Senior Java Developer

🏢 Summary: Senior Java Developer role focused on designing and owning mission-critical backend systems in fintech and high-scale environments. The position involves leading microservices architecture, optimizing performance and reliability, and mentoring engineers. Full-time onsite work in Warsaw with strong emphasis on architectural quality and production-grade systems. 🗂️ Requirements: Full-time onsite availability in Warsaw, 5+ years commercial experience in Java development, Strong commercial experience with Java and Spring (Boot, Security, Data), Deep knowledge of Hibernate ORM and SQL databases, Strong understanding of JVM internals, Experience designing scalable backend architectures, Proficiency with CI/CD pipelines, Proficiency with Git, Proficiency with Gradle, Experience with production debugging, Ability to use AI-assisted development tools, English level B2 or higher 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, SpringData, Hibernate, SQL, JVM, PostgreSQL, CI/CD, Git, Gradle, REST, SOLID, DDD, ChatGPT, Claude, Cursor, Grok 🏢 Description: 📍 Warsaw (Onsite – near Metro Plac Wilsona) 💼 B2B / Freelance About Silk Software House Silk Software House builds and maintains mission-critical backend systems for fintech, payments, and large-scale platforms. We value strong engineering judgment, ownership, and long-term cooperation over short-term delivery pressure. Your Role As a Senior Java Developer, you’ll take technical ownership of backend services, influence architectural decisions, and mentor other engineers. You’ll work directly on complex domains where performance, security, and reliability matter. Responsibilities Design and implement backend architectures using Java 11+ and Spring Lead development of microservices and APIs Optimize performance, scalability, and data consistency Work deeply with Hibernate , transactions, and database internals Review code, mentor developers, and set engineering standards Collaborate with DevOps on deployments and observability Requirements This role requires full-time onsite work (no remote or hybrid options). Candidates must be willing and able to work from our office near the Plac Wilsona metro station 5+ years of commercial experience as a Java Developer Strong commercial experience with Java & Spring (Boot, Security, Data) Deep knowledge of Hibernate ORM , SQL databases, and JVM behavior Experience designing scalable, maintainable backend architectures Proficiency with CI/CD, Git, Gradle, and production debugging Effective use of AI-assisted development tools ( ChatGPT, Claude, Cursor, Grok ) English at B2+ level Nice to Have Event-driven architecture (Kafka, queues) Cloud-native systems (AWS/GCP/Azure) Kubernetes, Docker, observability tools Experience in fintech or high-traffic systems Rates (B2B) 120–160 PLN / hour Recruitment Process Intro call (30 min) Senior-level technical interview Architecture & project discussion Offer Tech Stack Java: Advanced Spring Boot: Advanced Hibernate: Advanced PostgreSQL: Advanced Solid: Advanced DDD: Advanced REST API: Advanced

🏢 Summary: Offer for a Mid Java Developer to build and maintain scalable backend systems using Java and Spring Boot in a full-time onsite role. The position involves developing REST APIs and microservices, working with relational databases, and collaborating with cross-functional teams. The role focuses on clean, production-ready code and gradual ownership of system components. 🗂️ Requirements: 3–5 years commercial experience as Java Developer, Strong Java 11+ knowledge, Practical Spring Boot experience, Solid Hibernate ORM knowledge, Experience with SQL and relational databases, Experience with Git, Experience with Gradle or Maven, Experience with CI/CD pipelines, Ability to use AI development tools, English B2 or higher, Full-time onsite availability in Warsaw 📃 Skills: Java, Spring, SpringBoot, Hibernate, SQL, PostgreSQL, MySQL, Git, Gradle, Maven, CI/CD, REST, Microservices, DDD, Kafka, AWS, GCP, Azure, Docker, Kubernetes 🏢 Description: 📍 Warsaw (Onsite – near Metro Plac Wilsona) 💼 B2B About Silk Software House Silk Software House is a Warsaw-based development company delivering high-quality fintech, e-commerce, and enterprise systems for long-term clients. We focus on clean architecture, pragmatic engineering, and building software that actually runs in production for years. Your Role As a Mid Java Developer, you’ll work on real-world backend systems used by thousands of users. You’ll develop and maintain scalable services, collaborate closely with senior engineers, and gradually take ownership of system components. Responsibilities -Develop and maintain backend services in Java (11+) using Spring Boot -Implement and evolve REST APIs and microservices -Work with relational databases ( PostgreSQL, MySQL ) and Hibernate -Write clean, testable, production-ready code -Collaborate with frontend, QA, and DevOps teams Requirements This role requires full-time onsite work (no remote or hybrid options). Candidates must be willing and able to work from our office near the Plac Wilsona metro station 3–5 years of commercial experience as a Java Developer Practical experience with Java and Spring Boot Solid understanding of Hibernate ORM and SQL databases Familiarity with Git, Gradle/Maven, CI/CD pipelines Ability to use modern AI dev tools effectively ( ChatGPT, Claude, Cursor, etc. ) English at B2 level or higher Nice to Have Kafka or event-driven systems Basic cloud experience (AWS, GCP, Azure) Docker, Kubernetes basics Rates (B2B) 90–120 PLN / hour Recruitment Process Intro call (30 min) Technical interview or short task Final fit & project discussion Offer Tech Stack Java: Regular Spring Boot: Regular Hibernate: Regular PostgreSQL: Regular Solid: Regular DDD: Regular REST API: Regular

🏢 Summary: Senior Frontend Developer role focused on designing and owning frontend architecture for complex web applications in fintech and enterprise domains. The position involves building advanced React applications with TypeScript, making architectural decisions, and ensuring high performance, security, and code quality. Full-time onsite work in Warsaw with strong collaboration across backend and product teams. 🗂️ Requirements: Full-time onsite availability in Warsaw, 5+ years professional programming experience, Strong commercial experience with React, Excellent knowledge of TypeScript, Deep understanding of React state management and rendering, Very good knowledge of HTML5 and CSS3, Strong experience with TailwindCSS, Experience designing frontend architectures, Experience integrating REST or GraphQL APIs, Knowledge of authentication and authorization flows, Understanding of frontend security and performance optimization, Experience diagnosing performance and rendering issues, Proficiency with Git and professional workflows, Experience working in Agile teams, Ability to use AI-assisted development tools, English level B2+ 📃 Skills: React, TypeScript, HTML5, CSS3, TailwindCSS, REST, GraphQL, Git, Agile, Next.js, WCAG, CICD, Storybook, i18n, Authentication, Authorization, Security, Performance 🏢 Description: 📍 Warsaw (Onsite – near Metro Plac Wilsona)💼 B2B About Silk Software House Silk Software House builds and maintains business-critical web applications for fintech, payments, and enterprise clients. We value ownership, strong technical judgment, and developers who can design solutions, not just implement tasks. Your Role As a Senior Frontend Developer, you’ll take responsibility for frontend architecture, make key technical decisions, and ensure long-term code quality and performance. You’ll collaborate closely with backend teams and help shape how frontend systems are built and evolved. Responsibilities Design and build frontend architecture for web applications Develop complex React applications using TypeScript Make and justify architectural and technical decisions Optimize performance, rendering, and user experience Define and enforce frontend best practices and coding standards Integrate frontend systems with REST / GraphQL APIs Review code and support less experienced developers Collaborate with architects, backend developers, and product stakeholders Support existing projects through modernization and optimization Requirements This role requires full-time onsite work (no remote or hybrid options). Candidates must be willing and able to work from our office near the Plac Wilsona metro station 5+ years of professional programming experience , including strong React experience Excellent knowledge of TypeScript Deep understanding of React , state management, and rendering behavior Very good knowledge of HTML5, CSS3 , and responsive design Strong experience with TailwindCSS Solid understanding of authentication and authorization flows Good knowledge of frontend security and performance optimization Experience designing and building frontend architectures Experience diagnosing complex performance and rendering issues Familiarity with Git and professional development workflows Experience working in teams using Agile methodologies Ability to use AI-assisted development tools effectively English at B2+ level , enabling smooth communication Nice to Have Next.js Accessibility standards ( WCAG ) E2E testing frameworks CI/CD pipelines Storybook i18n support in production applications Rates (B2B) 110–140 PLN / hour Recruitment Process Intro call (30 min) Senior-level technical interview Architecture & decision-making discussion Offer

🏢 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: Full-time onsite Senior PHP Developer role focused on end-to-end backend ownership, from requirements gathering and architecture to implementation and technical decision-making. The position involves building and maintaining business-critical PHP applications, APIs, CMS systems, and data exchange solutions. You will also collaborate with DevOps and mentor other developers while working closely with clients. 🗂️ Requirements: Full-time onsite work in Warsaw (near Metro Plac Wilsona), 5+ years commercial experience as PHP Developer, Very good knowledge of PHP 8.1+, Strong commercial experience with Symfony or Laravel, Deep understanding of relational databases (MySQL or PostgreSQL), Strong knowledge of OOP principles and design patterns, Experience with automated testing, Knowledge of application security and common vulnerabilities, Proficiency with Git and development workflows, Experience working in Agile teams, Ability to independently gather requirements and design technical solutions, Effective use of AI-assisted development tools, English level B2+ 📃 Skills: PHP, Symfony, Laravel, MySQL, PostgreSQL, OOP, Git, Agile, Testing, Security, ChatGPT, Claude, Cursor 🏢 Description: Warsaw (Onsite – near Metro Plac Wilsona) 💼 B2B About Silk Software House Silk Software House builds and maintains business-critical backend and web systems for fintech, payments, and large-scale platforms. We value ownership, strong engineering judgment, and the ability to design solutions, not just implement tickets. Your Role As a Senior PHP Developer, you’ll take ownership of backend solutions end-to-end: from gathering requirements, through architecture and implementation, to explaining and defending technical decisions. You’ll work closely with clients and mentor other developers. Responsibilities Design and develop PHP applications from scratch Gather requirements and propose well-reasoned technical solutions Design and maintain APIs, internal services, and data exchange systems Design and implement CMS systems Create new modules and evolve existing systems Make architectural decisions and evaluate alternatives Review code and support less experienced developers Collaborate with DevOps on deployment, CI/CD, and monitoring Requirement This role requires full-time onsite work (no remote or hybrid options). Candidates must be willing and able to work from our office near the Plac Wilsona metro station 5+ years of commercial experience as a PHP Developer Very good knowledge of PHP 8.1+ Strong commercial experience with Symfony or Laravel Deep understanding of relational databases (MySQL/PostgreSQL) Strong knowledge of OOP principles, design patterns, and coding standards Experience with automated testing and testing concepts Good understanding of application security and common vulnerabilities Solid understanding of Git and software development workflows Experience working in a team using Agile methodologies Ability to independently gather requirements, design solutions, and justify decisions Effective use of AI-assisted development tools ( ChatGPT, Claude, Cursor, etc. ) English at B2+ level Nice to Have Docker and containerized environments CI/CD pipelines (GitLab or GitHub) Monitoring and observability tools Experience in fintech or high-traffic systems Basic frontend knowledge (HTML, CSS, JS) Rates (B2B) 110–140 PLN / hour Recruitment Process Intro call (30 min) Senior-level technical interview Architecture & decision-making discussion Offer

🏢 Summary: Senior Java Developer role focused on designing, building, and maintaining scalable, secure, high-performance backend systems using modern Java and cloud-native technologies. The position involves working in Agile teams, leading technical discussions, mentoring developers, and driving DevOps automation. Hybrid work model with regular presence in the Warsaw office. 🗂️ Requirements: 8+ years of backend development experience, Proficiency in Java 17+, Experience with Spring Boot and Spring Security, Strong knowledge of Hibernate and JPA, Experience with Maven, Strong SQL skills with PostgreSQL, Experience in cloud-native application development, Hands-on experience with Git and GitHub pipelines, Experience with CI/CD tools, Experience with Kubernetes and Helm, Ability to write Bash/Shell scripts, Experience with JUnit, AssertJ, and Hamcrest, Degree in Computer Science or equivalent experience 📃 Skills: Java, Spring, SpringSecurity, Hibernate, JPA, Maven, PostgreSQL, SQL, Kubernetes, Helm, Docker, Bash, Git, GitHub, CICD, JUnit, AssertJ, Hamcrest 🏢 Description: Role Overview As a Senior Java Developer, you will design, build, and maintain scalable, secure, and high-performance backend systems. Working closely with cross-functional teams, you’ll drive innovation – including the use of GenAI tools like GitHub Copilot -and mentor other developers. Work mode: hybrid 2-3 days / 5 days at the Warsaw office. Key Responsibilities Backend & DB: Develop robust, multi-tenant applications using Java 17+, Spring Boot, and PostgreSQL. DevOps & Automation: Manage deployments using Docker, Kubernetes, and Helm; automate tasks via Bash/Shell scripting. Leadership & Agile: Lead design discussions, mentor peers, and actively participate in Scrum events within a distributed team. Requirements Technical Skills: Java Stack: Java 17+, Spring (Boot, Security), Hibernate/JPA, Maven. Data & Cloud: SQL (PostgreSQL), cloud-native application development. DevOps & CI/CD: Git/GitHub (pipelines), CI/CD tools, Kubernetes, Helm, Bash. Testing: JUnit, AssertJ, Hamcrest. Skills & Experience: 8+ years of professional backend experience (preferably in enterprise environments). Degree in Computer Science (or equivalent experience). Fluent English ( B2/C1 ) and strong collaboration skills in Agile teams. Nice-to-Have Kafka & Event-driven / Microservices architecture. Python, C, or Go (Golang) scripting. Monitoring tools (Kibana, Grafana, Prometheus). Security best practices (OWASP Top 10) & Jira. Client A global leader with a sharp focus on lottery solutions. A confident step forward building on a long history of delivering safe and secure technology, demonstrating strong commitment to customers as a dedicated lottery service provider. Leveraging collective insight, experience, and expertise to create reliable and engaging solutions that help lottery clients achieve objectives, meet player needs, and deliver meaningful benefits to communities.

🏢 Summary: Senior Java Developer role focused on designing and building high-performance, scalable backend systems in a distributed microservices environment for the financial sector. The position involves developing REST APIs, processing large data volumes, and contributing to architecture and CI/CD in cloud-based environments. The role requires strong expertise in Java, Spring, distributed systems, and Kubernetes. 🗂️ Requirements: Minimum 10 years of software development experience, Very good knowledge of Java and Spring, Strong understanding of REST APIs, HTTPS, microservices, and message queues, Ability to design high-availability, scalable, high-performance systems, Very good knowledge of relational databases and SQL, Knowledge of distributed systems and data processing, Hands-on experience with Kubernetes and cloud platforms (GCP preferred), Familiarity with CI/CD pipelines, Experience working in Agile methodologies, Fluent Polish and English, Residence in Poland 📃 Skills: Java, Spring, REST, HTTPS, Microservices, MQ, SQL, Kubernetes, GCP, CI/CD, Agile, DistributedSystems, DataProcessing 🏢 Description: We are looking for an experienced Senior Java Developer to join a team responsible for building and developing modern backend systems in a distributed environment. The projects involve high-performance and scalable solutions used in the financial sector, with a focus on processing large volumes of data and microservices architecture. Your tasks Designing and developing backend systems based on Java Creating and evolving a microservices architecture Building and maintaining REST APIs and system integrations Designing solutions that meet high availability and performance requirements Working with systems that process large volumes of data Collaborating with the team using Agile methodologies Participating in architecture design and technical decision-making Implementing and optimizing CI/CD processes and ensuring system security Requirements Minimum 10 years in software development Very good knowledge of Java (backend) and Spring Strong understanding of REST APIs, HTTPS, microservices, and message queues (MQ) Ability to design high-availability, scalable, and high-performance systems Very good knowledge of relational databases (SQL) Familiarity with CI/CD pipelines and Agile ways of working Knowledge of distributed systems and data processing Hands-on work with Kubernetes and cloud platforms (GCP preferred) Fluent Polish and English required Residing in Poland required Nice-to-have requirements Knowledge of Go, Rust, or similar system-level languages Experience with NoSQL and analytical databases, e.g., ClickHouse Frontend development experience Familiarity with the banking sector (trade lifecycle, FX, post-trade processing) Banking experience / FX experience (forex) Working from the office in Krakow 6 times per month What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 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 Developer role focused on building and optimizing scalable backend systems for real-time data processing in a fully remote environment. The position involves developing Java 17+ and Spring Boot applications, managing Kafka streams, implementing CI/CD pipelines, and maintaining high-quality testing and database solutions. 🗂️ Requirements: 5+ years of Java development experience, Java 17+ proficiency, Spring Boot expertise, REST API design experience, Apache Kafka experience, JUnit knowledge, Mockito knowledge, CI/CD experience, Jenkins familiarity or GitLab CI familiarity, Good Polish language skills, Communicative English level, Legal right to work in the European Union 📃 Skills: Java, Spring, Kafka, JUnit, Mockito, REST, Jenkins, GitLab, PostgreSQL, RabbitMQ, OpenShift, Prometheus, Grafana, JMeter 🏢 Description: Unleash innovative backend solutions — shape the future of real-time data processing! 100% remote work. As a Senior Java Developer, you will be working for a client focused on building robust, scalable software solutions. You will contribute to advancing data-driven platforms, delivering impactful backend components that support critical business operations and digital transformation. Your main responsibilities: - Develop and optimize Java 17+ applications with Spring Boot, focusing on REST API creation and integration. - Design and write automated tests, including unit, integration, contract, and API testing using JUnit, Mockito, and REST Assured. - Manage Apache Kafka streams, ensuring seamless real-time data processing and system reliability. - Implement CI/CD pipelines with Jenkins or GitLab CI to improve development workflows. - Maintain and enhance PostgreSQL database solutions, ensuring data integrity and performance. - Collaborate across teams to troubleshoot and resolve complex technical issues. - Document technical specifications and participate in code reviews. You’re ideal for this role if you have: - At least 5 years of professional experience in Java development. - Advanced knowledge of Java 17+, Spring Boot, and REST API design. - Proven expertise with Apache Kafka. - Experience with testing frameworks such as JUnit and Mockito. - Familiarity with CI/CD tools like Jenkins or GitLab CI. Nice to have: - Working knowledge of PostgreSQL and RabbitMQ. - Experience with OpenShift, Prometheus, Grafana, or JMeter. Language requirements: - Polish: Good command. - English: Communicative level. Eligibility: - Only candidates with an existing legal right to work in the European Union will be considered. Interested candidates should apply with a CV, preferably in English, including consent to the processing and storage of personal data.

🏢 Summary: Full-time Senior Java Developer role focused on designing and maintaining high-performance, secure backend systems in a cloud-native environment. The position involves leading technical design, developing scalable applications with Java 17+ and Spring Boot, and supporting CI/CD and Kubernetes-based deployments. Work is remote or hybrid (Warsaw) within Agile, distributed teams. 🗂️ Requirements: Mastery of Java 17+, Proficiency in Spring, Spring Boot, Spring Security, Experience in cloud-native application development, Experience with Maven, Experience with SQL databases, Proficiency in Git and GitHub including pipeline development, Knowledge of JUnit, AssertJ, Hamcrest, Experience with CI/CD tools and processes, Experience with Kubernetes and Helm, Bash/Shell scripting skills, Experience in enterprise environments, Experience working in Agile (Scrum/Kanban) teams 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, Maven, SQL, Git, GitHub, JUnit, AssertJ, Hamcrest, CICD, Kubernetes, Helm, Bash, Shell, Docker 🏢 Description: Type of work : Full-time; Remote/Hybrid (Warsaw) As a Senior Java Developer, you will lead the design, development, and maintenance of high-performance backend systems. You’ll collaborate with product managers, architects, and developers to ensure our solutions are scalable, secure, and future-ready. We encourage the use of Generative AI tools like GitHub Copilot to boost innovation and productivity. Requirements Java, Postgresql, Liquibase, Spring boot, Angular. Responsibilities Develop robust, configurable applications using Java 17+ and Spring Boot to effectively meet the diverse requirements of multiple customers. Ensure the efficiency of PostgreSQL databases for scalable solutions. Ensure security, scalability, and performance in all backend solutions. Employ Bash/Shell scripting for automation and comprehensive system integration tasks. Contribute to application deployment using Docker and Kubernetes , while utilizing Helm for package management. Communicate effectively in English (B2/C1 level) within distributed teams. Participate actively in scrum events. Collaborate with other engineering teams. Lead design discussions and mentor other developers. Client A global leader with a sharp focus on lottery solutions. A confident step forward building on a long history of delivering safe and secure technology, demonstrating strong commitment to customers as a dedicated lottery service provider. Leveraging collective insight, experience, and expertise to create reliable and engaging solutions that help lottery clients achieve objectives, meet player needs, and deliver meaningful benefits to communities.