Lead Java Engineer (eTrading) – Fixed Income & FX

🏢 Summary: Lead Java Developer role focused on designing and delivering component-based services for a global fixed income trading platform, driving modernization, platform standardization, and high-quality software delivery. The position involves working with Java enterprise technologies, integrations, and supporting migration to a strategic platform in a global environment. You will own delivery outcomes and collaborate closely with business and IT stakeholders. 🗂️ Requirements: 7+ years of professional software development experience, Deep expertise in Core Java, Hands-on experience with SQL, Hands-on experience with Spring framework, Strong written and verbal English skills, Ability to collaborate with global teams 📃 Skills: Java, SQL, Spring, JMS, ORM, REST, WebServices, TCP/IP, Bash, Perl, Python, C++, Redis, Multithreading, Networking, Scrum, Kanban 🏢 Description: We are building a Lead Java Developer role to strengthen a global fixed income trading platform built on Java and enterprise standards. You will design and deliver component-based services using technologies like JMS, ORM, Spring, WebServices, REST, plus integrations across TCP/IP networking and scripting (bash, Perl, Python) and even C++. Apply now to help modernize the platform and drive high-quality delivery Responsibilities Design and implement software components that meet defined requirements Own delivery outcomes by ensuring software quality and agreed standards Partner with the customer to clarify and understand deliverables Support the business with platform rationalization and optimization efforts Drive reduction of technical debt and advance platform standardization Assist the business with migration to the strategic platform Collaborate with IT teams across global locations Requirements Proven 7+ years of professional experience in software development Deep expertise in Core Java Hands-on proficiency with SQL and the Spring framework Excellent communication and effective time management skills Collaborative team player mindset with a pragmatic approach to software delivery Strong English skills (written and verbal) Nice to have Experience with Java multithreading, networking, and web services Familiarity with JMS and Redis Ability to elicit and document requirements with strong focus on software quality Knowledge of the investment banking domain Understanding of Agile principles, including Scrum or Kanban We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment 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) 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

🏢 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: Lead Java Developer role focused on building and modernizing high-performance Java solutions for Fixed Income Rates and Credit trading platforms. The position involves developing scalable low-latency applications, supporting production systems, and collaborating with global IT and business stakeholders. Hybrid work from the Krakow office three days per week is required. 🗂️ Requirements: 5+ years of professional Java development experience, Experience with low-latency programming, Experience with multi-threaded programming, Strong problem-solving and analytical skills, Ability to explain technical concepts to non-technical stakeholders, Ability to learn new technologies quickly, English proficiency at B2 level or higher 📃 Skills: Java, Kafka, AVRO, Azure, AWS, GCP, Bloomberg, Tradeweb 🏢 Description: We are building high-performance Java solutions for Fixed Income Rates and Credit trading desks within a global markets technology organization. As a Lead Java Developer, you will translate trading needs into scalable services, modernize existing components, and partner across regions to keep the platform reliable and fast. Please note that working from the office in Krakow 3 days per week is required. Responsibilities - Design and deliver scalable Java applications that address complex business challenges - Improve performance and maintainability by optimizing and refactoring existing components - Facilitate UAT and run demonstrations with key stakeholders - Convert business requirements into clear technical specifications - Coordinate with global IT teams to enable seamless integration - Support production releases and provide ongoing maintenance - Develop cutting-edge solutions while sustaining a sophisticated, multi-faceted platform Requirements - Proven track record with 5+ years of professional Java development experience - Hands-on experience with low-latency and multi-threaded programming techniques - Excellent problem-solving and analytical skills to tackle complex technical challenges - Strong communication skills, able to explain complex technical concepts to non-technical stakeholders - Willingness to learn quickly and adapt to new technologies and market changes - English proficiency at B2 (Upper-Intermediate) level or higher Nice to have - Understanding of financial markets, particularly Rates and Credit bonds/derivatives and trading platforms (e.g., Bloomberg, Tradeweb) - Familiarity with messaging systems like Kafka and data serialization formats (e.g., AVRO) - Knowledge of cloud platforms (Azure, AWS or GCP)

🏢 Summary: Senior-level Java engineering role focused on building a secure, scalable, blockchain-based payment platform using modern cloud-native and microservices architecture. The position involves designing and developing high-quality backend services, event-driven systems, and APIs in a distributed environment. The role emphasizes architectural ownership, scalability, and production-grade system reliability. 🗂️ Requirements: 8+ years of commercial experience in Java development, Strong experience with Spring Boot, Experience designing distributed systems and microservices architecture, Hands-on experience with Kafka and/or Azure Event Hub, Production experience with GraphQL, Practical experience with Docker, Practical experience with Kubernetes, Experience delivering cloud-based scalable solutions, Strong knowledge of system design and integration patterns, Understanding of high-availability systems 📃 Skills: Java, Spring, SpringBoot, Kafka, Azure, EventHub, GraphQL, Docker, Kubernetes, Microservices, Blockchain, Cloud 🏢 Description: Lead Java Engineer We are looking for a highly experienced Java Engineer to join an advanced financial technology initiative focused on building a next-generation payment solution leveraging blockchain concepts. The project aims to create a secure, scalable, and enterprise-ready platform enabling seamless value transfers between financial entities. Role Responsibilities: Design and develop high-quality backend services using Java and Spring Boot Architect and enhance microservices-based systems Implement event-driven solutions using technologies such as Kafka and Azure Event Hub Design and expose APIs (including GraphQL) for efficient data exchange Work with containerized environments using Docker and Kubernetes Contribute to architectural decisions, scalability improvements, and performance optimization Ensure clean code standards, system reliability, and production readiness Requirements: 8+ years of commercial experience in Java development Strong background in Spring Boot and distributed systems architecture Hands-on experience with event streaming platforms (Kafka and/or Azure Event Hub) Experience with GraphQL in production environments Practical knowledge of containerization and orchestration (Docker, Kubernetes) Experience delivering cloud-based, scalable solutions Solid understanding of system design, integration patterns, and high-availability systems Opportunity to work on an innovative financial platform built with modern, cloud-native technologies.

🏢 Summary: Java Developer role focused on building and optimizing high-performance applications for Fixed Income Rates and Credit trading desks. The position involves developing scalable Java solutions, collaborating with global IT teams, and supporting trading platform integrations in a hybrid work environment. 🗂️ Requirements: 3+ years of professional Java development experience, Knowledge of low-latency programming, Knowledge of multi-threaded programming, Experience with asynchronous programming, Strong Java Core skills, Excellent problem-solving skills, Strong analytical skills, Strong communication skills, Ability to explain technical concepts to non-technical stakeholders, Willingness to learn new technologies, English proficiency at B2 level or higher 📃 Skills: Java, Multithreading, Asynchronous, Kafka, AVRO, Azure, AWS, GCP, Bloomberg, Tradeweb 🏢 Description: We are seeking a passionate Java Developer to create innovative applications for Fixed Income Rates and Credit trading desks. You'll deliver high-performance solutions while maintaining existing functionality and join the global Fixed Income Rates and Credit markets technology team. A 3-day-per-week presence in our office is required. Responsibilities Architect and develop scalable Java applications for complex business challenges Optimize and refactor existing components to improve performance and maintainability Lead UAT and demonstration sessions with key stakeholders Translate business requirements into technical specifications Collaborate with global IT teams to ensure seamless integration Support production rollouts and provide ongoing maintenance Requirements 3+ years of professional Java development experience Knowledge of low-latency and multi-threaded programming techniques Skills in asynchronous programming, multithreading and Java Core Excellent problem-solving and analytical skills Strong communication skills, able to explain complex technical concepts to non-technical stakeholders Willingness to learn and adapt to new technologies and market changes English proficiency at B2 level or higher Nice to have Understanding of financial markets, particularly Rates and Credit bonds/derivatives with trading platforms such as Bloomberg and Tradeweb Familiarity with messaging systems like Apache Kafka and data serialization formats such as AVRO Knowledge of cloud platforms such as Azure, AWS or GCP Background in financial services, trade execution and trade lifecycle 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: Lead Java Developer role focused on designing and modernizing a global fixed income trading platform using Java enterprise technologies, integrations, and platform optimization practices. The position involves delivering high-quality software components, reducing technical debt, supporting migration initiatives, and collaborating with global IT teams. Candidates should bring strong Core Java, SQL, and Spring expertise with experience in enterprise application development. 🗂️ Requirements: 7+ years of professional software development experience, Expertise in Core Java, Hands-on experience with SQL, Hands-on experience with Spring, Strong written and verbal English communication skills, Effective time management skills, Ability to collaborate in global teams, Pragmatic approach to software delivery 📃 Skills: Java, SQL, Spring, JMS, ORM, REST, WebServices, TCP/IP, Bash, Perl, Python, C++, Redis, Scrum, Kanban, Agile 🏢 Description: We are building a Lead Java Developer role to strengthen a global fixed income trading platform built on Java and enterprise standards. You will design and deliver component-based services using technologies like JMS, ORM, Spring, WebServices, REST, plus integrations across TCP/IP networking and scripting (bash, Perl, Python) and even C++. Apply now to help modernize the platform and drive high-quality delivery Responsibilities Design and implement software components that meet defined requirements Own delivery outcomes by ensuring software quality and agreed standards Partner with the customer to clarify and understand deliverables Support the business with platform rationalization and optimization efforts Drive reduction of technical debt and advance platform standardization Assist the business with migration to the strategic platform Collaborate with IT teams across global locations Requirements Proven 7+ years of professional experience in software development Deep expertise in Core Java Hands-on proficiency with SQL and the Spring framework Excellent communication and effective time management skills Collaborative team player mindset with a pragmatic approach to software delivery Strong English skills (written and verbal) Nice to have Experience with Java multithreading, networking, and web services Familiarity with JMS and Redis Ability to elicit and document requirements with strong focus on software quality Knowledge of the investment banking domain Understanding of Agile principles, including Scrum or Kanban 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: Senior Java Developer role focused on building and enhancing high-performance applications for Fixed Income Rates and Credit trading desks, with a hybrid work model in Krakow. The position involves designing scalable Java solutions, optimizing low-latency systems, and collaborating with global teams to deliver and maintain complex trading platforms. The offer includes career development programs, certifications, and a comprehensive benefits package. 🗂️ Requirements: 5+ years of professional Java development experience, Experience with low-latency programming, Experience with multi-threaded programming, Strong problem-solving and analytical skills, Ability to communicate technical concepts to non-technical stakeholders, English proficiency at B2 level or higher, Availability to work from the Krakow office 3 days per week 📃 Skills: Java, Multithreading, Low-latency, Kafka, AVRO, Azure, AWS, GCP, Bloomberg, Tradeweb 🏢 Description: We are looking for an enthusiastic Senior Java Developer to build innovative applications for Fixed Income Rates and Credit trading desks. As a member of our global Fixed Income Rates and Credit markets technology team—a dynamic, driven group operating across 8 cities in 6 countries—you will provide high-performance solutions while preserving existing functionality. Please be aware that this role requires working from the Krakow office 3 days per week. Responsibilities Design and build scalable Java applications to address complex business challenges Enhance and refactor existing components to boost performance and maintainability Lead UAT and demonstration sessions with key stakeholders Convert business requirements into technical specifications Work alongside global IT teams to achieve seamless integration Assist with production rollouts and deliver ongoing maintenance Build cutting-edge solutions while sustaining a sophisticated, multi-faceted platform Requirements 5+ years of professional experience developing in Java Familiarity with low-latency and multi-threaded programming methods Outstanding problem-solving and analytical abilities Strong communication skills, capable of clarifying complex technical concepts for non-technical stakeholders Eagerness to learn and adjust to new technologies and market shifts English skills at B2 level or above Nice to have Comprehension of financial markets, especially Rates and Credit bonds/derivatives along with trading platforms (e.g., Bloomberg, Tradeweb) Experience with messaging systems such as Kafka and data serialization formats (e.g., AVRO) Understanding of cloud platforms (Azure, AWS or GCP) We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment 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) 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

🏢 Summary: Lead Java Backend Developer role focused on building a rule-based FX hedging and overlay platform using Java, Spring Boot and microservices. The position involves developing backend services, integrating external systems, optimizing performance and contributing to architectural decisions in a distributed enterprise environment. Hybrid work with 3 days per week in the office is required. 🗂️ Requirements: 5+ years of software development experience in Java backend or full-stack development, Bachelor's degree in Computer Science or related field, Proficiency in Java, Experience with Spring Boot, Knowledge of microservices architectures, Understanding of REST API design, Experience building and consuming RESTful services, Experience with PostgreSQL, Experience with MySQL, Exposure to NoSQL databases, Knowledge of distributed systems, Experience with Kafka, Understanding of event-driven architecture, Experience with transactional systems and data consistency patterns, Ability to work independently and contribute to technical solutions, Experience working in Agile/Scrum teams, English proficiency at B2 level or higher, Availability to work from the office 3 days per week 📃 Skills: Java, Spring, SpringBoot, Microservices, REST, PostgreSQL, MySQL, NoSQL, Kafka, Agile, Scrum 🏢 Description: We are seeking a Lead Java Backend Developer to join the team building a new Currency Administration (FX hedging/overlay) platform. This system is a rule-based engine that consumes external data, performs FX overlay calculations and raises alerts for required transactions through an internal exception dashboard. The ideal candidate brings strong expertise in Java/Spring and the ability to think independently and suggest improvements, acting as a proactive problem-solver rather than just a coder. Please note that working from the office 3 days per week is required. Responsibilities Implement business logic for the rule-based FX overlay engine Integrate the platform with external data sources and internal systems Ensure code quality through rigorous testing and code reviews Optimize performance and reliability of back-end services Collaborate with global teams and propose technical improvements Troubleshoot and resolve issues across the platform Contribute to architectural decisions and technical direction Requirements 5+ years of professional experience in software development with a focus on Java back-end or full-stack development Bachelor's degree in Computer Science or related field (or equivalent practical experience) Proficiency in Java (8+), Spring Boot and microservices architectures Understanding of REST API design with experience building and consuming RESTful services Experience with relational databases such as PostgreSQL and MySQL, with exposure to NoSQL stores Familiarity with transactional systems and data consistency patterns in enterprise applications Knowledge of distributed systems, messaging frameworks such as Kafka and event-driven architecture Capability to work independently, grasp complex business logic and contribute proactively to technical solutions Skills in collaboration within cross-functional teams and experience working in an Agile/Scrum environment English proficiency at B2 level or higher 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: Senior Java Developer role focused on building and optimizing high-performance applications for Fixed Income Rates and Credit trading desks within a global financial technology team. The position involves developing scalable Java solutions, supporting production systems, and collaborating with international stakeholders and IT teams. Hybrid work from the Krakow office is required three days per week. 🗂️ Requirements: 3+ years of professional Java development experience, Knowledge of low-latency programming, Knowledge of multi-threaded programming, Strong problem-solving skills, Strong analytical skills, Ability to communicate technical concepts to non-technical stakeholders, Willingness to learn new technologies and adapt to market changes, English proficiency at B2 level or higher 📃 Skills: Java, Kafka, AVRO, Azure, AWS, GCP, Bloomberg, Tradeweb 🏢 Description: We are seeking a passionate Senior Java Developer to create innovative applications for Fixed Income Rates and Credit trading desks. You will deliver high-performance solutions while maintaining existing functionality as part of our global Fixed Income Rates and Credit markets technology team, a fast-paced, motivated group spread across 8 cities in 6 countries. Please note that working from the office in Krakow 3 days per week is required. Responsibilities - Architect and develop scalable Java applications for complex business challenges - Optimize and refactor existing components to improve performance and maintainability - Lead UAT and demonstration sessions with key stakeholders - Translation of business requirements into technical specifications - Collaboration with global IT teams to ensure seamless integration - Support production rollouts and provide ongoing maintenance - Development of cutting-edge solutions while maintaining a sophisticated, multi-faceted platform Requirements - 3+ years of professional Java development experience - Knowledge of low-latency and multi-threaded programming techniques - Excellent problem-solving and analytical skills - Strong communication skills, able to explain complex technical concepts to non-technical stakeholders - Willingness to learn and adapt to new technologies and market changes - English proficiency at B2 level or higher Nice to have - Understanding of financial markets, particularly Rates and Credit bonds/derivatives with trading platforms (e.g., Bloomberg, Tradeweb) - Familiarity with messaging systems like Kafka and data serialization formats (e.g., AVRO) - Knowledge of cloud platforms (Azure, AWS or GCP)

🏢 Summary: Senior Java Developer role focused on building and enhancing high‑performance, low‑latency front‑office trading systems for Commodities and FX markets. The position involves developing real‑time, front‑to‑back trading platforms covering pricing, execution, and risk management. Work includes delivering reliable, high‑throughput Java services within a global trading environment. 🗂️ Requirements: 5+ years of Java back-end development experience, Strong knowledge of HTTPS and REST APIs, Experience with microservices architecture, Experience with MQ systems, Proficiency in SQL, Experience with Postgres or Sybase, Understanding of high-availability architectures, Experience building low-latency, high-throughput systems, Experience delivering Java-based services 📃 Skills: Java, REST, HTTPS, Microservices, MQ, SQL, Postgres, Sybase, CI/CD, Agile, FX, Commodities 🏢 Description: Senior Java Developer– Commodities Trading B2B | Hybrid | Kraków | 2 days per week | Global Investment Bank We are supporting a global financial institution in hiring an experienced Senior Java Engineer for its Commodities technology team. The role focuses on building and improving front‑office trading systems used across global markets, with an emphasis on performance, reliability, and real‑time processing. Role Overview Develop and support front‑to‑back trading systems, including exchanges, client portals, and trade lifecycle components Build high‑performance Java services used across Commodities and FX trading Enhance and maintain low‑latency, high‑throughput electronic trading applications Deliver cross‑product front‑office platforms for pricing, execution, and risk management Contribute to real‑time risk capabilities across global trading workflows Required Experience 5+ years’ experience in Java back‑end development Strong knowledge of HTTPS, REST APIs, microservices, and MQ Proficiency in SQL and experience with Postgres or Sybase Understanding of high‑availability service architecture Experience owning or leading the delivery of Java‑based services Strong communication skills and ability to work with global teams Analytical approach, fast learner, and proactive in keeping technical skills current Ability to remain calm and effective in time‑sensitive situations Preferred Experience Exposure to production support Experience with Agile, CI/CD environments Domain knowledge in trade lifecycle, post‑trade, or FX/Commodities