Senior Microservices Developer – Java & Spring Boot

🏢 Summary: Krakow-based hybrid opportunity for a Senior Java Microservices Developer to build AI-enabled financial platforms in the financial services sector. The role focuses on designing and delivering secure, scalable Java microservices with GenAI enhancements to support global collateral and facility management solutions. You will contribute to architecture, CI/CD, security-by-design, and cloud-native deployments in an enterprise environment. 🗂️ Requirements: 4+ years of experience building Java microservices with Spring Boot in enterprise environments, Strong expertise in RDBMS (Oracle or PostgreSQL), schema design, performance tuning, transactional integrity, Experience with unit and integration testing (JUnit, Mockito, Testcontainers, API/contract testing), Experience with CI/CD pipelines and quality gates (Jenkins, GitLab, Sonar, SAST/DAST, dependency scanning), Understanding of REST, messaging/eventing, API design, versioning strategies, Hands-on experience with GCP, Practical knowledge of GenAI concepts, LLMs, RAG, agent patterns, and governance, Fluent English (verbal and written), Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, Oracle, PostgreSQL, SQL, JUnit, Mockito, Testcontainers, REST, API, Jenkins, GitLab, Sonar, SAST, DAST, GCP, GenAI, LLM, RAG, Kubernetes, Docker 🏢 Description: Unleash innovation — develop AI-enabled financial platforms that redefine operational excellence. Krakow-based opportunity with hybrid work model (up to 2 remote days per week). As a Senior Java Microservices Developer , you will be working for our client in the financial services industry, delivering cutting-edge collateral and facility management solutions. You will contribute to building scalable, secure, and resilient microservice architectures that incorporate AI-driven enhancements, supporting global financial operations and innovation. Your main responsibilities: Build, test, release, and support Java microservices (Spring Boot) in enterprise environments, ensuring high standards of security, performance, and operational resilience. Contribute to solution design for microservices and integration patterns, aligning with target architecture and non-functional requirements. Identify and resolve technical risks, dependencies, and delivery blockers collaboratively with delivery teams. Follow and enhance engineering standards, including CI/CD practices, testing strategies, and security protocols. Participate in technical reviews such as design, code, and security reviews, remediating findings efficiently. Use AI-assisted tooling (e.g., Copilot) responsibly to accelerate delivery while maintaining code quality and security. Apply GenAI techniques (LLMs, RAG, agent workflows) in development and architecture, adhering to governance and controls. Embed security-by-design principles, vulnerability management, and compliance into everyday development. Support deployment activities, environment readiness, and smooth release cycles. Collaborate closely with cross-disciplinary teams including architects, QA, SRE, and system owners. Foster a culture of continuous improvement, inclusive collaboration, and shared accountability. You're ideal for this role if you have: 4+ years of experience building Java microservices (Spring Boot) within enterprise environments. Solid expertise with RDBMS (Oracle/PostgreSQL), schema design, performance tuning, and transactional integrity. Proven experience with unit and integration testing (JUnit, Mockito, Testcontainers, API/contract testing). Familiarity with CI/CD pipelines and quality gates (Jenkins, GitLab, Sonar, SAST/DAST, dependency scanning). Good understanding of REST, messaging/eventing, API design, and versioning strategies. Hands-on experience with cloud platforms, specifically GCP. Practical knowledge of GenAI concepts, LLMs, RAG/agent patterns, and related governance. Ability to design pragmatic solutions under delivery pressure. It is a strong plus if you have: Experience delivering regulated financial services platforms with focused audit and control requirements. Exposure to cloud-native patterns (containers, Kubernetes, service mesh) and modern observability tooling. Background in performance engineering and resilience testing. Prior experience implementing AI-enabled SDLC practices for measurable productivity. Language Required for the role: Fluent English (verbal and written). Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Microservices Developer role focused on building and integrating enterprise-grade microservices for an AI-powered financial platform. The position involves designing, developing, and supporting scalable services while embedding security, CI/CD, and quality engineering best practices. Hybrid work model with strong emphasis on GenAI-enabled engineering and cloud-based solutions. 🗂️ Requirements: 4+ years of experience building Java microservices in enterprise environments, Strong expertise with RDBMS (Oracle or PostgreSQL) including schema design and performance tuning, Experience with unit and integration testing frameworks (JUnit, Mockito, Testcontainers), Solid understanding of CI/CD tools (Jenkins, GitLab), code quality gates, and security practices, Knowledge of API design, REST, messaging/eventing, and versioning strategies, Practical experience with GCP cloud environments, Familiarity with GenAI concepts including LLMs, RAG, and agent workflows, Fluent English, Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, Oracle, PostgreSQL, JUnit, Mockito, Testcontainers, Jenkins, GitLab, Sonar, REST, GCP, LLM, RAG, Kubernetes, Containers 🏢 Description: Unleash innovation in financial technology — drive AI-powered transformation with cutting-edge microservices! Krakow-based opportunity with hybrid work model (up to 2 remote days per week). As a Senior Java Microservices Developer , you will be working for our client, a leading financial technology company delivering global collateral and facility management solutions. This role focuses on building and integrating enterprise-grade microservices for a transformative platform that leverages AI to optimize processes, reduce costs, and enhance delivery speed. Join a forward-thinking team committed to engineering excellence and digital innovation. Your main responsibilities: Build, test, release, and support Java microservices and related components for multiple product areas/services. Contribute to solution design for microservices and integration patterns, ensuring alignment with architecture and non-functional requirements. Identify and resolve technical risks, dependencies, and delivery blockers in collaboration with cross-functional teams. Follow and promote engineering standards including coding practices, CI/CD pipelines, and testing strategies. Develop comprehensive unit, integration, and contract tests to ensure high-quality deliverables. Engage in technical reviews and address findings promptly. Utilize AI-assisted tooling responsibly to accelerate development while safeguarding code quality, security, and intellectual property. Contribute to GenAI-enabled engineering patterns, including LLMs, RAG, and agent workflows. Embed security-by-design principles and ensure compliance with internal controls. Support release activities, environment readiness, and seamless cutovers. Collaborate closely with technical leads, engineers, QA, operations, and system owners to promote best practices. Foster a culture of continuous improvement, teamwork, and shared accountability. You're ideal for this role if you have: 4+ years of hands-on experience building Java microservices (e.g., Spring Boot) in enterprise environments. Strong expertise with RDBMS such as Oracle or PostgreSQL, including schema design and performance tuning. Proven experience with unit and integration testing frameworks like JUnit, Mockito, Testcontainers. Solid understanding of CI/CD tools (Jenkins, GitLab), quality gates (Sonar), and security practices. Knowledge of API design, REST, messaging/eventing, and versioning strategies. Practical experience in cloud environments (GCP). Familiarity with GenAI concepts, tools, and governance including LLMs, RAG, and agent workflows. Ability to contribute to technical design and make pragmatic decisions under delivery pressure. It is a strong plus if you have: Experience in delivering regulated financial services platforms, with audit and control requirements. Exposure to cloud-native patterns (containers, Kubernetes, service mesh). Familiarity with performance engineering and resilience testing. Hands-on experience with AI-enabled SDLC practices and governance. Practical knowledge of GenAI prototyping, RAG pipelines, or prompt management. Language Required for the role: Fluent English (command of the language required). Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Microservices Developer role focused on building, maintaining, and modernizing enterprise-grade Java systems in a hybrid work model. The position involves developing scalable microservices, integrating distributed systems, and upgrading legacy applications within complex enterprise environments. You will contribute to secure, high-performance solutions supporting large-scale digital transformation initiatives. 🗂️ Requirements: Minimum 5 years of experience in Java development, Commercial experience with Java 8+, Strong experience with Spring and SpringBoot, Experience with microservices architecture, Experience with REST and SOAP integrations, Knowledge of SQL and Oracle databases, Experience with Tomcat or similar application servers, Knowledge of TLS/mTLS and secure communication mechanisms, Experience with Maven or Gradle, Experience with Git version control, Ability to write Bash or CMD scripts, Experience working with legacy codebases, Communicative proficiency in Polish 📃 Skills: Java, Spring, SpringBoot, SQL, Oracle, Microservices, REST, SOAP, Tomcat, TLS, mTLS, Maven, Gradle, Git, Bash, CMD, UML, SOAPUI, Postman, Queues 🏢 Description: Ignite innovation — shape the future of enterprise systems! Warszawa-based opportunity with hybrid work model (up to 4 remote days per week). As a Senior Java Microservices Developer , you will be working for our client, a leading player in the IT industry committed to building scalable, secure, and efficient enterprise solutions. You will contribute to the development and maintenance of complex Java-based systems, driving digital transformation and supporting business agility in a dynamic environment. This role offers new challenges for career growth and impactful projects for global enterprise success. Your main responsibilities: Develop and maintain Java applications (Java 8+) within microservices architecture, ensuring high performance and scalability Collaborate on system enhancements, integrating new features based on detailed business requirements Design and implement solutions using Spring (including older versions) and Spring Boot, adhering to best practices Work on system integration using REST, SOAP, and message queuing systems, ensuring robust and secure communication Contribute to system migration initiatives, upgrading stacks to newer frameworks and technologies Document system designs with UML diagrams and other notation standards to support development and integration efforts Engage in troubleshooting, optimizing, and extending existing legacy codebases, maintaining high code quality You're ideal for this role if you have: At least 5 years of professional experience in Java development within enterprise environments Strong proficiency in Java, including working with legacy codebases Extensive experience with Spring framework (any version) and Spring Boot Solid SQL knowledge and experience with database systems like Oracle Hands-on experience with microservices architecture and monolithic systems on application servers like Tomcat Familiarity with distributed systems architecture and system integration (REST, SOAP, queues) Knowledge of security mechanisms such as TLS/mTLS, certificates, and encrypted connections Working experience with Maven, Gradle, Git, and tools like SOAP UI, POSTMAN Ability to write bash or cmd scripts for automation tasks It is a strong plus if you have: (optional) PLSQL knowledge Familiarity with JSF, JSP, or C++ Experience with Ansible or other automation tools Insights into system security best practices Ability to interpret BPMN and UML standards, with problem-solving skills related to new feature development Language Required for the role: Polish (Communicative proficiency) #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Spring Boot Backend Developer role focused on building and modernizing a cloud-native Messaging Delivery Platform in the financial sector. The position involves designing and developing scalable microservices, APIs, and distributed systems deployed on Kubernetes and AWS. You will contribute to high-quality backend solutions within an Agile environment using modern DevOps and cloud practices. 🗂️ Requirements: Minimum 6 years of commercial experience in Java development, Strong hands-on experience with Spring Boot, Practical experience in microservices architecture, Experience with Kubernetes and AWS cloud environments, Proficiency with CI/CD tools: Jenkins, GitHub, Maven, Groovy, Strong knowledge of API design: Swagger, OpenAPI, REST, JSON, Experience with OAuth2 and API Gateway solutions such as Kong, Experience with unit testing and TDD practices, Knowledge of Agile methodologies, especially Scrum, Fluent English, Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, Microservices, Kubernetes, AWS, Jenkins, GitHub, Maven, Groovy, Swagger, OpenAPI, REST, JSON, OAuth2, Kong, Docker, CICD, TDD, Scrum 🏢 Description: Unleash innovation at scale — drive the future of cloud-native, microservices architectures! Krakow-based opportunity with hybrid work model (3 remote days per week). As a Senior Java Spring Boot Backend Developer , you will be working for our client in the financial industry, focusing on the Messaging Delivery Platform—centralizing and modernizing message delivery to bank customers across multiple channels. Join a cutting-edge project that shapes the future of client communication through advanced distributed systems and cloud technology. Your main responsibilities: Develop high-quality, scalable backend applications using Java and Spring Boot, ensuring adherence to technical requirements and standards. Collaborate within a multidisciplinary Agile team to design, build, and enhance distributed microservices architectures. Implement and monitor API solutions using Swagger, OpenAPI, REST, and JSON standards, ensuring best practices. Deploy and manage containerized applications on Kubernetes, leveraging AWS cloud infrastructure. Integrate authentication and authorization mechanisms such as OAuth 2 and API Gateway solutions. Write and execute unit tests, contribute to automation testing efforts, and uphold quality benchmarks. Participate in code reviews, challenge implementations to maintain highest quality standards, and promote innovation. Keep abreast of current technologies, tools, and industry best practices, continuously enhancing your expertise. Support and mentor team members to foster a culture of technical excellence and knowledge sharing. You're ideal for this role if you have: Minimum 6 years of experience in Java development within a senior or expert capacity. Strong hands-on expertise with Spring Boot framework and microservices architecture. Practical experience with Kubernetes and Cloud environments, particularly AWS. Proficiency with CI/CD tools such as Jenkins, GitHub, Maven, and Groovy scripting. Deep understanding of API design principles, including Swagger, OpenAPI 3.0, REST, and JSON. Familiarity with authentication protocols like OAuth 2 and API Gateway solutions such as Kong. Robust knowledge of Agile practices, especially TDD and Scrum methodologies. Ability to work fluently in English, with excellent communication skills. It is a strong plus if you have: Certifications or additional experience with AWS services. Knowledge of automation testing frameworks. Experience with messaging systems or middleware. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Spring Boot Backend Developer role focused on building and modernizing a cloud-native Messaging Delivery Platform in the financial sector. The position involves designing and developing scalable microservices, APIs, and distributed systems deployed on Kubernetes and AWS. You will work in an Agile team to deliver secure, high-quality backend solutions for multi-channel customer communication. 🗂️ Requirements: Minimum 6 years of Java development experience, Strong hands-on experience with Spring Boot, Experience designing microservices architectures, Practical experience with Kubernetes, Experience with AWS cloud environments, Proficiency with CI/CD tools (Jenkins, GitHub, Maven, Groovy), Strong knowledge of API design (Swagger, OpenAPI, REST, JSON), Experience with OAuth2 and API Gateway solutions (Kong), Experience with TDD and Scrum methodologies, Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, Microservices, Kubernetes, AWS, Jenkins, GitHub, Maven, Groovy, Swagger, OpenAPI, REST, JSON, OAuth2, Kong, CICD, TDD, Scrum, API 🏢 Description: Unleash innovation at scale — drive the future of cloud-native, microservices architectures! Krakow-based opportunity with hybrid work model (3 remote days per week). As a Senior Java Spring Boot Backend Developer , you will be working for our client in the financial industry, focusing on the Messaging Delivery Platform—centralizing and modernizing message delivery to bank customers across multiple channels. Join a cutting-edge project that shapes the future of client communication through advanced distributed systems and cloud technology. Your main responsibilities: Develop high-quality, scalable backend applications using Java and Spring Boot, ensuring adherence to technical requirements and standards. Collaborate within a multidisciplinary Agile team to design, build, and enhance distributed microservices architectures. Implement and monitor API solutions using Swagger, OpenAPI, REST, and JSON standards, ensuring best practices. Deploy and manage containerized applications on Kubernetes, leveraging AWS cloud infrastructure. Integrate authentication and authorization mechanisms such as OAuth 2 and API Gateway solutions. Write and execute unit tests, contribute to automation testing efforts, and uphold quality benchmarks. Participate in code reviews, challenge implementations to maintain highest quality standards, and promote innovation. Keep abreast of current technologies, tools, and industry best practices, continuously enhancing your expertise. Support and mentor team members to foster a culture of technical excellence and knowledge sharing. You're ideal for this role if you have: Minimum 6 years of experience in Java development within a senior or expert capacity. Strong hands-on expertise with Spring Boot framework and microservices architecture. Practical experience with Kubernetes and Cloud environments, particularly AWS. Proficiency with CI/CD tools such as Jenkins, GitHub, Maven, and Groovy scripting. Deep understanding of API design principles, including Swagger, OpenAPI 3.0, REST, and JSON. Familiarity with authentication protocols like OAuth 2 and API Gateway solutions such as Kong. Robust knowledge of Agile practices, especially TDD and Scrum methodologies. Ability to work fluently in English, with excellent communication skills. It is a strong plus if you have: Certifications or additional experience with AWS services. Knowledge of automation testing frameworks. Experience with messaging systems or middleware. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Spring Boot Backend Developer role focused on building and modernizing a cloud-native Messaging Delivery Platform in the financial sector. The position involves developing scalable microservices, APIs, and containerized applications deployed on AWS using Kubernetes. It combines hands-on backend engineering with DevOps practices in an Agile environment. 🗂️ Requirements: Minimum 6 years of Java development experience, Strong hands-on experience with Spring Boot, Experience with microservices architecture, Practical experience with Kubernetes, Experience with AWS cloud environment, Experience with CI/CD tools (Jenkins, GitHub, Maven, Groovy), Strong knowledge of API design (REST, Swagger, OpenAPI, JSON), Experience with OAuth2 and API Gateway solutions, Experience working in Agile (Scrum, TDD), Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, Microservices, Kubernetes, AWS, Jenkins, GitHub, Maven, Groovy, REST, Swagger, OpenAPI, JSON, OAuth2, Kong, CI/CD, TDD, Scrum 🏢 Description: Unleash innovation at scale — drive the future of cloud-native, microservices architectures! Krakow-based opportunity with hybrid work model (3 remote days per week). As a Senior Java Spring Boot Backend Developer , you will be working for our client in the financial industry, focusing on the Messaging Delivery Platform—centralizing and modernizing message delivery to bank customers across multiple channels. Join a cutting-edge project that shapes the future of client communication through advanced distributed systems and cloud technology. Your main responsibilities: Develop high-quality, scalable backend applications using Java and Spring Boot, ensuring adherence to technical requirements and standards. Collaborate within a multidisciplinary Agile team to design, build, and enhance distributed microservices architectures. Implement and monitor API solutions using Swagger, OpenAPI, REST, and JSON standards, ensuring best practices. Deploy and manage containerized applications on Kubernetes, leveraging AWS cloud infrastructure. Integrate authentication and authorization mechanisms such as OAuth 2 and API Gateway solutions. Write and execute unit tests, contribute to automation testing efforts, and uphold quality benchmarks. Participate in code reviews, challenge implementations to maintain highest quality standards, and promote innovation. Keep abreast of current technologies, tools, and industry best practices, continuously enhancing your expertise. Support and mentor team members to foster a culture of technical excellence and knowledge sharing. You're ideal for this role if you have: Minimum 6 years of experience in Java development within a senior or expert capacity. Strong hands-on expertise with Spring Boot framework and microservices architecture. Practical experience with Kubernetes and Cloud environments, particularly AWS. Proficiency with CI/CD tools such as Jenkins, GitHub, Maven, and Groovy scripting. Deep understanding of API design principles, including Swagger, OpenAPI 3.0, REST, and JSON. Familiarity with authentication protocols like OAuth 2 and API Gateway solutions such as Kong. Robust knowledge of Agile practices, especially TDD and Scrum methodologies. Ability to work fluently in English, with excellent communication skills. It is a strong plus if you have: Certifications or additional experience with AWS services. Knowledge of automation testing frameworks. Experience with messaging systems or middleware. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Software Engineer role focused on modernizing legacy banking applications and developing microservices for financial transaction and regulatory reporting platforms. The position involves designing Java 17 and Spring Boot solutions, improving observability, and collaborating with global teams in a hybrid Krakow-based work model. 🗂️ Requirements: 5+ years of experience developing and supporting distributed Java systems, Experience designing microservices, Strong knowledge of Java 17, Experience with Spring Boot, Experience with Java frameworks, Experience with DevOps tools, Experience with JIRA, Experience with Confluence, Experience with Ansible, Experience with CI/CD pipelines, Knowledge of REST APIs, Experience with Spring Cloud, Experience with GCP, Experience with Redis, Fluent English, Legal right to work in Europe 📃 Skills: Java, Spring, SpringBoot, Microservices, REST, SpringCloud, GCP, Redis, Ansible, JIRA, Confluence, CI/CD, GitHub, Claude, Angular 🏢 Description: Empower innovation at the forefront of cloud and microservices — shape the future of banking technology. Krakow-based opportunity with hybrid work model (up to 3 remote days per week). As a Senior Java Software Engineer , you will be working for our client, a global financial services leader dedicated to transforming banking through cutting-edge IT solutions. You’ll contribute to the modernization of legacy Java applications, supporting high-impact financial transactions and regulatory reporting platforms. This role offers you the chance to be part of a dynamic team driving digital innovation and operational excellence. Your main responsibilities: Actively participate in incident, problem, and service management activities, ensuring continuous service delivery. Evergreen legacy Java applications leveraging Github Co-Pilot, Claude Code, and other modern tools. Collaborate closely with business product owners, IT specialists, architects, and management to analyze and translate requirements into technical solutions. Design and develop robust microservices using Java 17 and Spring Boot within an Agile environment. Create observability solutions for monitoring, alerting, incident response, and capacity management, ensuring high system reliability. You're ideal for this role if you have: 5+ years of experience in developing and supporting distributed Java systems. Strong expertise in designing microservices with Java 17 and Spring Boot. Experience with Java frameworks, DevOps tools, and application lifecycle management (e.g., JIRA/Confluence, Ansible, CI/CD pipelines). Proficient in REST APIs, Spring Cloud, GCP, Redis, and related technologies. Excellent analytical and communication skills, capable of working across regions with a global perspective. It is a strong plus if you have: (optional) Knowledge of Angular, vulnerability remediation, or related cloud technologies. Language required for the role: Fluent English, with strong communication skills. Eligibility to work in: Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Developer role focused on designing, building, and operating scalable fintech backend systems handling high-volume transactions. The position involves developing Java/Spring Boot microservices, scalable APIs, and distributed architectures in cloud environments. You will collaborate with international teams to deliver reliable, production-grade financial platforms. 🗂️ Requirements: 3–5 years of backend development experience, Strong experience with Java and Spring Boot in production, Experience building scalable backend services and APIs, Strong knowledge of SQL and NoSQL databases, Understanding of microservices architecture and distributed systems, Experience with asynchronous processing, Experience across full SDLC, Experience with AWS or Azure cloud environments, Professional English communication skills 📃 Skills: Java, Spring, SpringBoot, Microservices, SQL, NoSQL, PostgreSQL, MySQL, MongoDB, AWS, Azure, REST, APIs 🏢 Description: Senior Java Developer (Java, Spring Boot, Microservices) Position Overview We are looking for a Senior Java Developer to join our team in Poland and contribute to the development of highly scalable fintech systems supporting trillions of dollars in transactions annually . In this role, you will work closely with the US-based product and engineering teams , helping to design, build, and operate backend services for programmable payment, trading, and settlement platforms. You will report directly to the Software Manager in Poland. A key requirement is excellent English communication skills and strong soft skills — we are looking for someone eloquent, outgoing, friendly, and confident in collaboration . Responsibilities Design and develop backend architecture for fintech products and platforms. Build, maintain, and operate high-performance Java / Spring Boot microservices running in production environments. Develop scalable APIs and backend workflows with strong emphasis on data consistency, fault tolerance, and reliability . Own features end-to-end: from implementation through deployment and production support. Debug and resolve complex issues in distributed systems and high-volume production environments. Work closely with US-based teams to translate product requirements into robust backend solutions. Write clean, maintainable code and contribute to technical documentation, diagrams, and system workflows. Participate in code reviews and continuously improve backend quality and engineering standards. Requirements 3–5 years of professional backend development experience. Strong hands-on experience with Java and Spring Boot in production systems. Proven experience building and maintaining backend services and APIs at scale. Solid understanding of SQL and NoSQL databases (e.g., PostgreSQL/MySQL, MongoDB). Knowledge of microservices architecture, distributed systems, and asynchronous processing. Experience across full SDLC: architecture, development, testing, deployment, and maintenance. Experience operating systems in cloud environments such as AWS or Azure . Excellent communication skills in English . Nice to Have Experience with Spring AI . Previous exposure to banking, payments, trading, or financial transaction systems. Degree in Computer Science or equivalent practical experience. Personal Attributes Highly hands-on engineer who enjoys owning production-grade code. Comfortable working in a fast-paced, startup or high-growth environment. Strong analytical thinking, problem-solving ability, and attention to detail. Clear communicator, confident in collaborating with international teams. Friendly, proactive, and motivated to grow with the company and product.

🏢 Summary: Senior Java Developer role focused on designing, building, and operating scalable fintech backend systems using Java and Spring Boot in cloud environments. The position involves developing high-performance microservices and APIs for payment, trading, and settlement platforms, with end-to-end ownership from architecture to production support. The role requires close collaboration with international teams and ensuring reliability, consistency, and fault tolerance in distributed systems. 🗂️ Requirements: 3–5 years backend development experience, Strong experience with Java, Strong experience with Spring Boot, Experience building scalable backend services and APIs, Knowledge of SQL and NoSQL databases, Understanding of microservices architecture, Understanding of distributed systems, Experience with asynchronous processing, Experience across full SDLC, Experience with AWS or Azure, Professional English proficiency 📃 Skills: Java, SpringBoot, Microservices, SQL, NoSQL, PostgreSQL, MySQL, MongoDB, AWS, Azure, REST, APIs, SDLC, DistributedSystems, AsynchronousProcessing 🏢 Description: Senior Java Developer (Java, Spring Boot, Microservices) Position Overview We are looking for a Senior Java Developer to join our team in Poland and contribute to the development of highly scalable fintech systems supporting trillions of dollars in transactions annually . In this role, you will work closely with the US-based product and engineering teams , helping to design, build, and operate backend services for programmable payment, trading, and settlement platforms. You will report directly to the Software Manager in Poland. A key requirement is excellent English communication skills and strong soft skills — we are looking for someone eloquent, outgoing, friendly, and confident in collaboration . Responsibilities Design and develop backend architecture for fintech products and platforms. Build, maintain, and operate high-performance Java / Spring Boot microservices running in production environments. Develop scalable APIs and backend workflows with strong emphasis on data consistency, fault tolerance, and reliability . Own features end-to-end: from implementation through deployment and production support. Debug and resolve complex issues in distributed systems and high-volume production environments. Work closely with US-based teams to translate product requirements into robust backend solutions. Write clean, maintainable code and contribute to technical documentation, diagrams, and system workflows. Participate in code reviews and continuously improve backend quality and engineering standards. Requirements 3–5 years of professional backend development experience. Strong hands-on experience with Java and Spring Boot in production systems. Proven experience building and maintaining backend services and APIs at scale. Solid understanding of SQL and NoSQL databases (e.g., PostgreSQL/MySQL, MongoDB). Knowledge of microservices architecture, distributed systems, and asynchronous processing. Experience across full SDLC: architecture, development, testing, deployment, and maintenance. Experience operating systems in cloud environments such as AWS or Azure . Excellent communication skills in English . Nice to Have Experience with Spring AI . Previous exposure to banking, payments, trading, or financial transaction systems. Degree in Computer Science or equivalent practical experience. Personal Attributes Highly hands-on engineer who enjoys owning production-grade code. Comfortable working in a fast-paced, startup or high-growth environment. Strong analytical thinking, problem-solving ability, and attention to detail. Clear communicator, confident in collaborating with international teams. Friendly, proactive, and motivated to grow with the company and product.

🏢 Summary: Mid-Level Java Microservices Developer role focused on building AI-enabled microservices for a global collateral and facility management platform in the financial sector. The position involves designing, developing, testing, and securing scalable cloud-based solutions using modern engineering and GenAI practices. Hybrid work model based in Krakow. 🗂️ Requirements: 4+ years experience developing Java microservices, Experience with Spring Boot in enterprise environments, Strong knowledge of RDBMS and SQL performance tuning, Experience with unit and integration testing, Experience with CI/CD pipelines and quality gates, Knowledge of REST APIs and event-driven architectures, Experience with cloud platforms, particularly GCP, Familiarity with GenAI concepts including LLMs and RAG, Communicative English, Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, SQL, Oracle, PostgreSQL, JUnit, Mockito, Testcontainers, Jenkins, GitLab, Sonar, SAST, DAST, REST, GCP, LLM, RAG, Kubernetes, Docker 🏢 Description: Ignite innovation in financial technology — develop AI-enabled microservices that transform the banking landscape! Krakow-based opportunity with hybrid work model (up to 3 remote days per week). As a Mid-Level Java Microservices Developer , you will be working for our client, a leading financial technology firm. You will play a pivotal role in delivering a cutting-edge global collateral and facility management platform aimed at reducing costs and accelerating delivery through an AI-enabled SDLC. Join a forward-thinking team dedicated to redefining financial services with innovative solutions, AI integration, and best engineering practices to elevate the industry’s future. Your main responsibilities: Build, test, and support Java microservices (Spring Boot) and related components to ensure scalable, secure, and resilient solutions. Contribute to designing solutions for microservices integrations, aligning with architecture and operational requirements. Identify, escalate, and resolve technical risks, dependencies, and delivery blockers in collaboration with cross-functional teams. Follow and enhance engineering standards: coding practices, CI/CD pipelines, testing strategies, and security protocols. Deliver comprehensive unit, integration, and contract testing to meet quality standards. Participate in technical reviews, security assessments, and remediation efforts. Use AI-assisted tooling responsibly to accelerate development while maintaining code quality, security, and compliance. Apply guardrails for AI-generated code, ensuring strong review discipline and traceability. Contribute to GenAI-enabled engineering patterns such as RAG, LLMs, and agent workflows. Embed security-by-design principles and build observability into production services for operational readiness. Support release activities, environment setups, and cutover planning. Collaborate closely with diverse teams—including Tech Leads, architects, QA, platform specialists, and SREs—to deliver integrated outcomes. Foster a culture of continuous improvement and shared accountability. You're ideal for this role if you have: 4+ years of hands-on experience developing Java microservices (preferably with Spring Boot) in enterprise environments. Strong understanding of RDBMS, such as Oracle or PostgreSQL, including schema design and performance tuning. Experience with unit and integration testing frameworks (JUnit, Mockito, Testcontainers). Proficiency with CI/CD pipelines and quality gates (Jenkins or GitLab, Sonar, SAST/DAST). Good knowledge of REST APIs, messaging, event-driven patterns, and API versioning. Practical experience working on cloud platforms, particularly GCP. Familiarity with GenAI concepts, tools, and governance, including LLMs and retrieval-augmented generation. Ability to contribute to technical design and make pragmatic trade-offs under delivery pressure. It is a strong plus if you have: Experience in delivering regulated financial services platforms with audit and compliance requirements. Exposure to cloud-native architectures like containers, Kubernetes, and service meshes. Knowledge of observability tooling and resilience testing. Experience prototyping or integrating GenAI capabilities within software solutions. Language required for the role: Communicative English — capable of collaborating effectively in a multicultural team environment. Eligibility to work in Europe: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.