to residents of Poland. Polish citizens, as well as legal residents with permission to work in Poland are welcome. What we offer Work that matters in the financial domain: Work on a trading system at an established financial institution, processing millions of transactions daily. Professional growth: Collaborate with smart, highly capable developers in a supportive and challenging environment. Direct collaboration : You will work directly with the client team in North America and in Poland. 1st-tier work : This is not a technical support or legacy maintenance role. The system is functional and is actively being built and you will take part in updating it. The people who built the system are still part of the team. Long-term commitment: This is not a fixed-scope or fixed-term outsourcing role; we value people who want to grow and contribute long-term. Flexibility & remote work: Fully remote position based in Poland with increasing schedule flexibility post-onboarding. Competitive Compensation: Above-average pay and ample time-off options. Responsibilities Design and implement robust software solutions for the bank’s trading systems using core Java (versions vary from team to team, and include 8, 17 and 21). Understand, develop, and improve the subsystems used by other teams in the trading platform. Create thorough test cases to ensure software stability and reliability. Collaborate with operations teams regarding building new features and improving existing functionality. Support production issues, including root-cause analysis and diagnosis. Requirements Must have Strong understanding of programming concepts, including algorithms, complexity, and data structures. Good knowledge of the data structures in the Java standard library - both breadth and internals. Experience building distributed service-based applications based on message queues. Strong analytical and problem-solving skills, to effectively diagnose production performance issues measured in microseconds. Open mind, curiosity, and a strong desire to learn new technologies and business domains. Ability to clearly explain non-trivial systems and algorithms. Ability to follow and understand technical conversations. Know when and how to ask questions that speed up learning. Ability to align your working schedule to US Eastern business hours. Nice to have Experience with financial markets and trading systems. Knowledge of AWS systems. Experience with Spring boot (some teams). Experience with JVM tuning (some teams). Experience working remotely with North American firms. A computer science degree from a top Polish school. The recruitment process Submit your CV. Answer a few written questions and a short programming exercise which you can do at your own pace. Participate in a three-stage interview process: Discuss your experience and skills. Solve verbal algorithm problems (focus on clarity and understanding). Tackle live coding challenges (no trick questions). No take-home assignments – we respect your time. Successful candidates will need to pass a standard background check.

🏢 Summary: Senior Java Backend Engineer role focused on building ultra-low-latency trading systems for equities, FX, and other asset classes at a top North American bank. The position involves developing high-performance backend services for algorithmic order management and order routing in a fully remote setup for Poland-based engineers. Candidates will work directly with trading and product teams on actively developed greenfield and semi-greenfield capital markets systems. 🗂️ Requirements: Current Java programming experience, Strong understanding of algorithms, complexity, multi-threading, and Java standard libraries, Good knowledge of Java collections framework and data structures, Experience building backend services for front-office trading systems, Understanding of front-office workflows and electronic trading platforms, Experience with algorithmic order management systems or order routing systems, Expertise in multi-threading, event-driven systems, and performance tuning, Knowledge of low-latency trading systems, Ability to design maintainable high-quality solutions, Strong communication skills, English proficiency, Ability to work with 6-hour overlap with US Eastern business hours, Residency and work authorization in Poland 📃 Skills: Java, Algorithms, Multithreading, Collections, Trading, Low-latency, Performance, Backend, Order-routing, OMS, FX, Equities, Microservices, Databases, Time-series 🏢 Description: Want to work on trading systems at a top N. American Bank This isn’t just another dev role. It’s your chance to engineer the core of global trading. We’re talking ultra-low-latency architectures, real-time market data, and automation at scale — all in an environment where milliseconds matter and billions move. You’ll work on greenfield and semi-greenfield projects, building trading systems for equities, options, FX (forex), and more. If you thrive on complexity, love solving performance challenges under pressure, and want to collaborate directly with traders and product teams at the sharp edge of financial technology, this is your arena. The Role at a Glance Senior Java Backend Engineer Building trading systems, including high-performance backend services for algorithmic order management and order routing (multiple projects & various asset classes) Fully remote for a top N. American bank (for residents of Poland only) Part of the core team - this is not a legacy support role or an outsourced B team This role requires experience building trading systems, ideally with order routing or algorithmic order management. Some capital markets experience is required. If you enjoy working on low-latency, high-throughput trading systems, join us and build the next generation of high-performance capital markets solutions. Why Join Us? Work on a large-scale, low-latency trading system . No Legacy: Join an actively developed system — the engineers who built it originally are still on the team. Collaborate with a world-class team of developers across North America and Europe. Enjoy the stability of a long-term, fully remote role that only a bank can offer. A successful candidate will be a very strong programmer with current Java development experience. They must also be curious, open-minded, and desire to learn new things. English proficiency is a must. This role is for developers who excel at programming core Java from the ground up, not just integrating frameworks or APIs. If you’re fascinated by understanding systems ‘under the hood,’ this role is for you. Successful candidates enjoy geeking out about data structures and debugging application performance issues. This is a fully remote backend Java development role for a developer in Poland . You will be working through a Polish company that will provide the support and administrative assistance to make you successful in the role. We are looking for people to join the team long-term. Only open to residents of Poland. Polish citizens, as well as legal residents with permission to work in Poland, are welcome. What we offer Work that matters in the financial domain: You’ll be building a high-performance trading system at an established financial institution. Professional growth: Collaborate with smart, highly capable developers in a supportive and challenging environment. Direct collaboration : You will work directly with the client team in North America and in Poland. 1st-tier work : This is not a technical support or legacy maintenance role. The system is functional and is actively being built and you will take part in updating it. The people who built the system are still part of the team. Long-term commitment: This is not a fixed-scope or fixed-term outsourcing role; we value people who want to grow and contribute long-term. Flexibility & remote work: Fully remote position based in Poland with increasing schedule flexibility post-onboarding. Competitive Compensation: Top pay and ample time-off options. Responsibilities Design and implement robust software solutions for equities and FX trading systems using core Java. Build high-performance backend services that algorithmically manage and route orders. Create thorough test cases to ensure software stability and reliability. Collaborate with operations teams regarding building new features and improving existing functionality. Requirements Must have Current Java programming experience, with a strong understanding of programming concepts, including algorithms, complexity, and multi-threading, and Java’s language capabilities and standard libraries. Good knowledge of the data structures: familiarity with the Java collections framework, depth of understanding of the commonly used data structures, intuition on what to use when. Proven experience building backend services for front-office trading systems. Deep understanding of front-office workflows and electronic trading platforms (any asset class). Built or contributed to the algorithmic order management systems or order routing systems (any asset class). Expertise in multi-threading, event-driven systems, and performance tuning. Ability to break down complex workflows into maintainable, high-quality solutions. Strong communication skills and comfort working in high-stakes, trader-facing environments. Knowledge that is required for building low-latency (measured in microseconds) trading systems. Ability to align your work with a 6-hour overlap with US Eastern business hours. Nice to have Exposure to time-series databases and market data integration. Familiarity with algorithmic workflows and pricing engines. A computer science degree from a top Polish school. The recruitment process Submit your CV. Answer a few written questions and a short programming exercise which you can do at your own pace. Participate in a three-stage interview process: Written screen Technical screen interview Three technical interviews with future team members Discuss your experience and skills. Solve verbal algorithm problems (focus on clarity and understanding). Tackle live coding challenges (no trick questions). No take-home assignments – we respect your time. Successful candidates will need to pass a standard background check.

🏢 Summary: Backend Java Developer role focused on building and maintaining high-performance, scalable systems for transaction, payment, and cashier functionalities within a complex trading platform. The position involves developing RESTful and RPC APIs, handling high-concurrency and large-scale data processing in distributed environments, and integrating with third-party services. The role requires strong production troubleshooting skills and collaboration within cross-functional teams. 🗂️ Requirements: 5+ years of Java backend development experience, Strong experience with Java 8+, Strong experience with Spring Boot, Experience in fintech product development, Experience with B2B systems, Hands-on experience with high-concurrency and multi-threaded environments, Experience with high-volume traffic systems, Experience with large-scale data processing, Knowledge of MyBatis, Redis, and message queues, Experience with MySQL and complex query optimization, Experience with Elasticsearch, Experience with Hadoop or big data technologies, Experience with event-driven architectures, Experience with unit and integration testing, Experience integrating third-party APIs, Understanding of distributed systems and microservices, EU work permit and EU-based work availability 📃 Skills: Java, Spring, SpringBoot, MyBatis, Redis, MySQL, Elasticsearch, Hadoop, Dubbo, REST, RPC, SQL, Multithreading, Microservices, Kafka, RabbitMQ 🏢 Description: 🟣 You will be: designing, developing, and maintaining high-performance backend systems using Java and Spring Boot, working on transaction, payment, and cashier-related functionalities within a complex trading platform, building and maintaining RESTful and RPC APIs (e.g. using Apache Dubbo), developing solutions capable of handling high-volume traffic, high concurrency, and multi-threaded environments, processing and optimizing large volumes of data within distributed systems, collaborating with cross-functional teams to deliver scalable and reliable systems, integrating backend services with third-party applications and external systems, troubleshooting, debugging, and optimizing system performance in production environments. 🟣 Your profile: 5+ years of professional experience in Java backend development, strong experience with Java (8+) and Spring Boot, experience in business product development within fintech environments, experience working on B2B products, hands-on experience with high-concurrency systems, multi-threading, and high-volume traffic environments, proven experience working with large-scale data processing systems, solid knowledge of technologies such as MyBatis, Redis, and message queue systems, experience working with relational databases such as MySQL, including writing complex queries and performance tuning, experience working with Elasticsearch and big data technologies such as Hadoop, experience with messaging systems (queues) and event-driven architectures, experience with unit and integration testing, experience integrating with third-party services and APIs, strong debugging and problem-solving skills, solid understanding of software design patterns and backend architectures, practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery, good communication skills and ability to work in a team environment, immediate availability or a short notice period is preferred. Work from the European Union region and a work permit are required. 🟣 Nice to have: familiarity with RPC frameworks such as Apache Dubbo, experience working with systems serving large-scale user bases, understanding of distributed systems and microservices architecture, experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work, interest in and familiarity with emerging AI-driven practices (e.g. agent-based workflows, automation patterns, AI-augmented development), with a willingness to explore and experiment beyond standard approaches. 🟣 Recruitment Process: CV review – HR call – Technical Interview – Client Interview – Decision 🎁 Benefits 🎁 ✍ Development: development budgets of up to 6,800 PLN, we fund certifications e.g.: AWS, Azure, access to Udemy, O'Reilly (formerly Safari Books Online) and more, events and technology conferences, technology Guilds, internal training, Xebia Upskill. 🩺 We take care of your health: private medical healthcare, multiSport card - we subsidise a MultiSport card, mental Health Support. 🤸‍♂️ We are flexible: B2B or employment contract, contract for an indefinite period.

🏢 Summary: Senior Java Backend Engineer role focused on building and enhancing low-latency FX trading systems for a top North American bank, fully remote from Poland. The position involves developing high-performance backend services for algorithmic order management and order routing in real-time, high-throughput environments. This is a long-term opportunity to work on actively developed, large-scale trading platforms in close collaboration with traders and international teams. 🗂️ Requirements: Current professional Java programming experience, Strong understanding of algorithms, complexity and multi-threading, Deep knowledge of Java language and standard libraries, Strong knowledge of data structures and Java Collections Framework, Experience building backend services for front-office trading systems, Understanding of front-office workflows and electronic trading platforms, Experience with algorithmic order management or order routing systems, Expertise in multi-threading, event-driven systems and performance tuning, Knowledge of low-latency trading systems (microsecond level), English proficiency, Residence and legal right to work in Poland, Ability to overlap 6 hours with US Eastern Time 📃 Skills: Java, Algorithms, Multithreading, DataStructures, Collections, Concurrency, LowLatency, OrderRouting, OrderManagement, ElectronicTrading, EventDriven, PerformanceTuning, FX, Backend 🏢 Description: Join the Fixed Income Trading Systems Team at a top N. American Bank This isn’t just another dev role. It’s your chance to engineer the core of global trading. We’re talking ultra-low-latency architectures, real-time market data, and automation at scale — all in an environment where milliseconds matter and billions move. You’ll work on greenfield and semi-greenfield projects, building FX (forex) trading workflows. If you thrive on complexity, love solving performance challenges under pressure, and want to collaborate directly with traders and product teams at the sharp edge of financial technology — this is your arena. The Role at a Glance Senior Java Backend Engineer Building a FX trading systems, including high-performance backend services for algorithmic order management and order routing. 270zł - 300zł / hr B2B net + VAT Fully remote for a top N. American bank (for residents of Poland only) This role requires experience building trading systems, specifically with order routing or algorithmic order management. If you enjoy working on low-latency, high-throughput trading systems, join us and build the next generation of high-performance capital markets solutions. Why Join Us? Work on a large-scale, low-latency trading system . No Legacy: Join an actively developed system — the engineers who built it originally are still on the team. Collaborate with a world-class team of developers across North America and Europe. Enjoy the stability of a long-term, fully remote role that only a bank can offer. A successful candidate will be a very strong programmer with current Java development experience. They must also be curious, open-minded, and desire to learn new things. English proficiency is a must. This role is for developers who excel at programming core Java from the ground up, not just integrating frameworks or APIs. If you’re fascinated by understanding systems ‘under the hood,’ this role is for you. Successful candidates enjoy geeking out about data structures and debugging application performance issues. This is a fully remote backend Java development role for a developer in Poland . You will be working through a Polish company that will provide the support and administrative assistance to make you successful in the role. We are looking for people to join the team long-term. Only open to residents of Poland. Polish citizens, as well as legal residents with permission to work in Poland, are welcome. What we offer Work that matters in the financial domain: You’ll be building high performance trading system at an established financial institution. Professional growth: Collaborate with smart, highly capable developers in a supportive and challenging environment. Direct collaboration : You will work directly with the client team in North America and in Poland. 1st-tier work : This is not a technical support or legacy maintenance role. The system is functional and is actively being built and you will take part in updating it. The people who built the system are still part of the team. Long-term commitment: This is not a fixed-scope or fixed-term outsourcing role; we value people who want to grow and contribute long-term. Flexibility & remote work: Fully remote position based in Poland with increasing schedule flexibility post-onboarding. Competitive Compensation: Top pay and ample time-off options. Responsibilities Design and implement robust software solutions for FX trading systems using core Java. Build high-performance backend services that algorithmically manage and route orders. Create thorough test cases to ensure software stability and reliability. Collaborate with operations teams regarding building new features and improving existing functionality. Requirements Must have Current Java programming experience, with a strong understanding of programming concepts, including algorithms, complexity, and multi-threading, and Java’s language capabilities and standard libraries. Good knowledge of the data structures: familiarity with the Java collections framework, depth of understanding of the commonly used data structures, intuition on what to use when. Proven experience building backend services for front-office trading systems. Deep understanding of front-office workflows and electronic trading platforms (any asset class). Built or contributed to the algorithmic order management systems or order routing systems (any asset class). Expertise in multi-threading, event-driven systems, and performance tuning. Ability to break down complex workflows into maintainable, high-quality solutions. Strong communication skills and comfort working in high-stakes, trader-facing environments. Knowledge that is required for building low-latency (measured in microseconds) trading systems. Ability to align your work with a 6 hour overlap with US Eastern business hours. Nice to have Experience with trading protocols or FX trading systems. Exposure to time-series databases and market data integration. Familiarity with algorithmic workflows and pricing engines. A computer science degree from a top Polish school. The recruitment process Submit your CV. Answer a few written questions and a short programming exercise, which you can do at your own pace. Participate in an online three-stage interview process: Technical screen interview Three technical interviews with future team members Discuss your experience and skills. Solve verbal algorithm problems (focus on clarity and understanding). Tackle live coding challenges (no trick questions). Successful candidates will need to pass a standard background check.

🏢 Summary: Senior Java Backend Engineer role focused on developing and maintaining Java applications for a global financial compliance solution, including AML and KYC systems. The position involves working in an agile, international team to design, integrate, and enhance cloud-based backend systems. Hybrid work model with on-site presence in Krakow required. 🗂️ Requirements: 5+ years of experience in Java development, Experience with Spring framework, Strong SQL skills, Experience with Oracle databases, Experience with MongoDB, Experience working in Linux environments, Bash scripting skills, Understanding of SDLC, Experience with CI processes, Ability to work on-site in Krakow 3 days per week, English proficiency B2 or higher 📃 Skills: Java, Spring, SQL, Oracle, MongoDB, Linux, Bash, Azure, Databricks, Git, GitLab, Nexus, Ansible, RPM, Denodo 🏢 Description: Join us as a Senior Java Backend Engineer . Experience with Azure Cloud and Databricks will be highly beneficial. Your primary responsibilities will include developing and maintaining Java-based applications for a global financial compliance solution. You will work in a highly collaborative, agile environment, partnering with colleagues from diverse backgrounds to design and integrate Anti-Money Laundering (AML) and Know Your Client (KYC) solutions that help protect our client from financial crime risks. The client operates in the financial services domain, focusing on regulatory compliance and risk management. Ready to launch your career in cloud engineering? Apply now and join our global team! This role offers a hybrid model, with 3 days per week working from the client's office in Krakow, Poland. Responsibilities Develop and maintain Java-based applications Drive continuous integration and improvements Contribute to architecture, standards, and guidelines for globally deployed software Support product management in driving the product roadmap Collaborate closely with the team to deliver robust, sustainable solutions aligned with business requirements and organizational standards Advise Business Analysts, Testers, and Management on technical matters Requirements 5+ years of experience developing Java applications (Spring framework is a plus) Solid SQL database skills (Oracle preferred; MongoDB experience is a plus) Comfortable working in a Linux server environment, including bash scripting Good understanding of application development and support lifecycle (SDLC) Well-developed business communication skills (written and verbal) Experience working as part of a global team Strong personal prioritization and time management skills Strong analytical, problem-solving, and synthesizing abilities Ability to communicate effectively in both written and spoken English (B2 level or higher) Ability to work 3 days per week in the Krakow office Nice to have Familiarity with MS Azure Cloud platforms, Databricks, Denodo Experience with DevOps tools (Git, GitLab Pipelines, Nexus, Ansible, RPM packaging) We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview We will reach out to selected candidates exclusively EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Long-term role in building and evolving a high-availability, cloud-ready payment processing platform based on microservices architecture. The position involves designing new payment architecture, developing robust backend solutions, and driving DevOps practices in close collaboration with engineering teams. The project focuses on scalability, resilience, automation, and architectural decision-making within a modern financial ecosystem. 🗂️ Requirements: Minimum 8 years of experience as Backend Engineer, Strong knowledge of Java, Strong knowledge of Spring Boot, Experience designing and implementing microservices, Experience with distributed systems, Experience with Kafka, Experience with Docker, Experience with Kubernetes, Knowledge of cloud solutions, Knowledge of DevOps or DevSecOps practices, Ability to design highly available and fault-tolerant systems, Very good command of English 📃 Skills: Java, SpringBoot, Microservices, Kafka, Docker, Kubernetes, SQL, Linux, Splunk, Grafana, Prometheus, Jaeger, Kiali, OpenTelemetry, CI/CD, DevOps, DevSecOps, ServiceMesh, Cloud 🏢 Description: O projekcie Dołączysz do zespołu budującego nowoczesną platformę płatniczą nowej generacji dla dużej instytucji finansowej. Tworzymy lekki, skalowalny silnik przetwarzania płatności, który pozwala szybko wdrażać nowe funkcjonalności biznesowe i modernizować istniejący ekosystem płatności. Platforma jest projektowana jako wysoce dostępna, odporna na awarie i gotowa do pracy w środowisku chmurowym. Rozwiązanie opiera się na ponownym wykorzystaniu sprawdzonych komponentów, co pozwala na szybsze i bardziej efektywne dostarczanie nowych funkcji. Pracujemy w zwinny sposób, kładąc duży nacisk na automatyzację, wysoką jakość kodu i testy wbudowane w proces wytwarzania oprogramowania. Nasz zespół ściśle współpracuje z DevOps i innymi zespołami inżynieryjnymi, dbając o ciągłą integrację, dostarczanie i monitorowanie systemu. Pracujemy w zwinny sposób, kładąc duży nacisk na automatyzację, wysoką jakość kodu i testy wbudowane w proces wytwarzania oprogramowania. Nasz zespół ściśle współpracuje z DevOps i innymi zespołami inżynieryjnymi, dbając o ciągłą integrację, dostarczanie i monitorowanie systemu. Projekt jest długoterminowy i oferuje możliwość pracy nad transformacją całego ekosystemu płatniczego, udziału w decyzjach architektonicznych oraz rozwijania umiejętności w obszarze cloud, mikroserwisów i nowoczesnych praktyk DevOps. Aktualnie pracujemy z technologiami : Java 17+, Spring Boot, mikroserwisy, Kafka, Docker, Kubernetes, Service Mesh, SQL, Linux, monitoring i observability (Splunk, Grafana, Prometheus, Jaeger, Kiali, OpenTelemetry), CI/CD i DevOps/DevSecOps. Hybryda: 1-2 x w tygodniu z biura w Krakowie. Twoje zadania Projektowanie i rozwój nowej architektury płatniczej. Tworzenie wysokiej jakości kodu i testów jednostkowych/integracyjnych. Zapewnienie wysokiej dostępności, niezawodności i bezpieczeństwa systemów. Wsparcie transformacji istniejącego środowiska płatniczego. Rozwiązywanie problemów architektonicznych i blokad technicznych. Współpraca z zespołami DevOps nad CI/CD i automatyzacją infrastruktury. Prowadzenie analiz technicznych i studiów wykonalności. Mentoring i coaching innych inżynierów w zespole. Doradztwo architektoniczne i techniczne dla zespołów projektowych. Zapewnienie zgodności z obowiązującymi standardami i kontrolami. Wymagania Minimum 8 lat doświadczenia jako Backend Engineer . Bardzo dobra znajomość Java i Spring Boot . Doświadczenie w projektowaniu i implementacji mikroserwisów oraz systemów rozproszonych . Doświadczenie z Kafka, Docker, Kubernetes . Znajomość rozwiązań chmurowych i DevOps/DevSecOps . Umiejętność projektowania systemów wysoko dostępnych i odpornych na awarie. Bardzo dobra znajomość języka angielskiego. Mile widziane Doświadczenie w instytucjach finansowych, szczególnie w obszarze płatności. Znajomość języków Go lub Rust. Doświadczenie w JVM tuning i diagnostyce wydajności. Wiedza z zakresu cyberbezpieczeństwa, regulacji i prywatności danych. Sam/a zobacz, dlaczego warto być w j-labs! Dołączysz do firmy stworzonej przez inżynierów dla inżynierów , która istnieje na rynku od 15 lat. Obecnie zatrudniamy ponad 500 osób . j-labs to stabilność i długofalowa współpraca – około 25% załogi to osoby pracujące już ponad 5 lata! Możesz zmienić projekt – rób to co lubisz, rozwijaj swoje kompetencje, zdobywaj nowe. Robimy dobre IT albo wcale . Technologie, w których pracujemy to m.in. Java 17/21,  Spring, Hibernate, Mikroserwisy,  AWS/Azure/GSP/,  Terraform, Docker, Kubernetes,Kafka Eksperci przyciągają ekspertów - średnie doświadczenie naszych inżynierów wynosi 11 lat , a 30% zostaje zatrudnionych z polecenia . Stawiamy na knowledge sharing i rozwój . Organizujemy Talk4Devs, meet’upy , dajemy Ci przestrzeń do budowania swojej marki osobistej jako prelegent, czy prowadzenia własnych projektów, których rezultaty możesz przedstawiać m.in. na naszym blogu. Dołącz do Gildii Technologicznej l ub stwórz własną - nasze community zrzeszają specjalistów w obszarach : Java , Kotlin, .NET, Frontend, Management, DevOps, Quality Assurance Mamy zakodowane, że jest czas pracy i czas nie pracy, więc bardzo dbamy o to, aby work life balance został zachowany. Otrzymaliśmy w tym roku certyfikat Great Place to Work (aż 80% odpowiedzi w ankiecie dotyczącej różnych obszarów wybierało najwyższe noty, jesteśmy w pierwszej 10 firm z najlepszym wynikiem)

🏢 Summary: Contract role focused on building a next-generation payment platform using a modern, future-proof tech stack within a cross-functional team. The position centers on designing and operating data-intensive systems, developing .NET-based backend services, and ensuring reliable, scalable deployments in containerized environments. Strong emphasis is placed on database performance, distributed systems, and CI/CD automation in regulated environments. 🗂️ Requirements: Proven experience designing and operating data-intensive systems in MS SQL Server environments, Strong expertise in database performance tuning, indexing, and query optimization, Experience building backend services with .NET and C#, Solid understanding of microservices architectures and distributed systems, Experience with asynchronous messaging and event-driven systems, Hands-on experience with containerized and orchestrated environments, Experience managing or contributing to CI/CD pipelines for database and application deployments, Fluency in English 📃 Skills: MS SQL Server, .NET, C#, Microservices, DistributedSystems, Kafka, IBMMQ, Docker, Kubernetes, OpenShift, CI/CD, SQL 🏢 Description: Description Build the next-generation payment platform on a modern and future-proof tech stack. Working in a cross-functional team What we’re looking for · Proven ability to design, optimize, and operate data-intensive systems, including schema design, performance tuning, and production troubleshooting in MS SQL Server–based environments. · Deep understanding of database performance and reliability, including indexing strategies, query optimisation, and handling production issues. · Experience building and operating backend services using .NET/C#, with a solid understanding of microservice architectures and distributed systems. · Experience designing and working with asynchronous messaging and event-driven systems, using Kafka, IBM MQ, or similar technologies. · Experience running services in containerised and orchestrated environments (Docker, Kubernetes/OpenShift), with awareness of scaling, resilience, and failure modes. · Experience contributing to or owning CI/CD pipelines for database changes and deployment automation, with a focus on safe, repeatable releases. · A collaborative engineering mindset, with a willingness to share knowledge, learn continuously, and improve how the team builds and runs software. · Meritorious with experience from financial services, payments, or other regulated environments. · Strong communication skills, with fluency in English; Swedish is a plus Start date: 2026-06-26 End date: 2027-06-25 Location : Stockholm

🏢 Summary: Senior Java Software Engineer role focused on building and modernizing cloud-native platforms that connect trading systems with operations and regulatory applications within a global investment banking environment. The position involves developing scalable data processing and streaming solutions as part of a multiyear cloud transformation initiative. You will work in agile teams to migrate legacy systems and implement robust CI/CD-driven delivery pipelines. 🗂️ Requirements: Bachelor's degree in Computer Science or relevant technical certification, Strong proficiency in Java and object-oriented design, Hands-on experience with Apache Spark, Proficiency in Python, Experience with CI/CD pipelines and DevOps tools, Practical knowledge of TDD, Experience with cloud platforms (Azure, AWS, or GCP), Understanding of software design principles and patterns, Experience with agile development methodologies 📃 Skills: Java, Python, Apache, Spark, Azure, AWS, GCP, CI/CD, Azure, DevOps, GitHub, GitLab, TDD, Cloud, Databricks, Kubernetes 🏢 Description: For our client, a leading global investment banking institution, we are looking for a Senior Java Software Engineer who will be instrumental in transforming critical financial operations infrastructure. You'll work within an agile team to develop and deliver the strategic backbone that connects trading systems with operations and regulatory platforms, forming a cornerstone of the organization's digital transformation initiative. Our client operates in the investment banking and financial services domain, specifically focusing on digital operations transformation within regulatory and data management systems. This project is part of a multiyear strategic roadmap to migrate and leverage cloud technology to outperform existing technology stacks. The initiative plays a crucial role in enabling the investment bank to meet regulatory obligations while creating value from extensive financial data assets. You'll be part of the Digital Operations technology stream, working in small, autonomous agile teams that are empowered to respond to client demands while continuously improving the delivery experience. The team operates globally with members across multiple continents, fostering an inclusive and diverse collaborative environment. This role offers a hybrid model, with 3 days per week working from the client's office in Krakow, Poland. Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Design and develop strategic platforms enabling trade executions to flow seamlessly from trading systems to operations and regulatory applications Transform epics and features into robust, scalable functionality within cloud-native architectures Collaborate closely with agile pod members in sprint cycles to iteratively deliver on product requirements Work directly with product teams to understand and implement complex functional requirements Implement modern data streaming, real-time, and batch processing solutions Develop and maintain CI/CD pipelines using DevOps best practices Apply Test-Driven Development (TDD) methodologies to ensure code quality Contribute to cloud architecture design and implementation decisions Participate in code reviews and technical design discussions Support the migration of legacy systems to modern cloud-based solutions Requirements Bachelor's degree in Computer Science or relevant technical certification Strong proficiency in Java programming and object-oriented design principles Solid experience with Apache Spark for big data processing Proficiency in Python for data processing and automation tasks Significant experience with DevOps CI/CD pipelines and tools such as Azure DevOps, GitHub, or GitLab Strong background in Test-Driven Development (TDD) practices Proven experience with cloud architecture and deployment on Azure, AWS, or GCP platforms Deep understanding of software design principles and patterns Experience with agile development methodologies and sprint-based delivery Strong problem-solving and analytical skills Excellent communication and collaboration abilities Ability to work effectively in diverse, distributed teams Nice to have Experience with modern data streaming technologies and real-time processing frameworks Hands-on experience with Databricks for advanced analytics and machine learning Knowledge of Kubernetes for container orchestration and microservices deployment Understanding of financial services domain and regulatory requirements Experience with batch processing frameworks and data pipeline orchestration Familiarity with investment banking operations and trading systems Previous experience in digital transformation initiatives Knowledge of regulatory compliance frameworks in financial services We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.