Java Full-Stack Engineer

🏢 Summary: Senior Java Full-Stack Engineer role focused on designing and building scalable cloud-native applications with modern frontend and backend technologies. The position involves developing robust APIs and services, contributing to architecture decisions, and improving platform reliability, performance, and security. This is a long-term remote B2B contract within a senior engineering environment. 🗂️ Requirements: Senior-level experience in software engineering, Strong hands-on experience with Java, Experience in backend development, Full-stack development experience with modern frontend frameworks, Understanding of cloud platforms and cloud-native architectures, Experience building production-grade, scalable systems, Ability to design APIs and backend services, Knowledge of containers and CI/CD practices 📃 Skills: Java, GCP, AWS, Azure, Kubernetes, Docker, CI/CD, APIs, Microservices, Frontend, Cloud, DevOps 🏢 Description: We are seeking a highly skilled Java Full-Stack Engineer to join our engineering team in building and evolving cloud-based products. The ideal candidate will possess extensive experience in software development, particularly with Java and modern frontend technologies. A strong understanding of cloud platforms, specifically GCP, is highly desirable, along with the ability to work independently within a senior engineering environment. What we offer: Remote Role Long Term B2B Contract Rate: 170-190 PLN/H + VAT Main Responsibilities Design, build, and maintain scalable full-stack applications using Java and modern frontend technologies. Develop robust backend services, APIs, and integrations. Work with cloud-native architectures and deployment models. Contribute to technical architecture and engineering decision-making. Improve reliability, performance, security, and maintainability of the platform. Collaborate closely with product, design, and engineering colleagues. Mentor other engineers and help raise the technical bar across the team. Explore and apply modern development practices, including AI-assisted and agentic coding workflows where relevant. Key Requirements Strong senior-level experience as a software engineer. Deep hands-on experience with Java and backend development. Solid full-stack development experience, including modern frontend frameworks. Good understanding of cloud platforms and cloud-native engineering. Ability to work independently and make sound technical decisions. Strong communication skills and the ability to collaborate across teams. Experience building production-grade systems with high standards for quality, scalability, and maintainability. Nice to Have Experience with Google Cloud Platform , though AWS or Azure experience is also relevant. Experience with Kubernetes, containers, CI/CD, observability, and modern DevOps practices. Knowledge of AI-assisted development tools, coding agents, or agentic coding workflows. Experience in fintech, identity, compliance, SaaS, or other high-trust environments.

🏢 Summary: Full-stack Java developer role in the financial sector focused on building scalable microservices and modern frontend applications in an Agile environment. The position involves backend and frontend development using Java, Angular, cloud-native technologies, and distributed systems integrations. Hybrid work model with a long-term international project and competitive B2B rate. 🗂️ Requirements: 5+ years of commercial Java development experience, 2+ years of Angular experience, Knowledge of Spring Framework, Experience with microservices architecture, Experience with Docker, Experience with Kubernetes, Experience with Kafka and distributed systems, Knowledge of REST APIs, Knowledge of SQL, Experience with Oracle databases, Experience with Git, Understanding of Clean Code principles, Understanding of Continuous Integration, Experience integrating REST and SOAP services, Knowledge of XML, Knowledge of JSON, Knowledge of Avro, English level B2 or higher 📃 Skills: Java, Angular, React, Spring, Docker, Kubernetes, Kafka, REST, SQL, Oracle, Git, SOAP, XML, JSON, Avro, Jenkins, ArgoCD 🏢 Description: Senior Java Full-stack Developer 📍 Location: Warsaw, Gdańsk or Gdynia 🏢 Work model: Hybrid (3 days per week in the office) 📅 Project duration: August 2026 – January 2027 💰 B2B rate: up to 157 PLN/h ⏰ Full-time (40h/week) About the project Join an international financial institution and become part of a team responsible for building modern, scalable solutions supporting one of the company's key business domains. You will work in an Agile environment, developing cloud-ready microservices and integrating modern applications with existing enterprise platforms. This role combines backend and frontend development while giving you the opportunity to work with modern technologies, distributed systems, and high-performance applications. Your responsibilities Design, develop and maintain full-stack applications. Build and enhance Java-based microservices. Develop modern frontend solutions using Angular. Integrate applications using REST APIs, Kafka, MQ and Oracle databases. Participate in migration and transformation of existing systems. Ensure application quality, scalability and performance. Collaborate with architects, analysts, QA engineers and business stakeholders. Contribute to code reviews and technical improvements. We are looking for someone who has Minimum 5 years of commercial experience with Java development. At least 2 years of experience with Angular (React is also valued). Strong knowledge of Spring Framework . Experience building microservices architectures . Practical experience with Docker and Kubernetes . Experience working with Kafka and distributed systems. Knowledge of REST APIs , SQL and Oracle databases. Experience with Git . Understanding of Clean Code , Continuous Integration and software engineering best practices. Experience integrating REST and SOAP services. Good understanding of XML, JSON and Avro . Good command of English (B2 or higher) . Nice to have Jenkins Argo CD Event Sourcing Schema Registry DevOps practices What we offer Competitive B2B rate of up to 157 PLN/hour . Long-term international project. Opportunity to work with modern cloud-native technologies. Challenging projects within the financial sector. Professional, collaborative and Agile environment. Work with experienced engineers on large-scale enterprise solutions.

🏢 Summary: B2B contract opportunity for a Java Fullstack Developer with a strong backend focus (60–70%) to build and maintain applications within a Digital Platform using a modern tech stack. The role involves developing backend and frontend components, participating in code reviews and technical discussions, and contributing to architectural decisions in a distributed team environment. 🗂️ Requirements: Core Java 11, Advanced Java (JDBC, Collections, Serialization, Memory management), Spring framework, JPA (Hibernate), RDBMS knowledge, Strong SQL skills, RESTful web services, XML and JSON, OpenAPI (Swagger), JavaScript, Typescript, HTML, CSS, Angular 14+, RxJS, Git, Maven, npm, Frontend security (OWASP), Backend security knowledge 📃 Skills: Java, JDBC, Collections, Serialization, Spring, JPA, Hibernate, SQL, RDBMS, REST, XML, JSON, OpenAPI, Swagger, JavaScript, Typescript, HTML, CSS, Angular, RxJS, Git, Maven, npm, OWASP 🏢 Description: For one of our clients, we are looking for a Java Fullstack Developer (m/f/n). As part of the Digital Platform team, you will work on several applications utilizing a modern technology stack. You will get the opportunity to not only learn and grow but also to contribute and be involved in technical discussions and decision making. You will be working in a very nice, dynamic, multi-cultural and geographically distributed team and will receive a lot of support during your onboarding phase. The skill split is 60/40 or 70/30, with a stronger focus on backend. Responsibilities Development (Backend and Frontend) on several applications within the Digital Platform scope, both on new and existing applications Perform code reviews Participate in SCRUM events Participate in technical analysis and discussions Be proactive and take initiative Work closely with your colleagues and communicate Requirements Core Java V11, Advanced Java (JDBC, Collections, Serialization, Memory management) Web communication: XML, JSON, REST Spring framework JPA (Hibernate) Knowledge of RDBMS, specifically SQL skills Web communication: experience with OpenAPI specifications (Swagger) Proficiency in Web languages (JavaScript, Typescript, HTML, CSS) Proficiency in Angular 14+ framework (SPA) Knowledge of reactive programming (RxJS) Good understanding of GIT, Maven, and npm Understanding of Agile Workflow Understanding of Frontend Security topics (owasp) Understanding of Backend Security topics Fluency in English (B2 level) Nice to have: Experience with the Redux pattern (NgRX) & store management Experience with the Nx build system library Build and Deployment automation (Jenkins, Sonar) Microservice architecture and development (Spring Boot) Experience in leading a (geographically distributed) technical team Experience being involved in technical design Our offer: Rate: 130 - 140 PLN/h net + VAT B2B contract via SHIMI Hybrid – 2 days per week from the Warsaw or Kraków office Start: ASAP – notice period up to 2 weeks

🏢 Summary: Hybrid Java Full Stack Developer role focused on modernizing enterprise systems and building scalable, cloud-native microservices and web applications using Java and React. The position involves migrating legacy platforms to API-driven architectures, enhancing automation, and improving system efficiency and scalability. Work includes backend and frontend development within containerized and Kubernetes-based environments. 🗂️ Requirements: Strong experience with Java 11+, Hands-on experience with Kubernetes, Experience with containerized environments, Proficiency with Git, Strong Unix/Linux command line skills, Experience with SQL databases, Knowledge of RESTful APIs, Understanding of microservices architecture, Familiarity with HTTP, Familiarity with JavaScript 📃 Skills: Java, React, Kubernetes, Git, Unix, Linux, SQL, Oracle, REST, HTTP, JavaScript, Spring, SpringBoot, Microservices, Docker 🏢 Description: We are looking for a skilled Java Full Stack Developer to join our team in Kraków. This is a hybrid role requiring 2 days per week onsite , offering the opportunity to work on modernizing enterprise systems and building scalable, cloud-native solutions. Key Responsibilities Design, build, and support scalable services, microservices, and applications (both backend and frontend) using Java (11/17/21) and modern web technologies such as React Contribute to the modernization of legacy systems, including migration from mainframe and IBM WebSphere to API-driven and microservices-based architectures Help reduce operational costs and system complexity through modern engineering practices Improve testing efficiency by implementing and expanding automated testing frameworks Enhance Straight-Through Processing (STP) capabilities across services and platforms Required Skills & Experience Strong experience with Java (11 or higher) ; experience with Java 17+ is highly preferred Hands-on experience with Kubernetes and containerized environments Proficiency with Git for version control Strong command of Unix/Linux systems and CLI tools Solid experience with databases and SQL (Oracle preferred) Good understanding of RESTful APIs and microservices architecture Familiarity with HTTP/web technologies and JavaScript Nice to Have Experience with Reactjs for frontend development Background working in a DevOps-oriented delivery team Knowledge of application monitoring and observability tools Experience with Spring / Spring Boot

🏢 Summary: Senior Java Full-Stack Developer role for international projects, focused on end-to-end development of web applications in a cloud-based environment. The position involves backend and frontend development, design and testing activities, and collaboration within agile teams. It is a fully remote B2B contract with long-term cooperation. 🗂️ Requirements: Bachelor’s degree in Engineering, IT, Science, or related technical field, Minimum 5 years of commercial experience in corporate IT, Strong experience with Java and Java frameworks, Commercial experience with frontend technologies, Solid knowledge of JavaScript, HTML5, CSS3, Experience with Angular, Knowledge of databases and SQL, Experience with REST and SOAP web services, Experience with AWS or Azure, Knowledge of Clean Code principles, Experience with unit testing, Experience with source code management, Experience with CI/CD and automated deployments, Very good English (spoken and written), Experience in agile (Scrum) environments 📃 Skills: Java, Spring, JavaScript, HTML5, CSS3, Angular, SQL, REST, SOAP, AWS, Azure, CI/CD, Git, Scrum 🏢 Description: Senior Java Full-Stack Developer – Remote Contract type: B2B Hourly rate: 160–170 PLN/h Location: Remote We are looking for an experienced Senior Java Full-Stack Developer to join international implementation projects. The role involves end-to-end development of web applications, close collaboration with agile teams, and active participation in design and testing activities. The position is well suited for a developer who values clean code, quality, and teamwork in a cloud-based environment. Responsibilities Work as a Senior Java Full-Stack Developer across multiple implementation streams Develop and maintain web-based applications using Java and modern frontend technologies Write and maintain unit tests to ensure software quality Collaborate with agile team members to achieve project and client goals Participate in design reviews, testing activities, and technical discussions Requirements Bachelor’s degree in Engineering, IT, Science, or another technical field Minimum 5 years of commercial experience in a corporate IT environment Strong experience with Java and commonly used Java frameworks Commercial experience with frontend technologies and web-based applications Solid knowledge of JavaScript, HTML5, CSS3, and responsive single-page application design Experience with Angular Knowledge of databases and SQL Experience with web services and APIs (REST, SOAP) Experience deploying applications on cloud platforms such as AWS or Azure Knowledge of Clean Code principles and unit testing Experience with source code management, CI/CD, and automated deployments Very good English, both spoken and written Experience working in international and agile (Scrum) environments Strong communication and collaboration skills Nice to have Experience with Kafka or RabbitMQ Hands-on experience with microservices architecture Knowledge of Docker and Kubernetes Relevant certifications (Java, Spring, SQL, AWS, Azure) Knowledge of German or another European language Benefits Medicover healthcare package Multisport card Access to an e-learning platform Group life insurance We offer Fully remote cooperation Competitive hourly rate: 160–170 PLN/h (B2B) Long-term cooperation in international projects Modern technology stack and agile working environment

🏢 Summary: The role involves designing, developing, and maintaining cloud-native enterprise applications as a Fullstack Engineer using Java and Angular. The position focuses on building scalable backend and frontend solutions within a microservices architecture, supporting CI/CD, containerization, and secure application design. The engineer will work in Agile teams and contribute to architecture, deployment, and system reliability. 🗂️ Requirements: 5+ years of backend development experience, Strong expertise in Java 17+, Experience with Spring Boot and Spring Security, Strong knowledge of Angular and TypeScript, Experience with PostgreSQL and Hibernate/JPA, Experience with microservices architecture, Hands-on experience with Maven, Git, GitHub, CI/CD, Knowledge of Kubernetes and Docker, Experience with SQL databases, Experience with REST API development, Experience with JUnit, AssertJ, Hamcrest, Bash/Shell scripting skills, Understanding of secure coding practices, Experience in Agile/Scrum environments, English level B2/C1 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, Angular, TypeScript, PostgreSQL, Hibernate, JPA, Maven, Git, GitHub, CI/CD, Kubernetes, Docker, SQL, REST, JUnit, AssertJ, Hamcrest, Bash, Liquibase, Helm, Kafka, Python, Go, C, Grafana, Prometheus, Kibana, OWASP, JIRA 🏢 Description: We are looking for an experienced Fullstack Engineer who will be responsible for designing, developing, and maintaining modern enterprise applications in a cloud-native architecture. The person in this role will work on both backend and frontend solutions (Java + Angular). Our expectations 5+ years of professional backend development experience Strong expertise in Java 17+ and Spring ecosystem (Spring Boot, Spring Security) Strong knowledge of Angular and frontend development with TypeScript Experience with PostgreSQL, Hibernate/JPA Experience with cloud-native and microservices architecture Hands-on experience with Maven, Git, GitHub, and CI/CD pipelines Knowledge of Kubernetes, Docker Experience with SQL databases and REST API development Familiarity with JUnit, AssertJ, and Hamcrest Bash/Shell scripting skills Strong understanding of secure coding practices and scalable application design Experience working in Agile/Scrum environments Good English communication skills (B2/C1) Welcome Skills Experience with Kafka and event-driven architecture Knowledge of Python scripting Familiarity with Go (Golang) or C Experience with monitoring and logging tools such as Grafana, Prometheus, and Kibana Knowledge of OWASP Top 10 and application security best practices Experience with JIRA or similar project management tools Previous experience in enterprise-scale distributed systems Key tasks Develop and maintain scalable backend applications using Java 17+ and Spring Boot Design and optimize PostgreSQL databases and manage schema migrations with Liquibase Build and maintain modern frontend applications using Angular Develop secure, high-performance, and cloud-native solutions Contribute to CI/CD pipelines and deployment automation Support containerized deployments using Docker, Kubernetes, and Helm Collaborate with distributed engineering teams in Agile environments Participate in architecture discussions, code reviews, and technical mentoring Ensure application reliability, scalability, and maintainability across backend and frontend layers

🏢 Summary: Senior Full Stack Engineer role focused on application security within a large-scale enterprise platform. The position involves resolving security findings, performing Java and TypeScript dependency upgrades, and ensuring system stability in a regulated financial environment. Requires hands-on secure coding expertise and collaboration with distributed global teams. 🗂️ Requirements: 7+ years enterprise Java experience, Strong background in application security, Experience in vulnerability investigation and remediation, Experience with Java and TypeScript/JavaScript dependency upgrades, Proficiency in Java SE and JEE, Proficiency in Spring Framework, Experience with JMS, Experience with JPA and Hibernate, Proficiency in TypeScript, Experience with Angular v2+, Experience with Observables and Redux, Experience with OAuth, OIDC, SSO integration, Understanding of enterprise design and integration patterns, Experience in financial or regulated environments, Fluent English, Willingness to undergo background check 📃 Skills: Java, JEE, Spring, JMS, JPA, Hibernate, TypeScript, JavaScript, Angular, Redux, OAuth, OIDC, SSO, IAM, Kafka, Camel, Jenkins, Harness 🏢 Description: Start date: April 2026 Salary ranges: 115-125 PLN net/h Form of employment: B2B contract Location: Remote Language: English (fluent) About the Role: We are seeking an experienced Full Stack Engineer with a strong background in application security , enterprise Java development, and modern front‑end frameworks. In this role, you will focus on resolving security findings across a large-scale platform, performing dependency upgrades (Java + TypeScript), ensuring that remediation work does not impact existing functionality, and collaborating with global distributed teams. This is a senior-level position requiring hands-on expertise in secure coding, investigation of vulnerabilities, and implementation of remediation strategies. Key Responsibilities: Analyze and resolve security findings across the platform Perform dependency upgrades (Java, TypeScript/JavaScript) Ensure stability and functional integrity of systems after security fixes Work collaboratively with distributed global engineering teams Integrate with enterprise IAM systems (OAuth, OIDC, SSO) Contribute to best practices, architecture patterns, and secure development standards Must-Have Qualifications: 7+ years of enterprise Java experience Strong security background, including vulnerability investigation & remediation Experience with dependency upgrades (Java, TS/JS) Proficiency in: Java SE / JEE Spring Framework JMS JPA / Hibernate TypeScript Angular v2+, Observables, Redux Enterprise IAM integration: OAuth, OIDC, SSO Solid understanding of enterprise design & integration patterns Experience working in financial/regulated environments Excellent communication skills and fluent English Nice to Have: Apache Camel Jenkins, Harness.io Kafka We offer: Up to 125 PLN/hour net under a B2B contract, A flexible billing model, A short, 14‑day invoice payment term, A comprehensive private medical care package, Access to the MyBenefit cafeteria platform (including Multisport cards and prepaid cards for IKEA, Zalando, Notino, and many other partners). Additional Information: Background checks is mandatory for this role and will be conducted by a trusted third‑party vendor. This requirement is standard for the financial industry, ensuring compliance with regulatory obligations and maintaining the highest security standards. Once a candidate is shortlisted, the client will request the necessary documents and personal details required to complete the verification process.

🏢 Summary: Senior Java Full Stack Engineer role focused on end-to-end development of innovative applications within a global shipping services domain. The position covers full ownership of the development lifecycle, including architecture, DevOps, and XP-based remote pairing. It requires strong expertise in Java, Spring, React, microservices, and cloud-native technologies. 🗂️ Requirements: BS degree in Computer Science or equivalent experience, 5-6+ years of full-stack development experience, 5-6+ years of experience with Java and Spring, Experience with Functional Programming and Java Streams, 2+ years of front-end development with React, Experience with Reactive UI (Reactive JS), 2+ years of TDD/BDD using Junit, Jasmin, Mockito, Protractor or Selenium, 2+ years of experience with microservices architecture (Spring Boot/Cloud), Experience with DevOps practices and Jenkins, Experience designing and deploying cloud or hybrid solutions, Experience with container-based environments (Kubernetes, Cloud Foundry), Familiarity with microservices design concepts (service discovery, circuit breaker), Good English communication skills 📃 Skills: Java, Spring, React, JavaScript, Junit, Jasmin, Mockito, Protractor, Selenium, SpringBoot, SpringCloud, Kotlin, Jenkins, Kubernetes, CloudFoundry, Microservices, TDD, BDD 🏢 Description: We are looking for an experienced Senior Java Full Stack Engineer to join our development team. Our customer – integrated Shipping Services has set itself apart as an independent carrier with a fresh, unique approach. His strategy as a global niche carrier offers distinctive advantages to customers worldwide. We have created a smart, efficient network that ensures stable, reliable services, and we have made it our mission to focus on the needs of our customers, which stand at the heart of all our decisions. The main idea of our product operates in select trades, where it has a competitive advantage and where it can provide superior service. We maintain a flexible partnership approach with other major carriers, and our new line structure is a much-needed alternative to customers concerned about the current alliance-dominated market. Responsibilities: Hands-on full-stack development of innovative applications Owning the entire development cycle, including design, architecture, development, and DevOps Working in XP with Remote pairing Requirements: BS degree in Computer Science or equivalent combination of education and experience 5-6+ years of full-stack development 5-6+ years of experience in the following technologies: Java, Spring Experience with Functional Programming and Java Streams 2+ years of experience in front-end development with React Experience with developing a reactive UI (Reactive JS) 2+ years of experience in TDD/BDD development in the following frameworks: Junit, Jasmin, Mockito, Protractor/Selenium 2+ years of experience in micro-services-based architecture and tools (Spring Boot/Cloud) Experience in DevOps development and Jenkins Experience in development in Kotlin – an advantage Experience in designing, developing, and deploying cloud/hybrid-based solutions Experience in developing and deploying in container-based environments (Kubernetes, Cloud Foundry) Familiarity with the following design concepts: micro-services, service discovery, circuit breaker Self-starter with the ability to appropriately prioritize and plan complex work in a rapidly changing environment Versatility and the capability to switch easily between different tasks and technologies Experience in assessing a broad range of information solutions and products Strong critical thinker with problem-solving aptitude Good English - verbal and written We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers

🏢 Summary: Senior Full Stack Java Developer role focused on building secure, scalable enterprise applications in the fintech and payments domain. The position covers full-stack development, AI-assisted engineering, and CI/CD automation within a modern microservices architecture. The role involves end-to-end delivery from design to deployment in a hybrid work model. 🗂️ Requirements: 5+ years commercial experience with Java, Strong expertise in SpringBoot, Strong expertise in SpringSecurity, Strong expertise in Hibernate and JPA, Experience building REST APIs, Experience with microservices and distributed systems, Solid knowledge of HTML5 CSS3 JavaScript, Hands-on experience with React Angular or Vue, Experience with Jenkins pipelines, Experience with Docker and Kubernetes, Experience with MySQL PostgreSQL or Oracle, Knowledge of software architecture and design patterns, Experience working in Agile Scrum, Understanding of cryptography encryption digital signatures and key management, Experience writing unit and integration tests using JUnit and Mockito 📃 Skills: Java, SpringBoot, SpringSecurity, Hibernate, JPA, REST, Microservices, HTML5, CSS3, JavaScript, React, Angular, Vue, Jenkins, Docker, Kubernetes, MySQL, PostgreSQL, Oracle, JUnit, Mockito, CICD, Agile, Scrum, Cryptography, Encryption, DigitalSignatures, KeyManagement, DesignPatterns 🏢 Description: 🚀 Senior Full Stack Java Developer 📍 Hybrid | 1 day from the office in Gdańsk or Warsaw Are you an experienced Full Stack Developer passionate about building secure, scalable applications and leveraging the latest AI-powered development tools? Join our team and help shape innovative solutions within the payments and fintech space. We're looking for a Senior Software Engineer who combines strong Java expertise with a modern engineering mindset and enthusiasm for Agentic AI technologies such as GitHub Copilot, ChatGPT, Claude, and Cline. 💡 Your Mission As a Senior Full Stack Java Developer, you will: 🔧 Development & Engineering Design, develop, and maintain enterprise-grade full-stack applications. Build scalable backend services using Java, Spring Boot, and Spring Security. Develop modern, responsive user interfaces using React, Angular, or Vue.js. Optimize database interactions using Hibernate/JPA. Design and implement secure solutions for handling sensitive financial data. Participate in the full software development lifecycle—from concept to deployment. 🤖 AI-Powered Development Utilize Agentic AI tools to accelerate development and improve code quality. Apply AI solutions for coding, testing, documentation, and troubleshooting. Explore and adopt emerging AI technologies to enhance engineering efficiency. Share AI best practices and drive innovation within the team. ⚙️ CI/CD & DevOps Build and maintain Jenkins CI/CD pipelines. Automate testing, deployment, and release processes. Improve development workflows and delivery speed. ✅ Quality & Testing Create and maintain unit and integration tests using JUnit and Mockito. Participate in code reviews and quality assurance initiatives. Debug and solve complex technical challenges. 🤝 Collaboration Work closely with Product Managers, QA Engineers, Designers, and fellow Developers. Participate in Agile/Scrum ceremonies. Contribute to technical documentation and knowledge sharing. 🎯 Must-Have Skills Backend ✔️ 5+ years of commercial Java development experience ✔️ Strong expertise in: Java Spring Boot Spring Security Hibernate/JPA ✔️ Experience building RESTful APIs ✔️ Experience with microservices and distributed systems Frontend ✔️ Solid knowledge of: HTML5 CSS3 JavaScript ✔️ Hands-on experience with: React Angular Vue.js DevOps & Infrastructure ✔️ Jenkins CI/CD ✔️ Docker & Kubernetes ✔️ MySQL, PostgreSQL, or Oracle Engineering Practices ✔️ Software architecture and design patterns ✔️ Agile/Scrum methodologies ✔️ Understanding of cryptography, encryption, digital signatures, and key management ⭐ Nice to Have Experience with AWS, Azure, or GCP Android or iOS development experience Open-source contributions Technical blogging or community involvement 💳 FinTech & Payments Experience 2+ years in fintech, payments, or financial services will be great (nice to have) Knowledge of ISO 8583, EMV, and PCI DSS Experience with HSMs and key management systems Familiarity with tokenization and real-time payment systems Understanding of financial compliance and regulations 🎁 What You'll Get ✨ Opportunity to work on innovative fintech products ✨ Exposure to cutting-edge AI-powered development practices ✨ Hybrid work model (Gdańsk or Warsaw) ✨ Collaborative and supportive engineering culture ✨ Influence on architecture and technical decisions ✨ Continuous learning and professional growth opportunities 🚀 Ready to build the future of fintech with AI-enhanced engineering? Apply now and join a team where modern technology, innovation, and engineering excellence come together.

🏢 Summary: Remote B2B offer for a Full Stack Engineer with strong backend focus, responsible for building and optimizing scalable enterprise applications and language transformation technologies. The role covers full software development lifecycle within an international team, including cloud and serverless solutions. Hourly rate: 120–140 PLN. 🗂️ Requirements: Higher education in Computer Science, Engineering or related field (BS/MS), Commercial experience in Java software development, Strong knowledge of Java, JVM and J2EE, Experience with object-oriented programming and design patterns, Experience with Spring Framework and Spring Boot, Experience in building REST API, Knowledge of relational databases (Oracle, MS SQL Server, MySQL, PostgreSQL), Knowledge of SQL, JDBC and ORM (JPA, Hibernate), Experience with Docker and Kubernetes, Experience with unit testing (JUnit, TestNG or Spock) and TDD, Full stack development experience, Knowledge of at least one frontend framework (Angular preferred) 📃 Skills: Java, JVM, J2EE, Spring, SpringBoot, REST, SQL, JDBC, JPA, Hibernate, Oracle, MSSQL, MySQL, PostgreSQL, Docker, Kubernetes, JUnit, TestNG, Spock, TDD, Angular 🏢 Description: Java | JVM | J2EE | Spring / Spring Boot | REST API | SQL | JPA / Hibernate | Docker | Kubernetes | Angular 📍 Lokalizacja : praca zdalna 💰 Wynagrodzenie: 120- 140 pln/h 📄 Forma zatrudnienia: B2B Szukamy Full Stack Engineera z wyraźnym focusem na backend , który ma doświadczenie w tworzeniu wydajnych, skalowalnych i stabilnych aplikacji klasy enterprise. Dołączysz do międzynarodowego zespołu doświadczonych inżynierów , pracujących nad zaawansowanymi, krytycznymi biznesowo rozwiązaniami wspierającymi transformację cyfrową, przetwarzanie języka, rozwiązania chmurowe oraz architekturę serverless. Na tym stanowisku będziesz odpowiedzialny/a za rozwój, utrzymanie i optymalizację technologii transkompilacji oraz transformacji języków programowania. Rola obejmuje pełny cykl wytwarzania oprogramowania – od analizy i projektowania, przez implementację i testy, aż po wsparcie środowisk produkcyjnych. Zakres obowiązków: Udział we wszystkich etapach cyklu życia oprogramowania (analiza, projektowanie, implementacja, testy) Projektowanie rozwiązań zgodnych ze specyfikacją funkcjonalną i techniczną Tworzenie czytelnego, wydajnego, testowalnego i łatwego w utrzymaniu kodu Przygotowywanie i wdrażanie kolejnych wersji komponentów systemu Analiza nowych technologii i propozycje usprawnień architektonicznych Usuwanie błędów na środowiskach DEV / QA / UAT / PROD Współtworzenie i aktualizacja dokumentacji technicznej Wymagania must-have: Wykształcenie wyższe (BS/MS) – informatyka, inżynieria lub kierunki pokrewne Komercyjne doświadczenie w projektowaniu i tworzeniu oprogramowania w Java Programowanie obiektowe oraz stosowanie wzorców projektowych Bardzo dobra znajomość Java, JVM oraz J2EE Bardzo dobre umiejętności debugowania Bardzo dobra znajomość relacyjnych baz danych (Oracle, MS SQL Server, MySQL, PostgreSQL) SQL Server, MySQ Znajomość SQL , JDBC oraz ORM (JPA, Hibernate) Doświadczenie z Spring Framework oraz tworzeniem REST API (Spring Boot) Doświadczenie z konteneryzacją i wdrożeniami : Docker, Kubernetes Doświadczenie w testowaniu: JUnit / TestNG / Spock , TDD, mockowanie Doświadczenie full stack (również frontend) Znajomość co najmniej jednego frameworka frontendowego – preferowany Angular Nice to have: Znajomość kompilatorów , transformacji języków, DSL , parserów(ANTLR, JavaCC, Bison/Flex) Doświadczenie z technologiami infrastrukturalnymi: RabbitMQ, Kafka, Redis Znajomość systemów przetwarzania równoległego i rozproszonego (Apache Spark, Apache Storm) Praktyczne doświadczenie w pracy z Kubernetes Doświadczenie w C# oraz .NET