Java Developer

🏢 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 applications for Fixed Income Rates and Credit trading desks in a global technology team. The position involves designing scalable Java solutions, improving low-latency systems, collaborating with stakeholders and global IT teams, and supporting production rollouts. Hybrid work from the Krakow office is required 3 days per week. 🗂️ Requirements: 5+ 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, Ability to adapt to new technologies and market changes, English proficiency at B2 level or higher 📃 Skills: Java, 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)

🏢 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: Java Developer role focused on building and optimizing scalable, high-performance applications for Fixed Income Rates and Credit trading desks within a global markets technology team. The position involves Java development, low-latency and multi-threaded programming, cross-functional collaboration, and production support in an international environment with hybrid work from Krakow. 🗂️ Requirements: 3+ years of professional Java development experience, Experience with low-latency programming, Experience with multi-threaded programming, Strong problem-solving and analytical skills, Ability to translate business requirements into technical specifications, Strong communication skills, English level B2 or higher, Availability to work from Krakow office 3 days per week 📃 Skills: Java, Kafka, AVRO, Azure, AWS, GCP, Bloomberg, Tradeweb 🏢 Description: We are hiring a Java Developer to deliver high-performance applications for Fixed Income Rates and Credit trading desks in a global markets tech team. You will build scalable Java services, improve existing components, and collaborate across 8 cities in 6 countries. Please note that working from the office in Krakow 3 days per week is required. Responsibilities - Design and develop scalable Java applications that solve complex business challenges - Improve and refactor existing components to increase performance and maintainability - Lead UAT activities and deliver demos for key stakeholders - Translate business requirements into clear technical specifications - Collaborate with global IT teams to ensure smooth integration - Support production releases and provide ongoing maintenance - Deliver modern solutions while preserving functionality across a sophisticated, multi-faceted platform Requirements - Hands-on experience with Java development, including 3+ years of professional work - Practical familiarity with low-latency techniques and multi-threaded programming approaches - Excellent problem-solving and analytical abilities - Strong communication skills, able to explain complex technical topics to non-technical stakeholders - Demonstrated eagerness to learn and adapt to new technologies and market changes - English proficiency at B2 (Upper-Intermediate) level or higher Nice to have - Knowledge of financial markets, especially Rates and Credit bonds/derivatives, and trading platforms such as Bloomberg and Tradeweb - Experience with messaging systems like Kafka and data serialization formats such as AVRO - Understanding of cloud platforms including Azure, AWS, or GCP

🏢 Summary: Java Developer role focused on building and improving mission-critical financial systems using Java and the ION toolset in a fast-paced international environment. The position involves low-latency application development, stakeholder collaboration, production support, and integration with trading platforms and messaging systems. Hybrid work with 3 office days per week is expected. 🗂️ Requirements: 2+ years of software engineering experience, Professional Java development experience, Experience with low-latency programming, Experience with multi-threaded systems, Knowledge of object-oriented programming, Understanding of design patterns, Experience working in agile teams, Knowledge of Rates and Credit bonds and derivatives, Understanding of Bloomberg and TradeWeb platforms, Experience with Kafka, English proficiency at B2 level or higher 📃 Skills: Java, ION, Kafka, OOP, Agile, Bloomberg, TradeWeb, Python, Perl, PXE 🏢 Description: We are seeking a Java Developer to become a valued addition to our team. You will join a talented engineering community that delivers mission-critical solutions powering worldwide business operations and fostering innovation within the financial sector. This role offers a great chance to leverage your skills in a fast-paced setting, partnering with international peers and stakeholders on meaningful initiatives. 3 days per week in the office is expected. Responsibilities - Architect and implement solutions to tackle major business challenges through Java application development or by making use of the ION toolset - Improve and restructure existing components and solutions to boost performance, maintainability, and overall code quality - Drive UAT and demonstration sessions with key stakeholders, facilitating clear communication and achieving successful approvals - Extract critical information from business stakeholders and convert it into well-defined, actionable IT requirements - Work closely with other IT teams across the globe to provide cohesive, end-to-end solutions - Assist the production operations team during deployments and contribute to ongoing production support tasks Requirements - Minimum of 2 years of professional experience in software engineering roles - Strong practical background in Java for the creation of reliable server-side applications - Sound grasp of low-latency and multi-threaded programming for performance-critical systems - Deep familiarity with object-oriented programming concepts and design patterns - Exposure to functional programming is viewed as a significant advantage - Demonstrated experience operating within agile teams and applying agile practices - Strong comprehension of Rates and Credit bonds and derivatives, together with their underlying market behavior - Thorough understanding of the specific characteristics of trading venues like Bloomberg and TradeWeb - Practical experience using Kafka for messaging and event-driven communication - Outstanding verbal and written communication abilities in English (B2+ level or above) Nice to have - General awareness of Financial Market Instruments and how they are utilized in trading contexts - Advanced, expert-level proficiency with ION and substantial prior experience using the ION toolset - Previous involvement in bond pricing through PXE - Background in automated testing methods and continuous integration workflows - Working knowledge of scripting languages such as Python, Perl, or comparable alternatives

🏢 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 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++. 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

🏢 Summary: Senior Java Developer role focused on building and optimizing enterprise trading systems in the financial domain using Java and related enterprise technologies. The position involves designing software components, improving platform standardization, supporting migration initiatives, and collaborating with global IT teams. Candidates should have strong Core Java, SQL, and Spring expertise with experience in enterprise-scale software development. 🗂️ Requirements: 5+ years of software development experience, Strong Core Java knowledge, Proficiency in SQL, Experience with Spring, Strong written and verbal English, Good communication skills, Time management skills, Team-oriented approach 📃 Skills: Java, SQL, Spring, JMS, ORM, REST, WebServices, TCP/IP, Bash, Perl, Python, C++, Redis, Scrum, Kanban 🏢 Description: We are seeking a Senior Java Developer to join a leader in the financial domain who has been successfully involved in trading financial (Fixed income) products for many years. As part of this, a globally distributed, component-based IT system has been built. It is written mainly in Java and incorporates many enterprise technologies and standards, including JMS, ORM, Spring, WebServices, and REST, while also integrating technologies such as TCP/IP networking, bash scripting, Perl, Python, and C++. Responsibilities - Design and implement software components according to requirements - Take responsibility for ensuring the delivery and quality standards of software - Spend time with the customer to determine and understand deliverables - Support business in platform rationalization and optimization - Continue removing technical debt and platform standardization - Support business in migration to strategic platform - Work with other IT teams across the globe Requirements - At least 5 years of working experience in software development - Strong knowledge of Core Java - Proficiency in SQL and Spring framework - Good communication and time management skills - Team player mentality with a pragmatic approach to software development - Strong written and verbal English Nice to have - Skills in multithreading, networking and web services in Java - Familiarity with JMS and Redis - Capability to acquire and capture requirements with attention to software quality - Understanding of investment banking domain - Understanding of Agile principles, including Scrum or Kanban

🏢 Summary: Senior Java Developer role focused on building and improving high-performance financial systems and trading solutions in a global environment. The position involves backend Java development, stakeholder collaboration, and integration with trading platforms and event-driven technologies. Hybrid work with 3 days per week in the office is expected. 🗂️ Requirements: 3+ years of commercial software development experience, Strong Java backend development experience, Knowledge of low-latency and multi-threaded systems, Understanding of object-oriented programming and design patterns, Experience working in agile teams, Knowledge of Rates and Credit bonds and derivatives, Understanding of Bloomberg and TradeWeb trading venues, Hands-on experience with Kafka, English proficiency at B2 level or higher 📃 Skills: Java, Kafka, ION, Bloomberg, TradeWeb, Python, Perl, PXE, OOP, Agile 🏢 Description: We are looking for a Senior Java Developer to join our team. You will become part of a skilled engineering group working on critical solutions that support our global business operations and drive innovation in the financial domain. This is an excellent opportunity to apply your expertise in a dynamic environment, working closely with international colleagues and stakeholders on impactful projects. 3 days per week in our office is expected. Responsibilities - Design and build solutions that address key business challenges, either by developing Java applications or leveraging the ION toolset - Refactor and enhance existing components and solutions to improve performance, maintainability, and overall quality - Lead UAT and demonstration sessions with key stakeholders, ensuring smooth communication and successful sign-off - Gather essential information from business stakeholders and translate it into clear, concise IT requirements - Collaborate effectively with other global IT teams to deliver integrated, end-to-end solutions - Support the production operations team during rollouts and provide assistance with production support activities Requirements - At least 3 years of relevant commercial experience in software development - Solid hands-on experience with Java for building robust backend applications - Good understanding of low-latency, multi-threaded code development for high-performance systems - Strong knowledge of object-oriented programming principles and design patterns, with exposure to functional programming considered a strong plus - Practical experience working within agile teams and following agile methodologies - Solid understanding of Rates and Credit bonds and derivatives, along with their market dynamics - Detailed knowledge of the nuances of trading venues such as Bloomberg and TradeWeb - Hands-on experience with Kafka for event streaming and messaging - Excellent oral and written communication skills in English (B2+ level or higher) Nice to have - Broader familiarity with Financial Market Instruments and their application in trading environments - Expert-level knowledge of ION and prior hands-on experience working with the ION toolset - Previous experience with bond pricing using PXE - Experience with automated testing practices and continuous integration pipelines - Proficiency in scripting languages such as Python, Perl, or similar

🏢 Summary: Senior Java Developer role focused on building and optimizing ultra-low-latency, high-performance trading systems. The position involves developing core server-side components, enhancing scalability, and driving cloud transformation within a financial trading platform. Work includes performance tuning, microservices development, and system optimization in a production trading environment. 🗂️ Requirements: 3+ years Java development experience (Java 8/11), Strong Core Java knowledge, Experience with J2EE architecture, Understanding of OOP principles, Knowledge of JVM and JNI, Experience with Maven, Advanced multithreading and concurrency, Asynchronous programming, Shared memory concepts, Garbage Collection optimization, Memory management, Experience with microservices architecture, REST API development, Performance tuning and benchmarking, Capacity testing, Knowledge of data structures and complexity analysis, Hands-on experience with IntelliJ IDEA, Experience in financial services or trading systems, Working knowledge of Agile/Scrum, Understanding of CI/CD practices 📃 Skills: Java, J2EE, JVM, JNI, Maven, Multithreading, Concurrency, Asynchronous, HashMap, Microservices, REST, GarbageCollection, MemoryManagement, Benchmarking, IntelliJ, Agile, Scrum, CI/CD, DataStructures 🏢 Description: We are looking for a Senior-level Java Developer to work on server-side development for a high-performance trading platform. You'll be responsible for building, optimizing, and enhancing core application logic focused on ultra-low-latency processing and seamless scalability. The project involves transforming financial information systems to modern cloud-based architecture while maintaining the highest standards of performance and reliability. Our Client is a leading global financial markets company specializing in derivatives trading and market infrastructure, operating one of the world's largest and most diverse derivatives marketplaces. This position offers remote work within Poland and work in the US Central Time (2 pm-10 pm). Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Design and develop robust Java applications using Core Java (8/11) with J2EE Architecture Build and maintain a microservices architecture with REST APIs Conduct performance tuning through benchmarking and capacity testing to identify system bottlenecks Optimize applications for high throughput by managing memory allocation and Java runtime options Minimize Garbage Collection impact and develop resource-efficient code Monitor and optimize system performance, including memory utilization, CPU usage, disk I/O, and system load Participate in code reviews and ensure adherence to development best practices Collaborate with cross-functional teams in an Agile/Scrum environment Support Google Cloud Platform transformation initiatives Solve complex technical problems creatively and communicate solutions effectively Provide L3 technical support for system components when required Lead and mentor team members to achieve critical project objectives Requirements Minimum 3+ years of hands-on Java development experience (Java 8 or 11) Strong understanding of Java core concepts: OOP, JVM, JNI, Maven Proficiency in advanced Java features: Multithreading, HashMap, Asynchronous programming, Concurrency, Shared memory Experience with Garbage Collection optimization and memory management Hands-on experience with IntelliJ IDEA development environment Deep knowledge of data structures and their performance characteristics (time and space complexity) Proven experience in financial services or trading desk environments Working knowledge of Agile/Scrum methodologies and CI/CD practices Strong analytical and problem-solving skills Ability to adapt quickly to dynamic work environments and make independent decisions Self-motivated individual who thrives in fast-paced, challenging environments Comfortable working both independently and as part of collaborative teams Excellent verbal and written communication skills in English (B2+ level) Strong team collaboration and interpersonal skills Nice to have Experience with Google Cloud Platform (GCP) Knowledge of containerization technologies, including Docker and Docker Swarm Manager Familiarity with the Kubernetes orchestration platform Experience with Jenkins for continuous integration and deployment Knowledge of Ansible for configuration management and automation Understanding of cloud-native development practices Experience with performance monitoring and observability tools 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.