Full Stack Developer

🏢 Summary: The offer is for a Full Stack Software Engineer to design and develop scalable backend services, RESTful APIs, and modern frontend applications using TypeScript and React or Angular. The role involves working with Python, PostgreSQL, and AWS-based cloud environments to deliver reliable, high-performance solutions. It also includes contributing to CI/CD pipelines and cloud-native infrastructure setup. 🗂️ Requirements: Strong experience with TypeScript, Proficiency in React or Angular, Backend and RESTful API development experience, Experience with Python, Knowledge of relational databases, Experience with PostgreSQL, Experience with AWS cloud services, Ability to work across the full stack, Experience with CI/CD pipelines, Experience with cloud infrastructure setup 📃 Skills: TypeScript, React, Angular, Python, REST, PostgreSQL, AWS, CI/CD, Kubernetes, Docker 🏢 Description: Do you enjoy building polished, user-friendly applications while working across the full stack? We are looking for a talented Full Stack Software Engineer to design and develop scalable backend services, RESTful APIs, and modern frontend applications using TypeScript and React or Angular. You’ll also get to leverage Python for backend scripting and work with cloud-native systems to deliver solutions that make a real impact. What You’ll Do: Build and maintain RESTful APIs and backend services in a cloud environment. Develop responsive frontend applications using React/TypeScript or Angular. Work with relational databases (PostgreSQL) and integrate multiple data sources. Ensure applications are reliable, scalable, and performant. Collaborate with stakeholders to translate requirements into high-quality technical solutions. Contribute to CI/CD pipelines, deployment automation, and cloud infrastructure setup. Must Haves: Strong experience with TypeScript and React or Angular Backend/API development experience and familiarity with Python Knowledge of relational databases and cloud-based systems (AWS preferred) Ability to work across the full stack and take ownership of solutions Nice to Haves: Experience with distributed systems or service-oriented architectures Familiarity with containers, Kubernetes, and cloud-native deployment patterns Exposure to data-intensive or analytics-driven applications

🏢 Summary: Full Stack Software Engineer role focused on building scalable backend services and RESTful APIs while developing modern frontend applications using TypeScript and React or Angular in a cloud environment. The position involves working across the full stack, leveraging Python, PostgreSQL, and AWS to deliver reliable, high-performance solutions. You will contribute to CI/CD pipelines and cloud infrastructure setup to support scalable deployments. 🗂️ Requirements: Strong experience with TypeScript, Strong experience with React or Angular, Backend and RESTful API development experience, Experience with Python, Knowledge of relational databases, Experience with cloud-based systems, Ability to work across the full stack 📃 Skills: TypeScript, React, Angular, Python, REST, PostgreSQL, AWS, CI/CD, Kubernetes, Docker 🏢 Description: Do you enjoy building polished, user-friendly applications while working across the full stack? We are looking for a talented Full Stack Software Engineer to design and develop scalable backend services, RESTful APIs, and modern frontend applications using TypeScript and React or Angular. You’ll also get to leverage Python for backend scripting and work with cloud-native systems to deliver solutions that make a real impact. What You’ll Do: Build and maintain RESTful APIs and backend services in a cloud environment. Develop responsive frontend applications using React/TypeScript or Angular. Work with relational databases (PostgreSQL) and integrate multiple data sources. Ensure applications are reliable, scalable, and performant. Collaborate with stakeholders to translate requirements into high-quality technical solutions. Contribute to CI/CD pipelines, deployment automation, and cloud infrastructure setup. Must Haves: Strong experience with TypeScript and React or Angular Backend/API development experience and familiarity with Python Knowledge of relational databases and cloud-based systems (AWS preferred) Ability to work across the full stack and take ownership of solutions Nice to Haves: Experience with distributed systems or service-oriented architectures Familiarity with containers, Kubernetes, and cloud-native deployment patterns Exposure to data-intensive or analytics-driven applications

🏢 Summary: Senior Full-Stack Engineer role with a 50/50 backend and frontend focus, building scalable microservices-based applications using ASP.NET (C#) and React with TypeScript in a cloud-native environment. The position involves designing and maintaining REST APIs, developing responsive user interfaces, ensuring high test coverage, and contributing to architectural decisions with strong technical ownership. Poland-based employment (Umowa o Pracę) with remote flexibility and quarterly in-person collaboration. 🗂️ Requirements: MSc+ in Computer Science or equivalent, Minimum 5 years experience with ASP.NET and C#, Minimum 5 years experience building REST APIs, Minimum 5 years experience with React, Experience with TypeScript, Strong knowledge of microservices architecture, Knowledge of cloud design patterns, Experience with unit, integration, and end-to-end testing, High level of technical ownership, Fluent English (minimum B2), Poland residency 📃 Skills: ASP.NET, C#, REST, React, TypeScript, Microservices, AWS, Agile, DDD, UnitTesting, IntegrationTesting, E2ETesting, Cloud 🏢 Description: We’re looking for a Senior Full-Stack Engineer who brings deep technical expertise and a collaborative mindset to our product development team. You will work with a modern microservices architecture, building scalable backend services using the ASP.NET Web API with C#, and intuitive frontend interfaces using mainly React and TypeScript. This is a hands-on engineering role with a 50/50 front-/backend focus, ideal for someone who likes to take ownership, thrives in a dynamic product team, and enjoys mentoring others. This role could easily become a Tech Lead role in a foreseeable future. If you're passionate about designing high-impact software in a cloud-native environment, we’d love to hear from you. This Poland-based role offers remote flexibility, but we value in-person collaboration. Our team meets in Poland for at least one week each quarter, so we request all applicants to be located in Poland. This is not a globally remote role. Poland residency is required. The contract form is Umowa o Pracę (only, no B2B). What you will be responsible for Collaborate proactively in refinement sessions with product and tech teams to ensure clarity and feasibility of features. Design, implement, and maintain scalable web APIs using ASP.NET and microservices architecture principles. Develop responsive user interfaces with React and TypeScript that enhance usability and performance. Work closely with Product Owners to clarify feature requirements and ensure business context is well-understood. Define, design and align feature architecture with the Head of Engineering to ensure consistency and scalability. Ensure features meet Definition of Done, with state-of-the-art unit, integration, and end-to-end test coverage. Support incident response and production issue resolution as per team standards. Actively contribute to team knowledge sharing and coach colleagues in technical best practices. What makes you a match Essential Qualifications: MSc+ in Computer Science or equivalent 5 years of proven experience in building secure REST APIs using ASP.NET , as well as developing solid front-end applications with React are non-negotiable must haves. Comprehensive knowledge of contemporary web application architectures, with a focus on microservices and cloud design patterns. Demonstrated ability of high technical Ownership and Tech Leadership are a requirement for this role. Bonus Skills: Hands-on experience with AWS infrastructure. Experience working in cross-functional product teams using Agile practices and following Domain-Driven Design (DDD). Collaboration and Interpersonal Skills: Clear and adaptive communication with both technical and non-technical stakeholders. Strong sense of ownership, accountability, and proactive problem-solving. Languages: English: B2 - (No certificate required, but Fluency) German, Polish, Ukrainian: desired, not required What you can expect A dynamic, ambitious team where your voice is heard, and your contributions truly matter. You’ll have real ownership over your decisions in a trusted, cross-functional environment within a Swiss product company that puts people first. We offer fair compensation, flexible working hours, a hybrid work setup, and a culture that supports both personal and professional growth, fostering a healthy work-life balance. Employer of Record: For this role, we offer employment through our trusted Employer of Record provider Remote.com , ensuring full legal compliance and a seamless experience for our team members in Poland. ID Verification: To maintain a fair and secure hiring process, candidates may be asked to verify their identity their identity before speaking with our Recruiter. This step helps us prevent fraud and focus our resources on genuine applicants. About us Who we are esurance is a Swiss InsurTech offering a SaaS platform that connects SMEs, insurance providers, brokers, and business application providers. Founded in 2013, we're on a mission to make health insurance for small businesses truly hassle-free. What makes us unique You'll be part of a connected, forward-thinking team built on trust, openness, and mutual respect — working hybrid from Zürich or remotely across Europe. We invest in your growth through agile practices, real ownership, and a transparent Grading System that ensures fair pay and clear career paths. Our core values We are connected. We are ahead. We are clear. We are approachable. Do these resonate with you? → Come join us. Our Recruitment Process & Principles We keep our process transparent and respect your time: Application Review — You hear from us within 5 business days. Always. Recruiter Screen — A relaxed Get2Know call to explore mutual fit. Four Interviews — Two Role Knowledge interviews (peer + supervisor), one Culture Match, one Leadership conversation. Batched into two days wherever possible. Hiring Decision — Thoughtful, timely. You'll know within 1–2 weeks. Use of Artificial Intelligence (AI) We use AI to increase productivity and you're welcome to use it to polish your CV or Coverletter. Interviews and assessments should reflect your genuine self, though. Recruiting Agencies: We don't work with unsolicited agency submissions. Thanks for respecting this.

🏢 Summary: Senior / Staff Full Stack Engineer role focused on building and scaling an AI-driven product platform in a fully remote setup. The position involves developing React/TypeScript frontend experiences and Python-based backend APIs to support document processing, retrieval systems, and structured AI/ML outputs. The engineer will integrate frontend, backend, and AI workflows into a reliable, testable product experience. 🗂️ Requirements: 5+ years full stack engineering experience, Strong Python backend API development experience, Strong React and TypeScript production experience, Experience with modern API frameworks (e.g. FastAPI), Experience designing and consuming API contracts and structured JSON, Experience with asynchronous workflows and background jobs, Testing experience covering edge cases and API behavior, Understanding of AI/ML product workflows 📃 Skills: Python, React, TypeScript, FastAPI, API, JSON, AI, ML, LLM, OpenAI, Gemini, Anthropic, Embeddings, Vector, Firebase, Firestore, GCP, CloudRun, CloudSQL, Neo4j 🏢 Description: We are looking for a Senior / Staff Full Stack Engineer with strong Python and React experience to build and scale an AI driven product platform in a fully remote setup. The role focuses on frontend experiences, backend APIs, document processing, retrieval systems, and structured AI / ML outputs. ✅ Your responsibilities: Building frontend experiences in React and TypeScript for evidence review, workflow status, recommendations, and decision outputs. Developing backend APIs in Python, ideally with FastAPI, for document upload, asynchronous processing, job status, retries, partial success, and structured results. Connecting frontend, backend, data workflows, retrieval systems, and AI generated outputs into a reliable product experience. Building product features that make AI outputs easier to inspect through source references, confidence signals, warnings, and clear error states. Working with structured data, documents, tables, financial metrics, and normalized evidence flows. Writing tests around API contracts, edge cases, error cases, and realistic user workflows. 🧠 Our requirements: 5+ years of professional full stack engineering experience. Strong experience with Python and backend API development. Strong experience with React and TypeScript in production applications. Experience with modern API frameworks, ideally FastAPI or similar. Understanding of AI / ML product workflows or strong interest in building software around AI outputs. Experience designing and consuming API contracts, schemas, and structured JSON payloads. Comfort with asynchronous workflows, background jobs, retries, partial failures, and user visible process status. Good testing habits, especially around edge cases, failure cases, and API behavior. ⭐ Nice to Have: Experience with AI / ML product workflows, including retrieval systems, embeddings, vector search, LLM based applications, or LLM APIs such as OpenAI, Gemini, Anthropic/Claude. Experience with data heavy products, including data workflows, document processing, data normalization, or working with structured evidence. Experience with cloud and data infrastructure, ideally Firebase, Firestore, Google Cloud Platform, Cloud Run, Cloud SQL, vector search, or Neo4j. 🌟 What we offer: 100% remote work Opportunity to work on modern ML/AI infrastructure Private healthcare and Multisport Life insurance Real influence on technical decisions and architecture Exposure to cutting-edge technologies Collaborative and supportive team environment

🏢 Summary: Full Stack Developer role focused on building scalable, cloud-native applications using React and C# .NET Core in a capital markets environment. The position involves developing microservices, REST APIs, data pipelines, and analytical solutions supporting credit and market risk domains. 100% remote B2B contract with flexible start date. 🗂️ Requirements: 4-5+ years of full stack development experience, Strong expertise in React, Strong expertise in C#, Experience with .NET Core, Experience with microservices architecture, Experience with event-driven architecture, Experience with distributed systems, Experience building REST APIs, Hands-on experience with Python, Experience with PySpark, Experience with Power BI, Experience with data modeling, Experience in credit risk and market risk domains 📃 Skills: React, C#, .NETCore, Microservices, REST, TypeScript, Python, PySpark, PowerBI, DataModeling, DistributedSystems, EventDriven, Cloud 🏢 Description: Start Date: ASAP / Within 1 Month / Flexible Work Model: 100% remote Contract Type: B2B (140-160 PLN/h + VAT) We are looking for a highly skilled Full Stack Developer with deep expertise in React for frontend development and C# .NET Core for backend services. This role requires hands‑on experience building scalable, cloud‑native systems, along with strong exposure to capital markets, especially within credit risk and market risk domains. Expectations Minimum 4-5 years of professional software development experience across frontend and backend technologies. Strong expertise in React, C# .NET Core , microservices, event‑driven architecture, and distributed systems. Hands‑on experience with Python (pyspark), Power BI dashboards, data modeling, and analytical reporting. Responsibilities Develop and maintain full stack applications using React, C# .NET Core, and modern cloud‑native technologies. Build scalable backend services, REST APIs, and microservices with a focus on performance and resilience. Implement modular, accessible, and high‑quality frontend components using React and TypeScript. Collaborate with business and risk experts to deliver solutions in credit risk, market risk, and capital markets workflows. Work with Python (pyspark) to build data pipelines, transformations, and analytics processes. What We Offer Medicover healthcare package Multisport card Access to an e-learning platform Group life insurance

🏢 Summary: Senior Full Stack Engineer role focused on building and maintaining production-ready backend and frontend features using Django and React, with high ownership and autonomy. The position involves end-to-end feature development, infrastructure and CI/CD contributions, and ensuring production stability and scalability. Candidates must be experienced engineers comfortable making independent technical decisions in a fast-paced environment. 🗂️ Requirements: Located in Poland, 6+ years of professional engineering experience, Experience as senior or lead-level engineer, Strong production experience with Django, Strong experience with modern React, Experience across backend and frontend or backend and infrastructure, Ability to design, ship, and maintain production systems, Experience with API design and data modeling, Performance optimization awareness, Ability to work autonomously and make technical decisions, Experience working in minimal-process environments, Strong communication skills, Experience with AI tools or strong motivation to use AI 📃 Skills: Python, Django, React, JavaScript, API, REST, CI/CD, AI, Git, SQL 🏢 Description: We are considering candidates located only in Poland. Client Our client is the world’s leading music company, committed to artistry, innovation, and entrepreneurship. Position overview We are seeking a Senior Full Stack Engineer with deep expertise in Python/Django and React to join our Release Products team. This role offers high autonomy and ownership, requiring you to design, build, and maintain production-ready features across backend and frontend systems. You will work closely with a senior engineering team, contributing to infrastructure and CI/CD improvements, and ensuring the stability and scalability of our production environment. Ideal candidates are T-shaped engineers who thrive in fast-paced, minimal-process environments and can make independent technical decisions while collaborating effectively. Responsibilities Build and maintain Django backend services Contribute meaningfully to a React frontend Own features end-to-end (design → deploy → production) Contribute to infrastructure and CI/CD where applicable Work directly with a senior engineering team with minimal oversight Take responsibility for the production system Requirements 6+ years of professional engineering experience Prior experience as a senior or lead-level contributor Comfortable operating with high autonomy Ability to ramp up quickly in existing production systems Strong communication skills and a proactive approach Solid AI skills and fluency in using AI tools, or a strong willingness and motivation to work with AI T-shaped engineer (deep in one area, strong in another) Experience across backend + frontend or backend + infrastructure Comfortable making technical decisions independently Used to working with experienced teams and minimal process Production Django experience (not just Python) Strong in API design, data modeling, and performance awareness Modern React experience (hooks, component architecture) Experience shipping and maintaining production UIs What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Hybrid Front-End / Fullstack Engineer role focused on building and maintaining modern web applications using Angular and Node.js for large-scale, business-critical projects in the financial services domain. The position involves working in an international team within a disciplined, quality-driven engineering environment. Responsibilities include development, code quality assurance, and contribution to CI/CD processes. 🗂️ Requirements: Strong experience with JavaScript, Strong experience with TypeScript, Hands-on experience with Angular, Experience with Node.js, Experience with NestJS, Very good knowledge of HTML5, Very good knowledge of CSS3, Very good knowledge of SCSS, Familiarity with CI/CD processes, Solid understanding of front-end best practices 📃 Skills: JavaScript, TypeScript, Angular, Node.js, NestJS, HTML5, CSS3, SCSS, CI/CD 🏢 Description: Front-End / Fullstack Engineer (JavaScript / TypeScript) Hybrid work model – 2 days per week from the office in Kraków We are looking for a Front-End / Fullstack Engineer with strong experience in JavaScript and TypeScript , who is comfortable working across both front-end and back-end technologies. The ideal candidate has hands-on experience with Angular and Node.js and enjoys collaborating with a strong, international team of engineers to build applications for a large-scale, business-critical initiative within the financial services domain. While solid technical foundations are essential, we are primarily looking for passionate engineers who are eager to continuously improve, challenge themselves, and work in a highly disciplined, verifiable, and quality-driven engineering environment . Your Responsibilities Design, develop, and maintain modern web applications using Angular and Node.js Collaborate closely with engineers, product owners, and stakeholders in an international environment Apply best practices in front-end development, ensuring high code quality and maintainability Contribute to CI/CD pipelines and development automation Actively participate in code reviews, technical discussions, and continuous improvement initiatives Core Skills & Requirements Strong experience with JavaScript and TypeScript Solid understanding of front-end best practices Hands-on experience with Angular Experience with Node.js and NestJS Very good knowledge of HTML5, CSS3, SCSS Familiarity with CI/CD processes Ability to work in a structured, disciplined engineering environment Strong communication skills and ability to work in an international team Nice to Have Experience with the ELK stack Experience using Ag-Grid Exposure to Google Cloud Platform or Alibaba Cloud Basic knowledge of or interest in Machine Learning What We Value Passion for clean, maintainable, and verifiable code Willingness to learn and continuously improve technical skills Ownership, accountability, and a proactive engineering mindset Team-oriented attitude and openness to feedback Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Full Stack Engineer role focused on building scalable and resilient applications within a cross-functional engineering team. The position involves backend and frontend development using modern JavaScript frameworks and enterprise databases, with containerization and CI/CD practices. Available as hybrid or remote engagement across several European countries. 🗂️ Requirements: Experience with Node.js, Experience with React, Strong knowledge of PL/SQL, Experience with Oracle databases, Experience with Docker, Experience with Kubernetes or ECS, Experience with CI/CD pipelines, Experience with Jenkins or GitLab CI or GitHub Actions, Experience with MongoDB or DynamoDB or PostgreSQL 📃 Skills: Node.js, React, PL/SQL, Oracle, Docker, Kubernetes, ECS, CI/CD, Jenkins, GitLab, GitHub, MongoDB, DynamoDB, PostgreSQL 🏢 Description: Dear Consultant, We are looking for an experienced Senior Full Stack Engineer to join a cross-functional engineering team focused on building scalable and resilient applications. 📍 Poland / Romania / Bulgaria / Spain / Czech Republic / Slovakia 🏠 Hybrid / Remote 💼 Employment Contract / B2B (depending on country) Must Have: • Node.js • React • PL/SQL • Oracle databases • Docker • Kubernetes / ECS • CI/CD • Jenkins / GitLab CI / GitHub Actions • MongoDB / DynamoDB / PostgreSQL Nice to Have: • Java / SpringBoot • Kafka • Microservices • Terraform / CloudFormation • GCP / BigQuery • German language 📩 DM me if interested. marcillina.tietjen@dcvtechnologies.co.uk DCV/CKL/JO/Re:18.05.2026

🏢 Summary: Full Stack Engineer (frontend-focused) role in an international team delivering scalable enterprise and cloud-native applications, with strong emphasis on modern frontend architecture and UI development. The position covers full software lifecycle, frontend architecture design, and integration with backend services. The role impacts product architecture, performance, and quality in complex digital transformation projects. 🗂️ Requirements: Very good knowledge of frontend architecture and best practices, Very good knowledge of HTML5, Very good knowledge of CSS3, Very good knowledge of JavaScript (ES6+), Experience with Angular, React or Vue, Experience with component-based architecture, Experience with state management (Redux, Zustand or Vuex), Experience integrating with REST API and/or GraphQL, Knowledge of authentication mechanisms (OAuth2, JWT, session-based auth), Basic knowledge of relational and NoSQL databases, General understanding of backend technologies (e.g. Spring Boot) 📃 Skills: HTML5, CSS3, JavaScript, TypeScript, Angular, React, Vue, Redux, Zustand, Vuex, REST, GraphQL, OAuth2, JWT, SQL, NoSQL, SpringBoot, CI/CD 🏢 Description: Poszukujemy doświadczonego Full Stack Engineera ze specjalizacją frontend , który dołączy do międzynarodowego zespołu pracującego nad nowoczesnymi, skalowalnymi aplikacjami klasy enterprise ☁️ Będziesz uczestniczyć w tworzeniu rozwiązań wspierających transformację cyfrową, modernizację interfejsów użytkownika oraz rozwój aplikacji cloud-native, mając realny wpływ na architekturę i jakość produktu. 🎯 Zakres obowiązków Udział w pełnym cyklu życia oprogramowania: od koncepcji po wdrożenie 🔄 Projektowanie i rozwój nowoczesnych interfejsów użytkownika 🌐 Przekładanie projektów UX/UI na responsywne i wydajne rozwiązania 🎨 Współpraca z UX Designerami, Backend Developerami i Product Managerami 🤝 Tworzenie architektury frontendowej opartej o komponenty i design systemy 🧩 Integracja frontendów z API i usługami backendowymi 🔗 Optymalizacja wydajności, skalowalności i kompatybilności aplikacji ⚡ Udział w code review, testach oraz procesach CI/CD ✅ Praca nad złożonymi projektami w środowisku międzynarodowym 🌍 Wymagania Bardzo dobra znajomość architektury frontend i dobrych praktyk Bardzo dobra znajomość: HTML5, CSS3 🧱 JavaScript (ES6+) 🟨 Doświadczenie z jednym z frameworków frontend: Angular (preferowany) 🅰️ React ⚛️ lub Vue 💚 Znajomość TypeScript będzie dużym atutem Doświadczenie z architekturą komponentową i state management (Redux, Zustand, Vuex) Doświadczenie w integracji z REST API i/lub GraphQL 🔌 Znajomość mechanizmów uwierzytelniania (OAuth2, JWT, session-based auth) 🔐 Podstawowa znajomość baz danych relacyjnych i NoSQL 🗄️ Ogólne zrozumienie technologii backendowych (np. Spring Boot)

🏢 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