Java Developer

🏢 Summary: Junior Java Engineer role focused on developing and maintaining backend services and microservices in a cloud-based environment within a Scrum team. The position involves hands-on Java development, testing, and support under senior mentorship, with exposure to modern cloud technologies. Hybrid work model with client interaction and opportunities to grow in cloud engineering. 🗂️ Requirements: 1+ years of software development experience or strong junior-level hands-on practice, Hands-on experience with Java, Basic knowledge of object-oriented programming, Basic knowledge of RESTful APIs, Basic knowledge of Git or version control systems, Basic knowledge of SQL, Familiarity with unit testing frameworks, Understanding of software development lifecycle, English proficiency at B2 level, Ability to self-manage tasks and meet deadlines 📃 Skills: Java, OOP, REST, Git, SQL, JUnit, Mockito, Scrum, GCP, Spring, SpringBoot, Microservices, Kotlin 🏢 Description: Are you passionate about Java and eager to grow your skills as a Junior Java Engineer in a dynamic, cloud-focused environment? Join our international team of experienced developers and architects, where you’ll learn from senior engineers and mentors while contributing to the development and maintenance of modern cloud-based applications. We value transparency, autonomy, and continuous improvement, and we’re looking for a motivated self-starter ready to take ownership and grow within a Scrum team. This role offers a hybrid model, with 3 days per week working from the client's office in Kraków, Poland. Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Support the development, testing, and maintenance of backend services and microservices using Java Implement small features and bug fixes under the guidance of senior engineers Write clean, readable, maintainable, and well-tested code following team standards and best practices Participate in code reviews as a learner and apply received feedback Assist in troubleshooting and resolving technical issues together with the team Take part in Agile ceremonies (daily stand-ups, sprint planning, reviews, retrospectives) Communicate with stakeholders and team members to clarify requirements and implementation details Contribute to technical documentation and knowledge sharing within the team Requirements 1+ years of experience in software development or strong junior-level hands-on practice Hands-on experience with Java Basic knowledge of object-oriented programming, RESTful APIs, Git/version control, and SQL Familiarity with unit testing (e.g. JUnit, Mockito) Understanding of the software development lifecycle (analysis, design, implementation, testing, support) English level B2 with readiness for client-facing communication Ability to self-manage tasks, prioritize work, and meet deadlines Nice to have Basic knowledge or initial experience with Google Cloud Platform (GCP) Familiarity with Spring / Spring Boot Exposure to microservices architecture Experience or interest in Kotlin We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively.

🏢 Summary: Java Developer role focused on designing and maintaining scalable microservices-based backend systems using Spring technologies. The position involves building high-performance RESTful services, improving existing systems, and collaborating closely with cross-functional teams in a hybrid work model. 🗂️ Requirements: Minimum 2 years of experience with Java, Hands-on experience with microservices architecture, Experience with Spring and Spring Boot, Knowledge of REST APIs and integration patterns, Ability to work onsite in Warsaw 2 days per week 📃 Skills: Java, Microservices, Spring, SpringBoot, REST, Kubernetes, AWS, Azure, GCP, Kafka, RabbitMQ 🏢 Description: We’re looking for a Java Developers with solid experience in microservices architecture to join our growing team in Łódź. If you enjoy building scalable backend systems and like collaborating face-to-face a couple of days a week, this role is for you. Responsibilities Design, develop, and maintain Java-based microservices Build scalable, high-performance backend solutions Collaborate with product owners, architects, and other developers Write clean, testable, and well-documented code Participate in code reviews and technical discussions Support and improve existing systems Requirements Experience with Java minimum 2 years + Hands-on experience with microservices architecture Experience with Spring / Spring Boot Knowledge of REST APIs and integration patterns Ability to work onsite in Warsaw 2 days per week Nice to Have Experience with Kubernetes Cloud experience (AWS, Azure, or GCP) Knowledge of messaging systems (Kafka, RabbitMQ) Experience working in Agile/Scrum teams What We Offer Hybrid work model (2 days onsite in Warsaw) Competitive salary and benefits Modern tech stack and real impact on products Friendly, collaborative team culture Opportunities for learning and professional growth

🏢 Summary: Junior Java Developer role focused on developing and maintaining Java-based microservices in a collaborative Agile team. The position involves implementing features, fixing bugs, and contributing to high-quality, continuously delivered software. It requires working in a hybrid model with strong emphasis on clean code and modern development practices. 🗂️ Requirements: Minimum 1 year of experience with Java, Knowledge of Google Cloud Platform (GCP), Proficiency in Maven, Proficiency in Hibernate, Proficiency in Spring, Understanding of REST/WebServices, Knowledge of design patterns, Experience with Test-Driven Development (TDD), Familiarity with version control systems, Experience using IDEs 📃 Skills: Java, GCP, Maven, Hibernate, Spring, REST, WebServices, Microservices, TDD, Git, DesignPatterns, IDEs 🏢 Description: We are seeking a Junior Java Developer to join our progressive team. You will be working in a project team that demands technical excellence and whose members are expected to hold each other accountable for the overall success of the output. The team strives to enable the client's organization to satisfy business customers through the continuous delivery of valuable and high-quality software that drives business performance. If you're ready to make an impact in a dynamic environment, we want to hear from you! For this role, we consider candidates residing in Kraków, Wrocław or Gdańsk, due to a hybrid mode of work, with 3 days per week working from the office. Responsibilities: Support the development, testing, and maintenance of microservices using Java Implement small features and bug fixes with guidance from senior engineers Write clean, readable, and maintainable code, following team standards Participate in code reviews as a learner, receiving and applying feedback Assist in troubleshooting and resolving technical issues together with the team Take part in Agile ceremonies (daily stand-ups, planning, reviews, retrospectives) Contribute to technical documentation and knowledge sharing within the team Requirements: Knowledge of Java programming language with at least 1 year of experience Familiarity with Google Cloud Platform (GCP) Proficiency in Maven, Hibernate, and Spring Understanding of WebServices/REST for API interactions Knowledge in design patterns and experience with Test-Driven Development (TDD) Familiarity with development tools such as version control and IDEs English level B1+ for effective communication We offer/Benefits: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively.

🏢 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.

🏢 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: The role involves designing and developing scalable, enterprise-grade Java applications with a strong focus on APIs and microservices architecture. The position combines hands-on coding with solution design, API governance, and cloud-ready system architecture. It includes working in a hybrid model while contributing to secure, high-performing backend systems and CI/CD-driven environments. 🗂️ Requirements: Strong hands-on experience with Java and SpringBoot, Experience building APIs and microservices architectures, Solid knowledge of J2EE, Spring, Hibernate, JPA, Experience with REST and XML/JSON processing, Knowledge of secure coding principles and application security, Experience with relational and NoSQL databases, Experience with CI/CD pipelines and DevOps practices, Proficiency with Jenkins, Docker, Git, Bash, Unix/Linux, Understanding of Agile methodologies (Scrum, Kanban) 📃 Skills: Java, SpringBoot, J2EE, Spring, Hibernate, JPA, REST, XML, JSON, Oracle, PostgreSQL, MongoDB, Jenkins, Docker, Git, Bash, Linux, Unix, CICD, Scrum, Kanban, GCP, GKE, AWS 🏢 Description: Senior Java Engineer (API & Microservices) We are looking for an experienced Java Engineer who wants to work on scalable, enterprise-grade solutions and have a real impact on system architecture and product development. This role combines hands-on software engineering with solution design, API governance, and close collaboration with cross-functional teams. Hybrid model: 6-8 days per month from the office in Cracow Responsibilities Design, develop, and maintain scalable applications and microservices using Java technologies Build secure, reliable, and high-performing APIs and backend solutions Contribute to data modeling, system architecture, and solution design Ensure non-functional requirements such as scalability, security, resilience, and reliability are embedded into the architecture Drive API governance standards across security, process, and system APIs Develop cloud-ready, flexible, and robust solutions Collaborate with cross-functional teams to deliver scalable and efficient products Troubleshoot and resolve complex production issues Perform code reviews, unit testing, and maintain high engineering standards Estimate development effort and support sprint planning activities Work with CI/CD pipelines and follow DevOps best practices Requirements Strong hands-on experience with Java and Spring Boot Proven experience building APIs and microservices architectures Solid knowledge of Java/J2EE, Spring Framework, Hibernate, and JPA Experience working with RESTful web services and processing XML/JSON data Good understanding of secure coding principles and application security Strong experience with relational and NoSQL databases such as Oracle, PostgreSQL, and MongoDB Expertise in CI/CD pipelines, Jenkins, Docker, Git, shell scripting, and Unix/Linux environments Strong understanding of Agile methodologies including Scrum and Kanban Excellent analytical and problem-solving skills Nice to Have Experience with JavaScript and frontend technologies such as React, Angular, or Node.js Familiarity with JavaScript build tools and dependency management Experience creating responsive web applications (Bootstrap, mobile-first design, etc.) Exposure to cloud platforms such as GCP, GKE, or AWS Knowledge of system architecture and solution design principles Experience or interest in Python, Machine Learning, or Data Science We offer Work in a global, forward-thinking cybersecurity environment Real influence on cloud security strategy and standards Flexible working model and strong career growth opportunities Working under a B2B contract or an employment contract with Antal

🏢 Summary: Senior Java Developer role focused on building and maintaining core banking systems using modern Java and event-driven microservices architecture. The position involves developing scalable services, evolving legacy systems, and contributing to a complex microservices ecosystem within a CI/CD environment. Remote work model with strong emphasis on high-quality, domain-driven design in the financial sector. 🗂️ Requirements: 7+ years of Java development experience, Experience in banking or financial services, Deep knowledge of Java 21/25, Strong knowledge of Spring Boot, Experience with MongoDB, Strong experience with Apache Kafka, Experience with event-driven architecture, Proficiency in REST APIs, Proficiency with Git, Proficiency with Maven, Experience with CI/CD tools, Experience with microservices architecture, Understanding of Domain-Driven Design (DDD), Ability to work with legacy systems, Communicative Polish, Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, MongoDB, Kafka, REST, Git, Maven, Jenkins, OpenShift, JaCoCo, SonarQube, CQRS, DDD, Hexagonal, Microservices, CI/CD 🏢 Description: Empower scalable financial systems — drive innovation in banking technology! Warsaw-based opportunity with remote work model (up to 5 days remote per week). As a Senior Java Developer , you will be working for our client, a leader in the banking industry, dedicated to building and maintaining core domain systems that serve internal clients. Join us in creating robust, event-driven microservices that shape the future of banking infrastructure, fostering seamless digital experiences and technological excellence. Your main responsibilities: Develop and maintain core banking services using Java 21/25, Spring Boot 4.0, and MongoDB. Design and implement event-driven architectures utilizing Apache Kafka and Schema Registry. Collaborate on microservices ecosystem, ensuring high quality and scalability. Work with legacy code and contribute to system evolution within a complex environment. Ensure code quality through tools like JaCoCo and SonarQube, following best practices. Participate in CI/CD pipelines using OpenShift, Jenkins, and Maven. Apply Domain-Driven Design (DDD), CQRS, and Hexagonal architecture principles. Work independently within a mono-repo approach, managing multiple repositories and shared libraries. You're ideal for this role if you have: 7+ years of experience in Java development, ideally within banking or financial services. Deep knowledge of Java (21/25), Spring Boot, and MongoDB. Strong experience with Kafka and event-driven architecture. Proficiency with REST APIs, Git, Maven, and CI/CD tools. Ability to work with legacy systems and develop scalable solutions. Solid understanding of microservices architecture and domain modeling. It is a strong plus if you have: (optional) Certifications or experience in OpenShift, Jenkins, or related cloud technologies. Language Required for the role: Communicative Polish. 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: Opportunity for an Expert Java Engineer to design and build scalable, high-performance financial systems within a global team. The role focuses on developing microservices, cloud-native solutions on Kubernetes and GCP, and influencing architectural decisions in mission-critical environments. Ideal for a senior back-end engineer experienced in distributed systems and banking or capital markets domains. 🗂️ Requirements: 5+ years of professional software engineering experience, Strong hands-on experience with Java, Experience with REST APIs and microservices architecture, Experience with messaging systems (RabbitMQ or similar), Strong SQL database knowledge, Hands-on experience with Kubernetes, Experience with cloud platforms (preferably GCP), Knowledge of NoSQL databases and distributed systems, Experience with CI/CD pipelines, Understanding of scalability, performance, and high-availability architectures, Experience in banking or capital markets domain 📃 Skills: Java, REST, Microservices, RabbitMQ, SQL, Kubernetes, GCP, NoSQL, CI/CD, Agile, DistributedSystems 🏢 Description: Expert Java Engineer We are looking for an Expert Java Engineer to join a global team building and evolving mission-critical financial systems. This role is ideal for an experienced back-end engineer who enjoys designing scalable solutions, influencing architecture, and working on high-performance distributed systems. 📍 Location: Kraków, Poland (Hybrid – 6–8 office visits per month)* 💰 Rate: Up to 190 PLN/h (B2B) * Hybrid Model Based in Kraków with 6–8 office days per month . Candidates living outside Kraków are welcome to apply. If you are willing to travel to the office, we will cover your travel and accommodation costs . Responsibilities: Design and develop scalable microservices and REST APIs. Build high-performance, highly available back-end applications. Develop and operate cloud-native solutions on Kubernetes and GCP. Contribute to architecture decisions and technical roadmaps. Optimize databases, integrations, and distributed systems. Drive engineering best practices across CI/CD, security, and software quality. Collaborate closely with business stakeholders and global engineering teams. Mentor developers and support technical delivery. We are looking for: 5+ years of professional software engineering experience. Strong hands-on experience with Java. Solid experience with REST APIs and microservices architecture. Experience with messaging systems (RabbitMQ or similar). Strong SQL database knowledge. Hands-on experience with Kubernetes. Experience working with cloud platforms (preferably GCP). Knowledge of NoSQL databases and distributed systems. Experience with CI/CD pipelines and Agile methodologies. Strong understanding of scalability, performance, and high-availability architectures. Experience in the banking or capital markets domain, preferably related to trade lifecycle, post-trade processing, or FX products. Nice to Have Experience with Go or Rust. Experience with ClickHouse or other analytical databases. Front-end development experience. Knowledge of API governance. Experience with large-scale data processing environments. This role is not perfectly suited for you, but you have a friend who would fit? Recommend your friend and get up to 5000 zł! Referral Program: Talent from your network Don't hesitate and apply now! Nr ref.: 32/6/2026/r/3612

🏢 Summary: Backend Developer role focused on designing, building, and maintaining scalable Java and Kotlin-based applications and microservices within an international team. The position involves developing high-quality backend systems, collaborating with cross-functional teams, and optimizing distributed systems performance. The role emphasizes clean code, modern frameworks, and agile delivery practices. 🗂️ Requirements: 5+ years of backend development experience with Java 8+ and Kotlin, Strong knowledge of Spring Framework and Spring Boot, Experience building RESTful APIs and microservices, Experience with SQL and NoSQL databases, Understanding of Agile/Scrum methodologies 📃 Skills: Java, Kotlin, Spring, SpringBoot, REST, Microservices, SQL, NoSQL, PostgreSQL, MongoDB, Agile, Scrum 🏢 Description: We are looking for skilled Java & Kotlin Developers to join our growing technology team in Poland. As part of an international development group, you’ll design, build, and maintain scalable backend systems using Java and modern frameworks. You’ll collaborate closely with cross-functional teams to deliver high-quality, reliable, and efficient software solutions. Key Responsibilities Design, develop, and maintain Java-based applications and microservices. Write clean, efficient, and testable code following best practices and coding standards. Collaborate with front-end developers , DevOps engineers , and QA teams to ensure seamless integration and delivery. Participate in code reviews , architecture discussions, and agile ceremonies. Contribute to technical documentation and continuous improvement of development processes. Troubleshoot and optimize performance across distributed systems. Requirements 5+ years of experience in backend development using Java 8+ Kotlin . Strong understanding of Spring Framework / Spring Boot . Experience with RESTful APIs , microservices , and SQL / NoSQL databases (e.g., PostgreSQL, MongoDB). Knowledge of Agile / Scrum methodologies. Good command of English (B2 or higher) – Polish language skills are a plus. Nice to Have Experience with cloud platforms (AWS, Azure, or GCP). Familiarity with message brokers (Kafka, RabbitMQ). Knowledge of unit testing and test automation frameworks (JUnit, Mockito). Interest in DevOps or system design concepts. How to Apply If you’re passionate about building high-quality Java applications and want to be part of a dynamic engineering team, send your CV