Java & React.js Developer - Krakow - Poland 2/3 days onsite

🏢 Summary: Hybrid Fullstack Developer role focused on building and maintaining scalable web applications using Java and React.js. The position involves designing backend services and RESTful APIs, developing modern frontend interfaces, and contributing to CI/CD and DevOps practices. Work includes testing, performance optimization, and collaboration on architecture and microservices. 🗂️ Requirements: Strong experience with Java and Spring Boot, Solid experience with React.js and state management, Experience designing and consuming RESTful APIs, Experience with microservices architecture, Proficiency in JavaScript, HTML5, CSS3, Experience with relational or NoSQL databases, Knowledge of unit and integration testing practices, Experience with CI/CD pipelines, Familiarity with Git and version control workflows, Ability to work with Agile/Scrum methodologies 📃 Skills: Java, Spring, SpringBoot, React, Redux, JavaScript, HTML5, CSS3, Webpack, Babel, ESLint, JUnit, Mockito, Jest, MySQL, PostgreSQL, NoSQL, Git, CI/CD, Docker, Kubernetes, AWS, Azure, GCP, Kafka, GraphQL, WebSocket 🏢 Description: We are looking for a highly skilled Fullstack Developer with expertise in Java and React.js to join our Kraków-based development team. You will design, develop, and maintain scalable, high-performance web applications, contributing to both backend services and rich frontend interfaces. This role follows a hybrid working model , with 2–3 days per week onsite in Kraków. Key Responsibilities Backend Development: Architect, implement, and maintain backend services using Java , Spring Boot , and related frameworks Frontend Development: Build responsive, modular, and maintainable React.js applications with a focus on component-driven design Design and implement RESTful APIs and microservices , ensuring high performance, security, and scalability Collaborate with cross-functional teams to define technical requirements , system architecture, and feature implementation Apply unit testing, integration testing, and end-to-end testing best practices (JUnit, Mockito, Jest, React Testing Library) Participate in code reviews , enforce coding standards, and promote best practices in clean code, SOLID principles, and design patterns Troubleshoot and optimize application performance and resolve production issues Manage CI/CD pipelines , automate deployments, and support DevOps practices Stay up-to-date with emerging technologies and frameworks to continuously improve application architecture Required Skills and Experience Strong experience with Java , Spring Boot , and related backend frameworks Solid experience with React.js , Redux , or state management libraries Proven experience in designing and consuming RESTful APIs and microservices architecture Proficient in JavaScript, HTML5, CSS3, and modern frontend tooling (Webpack, Babel, ESLint) Experience with relational databases (MySQL, PostgreSQL) and/or NoSQL databases Familiarity with Git , version control workflows, and Agile/Scrum methodologies Understanding of unit testing, integration testing, and test-driven development (TDD) Good problem-solving and communication skills in English Nice to Have Experience with TypeScript and advanced React patterns (Hooks, Context API, Suspense) Knowledge of Docker , Kubernetes , or cloud platforms (AWS, Azure, GCP) Experience with event-driven architectures , message queues , or Kafka Familiarity with GraphQL or WebSocket-based real-time applications

🏢 Summary: Remote role for an experienced Java and ReactNative Developer focused on building scalable web applications across backend services and modern frontend interfaces. The position involves developing RESTful APIs, collaborating in Agile teams, and supporting CI/CD-driven deployments. 🗂️ Requirements: Strong experience with Java, Solid experience with ReactNative, Experience building and consuming REST APIs, Strong knowledge of JavaScript, Strong knowledge of HTML, Strong knowledge of CSS, Experience with Git, Familiarity with Agile development environments, Good communication skills in English 📃 Skills: Java, ReactNative, REST, JavaScript, HTML, CSS, Git, Agile, Spring, TypeScript, SQL, Docker, CI/CD 🏢 Description: We are looking for an experienced Java & ReactNative Developer to join our development team In this role, you will work on building and maintaining scalable web applications, contributing to both backend services and modern frontend interfaces. Key Responsibilities Develop and maintain backend services using Java Build responsive and modern user interfaces using ReactNative Design and implement RESTful APIs Collaborate with product managers, designers, and engineers to deliver new features Write clean, maintainable, and efficient code Participate in code reviews and contribute to development best practices Troubleshoot and resolve technical issues Support integration and deployment through CI/CD pipelines Required Skills and Experience Strong experience with Java Solid experience with ReactNative Experience building and consuming REST APIs Strong knowledge of JavaScript, HTML, and CSS Experience with Git and modern development workflows Familiarity with Agile development environments Good communication skills in English Nice to Have Experience with Spring Boot Experience with TypeScript Knowledge of SQL databases Familiarity with Docker or cloud platforms Work Model Remote Europe.

🏢 Summary: Hybrid Java Fullstack Developer role focused on building and maintaining scalable web applications using Java and React.js. The position involves developing backend services, modern frontend interfaces, and RESTful APIs while supporting CI/CD processes. Work model includes two days onsite in Warsaw with the remaining days remote. 🗂️ Requirements: Strong experience with Java, Solid experience with React.js, Experience building and consuming REST APIs, Strong knowledge of JavaScript, Strong knowledge of HTML, Strong knowledge of CSS, Experience with Git, Experience with CI/CD pipelines, Familiarity with Agile environments, English proficiency 📃 Skills: Java, React, REST, JavaScript, HTML, CSS, Git, CI/CD, Spring, TypeScript, SQL, Docker 🏢 Description: We are looking for an experienced Java Fullstack Developer to join our development team in Kraków. In this role, you will work on building and maintaining scalable web applications, contributing to both backend services and modern frontend interfaces. This position follows a hybrid working model with two/three days per week onsite in Warsaw . Key Responsibilities Develop and maintain backend services using Java Build responsive and modern user interfaces using React.js Design and implement RESTful APIs Collaborate with product managers, designers, and engineers to deliver new features Write clean, maintainable, and efficient code Participate in code reviews and contribute to development best practices Troubleshoot and resolve technical issues Support integration and deployment through CI/CD pipelines Required Skills and Experience Strong experience with Java Solid experience with React.js Experience building and consuming REST APIs Strong knowledge of JavaScript, HTML, and CSS Experience with Git and modern development workflows Familiarity with Agile development environments Good communication skills in English Nice to Have Experience with Spring Boot Experience with TypeScript Knowledge of SQL databases Familiarity with Docker or cloud platforms Work Model Hybrid: 2 days onsite in Warsaw , remaining days remote.

🏢 Summary: Full Stack Developer role focused on building scalable backend services in Java and modern, responsive front-end applications in React.js. The position involves designing RESTful APIs, collaborating with cross-functional teams, and delivering clean, maintainable, high-quality code in a hybrid work model. 🗂️ Requirements: Commercial experience with Java, Experience with Spring Boot framework, Strong knowledge of React.js, Proficiency in modern JavaScript, Experience designing and consuming RESTful APIs, Experience with relational or non-relational databases, Experience with version-controlled collaborative development, Availability to work onsite in hybrid model (Cracow) 📃 Skills: Java, SpringBoot, React, JavaScript, REST, SQL, NoSQL, AWS, Azure, GCP, Docker, Kubernetes, CICD 🏢 Description: 𝗪𝗲 𝗔𝗿𝗲 𝗛𝗶𝗿𝗶𝗻𝗴: 𝗝𝗮𝘃𝗮 𝗮𝗻𝗱 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 We are currently seeking a skilled and motivated Full Stack Developer with strong expertise in Java and React.js to join our growing team. In this role, you will be responsible for designing and developing scalable backend services using Java, as well as building modern, responsive user interfaces using React.js. You will work closely with cross-functional teams to deliver high-quality, reliable solutions, while ensuring that your code is clean, maintainable, and efficient. 𝗞𝗲𝘆 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀: Developing robust backend applications using Java, ideally with Spring Boot Creating intuitive and high-performing front-end applications using React.js and modern JavaScript Designing and consuming RESTful application programming interfaces Collaborating with colleagues across engineering, product, and design teams Contributing to code reviews and continuous improvement practices 𝗪𝗲 𝗮𝗿𝗲 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 𝗰𝗮𝗻𝗱𝗶𝗱𝗮𝘁𝗲𝘀 𝘄𝗵𝗼 𝗵𝗮𝘃𝗲: Proven experience working with Java and related frameworks Strong knowledge of React.js and modern JavaScript standards Experience working with relational or non-relational databases A proactive approach to problem-solving and a strong attention to detail Excellent communication and teamwork skills It would be beneficial if you also have: Experience working with cloud platforms such as Amazon Web Services, Microsoft Azure, or Google Cloud Platform Exposure to continuous integration and continuous delivery pipelines Familiarity with containerisation technologies such as Docker and Kubernetes 📍 𝗟𝗼𝗰𝗮𝘁𝗶𝗼𝗻: Cracow, Poland (Hybrid – 3 days per week onsite) 💼 𝗘𝗺𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 𝗧𝘆𝗽𝗲: B2B If you are passionate about building impactful technology and are looking to take the next step in your career, we would be delighted to hear from you. Please apply or get in touch directly for more information.

🏢 Summary: Long-term hybrid opportunity for a senior React Developer to build highly responsive, data-intensive user interfaces for a financial sector client. The role focuses on developing scalable front-end solutions in real-time, high-volume environments using modern engineering best practices. 🗂️ Requirements: 7+ years of professional experience, Bachelor’s or Master’s degree in Computer Science or related field, Strong experience with React, Strong experience with TypeScript and JavaScript, Strong experience with state management, Strong experience with data visualisation, Strong experience with CSS3, Experience building responsive UI for large data sets, Experience in real-time, high-volume systems, Experience with TDD and BDD, Experience with UI test automation frameworks, Experience integrating with RESTful APIs, Understanding of event-driven microservices, Experience with Cloud architecture, Experience with Agile and DevOps practices, Commitment to Clean Code and engineering best practices 📃 Skills: React, TypeScript, JavaScript, CSS3, Redux, REST, C#, Microservices, Azure, TDD, BDD, DevOps, Agile, UI, Cloud 🏢 Description: React Developer We are currently looking for experienced React Developers to join a long-term project with one of our international clients in the financial sector. Location: Wroclaw, Poland (Hybrid – 3 days per week from the office) Experience: 7+ years Requirements: • Bachelor’s and/or Master’s degree or equivalent focusing on Computer Science, Computer Engineering or a related technical discipline. • Strong experience with React and TypeScript/JavaScript. • Strong experience with state management and data visualisation. • Strong experience with CSS3 and JavaScript. • Experience with developing highly responsive user interface components with large data sets, that work in high-volume, real-time environments. • Experience with TDD, BDD and UI Test Automation Frameworks. • UX Design, Interaction and/or Visual Design experience to prototype scenarios and end-to-end experiences with product owners and business stakeholders. • Experience integrating the front end with C# RESTful APIs and event driven microservices is beneficial. • Experience with Cloud architecture and engineering is beneficial, ideally on Microsoft Azure. • Agile, Test Driven Development and DevOps practices are part of your DNA. • A Software Craftsperson focused on engineering best practices and delivering Clean Code. • Good communication skills – both written and verbal. • Strong analytical and problem-solving skills, you like to figure out how things work. • Keen interest in understanding how the business works. • Passion for learning and innovation. 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 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 React Developer role focused on building and maintaining modern, scalable web applications in a large international banking environment. The position involves developing high-quality, responsive frontend solutions, ensuring code quality, and supporting production systems within an Agile team. Long-term B2B contract with hybrid work model in Kraków. 🗂️ Requirements: Proven experience delivering web applications, Strong experience building rich frontend/UI layers, Excellent knowledge of React.js, Excellent knowledge of JavaScript, Excellent knowledge of TypeScript, Strong knowledge of HTML5, Strong knowledge of CSS3, Experience with CSS preprocessors (SASS or Less), Experience with Jest, Experience with React Testing Library, Experience creating pixel-perfect UI from detailed specifications, Experience designing responsive interfaces for desktop and mobile, Understanding of accessibility standards, Understanding of cross-browser compatibility, Knowledge of JSON, Knowledge of XML 📃 Skills: React, JavaScript, TypeScript, HTML5, CSS3, SASS, Less, Jest, ReactTestingLibrary, JSON, XML 🏢 Description: Location: Kraków, Poland Work model: Hybrid, 6 days per month in the Kraków office Recruitment process: Test + 1-hour live coding interview in React Contract : B2B, long-term About the role We are looking for a Senior React Developer to join the Business Services Digital team . The team delivers IT solutions and support for Business Services within a large-scale, international banking environment. This is a great opportunity for an experienced frontend engineer who enjoys building high-quality digital products, working in Agile teams, and contributing to modern, scalable web applications in a complex enterprise setting. Your responsibilities Design, develop, test, and implement modern web-based applications Build rich, responsive, and pixel-perfect user interfaces using React Maintain a delivery-oriented approach across application development and supporting software/data infrastructure Manage software releases and support existing systems in production Ensure code quality, maintainability, and full test coverage Contribute to and promote frontend best practices and engineering standards Mentor other team members through knowledge sharing and technical guidance Deliver solutions on time and within budget Follow internal development methodologies, security standards, and documentation requirements Drive productivity and quality improvement initiatives Coordinate releases through to Production Required experience Proven track record in delivering web applications Strong experience building rich frontend/UI layers Excellent knowledge of React.js Excellent knowledge of JavaScript and TypeScript Strong knowledge of HTML5 , CSS3 , and CSS preprocessors such as SASS or Less Experience with frontend testing frameworks such as Jest and React Testing Library Experience creating pixel-perfect UI based on detailed specifications Experience designing responsive interfaces for desktop and mobile applications Good understanding of accessibility and cross-browser compatibility Good knowledge of data marshalling/de-marshalling using JSON and XML Nice to have Experience working with Git Familiarity with IntelliJ and VS Code Good understanding of responsive web techniques Knowledge of Node.js / Express Experience designing digital products in the onboarding or banking domain What makes this opportunity interesting Work on impactful digital solutions in a global banking environment Join a mature engineering team focused on quality, delivery, and best practices Contribute to modern frontend development using React and TypeScript Competitive B2B rate

🏢 Summary: Senior Java Developer role focused on building and optimizing enterprise backend systems while contributing to React-based frontend solutions. The position involves working with modern and legacy Java frameworks, Oracle databases, and deploying applications to Azure using CI/CD pipelines. It combines backend architecture, cloud deployment, and frontend collaboration in a dynamic enterprise environment. 🗂️ Requirements: Minimum 5 years of experience in Java backend development, Expertise in Spring Boot and Quarkus, Experience with Struts, JSP, and JDBC, Proficiency in Oracle Database including schema design and PL/SQL, Experience with CI/CD pipelines, Experience deploying applications to Azure, Experience with App Services, Azure SQL, and Kubernetes, Familiarity with React and TypeScript, English proficiency at B2 level or higher 📃 Skills: Java, Spring, SpringBoot, Quarkus, Struts, JSP, JDBC, Oracle, SQL, PLSQL, CI/CD, Azure, AppServices, AzureSQL, Kubernetes, React, TypeScript 🏢 Description: We are seeking a highly skilled Senior Java Developer with expertise in React to enhance and modernize our technology landscape. This role involves working on the development and optimization of backend systems while contributing to cutting-edge React-based UI solutions within a dynamic enterprise setting. This role offers a full office model, with 3 days per week working from the client's office in Krakow, Poland. Responsibilities Design and implement robust backend services using Java Leverage modern frameworks like Spring Boot and Quarkus as well as legacy technologies such as Struts, JSP, and JDBC Contribute to system architecture design and ensure seamless integration across enterprise systems Optimize Oracle Database performance through schema design and PL/SQL programming Manage and deploy applications via CI/CD pipelines to Azure infrastructure, including App Services, Azure SQL, and Kubernetes Develop and enhance React and TypeScript-driven user interfaces in cooperation with the frontend team Conduct thorough code reviews and guide team members by sharing expertise Collaborate with cross-functional teams to ensure scalable and secure application development Requirements At least 5 years of experience in Java backend development Expertise in modern frameworks like Spring Boot and Quarkus, alongside legacy systems such as Struts, JSP, and JDBC Proficiency in Oracle Database, including schema design, SQL, and PL/SQL Competency with CI/CD pipelines and experience in deploying applications to Azure, leveraging App Services, Azure SQL, and Kubernetes Familiarity with React and TypeScript for frontend development Demonstrated ability to mentor junior developers and collaborate effectively within a team English proficiency at B2 level or higher Nice to have Knowledge of system integration within large enterprise ecosystems Familiarity with cloud-native architectures and containerization Background in the financial sector or experience in regulated industries 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 JavaScript React Developer role focused on building and maintaining high-performance frontend solutions for large-scale, multi-country eCommerce platforms. The position involves developing modern applications with React.js and Next.js, contributing to a multisite Drupal transition, and driving best practices across the full development lifecycle. The role requires close collaboration with cross-functional and international teams in a hybrid work setup. 🗂️ Requirements: Strong experience with React.js and Next.js (SSG/SSR, i18n, performance optimization), Proficiency in JavaScript and TypeScript, Strong knowledge of HTML5, CSS/SCSS, Tailwind, Experience with REST and GraphQL APIs, Experience with Git and CI/CD pipelines, Knowledge of Docker and Kubernetes, Experience with cloud platforms (AWS or Azure or GCP), Understanding of headless or decoupled architecture, Experience with performance optimization and scalable frontend architecture, Knowledge of WCAG accessibility standards, Experience working in Agile/Scrum environment, English level B2 or higher 📃 Skills: React, Next.js, JavaScript, TypeScript, HTML5, SCSS, Tailwind, REST, GraphQL, Git, Jira, Figma, Confluence, Docker, Kubernetes, GitLab, AWS, Azure, GCP, Drupal, jQuery, CI/CD, WCAG, Scrum, AJAX 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. For our client, we are looking for a Senior JavaScript React Developer to join our client's Website & eCommerce team. In this role, you will be responsible for building and maintaining modern, high-performance frontend solutions using React.js and Next.js. You will collaborate closely with designers, backend developers, and international stakeholders while driving best practices across the development lifecycle. You will play a key role in the evolution of large-scale, multi-country digital platforms and contribute to the transition toward a new multisite Drupal platform planned for 2026. Project information: Location: Warsaw, Poland Work Setup: Hybrid work (2 - 3 days/ week in the office) Rate: 125 PLN/net/h + VAT (B2B contract) Language: English (B2+ Required) Start date: depending on candidate availability Project scope: Develop and maintain frontend components using React.js and Next.js (SSG/SSR, i18n, performance optimization) Build and support custom CMS modules, plugins, and integrations Contribute to all phases of the software development lifecycle: design, development, testing, deployment, and maintenance Drive and promote best practices, including test-driven development, CI/CD, SCRUM, refactoring, and code standards Collaborate closely with UX/UI designers and frontend/backend developers to deliver intuitive and visually appealing user experiences Ensure website content is easily editable by non-technical users Optimize applications for performance, scalability, and accessibility (WCAG) Work with distributed international teams and key stakeholders Stay up to date with emerging frontend technologies and industry trends Requirements: Technical Skills: Frontend: Strong skills in React.js and Next.js (SSG/SSR, i18n, performance optimization). Languages: JavaScript/TypeScript, HTML5, SCSS/Tailwind. APIs: REST, GraphQL. Tooling: Jira, Git, Figma, Confluence. Architecture (Preferred): Headless, Decoupled, Micro Frontends, Component-based design. Cloud & DevOps: Docker, Kubernetes, GitLab CI/CD, AWS/Azure/GCP. Competences: Strong front-end skills: HTML, CSS, JavaScript, jQuery, plus modern frameworks (React, Next.js). Understanding of the entire web development process (design, development, deployment). Good understanding of asynchronous request handling, partial page updates, and AJAX. Proficient in cross-browser compatibility and scalable application design principles. Experience with data migration, transformation, and scripting. Familiarity with Agile and Scrum methodologies. Prior experience with digital accessibility (WCAG) We offer: Full-time job agreement based on B2B Private medical care with dental care (covering 70% of costs) + rehabilitation package. Family package option possible Multisport card (also for an accompanying person) Life insurance

🏢 Summary: The offer is for a Java & React Developer to build and develop Data Lake and DWH solutions, including online and offline data flows and "chat with data" applications. The role involves designing and implementing APIs, data processing solutions, and conversational web interfaces integrated with data platforms. The position includes working in a DevSecOps model within production environments. 🗂️ Requirements: React frontend development, Experience building web applications with conversational (chat) features, Java backend development and API design, Basic knowledge of BigQuery and SQL, UI design for data presentation (tables, charts, drill-down, export), Experience with Git, code review, and quality standards, Writing unit, integration, and E2E tests, Experience with CI/CD pipelines, Monitoring and logging in production environments, Incident response and production support, Collaboration with AI and data teams (API contracts, data formats, validations) 📃 Skills: Java, React, SQL, BigQuery, Git, CI/CD, Monitoring, Logging, API, DevSecOps, Unit, Integration, E2E 🏢 Description: Dla naszego Klienta szukamy Java & React Developer. Opis stanowiska: budowanie rozwiązań klasy Data Lake i DWH - procesy zasilania zarówno on-line jak i off-line, projektowanie i realizowanie rozwiązań informatycznych w obszarze zasilania danych, analizowanie danych oraz przygotowanie modeli logicznych i fizycznych, strojenie zapytań SQL na bazach relacyjnych i hurtownianych w on-prem i na chmurze GCP tworzenie przepływów off-linowe i on-linowe zarówno w narzędziach on-prem jak i GCP, tworzenie rozwiązań ładowania danych w Python oraz Rust dla danych strukturalnych i niestrukturalnych, budowanie i rozwijanie narzędzi „chat with data”: od warstwy rozmowy, przez interpretację intencji, po generowanie zapytań i prezentację odpowiedzi tworzenie koncepcji rozwiązań i implementacje rozwiązań w oparciu o wymagania i potrzeby biznesu, usuwanie incydentów i branie udział w rozwiązywaniu problemów, wspieranie testów i wdrażanie zmian w zakresie procesów zasilania danych, pomaganie przy serwisowaniu wdrożonego oprogramowania, praca zgodnie z modelem DevSecOps. Wymagania: znajomość frontend’u: React doświadczenie w budowie aplikacji webowych z elementami konwersacyjnymi (chat): streaming odpowiedzi, historia rozmów, feedback użytkownika, prezentacja źródeł/uzasadnień doświadczenie w budowie backendu: Java – projektowanie i rozwój usług API podstawy pracy z BigQuery/SQL umiejętność projektowania ergonomicznego UI dla danych: tabele, wykresy, drill down, eksport wyników praktyka w pracy zespołowej: Git, code review, standardy jakości, dokumentacja, testy (unit/integration/e2e) doświadczenie w środowisku produkcyjnym: CI/CD, monitoring/logowanie, reagowanie na incydenty gotowość do współpracy z AI Engineer i zespołami data (kontrakty API, formaty danych, walidacje, ograniczenia kosztowe) Mile widziana znajomość: rozwiązań klasy semantic/metrics layer - semantic layer, caching, pre-aggregations, governance metryk narzędzia „conversational analytics” / wzorce produktowe dla „chat with data”: citations, „pokaż SQL”, tryby explore vs answer, scoring zaufani biblioteki UI i data-viz znajomość GCP: Cloud Run, Pub/Sub podstawy konteneryzacji i wdrożeń: Docker/Kubernetes doświadczenie w środowisku regulowanym (bankowość): audyt, zgodność, klasyfikacja danych, procesy bezpieczeństwa Oferujemy: umowa B2B miejsce realizacji zadań: min. jeden dzień w tygodniu w biurze (Poznań/Warszawa) ​ opcjonalnie pakiet medyczny, my Benefit