Senior Fullstack Java Engineer

🏢 Summary: Technical role focused on building and supporting back-end and front-end services within a global financial platform, using modern Java and React technologies. The position involves migrating legacy systems to microservices-based architectures, improving automation, and enhancing straight-through processing capabilities. Work is delivered in an agile environment with emphasis on scalability and cost optimization. 🗂️ Requirements: Proficiency in Java 11 or higher, Experience with Kubernetes, Experience with Git, Fluency in Unix-based systems and CLI, Strong knowledge of SQL and database technologies, Experience with RESTful microservices and APIs, Knowledge of HTTP web technologies, Experience with JavaScript, Understanding of React 📃 Skills: Java, React, Kubernetes, Git, Unix, SQL, Oracle, REST, API, HTTP, JavaScript, Spring, SpringBoot, WebSphere, Microservices 🏢 Description: Summary You will support the delivery of projects within the Clients platform, enabling seamless global financial transactions through effective analysis and agile design. Main Responsibilities Building and supporting services, microservices, and applications (both back-end & front-end) using Java versions 11/17/21 and ReactJS, while maintaining standard products. Reducing costs and complexity by migrating from mainframe and IBM WebSphere to modern approaches using integration layers such as APIs or microservices patterns. Decreasing testing costs by adopting automation testing frameworks. Increasing Straight-Through-Processing (STP) capabilities of services. Key Requirements Proficiency in Java (11+ essential, 17+ preferable). Experience with Kubernetes. Familiarity with Git. Fluency in Unix-based systems and command-line interfaces. Solid understanding of database technologies and SQL (Oracle preferred). Experience with RESTful microservices and APIs. Knowledge of HTTP Web technologies including JavaScript and preferably React. Nice to Have Experience working in a DevOps delivery team. Understanding of application monitoring. Knowledge of Spring/Spring Boot.

🏢 Summary: Hybrid Backend/Frontend Developer role in a global payment platform focused mainly on backend development (80%) with microservices architecture. The position involves building and maintaining RESTful services, migrating systems to microservices, and enhancing test automation in a DevOps environment. You will work with modern technologies to develop and optimize payment processing solutions. 🗂️ Requirements: Minimum 4 years of backend development experience, Very good knowledge of Java 11+, Experience with Kubernetes, Experience with Git, Very good knowledge of SQL, Experience with Oracle databases, Experience with RESTful microservices/APIs, Knowledge of Unix/Linux and CLI 📃 Skills: Java, Kubernetes, Git, SQL, Oracle, REST, Microservices, Unix, Linux, CLI 🏢 Description: O projekcie Dołączysz do zespołu rozwijającego globalną platformę płatniczą, obsługującą transfery środków, płatności dla dostawców, wynagrodzenia i podatki. System działa w produkcji od kilku lat i rozwijany jest długofalowo – większość czasu poświęcamy na rozwój nowych funkcjonalności, część na utrzymanie i optymalizację istniejących procesów. Pracujemy w duchu Agile i DevOps , w zespole rozproszonym regionalnie, w którym panuje bardzo dobra atmosfera współpracy. Projekt bazuje na nowoczesnym stacku technologicznym: Java 17/21, Spring Boot, REST APIs, SQL/Oracle, Kubernetes, JavaScript, React 18+ . W tej roli będziesz łączyć backend (80%) i frontend (20%) , dzięki czemu masz wpływ na całość działania systemu. Lokalizacja: praca hybrydowa – min. 2 razy w tygodniu z biura w Krakowie Twoje zadania Rozwój i wsparcie usług backendowych i frontendowych Budowa mikrousług i integracji API Migracja systemów do architektury microservices Zwiększanie automatyzacji testów i optymalizacja STP Utrzymanie standardów technologicznych i wsparcie rozwoju produktów Wymagania Min. 4 lata doświadczenia w programowaniu backend Bardzo dobra znajomość Java 11+ Kubernetes i Git Bardzo dobra znajomość SQL i technologii bazodanowych (Oracle preferowane) Doświadczenie w pracy z RESTful microservices / APIs Znajomość Unix/Linux i pracy w CLI Znajomość języka angielskiego na poziomie minimum B2 Komunikatywność i podejście problem solving Mile widziane Java 17+ JavaScript / React Doświadczenie w pracy w DevOps delivery team Znajomość Spring / Spring Boot Umiejętność pracy z monitoringiem aplikacji Doświadczenie w migracjach z mainframe / WebSphere Dlaczego warto Praca nad globalnymi usługami płatniczymi Realny wpływ na modernizację architektury i migrację systemów Łączenie backendu i frontendu w jednej roli Nowoczesne środowisko DevOps Udział w automatyzacji testów i zwiększaniu efektywności STP Hybrydowy tryb pracy (częściowo w biurze, częściowo zdalnie)

🏢 Summary: Senior technical role leading the design, optimization, and delivery of core business applications within a large IT transformation program. The position focuses on Java-based microservices, cloud and DevOps adoption, and collaboration with architecture and infrastructure teams. It combines hands-on development expertise with technical leadership across strategic platforms. 🗂️ Requirements: 6+ years of experience with Java microservices, Strong experience with JEE and Spring Boot, Experience in API and REST development, Proficiency in Kubernetes, Proficiency in Python, Experience with cloud migration projects, Hands-on experience with Oracle Database and WebLogic, Experience with messaging systems such as IBM MQ or WebSphere, Knowledge of IT security standards, Understanding of functional and technical architecture principles, Fluency in English 📃 Skills: Java, JEE, SpringBoot, REST, API, Microservices, Kubernetes, Python, Oracle, WebLogic, IBMMQ, WebSphere, DevOps, Agile, CloudMigration, Architecture, Security 🏢 Description: Key Responsibilities: Technical Leadership: Provides expert technical guidelines and support to IT analysts and development teams. Application Optimization: Identifies improvement and optimization opportunities for major core business applications. Strategic Delivery: Contributes to the delivery of high-priority projects within core business platforms. Infrastructure Collaboration: Partners with Architects, Security, and Infrastructure teams to design and evolve technical solutions. IT Transformation: Drives the adoption of DevOps, Agile methodologies, and AI readiness as part of broader group transformation programs. Technical Requirements: Java Expertise: Over 6 years of experience with Java microservices, JEE, Spring Boot, and API/REST development. Cloud & DevOps: Proficiency in Kubernetes and Python, with cloud migration expertise and DevOps knowledge listed as significant advantages. Data & Middleware: Experience with Oracle components (Database, WebLogic) and messaging flows such as IBM MQ or WebSphere. Standards & Architecture: Deep awareness of IT security standards, quality metrics, and functional/technical architecture principles. Professional Skills: Fluency in English with the ability to present complex technical topics to senior stakeholders.

🏢 Summary: Backend Java Developer role focused on building scalable, high-performance server-side applications using Spring Boot. The position involves database design, API development (REST/SOAP), search optimization with ElasticSearch, and maintaining high code quality within CI/CD environments. The role requires strong experience in the Java ecosystem and collaboration with cross-functional teams. 🗂️ Requirements: Minimum 4 years of backend development experience with Java, Strong hands-on experience with Spring Boot, Practical experience with Hibernate ORM, Experience with MS SQL databases, Experience with ElasticSearch or similar search engines, Proficiency in REST and SOAP API development, Experience working with JSON and XML, Basic knowledge of HTML, CSS, JavaScript, Experience with Git version control, Understanding of CI/CD pipelines and tools like Jenkins or TeamCity, Experience with Docker 📃 Skills: Java, Spring, SpringBoot, Hibernate, MSSQL, ElasticSearch, REST, SOAP, JSON, XML, HTML, CSS, JavaScript, Git, Jenkins, TeamCity, Docker 🏢 Description: Key Responsibilities Core Backend Development: Designing and developing robust, scalable, and high-performance server-side applications using Java and the Spring Boot framework. Database Management: Designing efficient database schemas, writing optimized queries, and managing data persistence using Hibernate and MS SQL. API Design & Integration: Building, integrating, and maintaining secure RESTful and SOAP web services (WebApi, WCF) to ensure seamless communication between systems. Search Optimization: Implementing and tuning efficient search and indexing solutions utilizing ElasticSearch. Code Quality & Mentorship: Writing clean, maintainable, and well-tested code while participating in code reviews to ensure alignment with industry best practices. Requirements Experience: Minimum 4 years of professional experience in backend development with a strong focus on the Java ecosystem. Frameworks & ORM: Deep understanding and hands-on experience with Spring Boot and Hibernate. Databases & Search: Practical knowledge of MS SQL and experience with ElasticSearch or similar search engines. Web Services & Formats: Proficiency in developing APIs (REST/SOAP) and working comfortably with JSON and XML data formats. Front-End Basics: General understanding of web technologies (HTML, CSS, JavaScript) to effectively collaborate with front-end teams. Tools & Version Control: Strong command of Git and a solid understanding of CI/CD workflows (e.g., Jenkins/TeamCity, Docker).

🏢 Summary: Frontend Developer role focused on building and maintaining modern web applications using React.js. The position involves creating responsive, user-centered interfaces, integrating RESTful APIs, and delivering scalable, maintainable frontend solutions. Emphasis is placed on performance, accessibility, and clean code standards. 🗂️ Requirements: 3–4+ years commercial frontend development experience, Strong hands-on experience with React.js, Proficiency in modern JavaScript (ES6+), Solid knowledge of HTML5 and CSS3, Experience with responsive design principles, Experience integrating RESTful APIs, Understanding of UI/UX best practices, Familiarity with state management, Experience with component-based architecture, Experience with Git and collaborative workflows, Ability to write scalable and maintainable code, Strong debugging and problem-solving skills 📃 Skills: React, JavaScript, ES6, HTML5, CSS3, REST, API, Git, UI, UX 🏢 Description: Responsibilities Develop and maintain modern web applications using React.js . Create responsive and intuitive user interfaces with a strong focus on usability and user experience. Connect frontend applications with RESTful APIs and backend systems. Translate business and design requirements into scalable frontend solutions. Write clean, reusable, and maintainable code following frontend development standards. Collaborate closely with designers, product owners, and backend engineers. Optimize application performance, accessibility, and cross-browser compatibility. Requirements 3–4+ years of commercial experience in frontend development. Strong hands-on experience with React.js and modern JavaScript (ES6+). Solid knowledge of HTML5, CSS3, and responsive design principles. Experience integrating APIs and working with backend services. Understanding of UI/UX best practices and user-centered design. Familiarity with state management and component-based architecture. Experience with Git and collaborative development workflows. Ability to write efficient, scalable, and well-structured frontend code. Strong problem-solving and debugging skills.

🏢 Summary: Oferta dotyczy roli Senior Java Developera odpowiedzialnego za rozwój i modyfikację aplikacji oraz serwisów w oparciu o Java 17 i Spring Boot. Stanowisko obejmuje projektowanie rozwiązań, tworzenie testów oraz dbanie o jakość, wydajność i niezawodność systemów. Kandydat będzie pracować z relacyjnymi bazami danych, integracjami oraz narzędziami CI/CD w środowisku zespołowym. 🗂️ Requirements: Minimum 5 lat komercyjnego doświadczenia w programowaniu w języku obiektowym, Doświadczenie w programowaniu w Java SE 17 (lub wyższa), Dobra znajomość Spring Boot, Dobra znajomość Spring Integration, Doświadczenie z relacyjnymi bazami danych, Znajomość Git, Znajomość Maven, Znajomość Jira, Znajomość Jenkins, Znajomość SOAP, Znajomość REST, Znajomość XML, Znajomość JSON, Umiejętność pracy w zespole 📃 Skills: Java, Spring, SpringBoot, SpringIntegration, SQL, Git, Maven, Jira, Jenkins, SOAP, REST, XML, JSON, GCP, BigQuery, CloudSQL, PubSub, React, Kafka, IBM, MQ, Docker, Kubernetes 🏢 Description: Zakres obowiązków: Implementowanie nowych oraz modyfikacja istniejących aplikacji i serwisów Tworzenie testów jednostkowych i integracyjnych dla rozwijanych aplikacji i serwisów Dbanie o wysoką jakość oprogramowania pod względem funkcjonalności, wydajności i niezawodności Dokumentowanie zaimplementowanych rozwiązań Analizowanie możliwych rozwiązań Udział w pracach projektowych Projektowanie nowych rozwiązań Wymagania: Min. 5-letnie doświadczenie komercyjne w programowaniu w języku obiektowym Doświadczenie w zakresie programowania w języku Java SE 17 (wersja 17 lub wyższa) Dobra znajomość Spring Boot/Spring Integration Doświadczenie z relacyjnymi bazami danych Znajomość narzędzi: Git, Maven, Jira, Jenkins Znajomość standardów: SOAP, REST, XML, JSON Umiejętność pracy w zespole Mile widziane: Doświadczenie w środowisku chmurowym GCP (w szczególności BigQuery, CloudSQL, Pub/Sub) Doświadczenie zawodowego w roli Frontend Developer (React) Doświadczenie w użyciu i stosowaniu kolejek/topików (Apache Kafka, Google Pub/Sub, IBM MQ) Praktyczna znajomość nierelacyjnych baz danych Praktyczne doświadczenie przy budowania skonteneryzowanych aplikacji (Antos, Kubernetes Engine, Docker) Praca przy projektach związanych z Campaign Management

🏢 Summary: The offer is for a Java Backend Developer role focused on building and maintaining microservices-based systems using Java and Spring technologies. The position involves developing REST APIs, working with containerized applications, and contributing to Agile delivery processes. The role centers on backend engineering, technical design, and collaboration within cross-functional teams. 🗂️ Requirements: Minimum 3+ years professional experience in backend development, Proficiency in Java 8+, Strong experience with Spring Boot and Spring technologies, Experience building microservices, Experience working with REST APIs, Knowledge of HTTPS, SFTP, REST and SOAP protocols, Understanding of microservices architecture and containerization, Experience with Kafka, Experience with Git and GitHub, Experience with Maven and Jenkins, Experience with MySQL and SQL databases, Familiarity with Linux, Experience working in Agile/Scrum environments 📃 Skills: Java, Spring, SpringBoot, REST, Microservices, Kafka, HTTPS, SFTP, SOAP, Linux, Git, GitHub, Maven, Jenkins, Jira, MySQL, SQL, Containerization, Agile 🏢 Description: Job Description: We are looking for skilled Java Backend Developers with strong experience in Java, Spring technologies, and microservices architecture. The ideal candidate will have hands-on expertise in backend development, REST APIs, containerized applications, and Agile delivery environments. Qualifications: Minimum 3+ years of relevant professional experience Proficiency in Java 8+, REST APIs, Spring Boot, and Spring technologies Experience in building microservices and working with Kafka Solid understanding of HTTPS, SFTP, REST API, and SOAP protocols Familiarity with Linux operating systems Strong understanding of microservices architecture and containerization Knowledge of Agile frameworks and principles Experience with Git/GitHub, GitHub Actions, Maven, Jenkins, and Jira Competence with MySQL and SQL databases Strong analytical and problem-solving skills Excellent written and verbal communication skills Ability to collaborate effectively with Product, QA, DevOps, and Agile/Scrum teams Mandatory Skills: Java (Spring) REST APIs Spring Boot and Spring Technologies HTTPS, SFTP, REST API, and SOAP protocols Microservices architecture and containerization Git/GitHub, GitHub Actions, Maven, Jenkins, Jira MySQL and SQL databases Desired Skills: Strong analytical and troubleshooting abilities Excellent communication skills Team collaboration experience within Agile/Scrum environments Roles & Responsibilities: Contribute to technical design and engineering activities Develop strong domain expertise within the project Analyse functional and technical requirements Support architecture and design discussions Collaborate with Architecture and Business teams Participate in development, design, code reviews, and implementation Follow engineering best practices and support continuous improvement initiatives Out of Scope: Creating product requirements Acting as Scrum Master or Product Owner Project Details: Primary focus is on Java backend development.

🏢 Summary: Fullstack Engineer role focused on building and scaling a global data-driven insights platform using modern JavaScript technologies. The position involves developing backend and frontend services, designing scalable databases, and influencing system architecture. You will work on high-load systems, ensure code quality, and contribute to technical decisions and mentoring. 🗂️ Requirements: 5+ years of experience with JavaScript and Node.js, 3+ years of experience with TypeScript and React or Next.js, Hands-on experience with scalable backend systems, Experience designing SQL and NoSQL database schemas, Ability to optimize queries for high-load systems, Knowledge of web fundamentals and networking concepts, Understanding of OWASP security best practices, Experience with AWS cloud services, Experience writing unit, integration, and e2e tests, Professional proficiency in English 📃 Skills: JavaScript, Node.js, TypeScript, React, Next.js, REST, GraphQL, SQL, NoSQL, AWS, CORS, OWASP, Microservices, Serverless 🏢 Description: We’re building a data-driven insights platform used by professionals worldwide. Our mission is to turn complex data into actionable insights and empower teams to make better decisions. We value ownership, technical excellence, and collaboration . If you enjoy building scalable systems, mentoring engineers, and shaping software architecture, you’ll fit right in. 🎯 Your mission Develop and maintain backend and frontend services (REST/GraphQL APIs, React apps) Design scalable database schemas (SQL & NoSQL) and optimize queries for high-load systems Collaborate with product, design, and DevOps teams to deliver robust solutions Write clean, tested code (unit, integration, e2e) Influence architecture and technical decisions Mentor other developers and share best practices 📌 You should have 5+ years in JavaScript / Node.js 3+ years in TypeScript + React/Next.js Hands-on experience with scalable backend systems Knowledge of web fundamentals & networking (CORS, browser behavior) Understanding of security best practices (OWASP) Experience with cloud services (AWS preferred) Strong communication skills in English Ability to work independently and take ownership ✨ Nice to have Experience with microservices / serverless architectures Data pipelines, scraping, or data-heavy applications Team leadership or mentoring experience Exposure to AI/ML integrations 💡 Why join us High-impact role on a global data platform Work with modern technologies and best engineering practices Autonomy & ownership in your work Collaborative and experienced team Competitive employment package and benefits.

🏢 Summary: Mid-level engineering role focused on developing and supporting Java and React-based microservices for a global payments platform, enabling secure and high-volume fund transfers. The position involves modernizing legacy systems into API-driven architectures and enhancing automation and transaction processing. Hybrid work model with strong emphasis on scalable, reliable financial systems. 🗂️ Requirements: Minimum 4 years of software development experience, Strong experience with Java 11+, Commercial experience with ReactJS, Experience building RESTful microservices and APIs, Hands-on experience with Kubernetes, Experience with Git, Experience with Unix-based systems, Strong knowledge of SQL and Oracle databases, Fluent English, Legal right to work in the European Union 📃 Skills: Java, ReactJS, Microservices, REST, API, Kubernetes, Git, Unix, SQL, Oracle, Spring, SpringBoot, JavaScript, WebSphere, Automation, DevOps 🏢 Description: Unleash innovation — shape the future of digital payments Krakow-based opportunity with hybrid work model (up to 3 remote days per week) As a Mid-Level Java & React Microservices Engineer – Payments Platform , you will be working for our client, a leading provider in the financial technology industry. You will contribute to the development and support of the Global Disbursements platform, enabling customers worldwide to move funds rapidly and securely—fueling seamless global transactions, paying suppliers, allocating salaries, settling taxes, and transferring money across multiple channels. Join us and be part of a transformative journey in modern payments technology, fostering innovation and growth in your career. Your main responsibilities: Building and supporting microservices and applications (both front-end and back-end) using Java 11/17/21 and ReactJS, ensuring high-quality standards and reliability. Migrating from mainframe systems and IBM WebSphere to modern API and microservices architectures to reduce costs and complexity. Implementing automation testing frameworks to decrease testing costs and increase efficiency. Enhancing Straight-Through Processing (STP) capabilities of services to streamline transaction flows. You're ideal for this role if you have: Minimum of 4 years of experience in software development, particularly in Java and React environments. Proficiency with Java 11+, preferably Java 17+. Hands-on experience with Kubernetes, Git, and Unix-based systems. Strong knowledge of database technologies and SQL, especially Oracle. Solid understanding of RESTful microservices and APIs. Experience working within a DevOps delivery team is a plus. Familiarity with application monitoring and Spring/Spring Boot is desirable. It is a strong plus if you have: Certifications or experience in automation testing frameworks. Knowledge of Web technologies and JavaScript. Language Required for the role: Fluent English Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. We offer you: ITDS Business Consultants is involved in various, innovative, and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes: Stable and long-term cooperation with very good conditions Enhance your skills and develop your expertise in the financial industry Work on the most strategic projects available in the market Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years Participation in Social Events, training, and work in an international environment Access to an attractive Medical Package Access to Multisport Program #GETREADY Internal job ID #8860 You can report violations in accordance with ITDS’s Whistleblower Procedure available here .

🏢 Summary: Long-term B2B role in the banking sector focused on developing and modernizing a global payment platform using Java and React. The position involves building and migrating services to microservices architecture, supporting DevOps practices, and improving automation and processing efficiency in a hybrid work model. 🗂️ Requirements: Strong expertise in Java 17+, Experience with Kubernetes, Knowledge of Git, Proficiency in Unix-based systems and CLI, Experience with SQL and databases, Understanding of RESTful microservices and APIs, Knowledge of HTTP, Experience with JavaScript and React, Experience in DevOps delivery team, Knowledge of Spring or Spring Boot 📃 Skills: Java, React, Kubernetes, Git, Unix, SQL, Oracle, REST, HTTP, JavaScript, Spring, SpringBoot, Microservices, APIs, DevOps 🏢 Description: Project information: Industry: banking Location & Hybrid Model Kraków – 5-6 days per month onsite (Kraków office) Warsaw – 5-6 days per month onsite (Warsaw office) Outside Kraków/Warsaw – 3 days per month from the Warsaw or Kraków office Rate: We’re open to your suggestions Contract : B2B, no end date, long-term cooperation Summary: We are looking for skilled individuals for the payment platform, which allows our customers and clients to move funds across the globe, pay their suppliers, credit salaries, pay taxes directly to authorities and transfer money via multiple channels. The purpose of the role is to support project delivery through high-quality analysis and Agile design artefacts, effective stakeholder management, and deep business insight for the solution delivery team, all enabled by appropriate tools and aligned with DevOps working practices. Responsibilities: Building and supporting services, microservices, and applications (back-end and front-end) in Java 11/17/21, ReactJS, while maintaining and preserving standard products. Reduce costs and complexity by migrating from mainframe and IBM WebSphere to a modern approach with an integration layer such as APIs or microservices patterns. Reduce testing costs by adopting automated testing frameworks. Increasing Straight-Trough-Processing (STP) capabilities of services. Requirements: Strong expertise in Java 17+ is a must Kubernetes & Git knowledge Fluency in navigating Unix-based systems and command-line interfaces is essential. Database technologies and SQL - Oracle preferred (nice-to-have) A working understanding of RESTful microservices and APIs HTTP Web technologies and JavaScript - React Having worked in a DevOps delivery team A desirable understanding of application monitoring. Knowledge of Spring/Spring Boot