Mid-Level React & Fullstack Developer – Payments Platform

🏢 Summary: Backend Engineer role focused on building and modernising a global payments platform using Java and microservices architecture. The position involves developing reliable backend services and creating robust test automation frameworks to ensure high-quality, scalable payment processing. The role supports migration from legacy systems to API-driven, microservices-based solutions in an Agile/DevOps environment. 🗂️ Requirements: Strong experience with Java 11+, Hands-on experience in software testing and automation frameworks, Understanding of REST APIs, Knowledge of microservices architecture, Experience with Git, Experience with Unix/Linux environments, Experience with SQL databases, Experience with Spring and Spring Boot 📃 Skills: Java, Spring, SpringBoot, SQL, Oracle, Git, Unix, Linux, REST, Microservices, Automation, Testing 🏢 Description: Build the platform that moves money around the world We’re looking for a Backend Engineer with strong Java and test automation experience to join the team behind a global payments platform that enables businesses and customers to move money quickly, securely, and globally . The platform powers international payments that help organisations pay suppliers, process salaries, transfer funds, and pay taxes directly to authorities through multiple channels. You’ll play a key role in modernising payment systems , building high-quality microservices , and developing automation frameworks that ensure reliability at scale . As part of the engineering team, you’ll help design and build reliable payment services used globally. You will: Develop and maintain backend services and microservices in Java (11/17/21) Design and implement robust test automation frameworks to ensure high-quality software delivery Support the modernisation of legacy systems , migrating towards API and microservices-based architecture Improve system efficiency by increasing Straight-Through Processing (STP) capabilities Collaborate closely with engineers, testers, and stakeholders in an Agile/DevOps environment Contribute to scalable, resilient solutions powering global payment flows Must-have experience Strong development experience with Java 11+ (Java 17+ preferred) Hands-on experience in software testing and building automation frameworks Solid understanding of RESTful APIs and microservices architecture Experience working with Git for version control Comfortable working in Unix/Linux environments and command-line tools Experience with databases and SQL (Oracle preferred) Experience with Spring / Spring Boot Nice to have Experience with Test-Driven Development (TDD) Knowledge of scripting languages such as Python or Bash Experience working within a QA or testing-focused team Understanding of application monitoring and observability tools The role has a Hybrid model : candidates form Cracow 6x per month, outside of Cracow 3 - 5 x per month, from Warsaw 6x per month

🏢 Summary: Frontend Engineer role focused on building and supporting a large-scale global payments platform using modern React and TypeScript. The position involves developing front-end applications and collaborating on microservices within an Agile, DevOps-oriented environment. The engineer will enhance payment flows, automation testing, and operational tooling. 🗂️ Requirements: Minimum 6 months experience in payments or disbursements domain, Strong knowledge of React 18, Strong knowledge of TypeScript 5, Strong knowledge of Bootstrap 5, Experience with Java 8 or higher, Understanding of RESTful microservices and APIs, Experience with SQL and databases, Experience with legacy UX technologies (JSP), Understanding of DevOps ways of working 📃 Skills: React, TypeScript, Bootstrap, Java, REST, SQL, JSP, Microservices, DevOps 🏢 Description: Frontend Engineer – React / TypeScript 📍 Kraków | Hybrid (2 days per week from the office) 💼 B2B | 180–220 PLN/h We are looking for a Frontend Engineer to join a regional EMEA technology team working on the Global Disbursements platform - a large‑scale payments system enabling customers and businesses to move funds quickly and securely across markets. What you will be doing: • Develop, maintain and support front‑end applications and microservices • Work with React 18, TypeScript 5, Bootstrap 5 • Build and support services in collaboration with backend teams using Java 8/11/17 and Spring Boot • Contribute to improving observability and operational tooling for payment flows • Support automation testing frameworks to reduce testing costs • Enhance Straight‑Through‑Processing (STP) capabilities of services • Collaborate with engineering, product and DevOps teams in an Agile environment What we are looking for: • At least 6 months of experience in the payments/disbursements area • Strong knowledge of React 18, TypeScript 5, Bootstrap 5 • Experience with Java 8+ (Java 17+ is a plus) • Working understanding of RESTful microservices and APIs • Experience with SQL and database technologies • Previous experience with legacy UX technologies (e.g., JSP) • Understanding of DevOps ways of working Nice to have: • Knowledge of Spring / Spring Boot • Experience working in DevOps delivery teams • Familiarity with legacy UI technologies 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.

🏢 Summary: Frontend Engineer role focused on building and maintaining front-end applications for a large-scale global payments platform. The position involves working with modern React and TypeScript stack, collaborating with backend teams, and enhancing payment processing and observability tools. The role is delivered in a hybrid model within an Agile, DevOps-oriented environment. 🗂️ Requirements: Strong knowledge of React 18, Strong knowledge of TypeScript 5, Strong knowledge of Bootstrap 5, Understanding of RESTful microservices and APIs, Experience with SQL and databases, Experience with legacy UX technologies (e.g., JSP), Understanding of DevOps ways of working 📃 Skills: React, TypeScript, Bootstrap, REST, SQL, JSP, Microservices, APIs, DevOps, Agile 🏢 Description: Frontend Engineer – React / TypeScript 📍 Kraków | Hybrid (2 days per week from the office) 💼 B2B | 180–200 PLN/h We are looking for a Frontend Engineer to join a regional EMEA technology team working on the Global Disbursements platform - a large‑scale payments system enabling customers and businesses to move funds quickly and securely across markets. What you will be doing: • Develop, maintain and support front‑end applications and microservices • Work with React 18, TypeScript 5, Bootstrap 5 • Build and support services in collaboration with backend teams using Java 8/11/17 and Spring Boot • Contribute to improving observability and operational tooling for payment flows • Support automation testing frameworks to reduce testing costs • Enhance Straight‑Through‑Processing (STP) capabilities of services • Collaborate with engineering, product and DevOps teams in an Agile environment What we are looking for: • Strong knowledge of React 18, TypeScript 5, Bootstrap 5 • Working understanding of RESTful microservices and APIs • Experience with SQL and database technologies • Previous experience with legacy UX technologies (e.g., JSP) • Understanding of DevOps ways of working Nice to have: • Knowledge of Spring / Spring Boot • Experience working in DevOps delivery teams • Familiarity with legacy UI technologies • Experience with Java 8+ (Java 17+ is a plus) 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.

🏢 Summary: Fullstack Engineer role focused on developing and enhancing a Global Disbursement Platform that enables efficient global payment transfers. The position involves building and maintaining frontend and backend services, improving payment flow observability, and increasing Straight-Through-Processing capabilities using modern Java and React technologies. The role operates in an agile environment with a hybrid work model. 🗂️ Requirements: Minimum 6 months experience in payment disbursements, Proficiency in React 18, Proficiency in TypeScript 5, Proficiency in Bootstrap 5, Experience with Java 8 or higher, Knowledge of Spring and Spring Boot, Understanding of RESTful microservices and APIs, Familiarity with JSP, Experience with databases and SQL 📃 Skills: Java, Spring, SpringBoot, React, TypeScript, Bootstrap, JSP, SQL, REST, Microservices 🏢 Description: Location: Hybrid model people form Cracow/Warsaw 8x per month from the office. Contract: B2B – rate - we are open to your suggestions. Project Context: Focus on Global Disbursement Platform that manages various payment types. Summary: The role of Fulstack Engineer is focused on supporting the Global Disbursement Platform, enabling efficient and effective fund transfers across the globe for clients. This position is designed to contribute to high-quality project delivery through agile methodologies and robust stakeholder engagement. Main Responsibilities: Build and maintain frontend services and applications using Java 8/11/17, Spring Boot, and ReactJS. Develop interactive tools to simplify operational management and improve observability of payment flows. Implement automation testing frameworks to reduce testing costs. Enhance the Straight-Through-Processing (STP) capabilities of services. Key Requirements: Minimum 6 months experience in payment disbursements. Proficiency in React 18, TypeScript 5, and Bootstrap 5. Familiarity with legacy UX technologies such as JSP. Experience with Java 8+ (Java 17+ preferred). Understanding of ReSTful microservices and APIs. Knowledge of Spring/Spring Boot. Familiarity with database technologies and SQL. Experience working in a DevOps delivery team (preferred). Nice to Have: Experience with frontend design patterns. Previous roles in financial services or high transaction environments.

🏢 Summary: Frontend Engineer role focused on building scalable, responsive web applications for a global e-commerce platform using modern frontend technologies. The position involves developing reusable UI components, collaborating with cross-functional teams, and improving frontend architecture in a fully remote environment. The offer includes a COE contract, benefits package, and opportunities for continuous technical growth. 🗂️ Requirements: Degree in Computer Science or equivalent experience, 2–4 years of commercial frontend or software engineering experience, Experience developing production web applications, Knowledge of JavaScript, Knowledge of TypeScript, Knowledge of HTML, Knowledge of CSS, Experience with React ecosystem, Experience with React Router, Experience with Vite, Webpack, or Rsbuild, Experience with Zustand, TanStack React Query, or Redux, Experience with Tailwind CSS, HeroUI, or Material UI, Experience writing unit tests with Jest and Testing Library, Familiarity with Playwright or Cypress, Understanding of reusable component development, Familiarity with Git workflows, Basic understanding of CI/CD pipelines, Experience integrating REST APIs, Basic understanding of cloud applications, Basic SQL knowledge, Ability to work in Agile teams 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, ReactRouter, Vite, Webpack, Rsbuild, Zustand, TanStack, Redux, Tailwind, HeroUI, MaterialUI, Jest, TestingLibrary, Playwright, Cypress, Git, CI/CD, GitHubActions, Azure, AzureDevOps, Jenkins, REST, SQL, MySQL, PostgreSQL 🏢 Description: Position: Frontend Engineer Type of contract: COE (UoP) up to 17 000PLN gross/month Working model: fully remote You can join our client and work on a modern digital platform designed to better connect shoppers and retailers within the global e-commerce ecosystem. The project focuses on building and enhancing scalable web applications and core services that power user interactions. You’ll collaborate closely with product and design teams to deliver intuitive, high-performance user experiences. The environment emphasizes innovation, usability, and continuous improvement of frontend architecture. Role summary: As a Frontend Engineer , you will contribute to the development of modern, responsive web applications while working closely with cross-functional teams. You will be responsible for implementing user interfaces based on UI/UX designs, building reusable components, and ensuring high code quality. This role offers the opportunity to work with modern frontend technologies, collaborate with experienced engineers, and continuously develop your technical skills in a global e-commerce environment. Responsibilities: Develop and maintain modern, responsive user interfaces using React and TypeScript; Collaborate with designers, backend engineers, QA, and DevOps teams to deliver high-quality features; Translate UI/UX designs into clean, maintainable, and reusable code; Build reusable UI components and contribute to a consistent frontend architecture; Optimize application performance and improve user experience; Participate in code reviews and follow engineering best practices; Ensure cross-browser compatibility, responsiveness, and accessibility standards; Troubleshoot and resolve frontend issues while supporting continuous product improvements. Key requirements: Degree in Computer Science (or equivalent practical experience); 2–4 years of commercial experience in software engineering or frontend development; Hands-on experience in developing production web applications; Good knowledge of JavaScript, TypeScript, HTML, and CSS , with practical experience using TypeScript in commercial projects; Experience working with the React ecosystem , including React Router and modern build tools such as Vite, Webpack, or Rsbuild ; Experience with state management and data-fetching libraries such as Zustand, TanStack React Query, Redux , or similar solutions; Familiarity with modern component libraries and styling solutions such as Tailwind CSS, HeroUI, Material UI , or similar; Experience writing unit tests using Jest and Testing Library ; familiarity with E2E testing tools such as Playwright or Cypress is a plus; Understanding of reusable component development and frontend best practices; Familiarity with Git and collaborative development workflows; Basic understanding of CI/CD pipelines and release processes (GitHub Actions, Azure DevOps, Jenkins, or similar); Experience working with REST APIs and integrating frontend applications with backend services; Basic understanding of cloud-based applications; experience with Azure is an advantage; Understanding of relational databases and basic SQL knowledge (MySQL or PostgreSQL); Familiarity with monitoring and logging tools is considered a plus; Strong communication skills and the ability to work effectively within Agile teams; Proactive attitude, willingness to learn, and the ability to independently deliver well-defined features with attention to quality. Offer: COE (UoP), up to 17 000 PLN gross per month ; Private healthcare, life insurance, sports card, and lunch subsidy; Learning and development support (including tuition assistance); Employee Assistance Program; Fully remote work model supporting work–life balance; Opportunity to collaborate with experienced engineers on global-scale e-commerce solutions.

🏢 Summary: Principal Frontend Engineer role focused on leading the architecture of high-performance React and TypeScript applications for investment banking trading desks. The position sets technical direction, modernizing legacy internal frameworks and driving AI-assisted development practices. Includes ownership of Node.js BFF strategy and frontend testing standards in a hybrid setup. 🗂️ Requirements: 8+ years frontend engineering experience, Expert-level React, Expert-level TypeScript, Expert-level Node.js, Expert-level Cypress, Experience with AI coding assistants in production, Ability to architect high-performance frontend applications, Experience defining frontend testing standards 📃 Skills: React, TypeScript, Node.js, Cypress, JavaScript, AI, Copilot, Codeium, Neo, BFF 🏢 Description: Location: Krakow or Wroclaw (Hybrid: 3 days/week onsite) The Role Seeking a Principal Frontend Engineer for a global finance client. You will set technical direction for investment banking applications, bridging legacy internal frameworks with modern React and AI-assisted workflows. What You'll Do Architect high-performance React/TypeScript applications for trading desks Lead Node.js BFF layer strategy for complex UI state management Work with finance client's internal frameworks (Neo platform + internal design system) Define Cypress testing standards (e2e + component) across teams Drive adoption of AI coding assistants and establish best practices Must-Haves 8+ years frontend engineering experience Expert: React, TypeScript, Node.js, Cypress AI tools: Proven use of Copilot, Codeium, or similar in production Sounds like you? We'd love to chat! Send over your CV and meet the team 🚀

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

🏢 Summary: Hybrid Frontend Engineer role focused on building end-to-end developer-facing UI solutions for a Genkit-based platform. The position combines Angular frontend development with TypeScript-based CLI and backend services to deliver high-quality developer experiences and SDK integrations. Involves API integrations, testing, and collaboration on open-source and cross-functional initiatives. 🗂️ Requirements: Strong experience with Angular, Strong experience with TypeScript, Strong experience with JavaScript, Hands-on experience with CLI tools, Experience with developer platforms, Understanding of API integrations, Understanding of backend workflows, Experience with GitHub workflows, Ability to write unit and integration tests, Strong debugging skills 📃 Skills: Angular, TypeScript, JavaScript, CLI, APIs, GitHub, GCP, Firebase, Genkit, SDK, LLM 🏢 Description: Work mode: Hybrid (Kraków) – 3 days per week in the office Role Overview We are looking for a Frontend Engineer to contribute to the development of end-to-end developer-facing UI solutions for a Genkit-based platform. The role combines modern frontend engineering with CLI tooling and backend TypeScript services, focusing on building high-quality developer experiences and SDK integrations. Key Responsibilities Develop and enhance developer UI features using Angular Build and maintain CLI and backend services using TypeScript Design and implement developer-centric UX improvements Integrate with Genkit SDK , plugins, and external APIs Write and maintain unit and integration tests Participate in code reviews, pull requests, and issue resolution Contribute to open-source projects and collaborate with cross-functional teams (plugins, middleware, platform teams) Required Skills Strong experience with Angular, TypeScript, and JavaScript Hands-on experience with CLI tools and developer platforms Solid understanding of API integrations and backend workflows Familiarity with GitHub workflows (PRs, issues, code reviews) Strong debugging and problem-solving abilities Preferred Skills Experience with GCP / Firebase Exposure to LLM / agentic workflows Contributions to open-source projects (GitHub profile required)

🏢 Summary: B2B contract for a Frontend Engineer to develop and optimize modern web applications in React and TypeScript within a telecommunications project. The role focuses on high code quality, performance, and user experience, working in a hybrid model on scalable applications using Next.js and monorepo architecture. You will collaborate with a team of 5+ developers and contribute to product development with real impact. 🗂️ Requirements: 3–5 years of experience with React (Mid) or 5+ years (Senior), Very strong knowledge of TypeScript (strict mode, utility types, generics), Commercial experience with Next.js (SSR, API routes), Experience with state management (TanStack Query, XState or Redux), Experience with Tailwind CSS, Experience with React Hook Form and Zod, Experience in testing (Vitest, React Testing Library, Playwright), Experience working with monorepo (Nx or Turborepo), English level B2 minimum 📃 Skills: React, TypeScript, Next.js, TanStack, XState, Redux, Tailwind, ReactHookForm, Zod, Vitest, TestingLibrary, Playwright, Nx, Turborepo 🏢 Description: Branża: telekomunikacja Stawka: 150-180 zł/h na b2b Lokalizacja: Warszawa - hbryda 2 dni w tygodniu z biura Podsumowanie: Szukamy Frontend Engineera, który chce budować nowoczesne, wydajne aplikacje webowe i mieć realny wpływ na produkt. Dołączysz do zespołu liczącego minimum 5 osób i będziesz pracować nad rozwojem aplikacji z naciskiem na jakość kodu, performance oraz doświadczenie użytkownika. Zakres obowiązków: Tworzenie i rozwój aplikacji w React i TypeScript (strict mode) Praca z Next.js (SSR, API routes, podejście BFF) Zarządzanie stanem przy użyciu TanStack Query, XState oraz Redux (legacy) Budowanie formularzy z wykorzystaniem React Hook Form i Zod Pisanie testów (Vitest, React Testing Library, Playwright) Praca w architekturze monorepo (Nx lub Turborepo) Współpraca w modelu hybrydowym Wymagania: Doświadczenie w React: 3–5 lat (Mid) lub 5+ lat (Senior) Bardzo dobra znajomość TypeScript (strict mode, utility types, generics) Doświadczenie z Next.js (SSR, API routes) Znajomość zarządzania stanem (TanStack Query, XState lub Redux) Doświadczenie z Tailwind CSS Znajomość React Hook Form i Zod Doświadczenie w testowaniu (Vitest, React Testing Library, Playwright) Doświadczenie w pracy z monorepo (Nx lub Turborepo) Znajomość języka angielskiego na poziomie min. B2 Mile widziane: React Native i Expo Doświadczenie w pracy z jednym codebase dla web i mobile Znajomość Core Web Vitals (LCP, INP, CLS) Doświadczenie z narzędziami analitycznymi (np. Synerise, Quantum Metric) Znajomość OpenTelemetry Znajomość standardów WCAG 2.2 AA Doświadczenie z CI/CD (GitLab CI) Wykorzystanie narzędzi AI w pracy (testy, refactoring, code review)

🏢 Summary: Frontend Engineer role in the telecommunications sector focused on building modern, high-performance web applications using React and TypeScript. The position involves developing and maintaining applications in a monorepo architecture with strong emphasis on code quality, testing, and user experience. Hybrid work model with B2B contract. 🗂️ Requirements: 3–5+ years of experience with React, Strong knowledge of TypeScript (strict mode, generics, utility types), Experience with Next.js (SSR, API routes), Experience with state management (TanStack Query, XState or Redux), Experience with Tailwind CSS, Experience with React Hook Form and Zod, Experience with testing (Vitest, React Testing Library, Playwright), Experience working with monorepo (Nx or Turborepo), English level min. B2 📃 Skills: React, TypeScript, Next.js, TanStack, XState, Redux, Tailwind, ReactHookForm, Zod, Vitest, TestingLibrary, Playwright, Nx, Turborepo, SSR, CI/CD, GitLab, WCAG, OpenTelemetry 🏢 Description: Branża: telekomunikacja Stawka: 150-180 zł/h na b2b Lokalizacja: Warszawa - hbryda 2 dni w tygodniu z biura Podsumowanie: Szukamy Frontend Engineera, który chce budować nowoczesne, wydajne aplikacje webowe i mieć realny wpływ na produkt. Dołączysz do zespołu liczącego minimum 5 osób i będziesz pracować nad rozwojem aplikacji z naciskiem na jakość kodu, performance oraz doświadczenie użytkownika. Zakres obowiązków: Tworzenie i rozwój aplikacji w React i TypeScript (strict mode) Praca z Next.js (SSR, API routes, podejście BFF) Zarządzanie stanem przy użyciu TanStack Query, XState oraz Redux (legacy) Budowanie formularzy z wykorzystaniem React Hook Form i Zod Pisanie testów (Vitest, React Testing Library, Playwright) Praca w architekturze monorepo (Nx lub Turborepo) Współpraca w modelu hybrydowym Wymagania: Doświadczenie w React: 3–5 lat (Mid) lub 5+ lat (Senior) Bardzo dobra znajomość TypeScript (strict mode, utility types, generics) Doświadczenie z Next.js (SSR, API routes) Znajomość zarządzania stanem (TanStack Query, XState lub Redux) Doświadczenie z Tailwind CSS Znajomość React Hook Form i Zod Doświadczenie w testowaniu (Vitest, React Testing Library, Playwright) Doświadczenie w pracy z monorepo (Nx lub Turborepo) Znajomość języka angielskiego na poziomie min. B2 Mile widziane: React Native i Expo Doświadczenie w pracy z jednym codebase dla web i mobile Znajomość Core Web Vitals (LCP, INP, CLS) Doświadczenie z narzędziami analitycznymi (np. Synerise, Quantum Metric) Znajomość OpenTelemetry Znajomość standardów WCAG 2.2 AA Doświadczenie z CI/CD (GitLab CI) Wykorzystanie narzędzi AI w pracy (testy, refactoring, code review)