Senior Java Spring Boot Backend Developer – Cloud and Microservices

🏢 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 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: Senior role focused on designing and developing scalable Java-based microservices for a global banking collateral platform. The position involves full lifecycle development, DevOps integration, and test-driven practices within a hybrid Kraków-based setup. You will build secure, high-performance solutions using modern Java and cloud-ready technologies. 🗂️ Requirements: 8+ years experience with Java and microservices, Strong expertise in Java 17/21, Strong expertise in Spring Boot, Experience building REST APIs, Knowledge of PostgreSQL, Experience with DevSecOps pipelines, Experience with TDD using JUnit and Cucumber, Experience across full SDLC, Experience working in Agile and DevOps teams, Fluent English, Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, REST, PostgreSQL, DevSecOps, JUnit, Cucumber, Microservices, CI/CD, SpringCloud, Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon, Redis, Hazelcast, MQ, Solace, GCP, AWS, Ansible, Oracle 🏢 Description: Ignite innovation in financial technology — build scalable microservices that transform global banking. Kraków-based opportunity with hybrid work model. As a Senior Microservices Developer – Java & Spring Boot , you will be working for our client, a leading international bank providing cutting-edge financial solutions. You will contribute to developing a state-of-the-art collateral platform, leveraging microservices and open-source infrastructure to drive efficiency and security in global banking operations. This role offers an exciting chance to impact the future of banking technology and advance your career in a dynamic environment. Your main responsibilities: Design, develop, and maintain high-quality, reusable Java microservices using Java 17/21 and Spring Boot Contribute across all phases of the development lifecycle, from requirements gathering to deployment Implement DevOps practices and support automation in CI/CD pipelines Ensure test-driven development using JUnit and Cucumber, and collaborate closely with QA teams Improve team velocity and code quality through mentoring and best practice sharing Support platform stability by resolving incidents, monitoring performance, and managing problem resolution Develop automated tooling to enhance operational support and platform maintenance You're ideal for this role if you have: 8+ years of hands-on experience with Java and microservices architecture Strong expertise in Java 17/21, Spring Boot, and REST API development Deep knowledge of PostgreSQL and experience with DevSecOps pipelines Proven ability to work in Agile and DevOps teams, with excellent communication skills Experience with TDD (JUnit, Cucumber) and full software development lifecycle Ability to create innovative solutions for complex business challenges It is a strong plus if you have: (optional) Familiarity with AI-assisted code-generation tools (e.g., GitHub Copilot) Experience with Spring Cloud components (Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon) Knowledge of distributed in-memory data stores (Redis, Hazelcast) and messaging systems (MQ, Solace) Cloud experience (GCP/AWS), automated deployment tools (Ansible), or relational databases (Oracle) Language required for the role: Fluent English Eligibility for this 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 Backend Java Developer role focused on designing and building scalable, high-performance backend systems using Java and Spring Boot in a cloud-native environment. The position involves developing enterprise-grade solutions, ensuring performance and security, and supporting containerized deployments. The role requires strong experience with modern backend technologies and infrastructure tools. 🗂️ Requirements: 8+ years of backend development experience, Strong experience with Java 17+, Strong experience with Spring and Spring Boot, Experience with Spring Security, Experience with SQL databases, Experience with Maven, Experience with Git and CI/CD pipelines, Experience with testing frameworks (JUnit, AssertJ, Hamcrest), Experience with Kubernetes and Helm, Experience with Bash or Shell scripting, Experience with cloud-native applications, Experience in enterprise environments 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, SQL, Maven, Git, CICD, JUnit, AssertJ, Hamcrest, Kubernetes, Helm, Bash, Shell, Docker, PostgreSQL 🏢 Description: Senior Backend Java Developer Location: Warsaw, Poland (hybrid – 2 days/week in the office) About the Role We’re looking for a Senior Backend Java Developer to design and build scalable, high-performance backend systems for international products. You’ll work in a collaborative environment, contribute to architectural decisions, and mentor other engineers. Responsibilities Design, develop, and maintain backend systems using Java 17+ and Spring Boot Ensure scalability, performance, and security of solutions Work with SQL databases (e.g. PostgreSQL) Support deployments using Docker, Kubernetes, and Helm Use Bash/Shell for automation and integration tasks Lead technical discussions and mentor team members Collaborate in Agile (Scrum) teams and communicate in English Requirements Strong experience with Java 17+, Spring / Spring Boot / Spring Security Experience with cloud-native applications Maven, SQL, Git (GitHub, CI/CD) Testing frameworks (JUnit, AssertJ, Hamcrest) Kubernetes, Helm Bash/Shell scripting English B2/C1 Experience in enterprise environments 8+ years of backend development experience Nice to Have PostgreSQL, Hibernate/JPA Kafka, event-driven architecture Microservices architecture Python Knowledge of C or Go CI/CD tools, JIRA Monitoring tools (Grafana, Prometheus, Kibana) Security best practices (OWASP) Qualifications Degree in Computer Science or related field

🏢 Summary: Opportunity for a Senior Java Backend Developer to build and maintain a secure, large-scale public platform based on microservices within the financial services sector. The role focuses on developing business-critical backend services, contributing to architectural decisions, and improving deployment and engineering practices. Ideal for experienced engineers who combine strong Java expertise with architectural thinking and a proactive approach to system optimization. 🗂️ Requirements: 6–10 years of professional software development experience, Strong expertise in Java backend development, Experience with microservices architecture, Understanding of distributed systems, Experience in system design and software architecture, Ability to work with secure, large-scale systems, Experience improving deployment processes and system reliability 📃 Skills: Java, Microservices, DistributedSystems, SystemDesign, SoftwareArchitecture, REST, Git, Maven, Gradle, Python, Cloud, DevOps 🏢 Description: Senior Java Backend Developer 📍 Location: Wrocław, Poland (Hybrid – 3 days onsite) 📈 Experience: 6–10 years We are currently looking for an experienced Java Backend Developer for our client operating in the financial services sector . The successful candidate will join a team responsible for developing and maintaining a secure, large-scale public platform built on a microservices architecture. This role offers the opportunity to work on business-critical systems where reliability, scalability, and security are key priorities. Beyond feature development, the team is focused on addressing challenges related to architecture, deployment practices, and engineering processes. Therefore, we are looking for someone who combines strong hands-on development skills with architectural thinking and a proactive approach to problem-solving. Key Responsibilities Design and develop new backend features and services using Java Maintain and enhance a secure, customer-facing platform Work within a modern microservices ecosystem Contribute to architectural improvements and technical decision-making Help optimize deployment processes, system reliability, and development workflows Identify technical challenges and propose scalable, long-term solutions What We're Looking For 6–10 years of professional software development experience Strong expertise in Java backend development Solid understanding of microservices architecture and distributed systems Experience with system design and software architecture Strong analytical and critical-thinking skills Ability to understand technical concepts deeply and make informed engineering decisions A proactive mindset and willingness to improve existing systems, processes, and practices Nice to Have Experience with Python Exposure to cloud environments and modern DevOps practices This opportunity is particularly suited to engineers who enjoy working on complex backend systems, influencing architectural decisions, and helping teams improve the way software is designed, built, and deployed.

🏢 Summary: Hybrid Krakow-based role for a Senior API Developer focused on designing and delivering secure, scalable APIs and backend services in a modern cloud-native banking environment. The position centers on building high-performance Java-based solutions, integrating distributed systems, and deploying services on AWS. It offers hands-on ownership of API architecture, event-driven systems, and production-grade cloud deployments. 🗂️ Requirements: Minimum 5 years of experience building APIs and backend services in Java, Strong expertise in Spring Boot and Maven, Solid understanding of backend architecture and service design, In-depth knowledge of REST, GraphQL, and SOAP APIs, Experience with API testing and documentation tools, Ability to work with JSON and XML data formats, Experience integrating third-party and internal APIs, Strong troubleshooting and performance optimization skills, Fluent English, Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, Maven, REST, GraphQL, SOAP, Kafka, AWS, Kubernetes, EKS, Fargate, Redis, RDS, S3, Route53, Postman, Swagger, OpenAPI, SoapUI, JSON, XML, IntelliJ 🏢 Description: Ignite innovation with scalable APIs — shape the future of banking technology. Krakow-based opportunity with hybrid work model. As a Senior API Developer – Java & Cloud Services , you will be working for our client, a leading financial institution dedicated to transforming digital banking. You will design, build, and optimize secure, scalable APIs that power their cutting-edge digital products and internal platforms, leveraging modern Java and cloud-native patterns to deliver impactful solutions swiftly and reliably. This role offers an excellent platform for technical growth and innovation in a dynamic financial environment. Your main responsibilities: Build and evolve high-performing, scalable APIs and backend services using Java, Spring Boot, and Maven (developed primarily in IntelliJ). Collaborate with cross-functional teams, including engineers, product owners, architects, and testers, to deliver robust services aligned with business needs. Design APIs following industry standards (REST, GraphQL, SOAP), ensuring versioning, backward compatibility, and optimal consumer experience. Integrate with third-party and internal APIs, ensuring resilience, observability, and clear error handling. Develop and support event-driven services utilizing Kafka, managing topic design, schema evolution, and message reliability. Deploy cloud-ready services on AWS, including Kubernetes / EKS, Fargate, Redis, RDS, S3, Route 53, with consideration for deployment and runtime environments. Maintain product quality through automated testing, regular API testing, and troubleshooting live issues with a "you build it, you run it" approach. Produce comprehensive API documentation using OpenAPI/Swagger and supporting runbooks as necessary. Contribute to engineering standards around security, performance, maintainability, and continuous improvement. You're ideal for this role if you have: At least 5 years of hands-on experience building APIs and backend services in Java. Strong expertise with Spring Boot and Maven. Solid understanding of backend architecture concepts including service design, data access, caching, and resilience. In-depth knowledge of API styles and integration patterns (REST, GraphQL, SOAP). Experience working with API tooling such as Postman, Swagger UI / OpenAPI, SoapUI. Ability to work with data formats like JSON and XML. Proven troubleshooting skills to diagnose issues, fix defects, and enhance performance and reliability. Strong collaboration skills and ability to communicate technical decisions effectively. It is a strong plus if you have: Experience with event-driven architecture at scale (Kafka streams, schema registry, idempotency, exactly-once/at-least-once). Familiarity with AWS services like Kubernetes/EKS, Fargate, Redis, RDS, S3, Route 53. Knowledge of CI/CD pipelines, observability tools (logging, metrics, tracing), and secure coding practices. Strong critical thinking and a pragmatic, delivery-focused mindset. Language Required for the role: Fluent English (spoken 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 Developer role focused on building and maintaining scalable microservices and cloud-based digital products in the OTT/ECommerce industry within an Agile environment. The position involves backend development, architectural contributions, CI/CD support, and collaboration with cross-functional teams using modern Java and cloud technologies. Hybrid or remote work model based in Warszawa. 🗂️ Requirements: 4+ years of Java development experience, Java 8-25, Multithreading, Immutability, Design patterns, Spring Boot, Spring MVC, WebFlux, MyBatis, TestContainers, SQL, NoSQL databases, Oracle, PostgreSQL, MongoDB, Redis, Kafka, Microservices architecture, RESTful APIs, Kubernetes, Docker, AWS, JUnit, Mockito, Spock, Jenkins, GitLab, Unix/Linux scripting, Polish language proficiency, Communicative English, Legal right to work in the EU 📃 Skills: Java, Spring, WebFlux, MyBatis, TestContainers, SQL, Oracle, PostgreSQL, MongoDB, Redis, Kafka, REST, Kubernetes, Docker, AWS, JUnit, Mockito, Spock, Jenkins, GitLab, Unix, Linux, SCRUM, Confluence, Git 🏢 Description: Empower digital transformation — craft scalable solutions with Java and cloud innovation! Warszawa-based opportunity with hybrid/ remote work model. As a Senior Java Developer , you will be working for our client, a leading player in the OTT/ECommerce industry, focused on delivering cutting-edge digital products within a dynamic and collaborative environment. Be part of a team that drives innovation, shapes future-ready architectures, and elevates user experiences through advanced microservices and cloud technologies. Your main responsibilities: Develop and maintain robust microservices using Java 8-25, ensuring high-quality code and optimal performance. Collaborate with cross-functional teams including Frontend Developers and Test Engineers within an Agile Nexus SCRUM framework. Conduct code reviews, contribute to architectural decisions, and mentor junior team members. Design, implement, and optimize RESTful architecture, utilizing tools like Kubernetes, Docker, and SOA principles. Support CI/CD pipelines and manage version control with Git, Jenkins, and related tools. Write comprehensive technical documentation in Confluence and contribute to knowledge sharing. Participate in technical consultations, problem-solving, and continuous improvement initiatives. Ensure application security following OWASP standards and best practices. You're ideal for this role if you have: At least 4 years of professional experience in Java development. Strong expertise in Java 8-25, multithreading, immutability, and design patterns. Experience with Spring Boot, Spring MVC, WebFlux, MyBatis, and TestContainers. Solid knowledge of SQL and NoSQL databases such as Oracle, PostgreSQL, MongoDB, Redis, and messaging systems like Kafka. Familiarity with microservices architecture, RESTful APIs, Kubernetes, Docker, and cloud services (AWS). Practical understanding of testing frameworks like JUnit, Mockito, and Spock. Experience with version control, CI/CD tools (Jenkins, GitLab), and scripting in Unix/Linux environments. Good command of the Polish language and communicative English skills. Ability to work independently with strong analytical and problem-solving skills. It is a strong plus if you have: Front-end skills (HTML, CSS, JavaScript, Angular/React/Vue.js). Certifications in AWS or other cloud platforms. Knowledge of DevOps practices and automation tools. Eligibility to work in the European Union: Only candidates with an existing legal right to work in the EU 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.