Kotlin/Java Tech Lead

🏢 Summary: Hands-on Java Tech Lead role responsible for architecture, design, and delivery of scalable, business-critical distributed systems in a financial services environment. The position combines technical leadership with active development, driving architectural decisions, engineering standards, and CI/CD initiatives. You will lead a team to build resilient microservices-based solutions impacting core business processes. 🗂️ Requirements: 9+ years software engineering experience, Strong hands-on Java experience, Strong experience with Spring ecosystem, Experience designing large-scale distributed systems, Solid knowledge of microservices architecture, Experience with SQL databases, Experience with Hibernate, Experience with messaging systems, Experience building and maintaining CI/CD pipelines, Minimum 2+ years in technical leadership role, Proven experience leading engineering teams, Experience driving architectural decisions, Understanding of REST APIs and integration patterns, Experience with containerization technologies, Fluent English 📃 Skills: Java, Spring, SQL, Hibernate, Kafka, Microservices, CI/CD, Docker, Kubernetes, OpenShift, REST, Angular 🏢 Description: We are hiring on behalf of our client – a global financial services organization recognized for its premium service, deep domain expertise, and strong technology-driven approach. The company partners with clients, helping them solve complex challenges across investor services and capital markets. Their culture is built on collaboration, knowledge sharing, and empowering individuals to contribute beyond their immediate role. We are looking for a Java Tech Lead who will take ownership of the architecture, design, and delivery of business-critical applications forming the backbone of the company’s process ecosystem. This is a hands-on leadership role, combining technical depth with team leadership. You will guide engineers, shape architectural decisions, and build scalable, resilient systems that directly impact business operations. Key takeaways: Stack: Java, Spring, SQL, Hibernate, Kafka, microservices, CI/CD, Docker/Kubernetes Salary: 27 000 - 30 500 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location: ul. Klimeckiego, Krakow Recruitment process : A call with MOTIFE Recruiter Technical Interview Behavioral Interview Responsibilities: Technical Leadership Lead and mentor a team of engineers, supporting their growth and development. Define and promote best practices in architecture, coding standards, and system design. Facilitate technical discussions and drive key architectural decisions. Architecture & System Design Design and build scalable distributed systems used by internal and external stakeholders. Own end-to-end architecture for low-code/no-code platforms and business process solutions. Ensure systems meet requirements for scalability, security, resiliency, and performance. Delivery & Engineering Excellence Oversee the development lifecycle, ensuring high-quality and timely delivery. Conduct code reviews and enforce engineering standards across the team. Identify risks and proactively address technical challenges. Collaboration & Stakeholder Management Partner with business stakeholders to translate requirements into technical solutions. Communicate effectively across technical and non-technical teams. Support hiring processes and contribute to building a strong engineering team. Innovation & Platform Evolution Drive adoption of modern tools, frameworks, and architectural patterns. Lead initiatives around automation, CI/CD pipelines, and engineering efficiency. Conduct technical research and recommend improvements to the technology stack. Requirements: Technical Expertise 9+ years of experience in software engineering (backend or full-stack). Strong hands-on experience with Java and Spring ecosystem. Proven experience designing large-scale distributed systems. Solid understanding of microservices architecture. Experience with SQL databases, Hibernate, and messaging systems (e.g., Kafka). Experience building and maintaining CI/CD pipelines. Leadership Experience Minimum 2+ years in a technical leadership role (Tech Lead / Architect). Proven track record of leading teams and driving architectural decisions. Experience mentoring engineers and supporting their career growth. Collaboration & Mindset Strong communication skills with fluent English. Comfortable working in Agile environments. Ability to balance hands-on work with leadership responsibilities. Domain & Additional Knowledge Understanding of enterprise integration patterns (REST APIs, queues, pub-sub). Familiarity with cloud platforms and containerization (Docker, Kubernetes, OpenShift). Exposure to frontend technologies (Angular is a plus). What we offer: Private medical care Life insurance Professional training and certification support Social fund benefits platform Stable employment with a long-term contract Apply now Take the next step in your career and lead the development of scalable, high-impact systems in a modern engineering environment! Please apply via our careers page and submit your CV in English.

🏢 Summary: Hands-on Java Tech Lead role focused on owning architecture, design, and delivery of business-critical distributed systems in a global financial services environment. The position combines technical leadership with active development, guiding engineers and driving architectural decisions across microservices-based platforms. Hybrid work model in Krakow with a long-term employment contract and competitive salary. 🗂️ Requirements: 9+ years of software engineering experience (backend or full-stack), Strong hands-on experience with Java and Spring, Experience designing large-scale distributed systems, Solid understanding of microservices architecture, Experience with SQL databases and Hibernate, Experience with messaging systems (Kafka), Experience building and maintaining CI/CD pipelines, Minimum 2+ years in a Tech Lead or Architect role, Proven experience leading teams and driving architectural decisions, Experience mentoring engineers, Fluent English, Experience working in Agile environments, Understanding of REST APIs, queues, and pub-sub patterns, Familiarity with Docker and Kubernetes or OpenShift 📃 Skills: Java, Spring, SQL, Hibernate, Kafka, Microservices, CI/CD, Docker, Kubernetes, OpenShift, REST, Angular 🏢 Description: We are hiring on behalf of our client – a global financial services organization recognized for its premium service, deep domain expertise, and strong technology-driven approach. The company partners with clients, helping them solve complex challenges across investor services and capital markets. Their culture is built on collaboration, knowledge sharing, and empowering individuals to contribute beyond their immediate role. We are looking for a Java Tech Lead who will take ownership of the architecture, design, and delivery of business-critical applications forming the backbone of the company’s process ecosystem. This is a hands-on leadership role, combining technical depth with team leadership. You will guide engineers, shape architectural decisions, and build scalable, resilient systems that directly impact business operations. Key takeaways: Stack: Java, Spring, SQL, Hibernate, Kafka, microservices, CI/CD, Docker/Kubernetes Salary: 27 000 - 30 500 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location: ul. Klimeckiego, Krakow Recruitment process : A call with MOTIFE Recruiter Technical Interview Behavioral Interview Responsibilities: Technical Leadership Lead and mentor a team of engineers, supporting their growth and development. Define and promote best practices in architecture, coding standards, and system design. Facilitate technical discussions and drive key architectural decisions. Architecture & System Design Design and build scalable distributed systems used by internal and external stakeholders. Own end-to-end architecture for low-code/no-code platforms and business process solutions. Ensure systems meet requirements for scalability, security, resiliency, and performance. Delivery & Engineering Excellence Oversee the development lifecycle, ensuring high-quality and timely delivery. Conduct code reviews and enforce engineering standards across the team. Identify risks and proactively address technical challenges. Collaboration & Stakeholder Management Partner with business stakeholders to translate requirements into technical solutions. Communicate effectively across technical and non-technical teams. Support hiring processes and contribute to building a strong engineering team. Innovation & Platform Evolution Drive adoption of modern tools, frameworks, and architectural patterns. Lead initiatives around automation, CI/CD pipelines, and engineering efficiency. Conduct technical research and recommend improvements to the technology stack. Requirements: Technical Expertise 9+ years of experience in software engineering (backend or full-stack). Strong hands-on experience with Java and Spring ecosystem. Proven experience designing large-scale distributed systems. Solid understanding of microservices architecture. Experience with SQL databases, Hibernate, and messaging systems (e.g., Kafka). Experience building and maintaining CI/CD pipelines. Leadership Experience Minimum 2+ years in a technical leadership role (Tech Lead / Architect). Proven track record of leading teams and driving architectural decisions. Experience mentoring engineers and supporting their career growth. Collaboration & Mindset Strong communication skills with fluent English. Comfortable working in Agile environments. Ability to balance hands-on work with leadership responsibilities. Domain & Additional Knowledge Understanding of enterprise integration patterns (REST APIs, queues, pub-sub). Familiarity with cloud platforms and containerization (Docker, Kubernetes, OpenShift). Exposure to frontend technologies (Angular is a plus). What we offer: Private medical care Life insurance Professional training and certification support Social fund benefits platform Stable employment with a long-term contract Apply now Take the next step in your career and lead the development of scalable, high-impact systems in a modern engineering environment! Please apply via our careers page and submit your CV in English.

🏢 Summary: Hybrid Java Tech Lead role in Warsaw focused on leading backend development, driving architectural decisions, and delivering secure, scalable enterprise applications using Java and Spring Boot. The position combines hands-on engineering with technical leadership, mentoring, and collaboration across Agile teams. Candidates will work on mission-critical systems while improving software quality and delivery processes. 🗂️ Requirements: 7+ years of Java backend development experience, Experience as Tech Lead or technical initiative leader, Core Java expertise, Spring Framework experience, JPA and Hibernate experience, Oracle database and SQL optimization knowledge, REST API development experience, Microservices architecture knowledge, Git proficiency, Maven proficiency, Scrum experience, Backend security knowledge, Unit and integration testing experience, Fluent English 📃 Skills: Java, Spring, SpringBoot, JDBC, Hibernate, JPA, Oracle, SQL, REST, OpenAPI, Swagger, Microservices, Git, Maven, Scrum, Kubernetes, OpenSearch, Ansible, Jenkins, Sonar 🏢 Description: Empower innovative software solutions — shape the future of Java development! Warszawa-based opportunity with hybrid work model (up to 4 remote days per week) As a Java Tech Lead within our client's software development team, you will be working for a leading industry innovator delivering mission-critical enterprise applications. You will combine hands-on backend development with technical leadership, driving architectural decisions, mentoring developers, and ensuring engineering excellence across multiple applications. Working closely with stakeholders and Agile teams, you will remove delivery blockers, define technical direction, and build secure, scalable Java solutions that support long-term business growth and operational efficiency. Your main responsibilities: Lead technical solution discussions with business and engineering stakeholders Define technical direction and critical delivery paths for development initiatives Mentor developers and support the team's technical growth Ensure high-quality, secure and maintainable software aligned with engineering best practices Develop and maintain backend applications using Java and Spring Boot Perform code reviews and drive continuous code quality improvements Participate in technical analysis, architecture discussions and solution design Remove technical blockers and support efficient delivery across the development pipeline Participate in Scrum ceremonies and collaborate closely with cross-functional teams Take ownership of technical decisions and proactively identify improvement opportunities You're ideal for this role if you have: At least 7 years of experience in Java backend development Experience acting as a Tech Lead or leading technical initiatives within development teams Strong expertise in Core Java (Java 11–25), including JDBC, concurrency and memory management Solid experience with Spring Framework (Spring Boot 2–4) Experience with JPA (Hibernate) and Oracle databases, including SQL optimization Knowledge of messaging systems, REST APIs, OpenAPI (Swagger) and API First approach Strong understanding of microservices architecture, Git, Maven and Scrum Good understanding of backend security principles and software quality practices Experience writing high-quality unit and integration tests Fluent English It is a strong plus if you have: Experience with Kubernetes Experience with OpenSearch Experience with Ansible Experience with Jenkins, Sonar or other build and deployment automation tools Experience working in geographically distributed engineering teams Experience participating in technical architecture and solution design

🏢 Summary: Java Tech Lead role focused on leading backend development and technical direction for enterprise applications in a hybrid work model. The position combines hands-on Java and Spring Boot development with architecture, mentoring, code quality, and Agile collaboration responsibilities. Candidates will work on secure, scalable microservices solutions while supporting engineering excellence and delivery efficiency. 🗂️ Requirements: 7+ years of Java backend development experience, Experience as Tech Lead or technical initiative lead, Core Java expertise, Spring Framework and Spring Boot experience, JPA and Hibernate knowledge, Oracle and SQL optimization experience, REST API development experience, OpenAPI knowledge, Microservices architecture knowledge, Git proficiency, Maven proficiency, Scrum experience, Backend security knowledge, Unit and integration testing experience, Fluent English 📃 Skills: Java, Spring, SpringBoot, JDBC, JPA, Hibernate, Oracle, SQL, REST, OpenAPI, Swagger, Microservices, Git, Maven, Scrum, Kubernetes, OpenSearch, Ansible, Jenkins, Sonar 🏢 Description: Empower innovative software solutions — shape the future of Java development! Warszawa-based opportunity with hybrid work model (up to 4 remote days per week) As a Java Tech Lead within our client's software development team, you will be working for a leading industry innovator delivering mission-critical enterprise applications. You will combine hands-on backend development with technical leadership, driving architectural decisions, mentoring developers, and ensuring engineering excellence across multiple applications. Working closely with stakeholders and Agile teams, you will remove delivery blockers, define technical direction, and build secure, scalable Java solutions that support long-term business growth and operational efficiency. Your main responsibilities: Lead technical solution discussions with business and engineering stakeholders Define technical direction and critical delivery paths for development initiatives Mentor developers and support the team's technical growth Ensure high-quality, secure and maintainable software aligned with engineering best practices Develop and maintain backend applications using Java and Spring Boot Perform code reviews and drive continuous code quality improvements Participate in technical analysis, architecture discussions and solution design Remove technical blockers and support efficient delivery across the development pipeline Participate in Scrum ceremonies and collaborate closely with cross-functional teams Take ownership of technical decisions and proactively identify improvement opportunities You're ideal for this role if you have: At least 7 years of experience in Java backend development Experience acting as a Tech Lead or leading technical initiatives within development teams Strong expertise in Core Java (Java 11–25), including JDBC, concurrency and memory management Solid experience with Spring Framework (Spring Boot 2–4) Experience with JPA (Hibernate) and Oracle databases, including SQL optimization Knowledge of messaging systems, REST APIs, OpenAPI (Swagger) and API First approach Strong understanding of microservices architecture, Git, Maven and Scrum Good understanding of backend security principles and software quality practices Experience writing high-quality unit and integration tests Fluent English It is a strong plus if you have: Experience with Kubernetes Experience with OpenSearch Experience with Ansible Experience with Jenkins, Sonar or other build and deployment automation tools Experience working in geographically distributed engineering teams Experience participating in technical architecture and solution design

🏢 Summary: Hybrid Java Tech Lead role focused on leading backend development, defining technical architecture, and delivering secure, scalable enterprise applications using Java and Spring Boot. The position combines hands-on coding with mentoring, code quality oversight, and collaboration with Agile teams and stakeholders. Candidates will drive technical decisions and support long-term software delivery and operational efficiency. 🗂️ Requirements: 7+ years of Java backend development experience, Experience as Tech Lead or technical initiative lead, Core Java expertise, Spring Framework experience, JPA and Hibernate experience, Oracle and SQL optimization experience, REST API development knowledge, Microservices architecture knowledge, Git proficiency, Maven proficiency, Scrum experience, Unit and integration testing experience, Backend security knowledge, Fluent English 📃 Skills: Java, Spring, SpringBoot, JDBC, Concurrency, JPA, Hibernate, Oracle, SQL, REST, OpenAPI, Swagger, Microservices, Git, Maven, Scrum, Kubernetes, OpenSearch, Ansible, Jenkins, Sonar 🏢 Description: Empower innovative software solutions — shape the future of Java development! Warszawa-based opportunity with hybrid work model (up to 4 remote days per week) As a Java Tech Lead within our client's software development team, you will be working for a leading industry innovator delivering mission-critical enterprise applications. You will combine hands-on backend development with technical leadership, driving architectural decisions, mentoring developers, and ensuring engineering excellence across multiple applications. Working closely with stakeholders and Agile teams, you will remove delivery blockers, define technical direction, and build secure, scalable Java solutions that support long-term business growth and operational efficiency. Your main responsibilities: Lead technical solution discussions with business and engineering stakeholders Define technical direction and critical delivery paths for development initiatives Mentor developers and support the team's technical growth Ensure high-quality, secure and maintainable software aligned with engineering best practices Develop and maintain backend applications using Java and Spring Boot Perform code reviews and drive continuous code quality improvements Participate in technical analysis, architecture discussions and solution design Remove technical blockers and support efficient delivery across the development pipeline Participate in Scrum ceremonies and collaborate closely with cross-functional teams Take ownership of technical decisions and proactively identify improvement opportunities You're ideal for this role if you have: At least 7 years of experience in Java backend development Experience acting as a Tech Lead or leading technical initiatives within development teams Strong expertise in Core Java (Java 11–25), including JDBC, concurrency and memory management Solid experience with Spring Framework (Spring Boot 2–4) Experience with JPA (Hibernate) and Oracle databases, including SQL optimization Knowledge of messaging systems, REST APIs, OpenAPI (Swagger) and API First approach Strong understanding of microservices architecture, Git, Maven and Scrum Good understanding of backend security principles and software quality practices Experience writing high-quality unit and integration tests Fluent English It is a strong plus if you have: Experience with Kubernetes Experience with OpenSearch Experience with Ansible Experience with Jenkins, Sonar or other build and deployment automation tools Experience working in geographically distributed engineering teams Experience participating in technical architecture and solution design

🏢 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

🏢 Summary: Backend engineering role focused on designing and scaling assortment management systems in a distributed retail environment using Kotlin, Spring Boot, Kafka, AWS, and Kubernetes. The position involves leading backend architecture, building event-driven integrations, optimizing system reliability, and collaborating with product and engineering stakeholders. Candidates will also mentor engineers and drive best practices across scalable cloud-native platforms. 🗂️ Requirements: Degree in Computer Science or related technical field, 6+ years of backend development experience, Experience with Kotlin, Experience with Spring Boot, Strong knowledge of REST APIs, Experience with microservices, Experience with distributed systems, Experience with event-driven architectures, Hands-on experience with Kafka, Experience with asynchronous processing, Experience with AWS, Experience with Kubernetes, Experience with Amazon EKS, Experience with PostgreSQL, Knowledge of CI/CD, Experience with containerization, Knowledge of observability tooling, Knowledge of OAuth2, Knowledge of IAM, English proficiency, Polish proficiency, Availability for hybrid work in Katowice 📃 Skills: Kotlin, Spring, SpringBoot, REST, Microservices, Kafka, AWS, Kubernetes, EKS, PostgreSQL, CI/CD, Docker, OAuth2, IAM 🏢 Description: Responsibilities We are looking for a strong backend engineer who wants to design and scale core systems powering product and assortment management across a large retail ecosystem . You will take ownership of backend architecture and system evolution within the assortment management domain , building scalable services and integrations across a complex, event-driven enterprise landscape. You act as a technical driver within the team, working closely with architects, product owners and stakeholders to deliver robust, high-quality solutions. Your key responsibilities include: Design and develop scalable backend services , APIs and integrations using Kotlin and Spring Boot within distributed systems. Translate complex business and product data requirements into robust , maintainable and scalable system designs . Lead the design and evolution of event - driven architectures and asynchronous processing using Kafka . Design and integrate backend systems within AWS and Kubernetes -based enterprise environments. Drive data modeling and persistence strategies using PostgreSQL and cloud - native approaches. Act as a technical interface between business , product and engineering teams, leading solution design and backlog refinement . Drive engineering best practices , observability , reliability and architectural consistency across the platform. Lead troubleshooting , optimization and continuous improvement initiatives while mentoring less experienced engineers. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice your language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications Completed university degree in Computer Science or a comparable technical field. 6+ years of professional experience in backend development using Kotlin and Spring Boot in complex environments. Strong expertise in REST APIs , microservices , distributed systems and event - driven architectures . Deep hands-on experience with Kafka and asynchronous processing patterns in production systems. Strong experience with AWS and Kubernetes (including Amazon EKS ) in scalable environments. Solid experience with PostgreSQL and designing performant, reliable data models. Experience with CI/CD , containerization , observability tooling and modern security concepts (OAuth2, IAM). Strong communication skills in English and Polish , with readiness to work in a hybrid model in Katowice . About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 Summary: The offer is for a Backend Developer role focused on building and maintaining high-performance, low-latency systems for advertising and e-commerce platforms. The position involves developing scalable microservices and APIs using Kotlin and Spring Boot, working with real-time event processing, and contributing to system architecture and scalability. The role also includes production support and collaboration within cross-functional engineering teams. 🗂️ Requirements: 3+ years of professional experience in Java backend development, Very good knowledge of Kotlin, Very good knowledge of Spring Boot, Hands-on experience with microservices architecture, Practical experience with NoSQL databases, Experience with MongoDB, Experience building and maintaining backend systems and APIs, Understanding of system design and scalable architecture principles, Experience with high-performance and high-scale systems, English level B2, Polish level C1, Experience with AI-powered coding assistants, Work permit for EU and ability to work from EU region, Availability for occasional visits to Warsaw office 📃 Skills: Java, Kotlin, Spring, SpringBoot, Microservices, MongoDB, NoSQL, REST, API, AI, Claude, Copilot, Cursor 🏢 Description: 🟣 You will be: developing and maintaining backend systems for advertising and e-commerce platforms, building low-latency, high-performance services processing large volumes of data, developing scalable microservices and APIs using Kotlin and Spring Boot, working on real-time event processing and advertising targeting mechanisms, contributing to architecture design and system scalability improvements, collaborating with stakeholders and supporting engineering best practices, including code reviews and code quality standards, participating in technical readiness/on-call support for production incidents a few days per month. 🟣 Your profile: 3+ years of professional experience in Java backend development, very good knowledge of Kotlin and Spring Boot, openness to occasional visits to the Warsaw office (1–2 days per quarter), hands-on experience with microservices architecture, practical experience working with NoSQL databases, especially MongoDB, experience building and maintaining backend systems and APIs, understanding of system design and scalable architecture principles, experience working with high-performance and high-scale systems, strong analytical thinking and problem-solving skills, ability to collaborate effectively with stakeholders and engineering teams, good communication skills in English (B2) and Polish (C1), practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery. immediate availability or a short notice period is preferred. Work from the European Union region and a work permit are required. 🟣 Nice to have: experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work, interest in and familiarity with emerging AI-driven practices (e.g. agent-based workflows, automation patterns, AI-augmented development), with a willingness to explore and experiment beyond standard approaches. 🟣 Recruitment Process: CV review – HR call – Technical Interview – Client Interview – Decision 🎁 Benefits 🎁 ✍ Development: development budgets of up to 6,800 PLN, we fund certifications e.g.: AWS, Azure, access to Udemy, O'Reilly (formerly Safari Books Online) and more, events and technology conferences, technology Guilds, internal training, Xebia Upskill. 🩺 We take care of your health: private medical healthcare, multiSport card - we subsidise a MultiSport card, mental Health Support. 🤸‍♂️ We are flexible: B2B or employment contract, contract for an indefinite period.

🏢 Summary: The role involves designing and developing scalable backend systems in a microservices architecture using Java or Kotlin and Spring. The engineer will influence technical decisions while building payment and subscription platforms with event-driven communication and cloud-based solutions. The position includes working with modern architectural patterns and ensuring high code quality through testing and reviews. 🗂️ Requirements: Strong experience with Java and/or Kotlin, Solid knowledge of Spring and Spring Boot, Hands-on experience with SQL and relational databases, Experience with PostgreSQL, Proven experience with microservices architecture, Experience with event-driven systems, Practical experience with JUnit, Mockito, Testcontainers, Experience with AWS or GCP, Understanding of DDD, CQRS, Hexagonal Architecture, Experience with payment or subscription systems 📃 Skills: Java, Kotlin, Spring, SpringBoot, SQL, PostgreSQL, Microservices, Kafka, JUnit, Mockito, Testcontainers, AWS, GCP, DDD, CQRS, HexagonalArchitecture 🏢 Description: Senior Backend Engineer (Java/Kotlin) We are looking for an experienced Backend Engineer to join a team building modern, scalable systems based on a microservices architecture. This role offers real influence over technical decisions, system architecture, and the quality of delivered solutions—particularly within payment and subscription platforms. Responsibilities Design, develop, and maintain backend systems using Java or Kotlin and the Spring Framework Build and evolve microservices following DDD , CQRS , and Hexagonal Architecture principles Implement event-driven communication , ideally using Apache Kafka Work with relational databases ( PostgreSQL or other SQL databases ) and optimize queries Write unit and integration tests using JUnit, Mockito, and Testcontainers Contribute to the design and development of cloud-based solutions ( AWS or GCP ) Participate in code reviews and drive high engineering standards Collaborate closely with product and engineering teams to deliver business-critical features Requirements Strong experience with Java and/or Kotlin Solid knowledge of Spring / Spring Boot Hands-on experience with SQL and relational databases (preferably PostgreSQL ) Proven background in microservices-based architectures Experience with event-driven systems (Kafka is a strong plus) Practical experience with backend testing (JUnit, Mockito, Testcontainers) Experience working with cloud platforms ( AWS or GCP ) Good understanding of Domain-Driven Design (DDD) , CQRS , and Hexagonal Architecture Must-have: experience with payment systems and/or subscription-based platforms Nice to Have Experience working with high-scale, high-availability systems Knowledge of security and transactional data handling Background in product-driven, Agile environments

🏢 Summary: Senior Software Engineer role focused on designing, developing, and maintaining scalable e-commerce applications using Kotlin/Java and Spring. The position involves owning architecture, performance, and code quality while contributing hands-on to backend development. Hybrid work model in Warsaw with a strong emphasis on technical leadership and modern engineering practices. 🗂️ Requirements: 5+ years of professional software development experience, Strong proficiency in Kotlin or Java, Experience with Spring framework, Experience building and maintaining production systems, Ability to design scalable and high-performance architectures, Practical knowledge of Agile and DevOps principles, Experience contributing to code reviews and technical documentation 📃 Skills: Kotlin, Java, Spring, AWS, Agile, DevOps, REST, Microservices, Git, SQL 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. As a Senior Software Engineer , you will be a key member of a cross-functional team, responsible for designing, developing, and maintaining scalable e-commerce applications. You will leverage your expertise in Kotlin to deliver high-quality, efficient, and reliable solutions. Additionally, you will share your knowledge with team members and contribute to the technical standards of the projects. Key takeaways: Stack: Kotlin/Java, Spring, nice to have: AWS Salary: 23 000 PLN - 30 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location: ul. Grzybowska, Warsaw Recruitment process : A call with MOTIFE Recruiter Panel interviews with the team (coding, architecture and cross-collaboration interviews) Responsibilities: Technical Ownership Own the architecture, scalability, and performance of e-commerce applications as a senior technical expert. Design and develop clean, maintainable, and high-performance systems following best practices. Contribute directly to the codebase and actively participate in technical discussions, proposing robust solutions. Cross-Functional Collaboration Work closely with Product, Design, UX, and Program Management to deliver roadmap objectives. Help identify dependencies and remove technical blockers across engineering and partner teams. Culture & Continuous Improvement Promote engineering efficiency through automation, reuse, and modern design patterns. Support defining and analysing technical KPIs that contribute to continuous improvement. Champion code quality through code reviews, technical documentation, and knowledge-sharing activities. Requirements: Technical Expertise 5+ years of professional software development experience with production systems. Strong proficiency in Java or Kotlin and modern backend development ecosystems. Solid understanding of agile, lean, and DevOps principles and their practical application. Collaboration & Communication Strong interpersonal skills with empathy for engineers, customers, and stakeholders. Excellent communication skills, with fluent English, enabling clarity and alignment across teams. Passion for technology, elegant code, and innovative problem-solving. What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro