Senior API Developer – Java & Cloud Services

🏢 Summary: Senior API Developer role focused on designing, building, and operating scalable, resilient APIs in a cloud-native banking environment using Java and Spring Boot. The position involves delivering high-performance backend services, integrating multiple API styles, and ensuring quality, security, and maintainability. It offers hybrid work in Krakow with impact on modern digital banking platforms. 🗂️ Requirements: 5+ years of experience building APIs and backend services in Java, Strong expertise in Spring Boot, Experience with Maven build tool, Hands-on experience designing REST, GraphQL, and SOAP APIs, Experience with API tools: Postman, Swagger UI/OpenAPI, SoapUI, Strong understanding of backend architecture (service design, data access, caching, resilience), Proficiency with JSON, XML, XAML, Experience in troubleshooting, performance tuning, and defect fixing, Fluent English (spoken and written), Legal right to work in the European Union 📃 Skills: Java, SpringBoot, Maven, REST, GraphQL, SOAP, Postman, Swagger, OpenAPI, SoapUI, JSON, XML, XAML, IntelliJ 🏢 Description: Empower the Future of Digital Banking — Lead the Development of Cutting-Edge APIs in a Cloud-Native Ecosystem! Krakow-based opportunity with hybrid work model (up to 3 days remote per week). As a Senior API Developer – Java and Cloud-Native Architecture , you will be working for our client, a leading financial institution committed to innovative, secure, and scalable digital solutions. You will help design, build, and operate resilient APIs that fuel HSBC’s digital products and internal platforms, shaping the future of banking technology with modern Java and cloud-native patterns. This role offers a unique chance to work on impactful projects that define the banking experience of tomorrow while growing your engineering expertise in a dynamic environment. Your main responsibilities: Build and evolve high-performing, scalable APIs and backend services using Java, Spring Boot, Maven, primarily within IntelliJ. Collaborate effectively with cross-functional teams—including engineers, product owners, architects, and testers—to deliver reliable services aligned with business objectives. Design APIs following established standards (REST, GraphQL, SOAP) with attention to versioning, backward compatibility, and user experience. Integrate with third-party and internal APIs, ensuring system resilience, observability, and robust error handling. Develop and support event-driven services using Kafka, including schema evolution, topic design, and message reliability patterns. Build cloud-ready services on AWS, considering deployment and runtime aspects for Kubernetes/EKS, Fargate, Redis, RDS, S3, and Route 53. Own quality assurance by writing automated tests, conducting API testing, and troubleshooting production issues, embracing a “you build it, you run it” mindset. Produce and maintain clear API documentation (OpenAPI/Swagger) and operational runbooks where needed. Contribute to engineering standards emphasizing security-by-design, performance, and maintainability, driving continuous improvement. You're ideal for this role if you have: 5+ years of experience building APIs and backend services in Java. Strong expertise with Spring Boot and build tools like Maven. Deep understanding of backend architecture concepts such as service design, data access, caching, and resilience. Proven experience with API architectural styles (REST, GraphQL, SOAP) and integration patterns. Hands-on experience with API tooling (Postman, Swagger UI/OpenAPI, SoapUI). Proficiency working with data formats like JSON, XML, XAML. A track record of diagnosing issues, fixing defects, and enhancing system performance and reliability. Excellent collaboration skills and the ability to communicate complex technical ideas clearly. 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 patterns). Background building and operating services on AWS (Kubernetes/EKS, Fargate, Redis, RDS, S3, Route 53). Familiarity with CI/CD pipelines, observability tools (logging, metrics, tracing), and secure coding practices. Strong critical thinking with a pragmatic, delivery-focused mindset. Language Required for the role: Fluent English command (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: Mid-Level Java API Developer role focused on designing, building, and maintaining secure, scalable APIs and backend services for digital banking platforms using Java and cloud-native architecture. The position involves developing event-driven services, integrating with internal and third-party systems, and deploying solutions on AWS. You will collaborate within a cross-functional team to deliver high-quality, resilient, and well-documented API solutions. 🗂️ Requirements: Minimum 4 years of experience building APIs and backend services in Java, Strong experience with Spring Boot, Experience with Maven build tool, Solid understanding of backend architecture and service design, Knowledge of REST, GraphQL, and SOAP standards, Experience integrating APIs and handling JSON and XML data formats, Ability to develop and support event-driven services with Kafka, Experience building cloud-ready services on AWS, Ability to write automated tests and perform API testing, Experience with OpenAPI/Swagger documentation, Good command of English, Legal right to work in the European Union 📃 Skills: Java, Spring, Maven, REST, GraphQL, SOAP, Kafka, AWS, Kubernetes, EKS, Fargate, Redis, RDS, S3, Route53, JSON, XML, Postman, Swagger, OpenAPI, SoapUI, IntelliJ 🏢 Description: Unleash the power of modern development — drive innovation through scalable API solutions! Krakow-based opportunity with hybrid work model. As a Mid-Level Java API Developer , you will be working for our client, a leader in digital banking services. You will design, build, and run secure, scalable APIs that support HSBC’s digital products and internal platforms. Collaborating within a cross-functional engineering team, you'll enable reliable services using cutting-edge Java and cloud-native architecture, including event-driven patterns. This role offers an exciting chance to contribute to financial technology innovation and advance your career in a dynamic environment. Your main responsibilities: Build and evolve high-performing, scalable APIs and backend services using Java, Spring Boot, Maven, primarily in IntelliJ Collaborate with engineers, product owners, architects, and testers to deliver well-designed services aligned with business goals Design APIs following industry standards and patterns (e.g., REST, GraphQL, SOAP), ensuring versioning and backward compatibility Integrate with third-party and internal APIs, focusing on resilience, observability, and error handling Develop and support event-driven services using Kafka, including topic design, schema evolution, and message reliability Build cloud-ready services on AWS platforms such as Kubernetes/EKS, Fargate, Redis, RDS, S3, and Route 53 Write automated tests, perform API testing, troubleshoot production issues, and contribute to continuous quality improvements Maintain clear API documentation (OpenAPI/Swagger) and create runbooks as needed Contribute to engineering standards focused on security, performance, and maintainability You're ideal for this role if you have: At least 4 years of experience building APIs and backend services in Java Strong experience with Spring Boot and Maven development tooling In-depth understanding of backend architecture, including service design, data access, caching, and resilience patterns Knowledge of API standards such as REST, GraphQL, and SOAP Familiarity with API tooling like Postman, Swagger UI/OpenAPI, SoapUI Comfort working with JSON and XML data formats Proven ability to diagnose issues, fix defects, and enhance system reliability Excellent collaboration skills and clear technical communication It is a strong plus if you have: (optional) Experience with event-driven architecture at scale (Kafka streams, schema registry, idempotency, exactly-once/at-least-once delivery) Hands-on experience building and operating services on AWS (Kubernetes/EKS, Fargate, Redis, RDS, S3) Knowledge of CI/CD pipelines, observability tools (logging, metrics, tracing), and secure coding practices Strong critical thinking with a pragmatic, delivery-oriented mindset Language Required for the role: Good command of English (Communicative level) 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 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 Java Developer role focused on designing and delivering scalable APIs and microservices within a cloud-native platform environment. The position involves building high-performance backend solutions in Java and Kotlin, working in Agile CI/CD teams, and driving integration and compliance excellence. Hybrid work model based in Kraków. 🗂️ Requirements: 5+ years of software development experience, Strong experience with Java, Strong experience with Kotlin, Experience in API development, Experience with SQL and databases, Knowledge of HTML and JavaScript, Understanding of microservices architecture, Experience working in Agile environments, Experience using Jira and Confluence, Fluent English (B2+), Legal right to work in the European Union 📃 Skills: Java, Kotlin, API, SQL, HTML, JavaScript, Microservices, Jira, Confluence, CI/CD, AWS, Azure, GCP, Jenkins, Linux, AIX, WAS 🏢 Description: Unleash innovation — master scalable APIs and Microservices to transform digital ecosystems! Kraków-based opportunity with hybrid work model As a Senior Java Developer – API & Microservices Expert , you will be working for our client, a leader in building cloud-native platforms focused on streamlining software development & compliance management. Contribute to cutting-edge microservice architectures, helping development teams achieve operational excellence and compliance. This role offers a chance to shape scalable solutions and advance your career in a dynamic tech environment. Your main responsibilities: Collaborate with cross-functional teams to design, develop, and implement impactful APIs and microservices. Build robust backend solutions using Java and Kotlin, ensuring high performance and scalability. Lead efforts in troubleshooting, optimizing, and ensuring seamless integrations across platforms. Work within an agile CI/CD environment to deliver rapid, high-quality iterations. Engage proactively with users and stakeholders to understand and respond to their needs. Participate in peer code reviews and automate testing to maintain high development standards. You're ideal for this role if you have: Over 5 years of experience in software development, with a focus on Java and Kotlin. Proven expertise in API creation, SQL/databases, and HTML/JavaScript. Strong troubleshooting and analytical skills. Experience working in Agile environments using Jira and Confluence. Good understanding of microservices architecture. Fluent English (B2+) communication skills. It is a strong plus if you have: (optional) Experience with cloud platforms like AWS, Azure, or GCP. Knowledge of CI/CD pipelines with Jenkins. Background in Systems Administration across Linux, AIX, or WAS platforms. Language Required for the role: Fluent English (B2+) 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 Developer role focused on designing and building scalable APIs and microservices within a cloud-native environment. The position involves developing high-performance backend solutions in Java and Kotlin, ensuring seamless integrations, and working in an agile CI/CD setup. It offers the opportunity to shape robust microservice architectures and drive operational excellence. 🗂️ Requirements: 5+ years of software development experience, Strong experience with Java, Strong experience with Kotlin, Proven expertise in API development, Experience with SQL and databases, Knowledge of HTML and JavaScript, Understanding of microservices architecture, Experience working in Agile environments, Experience with Jira and Confluence, Strong troubleshooting and analytical skills, Fluent English (B2+), Legal right to work in the European Union 📃 Skills: Java, Kotlin, API, SQL, HTML, JavaScript, Microservices, Jira, Confluence, CI/CD, Jenkins, AWS, Azure, GCP, Linux, AIX, WAS 🏢 Description: Unleash innovation — master scalable APIs and Microservices to transform digital ecosystems! As a Senior Java Developer – API & Microservices Expert, you will be working on building cloud-native platforms focused on streamlining software development and compliance management. Contribute to cutting-edge microservice architectures, helping development teams achieve operational excellence and compliance. This role offers a chance to shape scalable solutions and advance your career in a dynamic tech environment. Quick Facts: - Hybrid work model Your main responsibilities: - Collaborate with cross-functional teams to design, develop, and implement impactful APIs and microservices - Build robust backend solutions using Java and Kotlin, ensuring high performance and scalability - Lead efforts in troubleshooting, optimizing, and ensuring seamless integrations across platforms - Work within an agile CI/CD environment to deliver rapid, high-quality iterations - Engage proactively with users and stakeholders to understand and respond to their needs - Participate in peer code reviews and automate testing to maintain high development standards You're ideal for this role if you have: - Over 5 years of experience in software development, with a focus on Java and Kotlin - Proven expertise in API creation, SQL/databases, and HTML/JavaScript - Strong troubleshooting and analytical skills - Experience working in Agile environments using Jira and Confluence - Good understanding of microservices architecture - Fluent English (B2+) communication skills It is a strong plus if you have: - Experience with cloud platforms like AWS, Azure, or GCP - Knowledge of CI/CD pipelines with Jenkins - Background in Systems Administration across Linux, AIX, or WAS platforms Language Required for the role: - Fluent English (B2+) 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

🏢 Summary: Senior Java Developer role focused on designing and building scalable APIs and microservices within a cloud-native environment, contributing to high-performance backend systems and seamless platform integrations. The position involves working in an Agile CI/CD setup to deliver robust, compliant, and scalable digital solutions. Hybrid work model based in Kraków. 🗂️ Requirements: 5+ years of experience in software development, Strong experience with Java, Strong experience with Kotlin, Experience in building APIs, Experience with SQL and databases, Experience with HTML, Experience with JavaScript, Understanding of microservices architecture, Experience working in Agile environment, Experience with Jira, Experience with Confluence, Fluent English (B2+), Legal right to work in the EU 📃 Skills: Java, Kotlin, SQL, HTML, JavaScript, Microservices, API, Agile, Jira, Confluence, AWS, Azure, GCP, Jenkins, Linux, AIX, WAS, CI/CD 🏢 Description: Unleash innovation — master scalable APIs and Microservices to transform digital ecosystems! Kraków-based opportunity with hybrid work model As a Senior Java Developer – API & Microservices Expert , you will be working for our client, a leader in building cloud-native platforms focused on streamlining software development & compliance management. Contribute to cutting-edge microservice architectures, helping development teams achieve operational excellence and compliance. This role offers a chance to shape scalable solutions and advance your career in a dynamic tech environment. Your main responsibilities: Collaborate with cross-functional teams to design, develop, and implement impactful APIs and microservices. Build robust backend solutions using Java and Kotlin, ensuring high performance and scalability. Lead efforts in troubleshooting, optimizing, and ensuring seamless integrations across platforms. Work within an agile CI/CD environment to deliver rapid, high-quality iterations. Engage proactively with users and stakeholders to understand and respond to their needs. Participate in peer code reviews and automate testing to maintain high development standards. You're ideal for this role if you have: Over 5 years of experience in software development, with a focus on Java and Kotlin. Proven expertise in API creation, SQL/databases, and HTML/JavaScript. Strong troubleshooting and analytical skills. Experience working in Agile environments using Jira and Confluence. Good understanding of microservices architecture. Fluent English (B2+) communication skills. It is a strong plus if you have: (optional) Experience with cloud platforms like AWS, Azure, or GCP. Knowledge of CI/CD pipelines with Jenkins. Background in Systems Administration across Linux, AIX, or WAS platforms. Language Required for the role: Fluent English (B2+) 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 Developer role focused on building and enhancing scalable digital banking solutions in a hybrid Krakow-based setup. The position involves developing microservices and REST APIs, supporting CI/CD pipelines, and ensuring high-quality, secure applications used by millions of customers worldwide. 🗂️ Requirements: 5+ years experience as Java Software Engineer, Strong knowledge of Java and Spring, Experience with REST APIs, Experience with microservices architecture, Experience with Docker, Experience with CI/CD in Jenkins, Experience with TDD, Understanding of data structures and algorithms, Knowledge of secure application design, Experience working in Agile teams, Fluent English, Legal right to work in the EU 📃 Skills: Java, Spring, REST, Microservices, Docker, Jenkins, CI/CD, TDD, Agile, Algorithms, Security, OOP, Concurrency 🏢 Description: Ignite innovation in digital banking — empower seamless financial experiences worldwide! Krakow-based opportunity with hybrid work model As a Senior Java Developer – Digital Banking Solutions , you will be working for our client, a leading global bank, driving forward their most exciting digital revolution. You’ll be contributing to impactful solutions that influence the banking behavior of over 37 million customers worldwide, shaping the future of digital finance through innovative technology. This is a unique career opportunity to collaborate with a dynamic team of experts from world-renowned technology companies and to be at the forefront of digital evolution in banking. Your main responsibilities: Design, develop, and test scalable microservices using Java within an agile environment. Implement robust REST APIs and integrate new features into existing digital solutions. Champion test-driven development (TDD) practices and ensure high-quality code through troubleshooting and debugging. Collaborate closely with cross-functional teams to deliver end-to-end digital banking products and services. Contribute to automation efforts and support the deployment pipeline with CI/CD pipelines in Jenkins and Docker. Assist in optimizing system performance and enhancing security measures. Participate in continuous improvement initiatives and adopt innovative technologies to improve processes. Provide production support and troubleshooting for live environments. You're ideal for this role if you have: 5+ years of professional experience as a Java Software Engineer. Strong knowledge of Java, Spring, REST, Docker, CI/CD in Jenkins, and microservices architecture. Experience with test-driven development (TDD) and troubleshooting skills. Experience working in an agile, cross-functional team. Good understanding of data structures, algorithms, and secure application design. Proven ability to adapt and learn new technologies rapidly. It is a strong plus if you have: (optional) Knowledge of concurrency in Java, OOP principles, or clean code practices. Certifications in Java or related fields. Language Required for the role: Fluent English, with excellent communication skills. Eligibility to work on 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 Java Developer role focused on building and enhancing scalable digital banking solutions in a hybrid Krakow-based environment. The position involves designing microservices, implementing REST APIs, and supporting CI/CD pipelines to deliver secure, high-quality banking products for millions of users worldwide. 🗂️ Requirements: 5+ years of professional experience as Java Software Engineer, Strong knowledge of Java and Spring, Experience with REST APIs and microservices architecture, Experience with Docker and CI/CD in Jenkins, Experience with test-driven development (TDD), Strong troubleshooting and debugging skills, Understanding of data structures and algorithms, Knowledge of secure application design, Experience working in agile cross-functional teams, Fluent English, Legal right to work in the European Union 📃 Skills: Java, Spring, REST, Microservices, Docker, Jenkins, CI/CD, TDD, Algorithms, Security, Agile 🏢 Description: Ignite innovation in digital banking — empower seamless financial experiences worldwide! Krakow-based opportunity with hybrid work model As a Senior Java Developer – Digital Banking Solutions , you will be working for our client, a leading global bank, driving forward their most exciting digital revolution. You’ll be contributing to impactful solutions that influence the banking behavior of over 37 million customers worldwide, shaping the future of digital finance through innovative technology. This is a unique career opportunity to collaborate with a dynamic team of experts from world-renowned technology companies and to be at the forefront of digital evolution in banking. Your main responsibilities: Design, develop, and test scalable microservices using Java within an agile environment. Implement robust REST APIs and integrate new features into existing digital solutions. Champion test-driven development (TDD) practices and ensure high-quality code through troubleshooting and debugging. Collaborate closely with cross-functional teams to deliver end-to-end digital banking products and services. Contribute to automation efforts and support the deployment pipeline with CI/CD pipelines in Jenkins and Docker. Assist in optimizing system performance and enhancing security measures. Participate in continuous improvement initiatives and adopt innovative technologies to improve processes. Provide production support and troubleshooting for live environments. You're ideal for this role if you have: 5+ years of professional experience as a Java Software Engineer. Strong knowledge of Java, Spring, REST, Docker, CI/CD in Jenkins, and microservices architecture. Experience with test-driven development (TDD) and troubleshooting skills. Experience working in an agile, cross-functional team. Good understanding of data structures, algorithms, and secure application design. Proven ability to adapt and learn new technologies rapidly. It is a strong plus if you have: (optional) Knowledge of concurrency in Java, OOP principles, or clean code practices. Certifications in Java or related fields. Language Required for the role: Fluent English, with excellent communication skills. Eligibility to work on 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 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 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.