Java/Kotlin Developer

🏢 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: Design and develop cloud-native, microservices-based applications as a Java Developer, owning the full product lifecycle from concept to production in a DevOps environment. The role focuses on building scalable and reliable solutions, using distributed messaging and modern CI/CD practices. You will lead technical design and ensure high standards of quality and performance. 🗂️ Requirements: Minimum 4 years of experience as Java Developer, Experience with microservices architecture, Experience with distributed message brokers, Experience with distributed event streaming platforms, Experience working in DevOps environment, Experience with CI/CD pipelines, Knowledge of RESTful services, Practical knowledge of design patterns, Knowledge of coding best practices, Experience in software quality assurance 📃 Skills: Java, Microservices, REST, DevOps, CICD, DistributedMessaging, EventStreaming, DesignPatterns, QA 🏢 Description: Digital Hangar (DH) is an innovation part of Lufthansa Group that aims to upgrade the Lufthansa Group to new digital business models, original product ideas and digital technologies for a digital future. As DH we do not aim in never-ending project coding, but in delivering working solutions that respond to Lufthansa Group needs. For that reason, updating our applications on production few times a week in a DevOps spirit is not an exception, it is daily work. Using the newest technologies and services like Storage Services, Kubernetes Services - it is not a WOW, it is a fact. Also, as Hangar, we must research new technologies and solutions from the IT market which will also be your responsibility. Are you ready for new challenges? Your responsibilities: As a Java Developer, you will lead the design and development of cloud-native applications using the latest tech stack. You will be responsible for the full lifecycle of our products, from concept to deployment and beyond, ensuring that they meet the highest standards of performance, scalability, and reliability. Our requirements: At least 4 years’ experience on a similar position, Experience in microservice approach, Experience with working with distributed message broker and distributed event streaming platform, Experience in working in DevOps and CI/CD, Knowledge of RESTful services, Practical knowledge of design patterns and good practices of coding, Expertise in software quality assurance, Excellent knowledge of Polish & English language, Ability to take full ownership of a product’s lifecycle, from development to production, ensuring continuous improvement and operational excellence, Excellent team collaboration skills and the ability to communicate technical concepts to both technical and non-technical stakeholders, Confidently propose new ideas and improvements, backed by data and research, Strong analytical and problem-solving abilities to troubleshoot and resolve issues efficiently, Readiness to work in a hybrid model - 2 days in the office in Gdańsk Nice to have: Azure knowledge, Familiarity with Angular, OpenTelemetry, Working in a cross-functional/T-shaped team, Projects in Agile Kanban, Scrum, SAFe.​ What do we offer? An international working environment, atmosphere that stimulates development, Individual career path, Employment contract, Salary in the range of: Senior position 10 000 - 21 000 zł gross (contract of employment) Regular position 8 000 - 16 000 zł gross (contract of employment) 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. Training opportunities and real growth paths. 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: 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: Senior Kotlin (Java) Developer role focused on building and operating microservices-based web applications and APIs within a cloud-driven environment. The position involves designing full-stack features, contributing to CI/CD pipelines, and ensuring high code quality in an agile setup. It offers the opportunity to shape developer experience through innovative, compliance-focused platforms. 🗂️ Requirements: Minimum 6 years of software development experience, Strong experience in Kotlin, Knowledge of Java and willingness to use Kotlin, Hands-on experience with API development, Experience with SQL and databases, Experience with HTML and JavaScript, Understanding of microservice architecture, Experience working in Agile environment, Experience with CI/CD practices, Proficiency with Bitbucket, Jira, Confluence, Fluent English (B2+ level), Legal right to work in the European Union 📃 Skills: Kotlin, Java, SQL, HTML, JavaScript, Microservices, API, CI/CD, Bitbucket, Jira, Confluence, AWS, Azure, GCP, Jenkins, Linux, AIX, WAS 🏢 Description: Unleash innovation in microservices and cloud — drive digital transformation with Kotlin expertise! Kraków-based opportunity with hybrid work model (up to 3 remote days per week). As a Senior Kotlin (Java) Developer , you will be working for our client, a leader in building a robust platform for managing software development compliance. You will contribute to cutting-edge web applications and APIs built with microservice architecture, supporting development teams across the organization. This role offers a unique chance to shape the future of developer experience and work at the forefront of technology innovation. Your main responsibilities: Collaborate with developers, testers, and other stakeholders to build and operate innovative products. Design, develop, and implement both front-end and back-end features aligned with business priorities. Work on APIs and microservices-driven solutions addressing impactful business challenges. Engage actively in an agile CI/CD environment to ensure rapid delivery and iteration. Participate in peer reviews and contribute to automated testing, maintaining high code quality. Proactively troubleshoot and resolve technical issues, providing excellent support to customers. You're ideal for this role if you have: At least 6 years of experience in software development. Strong experience in Kotlin, with Java knowledge and willingness to learn Kotlin. Hands-on experience with API development, SQL/databases, HTML/Javascript. Proficiency in collaboration tools such as Bitbucket, Jira, and Confluence. Solid understanding of microservice architecture and modern coding techniques. Agile methodology experience, including working with Jira and Confluence. Strong analytical and troubleshooting skills. Excellent interpersonal skills. Fluent in English (B2+ level). It is a strong plus if you have: (optional) Good working knowledge of cloud technologies like AWS, Azure, or GCP. Experience building CI/CD pipelines using Jenkins. Background in Systems Administration on Linux/AIX/WAS platforms. Language Required for the role: Fluent English (B2+ level). Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: 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: Senior Java Developer role focused on designing and modernizing distributed microservices systems for large-scale payment terminal management. The position involves building secure, scalable solutions using Java and related enterprise technologies, supporting system integration and legacy modernization. Hybrid work model in Warsaw with strong emphasis on system performance, security, and reliability. 🗂️ Requirements: 4+ years of Java development experience, Strong knowledge of Java 8+ and OOP, Experience with Spring and Spring Boot, Experience with Hibernate/JPA and JEE, Experience with RabbitMQ or message queues, Experience with RESTful APIs, Experience with relational databases (Oracle), Experience with distributed systems and system integration, Knowledge of JBoss or WildFly, Experience with Maven, Git, Gitlab, Jenkins, Nexus, Jira, Ability to create and review technical documentation, English level B2, Ability to work from Warsaw office 4 days per week, Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, JEE, RabbitMQ, REST, Oracle, Maven, Git, Gitlab, Jenkins, Nexus, Jira, JBoss, WildFly, CICD, DistributedSystems 🏢 Description: Unleash innovation in distributed systems — shape the future of microservices! Warsaw-based opportunity with hybrid work model. As a Senior Java Developer , you will be working for our client, an industry leader in terminal management systems, dedicated to creating robust solutions for managing millions of payment terminals worldwide. You will contribute to the design and implementation of cutting-edge IT solutions that enhance system performance, security, and scalability, driving digital transformation in the payments industry. Your main responsibilities: Design and implement IT solutions based on analytical and technical documentation Review and validate analytical documentation to ensure system integrity Create detailed technical documentation for development and maintenance Perform technical upgrades and work with legacy codebases Conduct regular vulnerability scans to ensure system security Collaborate on distributed systems development utilizing Spring, Hibernate, and RabbitMQ Support system integration with internal and external APIs and services Optimize and maintain application servers such as JBoss/WildFly Contribute to the migration and modernization of existing systems You're ideal for this role if you have: 4+ years of experience in Java development, with senior-level expertise Strong knowledge of Java 8+ and object-oriented programming principles Proven experience with Spring, Spring Boot, Hibernate/JPA, and JEE frameworks Practical knowledge of message queue systems, particularly RabbitMQ Familiarity with tools supporting development processes: Maven, Git, Gitlab, CI/CD pipelines, Jenkins, Nexus, Jira Working experience with relational databases, especially Oracle Practical knowledge of RESTful API design Experience with distributed systems and system integration Knowledge of application servers, including JBoss/WildFly Ability to review analytical documentation and create technical specifications Excellent command of Polish and English (B2 level) Ability to work from the Warsaw office 4 days per week + 1 day remote It is a strong plus if you have: Experience with scanning tools such as Fortify or Sonatype Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Developer role focused on designing and modernizing distributed microservices systems for large-scale payment terminal management. The position involves building and optimizing secure, scalable solutions using Java and related enterprise technologies in a hybrid Warsaw-based model. 🗂️ Requirements: 4+ years of Java development experience, Strong knowledge of Java 8+ and OOP, Experience with Spring and Spring Boot, Experience with Hibernate/JPA and JEE, Practical experience with RabbitMQ, Experience with Maven and Git, Experience with CI/CD and Jenkins, Experience with relational databases (Oracle), Experience designing RESTful APIs, Experience with distributed systems, Knowledge of JBoss or WildFly, Ability to work from Warsaw office 4 days per week, Fluent Polish and English (B2), Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, JEE, RabbitMQ, Maven, Git, Gitlab, CI/CD, Jenkins, Nexus, Jira, Oracle, REST, JBoss, WildFly 🏢 Description: Unleash innovation in distributed systems — shape the future of microservices! Warsaw-based opportunity with hybrid work model. As a Senior Java Developer , you will be working for our client, an industry leader in terminal management systems, dedicated to creating robust solutions for managing millions of payment terminals worldwide. You will contribute to the design and implementation of cutting-edge IT solutions that enhance system performance, security, and scalability, driving digital transformation in the payments industry. Your main responsibilities: Design and implement IT solutions based on analytical and technical documentation Review and validate analytical documentation to ensure system integrity Create detailed technical documentation for development and maintenance Perform technical upgrades and work with legacy codebases Conduct regular vulnerability scans to ensure system security Collaborate on distributed systems development utilizing Spring, Hibernate, and RabbitMQ Support system integration with internal and external APIs and services Optimize and maintain application servers such as JBoss/WildFly Contribute to the migration and modernization of existing systems You're ideal for this role if you have: 4+ years of experience in Java development, with senior-level expertise Strong knowledge of Java 8+ and object-oriented programming principles Proven experience with Spring, Spring Boot, Hibernate/JPA, and JEE frameworks Practical knowledge of message queue systems, particularly RabbitMQ Familiarity with tools supporting development processes: Maven, Git, Gitlab, CI/CD pipelines, Jenkins, Nexus, Jira Working experience with relational databases, especially Oracle Practical knowledge of RESTful API design Experience with distributed systems and system integration Knowledge of application servers, including JBoss/WildFly Ability to review analytical documentation and create technical specifications Excellent command of Polish and English (B2 level) Ability to work from the Warsaw office 4 days per week + 1 day remote It is a strong plus if you have: Experience with scanning tools such as Fortify or Sonatype Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Developer role focused on designing and owning the end-to-end architecture of a high-throughput, multitenant messaging platform in the travel industry. The position involves building event-driven microservices that generate traveler documents and deliver time-critical notifications via email and SMS at million-scale volumes. The role includes driving modernization, resilience, observability, and cloud-based scalability of the platform. 🗂️ Requirements: Expertise in Java and JVM performance, Experience designing large-scale event-driven systems, Hands-on experience with Spring Boot microservices, Experience with asynchronous messaging and API design, Experience with SQL and NoSQL databases and caching, Experience with Google GCP, Experience with high availability and disaster recovery architectures, Knowledge of email and SMS ecosystems and deliverability, Understanding of security and compliance standards (PII, GDPR, CAN-SPAM), Experience with static code analysis tools, Legal work permit in Poland 📃 Skills: Java, JVM, Spring, SpringBoot, SQL, NoSQL, GCP, OpenTelemetry, GitHubActions, Kubernetes, MTA, SPF, DKIM, DMARC, Veracode, CI, API, SMS, Email 🏢 Description: We are looking for a Senior Java Developer for our client, based in Kraków and surrounding areas. The project involves developing a large-scale communication platform in the travel industry that generates traveler documents and delivers time-critical notifications via email and SMS (over 1 million emails and approximately 100,000 SMS messages daily). The system is responsible for informing travelers about schedule changes, web check-in availability, and flight status (from 24 hours before departure up to the departure time), as well as collecting post-trip feedback. Own the end-to-end technical architecture for a multitenant, high throughput messaging platform: event driven services, template rendering, document generation, deliverability, and channel expansion Define service boundaries, data contracts, and platform SLOs (latency, throughput, deliverability); codify resilience (idempotency, retries, backoff, circuit breaking) and correctness (deduplication, exactly once where feasible). Lead design reviews and drive architectural RFCs/decision records; ensure documentation quality aligns with org guidelines. Guide modernization (e.g., Java 21 and newer, security hardening, SDLC improvements like GitHub Actions CI). Partner with Product to translate roadmap themes into platform epics (capacity, compliance, channel enablement); sequence tech debt with product outcomes. Elevate engineering standards, performance tuning, and observability (OpenTelemetry, metrics, logs, tracing). Collaborate with deliverability/infra teams on MTA configuration, SPF/DKIM/DMARC alignment, and reporting pipelines for at scale sending. Deep expertise in Java and JVM performance; significant experience designing event driven systems at millions per day scale. Handson Spring Boot microservices, asynchronous messaging, API design, and data stores (SQL/NoSQL, caching), Google GCP experience. Proven track record with HA, disaster recovery, multiregional patterns, and observability first design. Knowledge of email/SMS ecosystems (MTA, deliverability, anti abuse, link tracking, templating, internationalization). Security and compliance awareness (PII, GDPR, CAN-SPAM), static analysis workflows (e.g., Veracode). Ability to influence across product/engineering; excellent written design documentation. Nice to have Experience enabling new channels (RCS/WhatsApp), running canary/feature flags, and cost/perf optimization on cloud Kubernetes. Must possess a legal work permit in Poland General benefits - depends on the form of employment Hybrid work model combining office & remote work Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

🏢 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.