May 5, 2026

Senior Fullstack Developer (Java)

Senior • Remote

26,880 - 30,240 PLN

Gdansk, Poland

About the Project

For our Client - a global logistics company we are looking for a Senior Fullstack Developer (Java) who will be working with a platform that integrates several sources for giving transparent view for coastals schedule to internal operational stakeholders. Team also provides the tools for the operational monitoring, past performance analysis and recovery measures. Additional insights provided by the platform are based on statistical & analytical approaches (e.g. move prediction, avg. port time, etc.)

 

The role is approx. 75% BE tasks and 25% FE tasks.

Tech: Java EE, JDK 8, Payara Server 5, OpenAPI, IBM DB2, Neptune graph DB from AWS, OpenSearch, UI: JSF + Primefaces, GitLab, Jenkins, JFrog

Work Mode: remote (with occasional trips to Gdańsk)

Job Responsibilities

  • Design and implement full-stack applications (front- and backend) using Java (JEE)

  • Write, test, debug, and document code, solutions, and applications

  • Collaborate with your team to handle the entire software development life cycle: from analysis and design to testing, deployment, maintenance, operations, and 3rd-level support

  • Work closely with internal stakeholders and external partners to analyze existing applications, solutions, business processes, and requirements

  • Modernize and expand current applications by migrating from on-premises infrastructure to a cutting-edge cloud platform

  • Manage and maintain existing on-premises infrastructure, including Payara Application Servers and standalone Java applications

Expectations

  • Min. 5 years of experience as Fullstack Developer

  • Strong proficiency in Java, with knowledge of JSF, JPA, EJB, CDI, and JAX-RS

  • Hands-on experience in JEE full-stack web application development

  • Basic knowledge of SQL, UNIX, Maven, and Git

  • Familiarity with requirements gathering, documentation, and the use of software design/modeling tools (e.g., UML)

  • Solid understanding of software development processes, with flexibility and strong customer orientation

  • Excellent command of English, both written and spoken, combined with strong communication skills

  • Nice to have: Experience with agile development methodologies (e.g., Scrum); Knowledge of AWS cloud services (OpenSearch, EC2, Neptune, ECS); Work experience or familiarity with the international logistics industry; DevOps experience

We offer

  • Ongoing support from a dedicated agent, taking care of your project continuity, client contact, necessary formalities, work comfort and development

  • Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors

  • Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle

  • Spectacular integration events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres)

  • Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients

  • Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years

  • A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad

About 7N

Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. 

Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations. 

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Warsaw, Poland

25,200 - 28,560 PLN

🏢 Summary: Remote Full Stack Developer role focused on building and maintaining scalable digital health applications using Python and Vue.js. The position involves developing new features, contributing to MVPs and prototypes, and ensuring high performance and reliability in cloud-based environments. The role requires strong architectural understanding and hands-on experience with modern frontend and backend technologies. 🗂️ Requirements: 5+ years of frontend development experience, 5+ years of experience with Python, Strong experience with TypeScript, Strong experience with Vue.js, Understanding of SPA frameworks, Experience building scalable applications, Experience with cloud and DevOps tools, Fluency in English 📃 Skills: Python, Vue, TypeScript, JavaScript, SPA, React, Angular, Cloud, DevOps 🏢 Description: Full Stack Developer (Python+Vue) We are seeking a Full Stack Developer for a global life‑science company driving innovation in digital health . You will build and maintain scalable applications, working closely with cross‑functional teams and contributing to new features and MVPs. Success in this role requires strong system architecture skills, hands‑on experience with scalable software, and a passion for experimentation and rapid prototyping. Work mode : 100% remote Tasks Develop and maintain scalable frontend and backend components using Vue.js, TypeScript, and Python Collaborate with architects, product owners, and engineers to design high‑quality solutions Build new features , improve existing functionality, and ensure application performance and reliability Contribute to early MVPs , prototypes, and experimental solutions Participate in code reviews , ensure best practices , and support continuous improvement of the development process Work with modern cloud and DevOps tools to enable smooth delivery and deployment Expectations 5+ years of experience in Frontend Software Development 5+ years of experience with Python Strong hands‑on experience with TypeScript and Vue.js Solid understanding of SPA frameworks (React or Angular is a plus) Fluency in English We offer Ongoing support from a dedicated agent , taking care of your project continuity, client contact, necessary formalities, work comfort and development, Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors, Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle, Spectacular integration events , both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres), Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients, Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package , including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad. About 7N Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.

Technology

N-iX

Senior Full Stack Engineer (Java+React)

Senior

Remote

Krakow, Poland

5,800 - 6,000 PLN

🏢 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

Technology

7N Sp. z o. o.

Fullstack Developer (Java/Angular)

Senior

Hybrid

Warsaw, Poland

150 - 170 PLN

🏢 Summary: Fullstack Developer (Java/Angular) role in an agile team focused on regulatory solutions and transformation of payment systems, developing and maintaining key digital payment functionalities for millions of users. The position involves building Java (Spring Boot) and Angular applications, designing REST APIs, and working with reactive programming. Hybrid work model from Warsaw or Tricity. 🗂️ Requirements: Minimum 6 years of programming experience, Very good knowledge of Java, Very good knowledge of Spring Boot, Experience in reactive programming (e.g. RxJava), Knowledge of Angular or AngularJS, Knowledge of TypeScript, Ability to design and develop REST APIs, Experience in writing unit and automated tests, Knowledge of test automation frameworks (e.g. Cucumber), Experience with build tools, Fluent English (min. B2) 📃 Skills: Java, SpringBoot, Angular, AngularJS, TypeScript, REST, RxJava, Cucumber, API, Agile 🏢 Description: O projekcie: Poszukujemy Fullstack Developera (Java/Angular) , który dołączy do agilowego zespołu zajmującego się rozwiązaniami związanymi z regulacjami, rozwojem produktów oraz transformacją systemów płatniczych . Projekt dotyczy rozwoju i utrzymania kluczowych funkcjonalności płatności w kanałach cyfrowych (web i mobile), obsługujących kilka milionów użytkowników. Model pracy: praca hybrydowa z jednego z biur (Warszawa/Trójmiasto) Zadania: Tworzenie i rozwój aplikacji w technologii Java (Spring Boot) oraz Angular Projektowanie i rozwój API w architekturze REST Praca z programowaniem reaktywnym (np. RxJava) Współtworzenie i utrzymanie testów jednostkowych oraz automatycznych Współpraca w środowisku Agile przy dostarczaniu funkcjonalności Dbanie o jakość kodu oraz standardy architektoniczne Oczekiwania: min. 6 lat doświadczenia programistycznego Bardzo dobra znajomość Java oraz Spring Boot Doświadczenie w programowaniu reaktywnym (np. RxJava) Znajomość Angular/AngularJS oraz TypeScript Umiejętność projektowania i tworzenia API REST Doświadczenie w pisaniu testów jednostkowych oraz automatycznych Znajomość frameworków do automatyzacji testów (np. Cucumber) Doświadczenie z narzędziami buildowymi Bardzo dobre umiejętności komunikacyjne i pracy zespołowej Inżynierskie podejście do tworzenia oprogramowania Gotowość do wspierania procesu testowania w zespole (udział w testach w celu utrzymania płynności delivery) Znajomość domeny płatności (mile widziane) Płynny angielski (min.B2) Oferujemy: Stałe wsparcie osobistego agenta , dbającego o Twoją ciągłość projektową, kontakt z klientem, niezbędne formalności, komfort pracy oraz rozwój, Consultant Development Program – doradztwo w planowaniu kariery w oparciu o najnowsze trendy i potrzeby rynku IT, obejmujące m.in . konsultacje z agentami i mentorami kariery , Dostęp do 7N Learning & Development – platformy rozwojowo-edukacyjnej z webinarami, biblioteką artykułów i raportów branżowych oraz regularnymi zaproszeniami na jednorazowe i cykliczne wydarzenia rozwojowe – techniczne, biznesowe oraz life-stylowe, Spektakularne eventy integracyjne , zarówno dla Ciebie (np. coroczny wyjazd Kick-Off , imprezy świąteczne czy sportowe Letnie Igrzyska), jak i dla Twoich bliskich (np. pikniki rodzinne, premiery filmowe), Rozwój zawodowy nie tylko podczas projektu – możesz zaangażować się w przekazywanie wiedzy innym w ramach oferty 7N Services kierowanej do klientów 7N, Relacje i dostęp do wiedzy najbardziej doświadczonych ekspertów IT na rynku – średni staż zawodowy naszego Konsultanta w Polsce to ponad 10 lat. Pakiet benefitów zaplanowany od A do Z , czyli dofinansowanie do opieki medycznej, ubezpieczenia na życie, karty sportowej dla Ciebie i Twoich bliskich, a także zniżki do sklepów w Polsce i za granicą

Technology

Shimi Sp. z o.o.

Senior/Mid Java Fullstack Developer (m/f/n)

Senior

Hybrid

Krakow, Poland

130 - 141 PLN/hr

🏢 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

Technology

Crestt

Senior Java Fullstack Developer

Senior

Hybrid

Gdansk, Poland

140 - 157 PLN/hr

🏢 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.