Java Backend Developer

🏢 Summary: Software Engineer role focused on developing and maintaining aviation charting applications that enhance flight planning reliability and efficiency. The position involves designing, coding, testing, and reviewing .NET-based solutions within an agile, globally distributed team. The role emphasizes high software quality and adherence to established development processes. 🗂️ Requirements: Minimum 3 years of experience with C#, Proficiency in C# and VB.NET, Strong knowledge of T-SQL, Experience with .NET Framework 4.8 and .NET 6, Experience with ASP.NET and Entity Framework, Practical experience with WinForms and WPF (MVVM), Experience with DevExpress, Experience with SQL Server and PostgreSQL, Experience with Git, Experience with CI/CD pipelines, Experience working in Agile methodologies 📃 Skills: C#, VB.NET, TSQL, .NET, ASPNET, EntityFramework, WinForms, WPF, MVVM, DevExpress, SQLServer, PostgreSQL, Git, CICD, Agile 🏢 Description: The future of aviation is driven by software and data. As part of our software team, you will work on charting applications used in the aviation industry. In an agile environment with a globally distributed team, you will help design and maintain solutions that improve the reliability and efficiency of flight planning. You can expect a friendly, multicultural atmosphere focused on delivering value to the aviation community. Who are we? Lufthansa Systems Poland is acclaimed and widely recognized provider of superior services and IT solutions for the aeronautical, logistic and financial industries. As a part of the Lufthansa Group we implement technological solutions and dedicated services. Your responsibilities: Designing, developing, and testing software components. Following the company’s software development processes and organizational guidelines. Participating in code reviews. Ensuring software quality through testing and QA practices. Performing various additional development-related tasks as needed. Our requirements: Minimum of 3 years of experience in programming with C#. Proven experience with agile methodologies, Git, and CI/CD pipelines. Strong communication skills and ability to work in a team. Proficiency in C#, VB.NET , and T-SQL as primary programming languages. Experience working with .NET Framework 4.8, .NET 6, ASP.NET , and Entity Framework. Practical knowledge of UI development using WinForms, WPF (MVVM), and DevExpress. Experience with relational databases, particularly SQL Server and PostgreSQL. Very good command of English (written and spoken). Readiness to work in a hybrid model: 2 days in the office in Gdańsk. Nice to have: Knowledge of aviation industry regulations and standards is a strong advantage. What we offer: An international working environment, atmosphere that stimulates development, Individual career path, Stable employment under an employment contract, Lufthansa Group membership benefits, Salary in the range of: Standard position 8 000 - 16 000 zł gross Senior position 10 000 - 21 000 zł gross Flexible working time and place adjusted to employee’s needs. Possibility of starting your workday between 07:00 and 11:00. Support for your passion for sports within the local activity group and co-financing Multisport cards. Private medical care for employees and their family members. Life insurance. Parking space for employees. Extra social benefits. Holiday funds. Sharing the costs of holidays for kids. Sharing the commuting costs. Modern office in Oliwa – great location and comfortable workspace. Atmosphere – small teams, high independence, real impact on the project.

🏢 Summary: Development and maintenance of backend services for Lufthansa’s Digital Hangar, focused on enhancing passenger-facing web and mobile platforms. The role involves building REST APIs, integrating distributed systems, and working within an agile international team using modern Java and Kotlin technologies. 🗂️ Requirements: Experience with HTTP-based REST APIs, Strong knowledge of Spring Framework including WebFlux, Proficiency in Kotlin, Experience with Git, Experience with CI/CD pipelines, Experience with Gradle, Knowledge of SQL databases, Knowledge of NoSQL databases 📃 Skills: Java, Kotlin, Spring, WebFlux, REST, HTTP, Git, Gradle, CICD, SQL, NoSQL, MySQL, CosmosDB, Kafka, Redis, Testcontainers, MockK, Bruno, Mockoon, Azure 🏢 Description: We are looking for a Standard or Senior Java Developer with good knowledge of Kotlin for Lufthansa’s Digital Hangar Department. The focus of Digital Hangar (DH) is the improvement of passenger experience throughout the whole journey. The projects that are in focus are Lufthansa Group (Lufthansa, SWISS, Austrian and Brussels) main web portals, mobile apps (iOS and Android) and B2B platforms. On top we’re developing our own R&D solutions within Hangar initiatives. We are focused on the continuous development of our software engineers and therefore you can expect: Experienced developers to learn from, Weekly dev talks, time for refactoring and improvements, Dev team has freedom to choose frameworks/libraries, Individual development plan with trainings, Possibility to go to conferences. Are you interested in joining a group of software enthusiasts, working in an international agile team setup, creating products that make the difference in the entire airline industry - then apply now! Who are we? Lufthansa Systems Poland is acclaimed and widely recognized provider of superior services and IT solutions for the aeronautical, logistic and financial industries. As a part of the Lufthansa Group we implement technological solutions and dedicated services. Your responsibilities: Implement and maintain REST APIs, integrate with systems such as Kafka and Redis, and work with SQL and NoSQL databases. Troubleshooting, debugging, and resolving issues in a complex distributed system, utilizing the existing structured logging and monitoring tools. Collaborate within an international, agile team, participate in code refactoring, choose appropriate tools and frameworks, and develop your skills through training and conferences. Our requirements: Experience working with HTTP-based REST APIs. Solid knowledge of Spring Framework (including Spring WebFlux) and Kotlin. Experience with Git, CI/CD, and Gradle. Knowledge of NoSQL and SQL databases (Azure Cosmos DB, MySQL). Open mindedness, good communication skills, team spirit. Excellent English language skills. Readiness to work in a hybrid model: 2 days in the office in Gdańsk. Nice to have: Experience with Kafka and Redis. Knowledge of testing tools like Testcontainers and MockK. Familiarity with API support tools like Bruno, Mockoon. Experience with mobile app clients (iOS, Android). Knowledge of Server-Driven UI (SDUI) principles. Experience with Azure or other public cloud services. Comfort using AI coding assistants (e.g., GitHub Copilot). What we offer: An international working environment, atmosphere that stimulates development. Individual career path. Stable employment under an employment contract. Lufthansa Group membership benefits. Flexible working time and place adjusted to employee’s needs. Possibility of starting your workday between 07:00 and 11:00. Support for your passion for sports within the local activity group and co-financing Multisport cards. Private medical care for employees and their family members. Life insurance. Parking space for employees. Extra social benefits. Holiday funds. Sharing the costs of holidays for kids. Sharing the commuting costs. Modern office in Oliwa – great location and comfortable workspace.

🏢 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: The offer is for an iOS Developer responsible for building and maintaining modern mobile applications for major airline brands, focusing on high-quality user experience and backend integration. The role involves architectural design, CI optimization, and close collaboration with cross-functional teams in an international environment. It includes active participation in technical decisions and continuous improvement of development processes. 🗂️ Requirements: Minimum 2 years of experience in similar position, Experience in Swift, Knowledge of design and UX patterns, Experience with workflow tools, Experience with Continuous Integration, Ability to integrate with REST APIs, Participation in application architecture design, English proficiency for daily communication, Availability to work hybrid model (2 days in Gdańsk office) 📃 Skills: Swift, SwiftUI, UIKit, Xcode, SPM, Combine, CoreData, REST, XCTest, Quick, Nimble, Wiremock, Git, Fastlane, Azure, DevOps, Jira, CI 🏢 Description: The focus of Digital Hangar (DH) is the improvement of passenger experience throughout the whole journey. The projects that are in focus are Lufthansa Group (Lufthansa, SWISS, Austrian and Brussels) main web portals, mobile apps (iOS and Android) and B2B platforms. On top we’re developing our own R&D solutions within Hangar initiatives.​ We are focused on the continuous development of our software engineers and therefore you can expect: - Experienced developers to learn from, - Weekly dev talks, time for refactoring and improvements, - Dev team has freedom to choose frameworks/libraries, - Individual development plan with trainings, - Possibility to go to conferences. - Our technology stack: Swift 6; Xcode 16; SPM; UIKit & SwiftUI; Combine; Quick & Nimble for testing; GIT; Fastlane; Core Data; communication with REST API; XCTest; Wiremock; Azure Devops. Who are we? Lufthansa Systems Poland is acclaimed and widely recognized provider of superior services and IT solutions for the aeronautical, logistic and financial industries. As a part of the Lufthansa Group we implement technological solutions and dedicated services. Your responsibilities: Developing modern iOS applications using Swift and SwiftUI. Implementing design and UX patterns to deliver high-quality and user-friendly solutions. Integrating apps with backend systems and external APIs. Collaborating with project managers, developers, and QA teams. Participating in the design of application architecture and making key technical decisions. Implementing and optimizing Continuous Integration (CI) processes. Our requirements: At least 2 years of experience in a similar position. Experience in Swift. Practical knowledge of design & UX patterns. Experience in workflow tools (Jira). Experience in Continuous Integration. Good English skills for daily communication. Enthusiasm, curiosity and creativity. Open mind and open communication. Solution oriented working. Motivation to bring yourself and the team a step further. Readiness to work in a hybrid model - 2 days in the office in Gdańsk. Nice to have: Experience in working in Scrum/SAFe. Work experience in international environment. What we offer: An international working environment, atmosphere that stimulates development. Individual career path. Stable employment under an employment contract. Salary for : senior level range of 10 000 - 21 000 zł gross, standard level range of 8 000 - 16 000 zł gross, Lufthansa Group membership benefits. Flexible working time and place adjusted to employee’s needs. Possibility of starting your workday between 07:00 and 11:00. Workplace adjusted to employee's needs. Support for your passion for sports within the local activity group and co-financing Multisport cards. Private medical care for employees and their family members. Life insurance. Modern office in Oliwa – great location and comfortable workspace. Atmosphere – small teams, high independence, real impact on the project.

🏢 Summary: The role focuses on building and maintaining high-quality data processing pipelines, exploring datasets, and creating dashboards to support digital products within the aviation domain. You will work with modern data architectures and cloud-based tools, collaborating with cross-functional teams to deliver scalable data solutions. The position combines data engineering and analytics in an agile environment. 🗂️ Requirements: Minimum 3 years of commercial experience in Data Engineering, Data Analytics or Data Processing, Strong knowledge of Python, Strong knowledge of SQL, Experience with Git, Experience with Pytest, Experience with Numpy, Experience with Pandas, Experience with PySpark, Experience with Azure Data Factory, Experience with Databricks, Practical experience in data understanding, cleaning and analysis, Experience with structured databases, Experience with Modern Data Architecture (Data Lake), Experience in creating data visualizations, Experience in data extraction from APIs, Experience with VCS and CI/CD tools, Very good command of English, Willingness to work onsite in Gdańsk two days a week or relocate, Willingness to travel once per quarter 📃 Skills: Python, SQL, Git, Pytest, Numpy, Pandas, PySpark, Azure, DataFactory, Databricks, DataLake, CI/CD, VCS, APIs 🏢 Description: The focus of Digital Hangar is the improvement of passenger experience throughout the whole journey. The projects that are in focus are Lufthansa Group (Lufthansa, SWISS, Austrian and Brussels) main web portals, mobile apps (iOS and Android) and B2B platforms. Every day we confront the reality of delivering unique products. Our mission is to boldly bring digital solutions to the avionics business world. Who are we? Lufthansa Systems Poland is acclaimed and widely recognized provider of superior services and IT solutions for the aeronautical, logistic and financial industries. As a part of the Lufthansa Group we implement technological solutions and dedicated services. Your responsibilities: As a member you will be responsible for delivering high quality data processing pipelines, exploring data sets and creating Dashboards. In this role, you will have the exciting opportunity to work with both the Middleware team and the Digital Hangar. Our requirements: At least 3 years of commercial experience in Data Engineering/ Data Analytics/ Data Processing, Knowledge of: Python, SQL, Git, Pytest, Numpy, Pandas, PySpark, Experience in Azure Data Factory and Databricks, Practical knowledge of data understanding, cleaning and analyzing, structured databases, Experience in Modern Data Architecture (Data Lake), Experience in creating data visualizations, Experience in data extraction from APIs, Working knowledge of modern development tools and processes (VCS, CI/CD), Very good command of English language, Proactive attitude and the ability to work as a team player, The ability to think beyond the current scope of the project, Experience actively participating in a Scrum team by bringing in new solutions, Willingness to travel once per quarter, Willingness to upskill on your own initiative and deriving further insights from data, Willingness to come to our office in Gdańsk two days a week or relocate to Trójmiasto Nice to have: Knowledge and experience with understanding of software development processes. What do we offer? An international working environment, atmosphere that stimulates development, Individual career path, Stable employment under an employment contract, Salary in the range of: Standard position 8 000 - 16 000 zł gross Senior position 10 000 - 21 000 zł gross Lufthansa Group membership benefits, Flexible working time and place adjusted to employee’s needs. Possibility of starting your workday between 07:00 and 11:00. Support for your passion for sports within the local activity group and co-financing Multisport cards. Private medical care for employees and their family members. Life insurance. Parking space for employees. Extra social benefits. Holiday funds. Sharing the costs of holidays for kids. Sharing the commuting costs. Modern office in Oliwa – great location and comfortable workspace. Atmosphere – small teams, high independence, real impact on the project.

🏢 Summary: Long-term B2B opportunity for a Senior Java Developer to modernize and develop a large-scale CRM platform, focusing on migrating a legacy JBoss monolith to a Spring Boot-based domain-driven architecture. The role involves backend development, system modernization, database migration, and collaboration within cross-functional teams. Work is delivered in a hybrid model within an established development department. 🗂️ Requirements: Commercial experience with Java 21+, Experience with REST API development, Strong knowledge of Spring and Spring Boot, Experience with unit and integration testing (Mockito, Testcontainers, JUnit 5), Proficiency with Git, Experience using Swagger, Ability to work with IntelliJ, Experience with JBoss or JEE5, Knowledge of SQL (Postgres or Sybase), English level B2/C1 📃 Skills: Java, REST, Spring, SpringBoot, JUnit, Mockito, Testcontainers, Git, Swagger, IntelliJ, JBoss, JEE, SQL, Postgres, Sybase, React, Kubernetes, Jenkins, JBPM, Swing, JavaFX 🏢 Description: Client: A leading German telecommunications and IT corporation Start date: ASAP Locations: Warszawa, Poznań, Lublin Work model: hybrid with 3 days/week from the office Engagement: Long-term Form of cooperation: B2B, full-time Working hours: Standard business hours About our client: A leading German telecommunications and IT corporation, recognized for innovative solutions in cloud computing, web hosting, and internet services, is expanding its European Technology Center in Poland. The company is building strong development teams in Warsaw, Poznan, and Lublin to support its long-term digital transformation initiatives. About the project & team: You will join an established development team consisting of three experienced Java developers and one test manager. This team is part of a larger department that includes over 20 developers across several cross‑functional teams. The department is responsible for the company’s core CRM platform, which includes multiple frontends (Java Swing, JavaFX, React) and numerous backend services built in technologies such as JBoss 4/7, WildFly 10, Spring Boot, and Spring Batch. The primary focus of your future team is the modernization of the CRM system, including the migration of business logic from a legacy monolithic JBoss 4 application to a modern, domain‑driven architecture using Spring Boot. Future development includes building new React-based frontends, enhancing backend services, and modernizing database layers (e.g., Sybase migrations). You will work within a stable, collaborative setup, contributing to high-impact solutions used across the organization. Must‑have skills: Java >21 REST Spring / Spring Boot Unit- and Integrations-Tests (Mockito, Testcontainers, JUnit 5) Git Swagger IntelliJ Nice to have skills: Kubernetes JEE5 (JBOSS) SQL (Optimal: Postgres, Sybase) Java Swing or JavaFX JBPM Jenkins (CI/CD) English Level: B2/C1 Responsibilities: Develop and maintain backend services within a large CRM platform. Migrate business logic from a monolithic JBoss 4 system to Spring Boot microservices. Participate in building new frontends (React) and extending backend functionalities. Contribute to database modernization, including migration of Sybase logic. Collaborate closely with developers and the team’s test manager. Ensure high code quality through unit and integration testing. Use best practices in CI/CD, version control, and modern development standards. What We Offer: Competitive compensation: up to 120 PLN/h netto on a B2B contract Flexible settlements: Payments issued in your preferred form Fast invoicing: Short 14‑day payment terms Comprehensive healthcare: Extended private medical care package My Benefit platform: Access to a cafeteria system including Multisport cards and prepaid vouchers (e.g., IKEA, Zalando, Notino, and more)

🏢 Summary: Junior Java Developer role focused on designing and implementing airline API integrations for a global flight booking platform. The position involves building microservices-based solutions, improving integration and testing processes, and supporting CI/CD and production environments. This is a fully remote opportunity within Poland with exposure to cloud technologies. 🗂️ Requirements: Experience with Java and object-oriented programming, Basic knowledge of Spring Core, Basic knowledge of Spring Boot, Understanding of microservices architecture, Experience with RESTful APIs, Familiarity with relational databases, Basic SQL knowledge, Experience with Git, Knowledge of Maven or Gradle, Understanding of Docker and containerization, Willingness to work with AWS services, Understanding of SDLC and testing principles, Basic troubleshooting and debugging skills, Ability to participate in production support rotation, English proficiency, Russian proficiency 📃 Skills: Java, Spring, SpringBoot, Microservices, REST, SQL, Git, Maven, Gradle, Docker, AWS, SDLC, Testing 🏢 Description: We are looking for a Junior Java Developer for a global travel technology company. Your task will be to design and implement solutions that streamline the integration of new airlines using various API technologies (NDC, LCC, custom). The project focuses on flight booking platforms and aims to improve the experience of millions of travelers and expand the airline partnership network. This role offers fully remote work within Poland. Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Design and implement technical solutions for new and existing product development Develop and promote implementation and rollout plans for airline integrations Analyze and evaluate existing integration approaches and propose improvement plans Assess current testing approaches for integration and performance and recommend enhancements Ensure stable and fast delivery processes across the development lifecycle Contribute to and setup CI/CD processes for streamlined deployments Participate in mentorship of fellow engineers to solve complex technical challenges Establish and maintain monitoring and alerting systems for production environments Participate in 12/7 production support on a rotation schedule Requirements Experience with Java programming and object-oriented development Basic knowledge of Spring Core and Spring Boot frameworks Understanding of microservices architecture and RESTful API development Familiarity with relational databases and basic SQL knowledge Experience with version control systems, particularly Git Basic understanding of build tools such as Maven or Gradle Knowledge of containerization concepts with Docker Willingness to learn cloud technologies, particularly AWS services Understanding of software development lifecycles and testing principles Basic troubleshooting and debugging skills Good English communication skills Good Russian communication skills Eagerness to learn new technologies and grow professionally Nice to have Any exposure to Spring Framework ecosystem (SpringBoot, SpringCloud) Basic knowledge of NoSQL databases (DynamoDB, MongoDB) Familiarity with CI/CD concepts and tools like Jenkins Understanding of logging and monitoring principles Experience with Splunk, Kubernetes or Kotlin Previous internship or project experience in software development We offer/Benefits 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. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 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: Opportunity to join a long-term project for a leading insurance company, focused on developing modern backend systems in Java and Spring within an Agile environment. The role involves building and maintaining scalable applications, contributing to system architecture, and ensuring high code quality. Hybrid work model with collaboration in an experienced development team. 🗂️ Requirements: Minimum 3 years commercial experience with Java, Experience with Spring and Spring Boot, Experience with Hibernate, Experience with Apache Kafka, Knowledge of Git, Knowledge of Maven, Experience in writing unit tests, Knowledge of Object-Oriented Programming, Knowledge of Functional Programming, Good knowledge of SQL 📃 Skills: Java, Spring, SpringBoot, Hibernate, Kafka, Git, Maven, SQL, OOP, FP, Docker, Kubernetes, Helm, RabbitMQ, ElasticSearch, SpringCloud 🏢 Description: Java Developer Dołącz do zespołu realizującego kluczowe projekty dla jednej z największych firm ubezpieczeniowych w Polsce. Szukamy osoby, która chce rozwijać nowoczesne rozwiązania backendowe, współtworzyć architekturę systemów i pracować w środowisku Agile z wykorzystaniem technologii Java oraz Spring. Lokalizacja: 1 dzień w tygodniu z biura (Warszawa Wola) Twoje zadania Rozwój i utrzymanie aplikacji opartych o Java i Spring Boot. Projektowanie oraz implementacja nowych funkcjonalności we współpracy z zespołem Agile. Współudział w tworzeniu rozwiązań odpowiadających na potrzeby biznesowe. Dbanie o wysoką jakość kodu, testowanie oraz udział w procesach wdrożeniowych. Udział w planowaniu prac zespołu oraz code review. Współpraca z analitykami, testerami i innymi programistami przy realizacji kolejnych wydań. Nasze wymagania Minimum 3 lata doświadczenia komercyjnego z Java, Spring, Spring Boot oraz Hibernate. Doświadczenie w pracy z Apache Kafka. Znajomość Git oraz Maven. Doświadczenie w pisaniu testów jednostkowych. Znajomość paradygmatów Object-Oriented Programming oraz Functional Programming. Mile widziane Docker, Kubernetes, Helm. RabbitMQ oraz ElasticSearch. Spring Cloud. Dobra znajomość SQL. Oferujemy Współpracę przy stabilnym i długoterminowym projekcie dla lidera rynku ubezpieczeniowego. Pracę w doświadczonym zespole i udział w rozwoju nowoczesnych rozwiązań IT. Elastyczny model pracy hybrydowej. Preferencyjne pakiety benefitowe do wykupienia, w tym Multisport oraz Lux Med .

🏢 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!