Front-end Software Engineer (m/f/n)

🏢 Summary: Senior Front-End Engineer role focused on designing and implementing a micro-frontend architecture for a large-scale, real-time incident reporting platform. The position involves transforming monolithic systems into scalable microservices-based solutions and ensuring high performance, security, and maintainability. The engineer will collaborate with cross-functional teams to deliver secure, cloud-ready web applications. 🗂️ Requirements: University degree in Computer Science or related field, Minimum 5 years of front-end development experience, Advanced knowledge of JavaScript and TypeScript, Strong experience with Angular framework, Practical experience with SPA and micro-frontend architectures, Experience with .NET and C#, In-depth knowledge of HTML5 and Web Components, Knowledge of web application performance optimisation and scalability, Understanding of web application security principles, Familiarity with cloud environments and container platforms 📃 Skills: JavaScript, TypeScript, Angular, SPA, Microfrontends, .NET, C#, HTML5, WebComponents, APIs, OpenShift, Cloud, Docker, Microservices 🏢 Description: For one of our business partners, we are looking for Senior Front-End Engineer (Micro-Frontends) . You will be joining a strategic project for a European institution , located in Warsaw, linked to security and border control activities. The project aims to develop a new generation of systems capable of reporting and disseminating information on incidents in real time. The solution will implement the new requirements set out in the regulation recently adopted by the European Commission. As a Senior Front-End Engineer, you will participate in the definition, design and implementation of the new platform, working closely with multidisciplinary teams to build scalable, secure and high-performance solutions: Design and implement solutions based on micro-frontend architecture . Participate in the transformation of monolithic applications into architectures based on microservices and micro-frontends. Analyse, optimise and improve the performance, scalability and maintainability of applications. Apply security best practices from the design phase (Security by Design). Collaborate with business analysts in defining and validating functional requirements. Work closely with backend and frontend teams to ensure integrated and consistent solutions. Produce high-quality technical documentation. Carry out code reviews and contribute to the continuous improvement of development standards. Support the analysis and design of user interfaces (UI/UX) For this role, we are seeking experts in front-end software development with: A university degree in Computer Science, Computer Engineering, Telecommunications, Information Technology, Business Administration and Management, or related disciplines. A minimum of 5 years demonstrable professional experience in front-end development . Advanced knowledge of JavaScript and TypeScript . Solid experience with modern frameworks such as Angular . Practical experience with SPA and micro-frontend architectures . Experience in .NET with C# . In-depth knowledge of HTML5 , Web Components and standard browser APIs . Knowledge of performance optimisation, scalability and security in web applications. Familiarity with cloud environments and container platforms (experience with OpenShift will be an advantage). Offer: Contract: B2B signed with Shimi Rate 1400 PLN/MD net+VAT Type of work: 100% remote (except the 1st day) Full time job Benefits : Multisport card and private medical care

🏢 Summary: Frontend Software Engineer role focused on building and maintaining scalable frontend applications using React and TypeScript, improving accessibility, testing, and frontend architecture. The position involves collaboration with cross-functional teams, working with legacy PHP/jQuery systems, and contributing to CI/CD and software quality practices. 🗂️ Requirements: 4+ years of experience as a Frontend Software Engineer, Expertise in React, Strong proficiency in TypeScript, In-depth knowledge of JavaScript, Good understanding of PHP, Experience with jQuery legacy frontend applications, Knowledge of software design patterns, Familiarity with OWASP Top 10, Experience with CSS-in-JS and SASS-managed applications, Experience with unit and integration testing, Experience with TDD and code reviews, Experience with REST API, Understanding of WCAG 2.1 accessibility standards, Experience with CI/CD workflows, Good English communication skills, Experience using AI-powered coding assistants, Work permit and ability to work from the European Union region 📃 Skills: React, TypeScript, JavaScript, PHP, jQuery, SASS, CSS, OWASP, TDD, REST, GraphQL, CI/CD, WCAG, Claude, Copilot, Cursor, AWS, Azure 🏢 Description: 🟣 You will be: developing and maintaining modern, scalable frontend applications, building responsive, accessible, and user-friendly interfaces, collaborating with cross-functional teams to deliver high-quality software solutions, writing clean, maintainable, and well-tested code while participating in code reviews, contributing to technical improvements, best practices, and the continuous evolution of frontend application. 🟣 Your profile: at least 4+ years of experience as a Frontend Software Engineer, high-level expertise and proficiencies using React and TypeScript as well as JavaScript in-depth knowledge, good understanding and proficiency in PHP and JQuery legacy frontend applications, strong knowledge and application of software design patterns, familiarity with OWASP top 10, experienced working with and creating interfaces using ‘CSS in JS’ components and in CSS-SASS managed applications, experience with Unit and Integration testing as well as code reviews (TDD), experience with REST API, understanding of GraphQL (desirable), proficiency with Continuous Integration and Deployment workflows, a good understanding of building accessible (WCAG 2.1) interfaces, good English communication skills with the ability to interact effectively with multi-disciplinary teams, practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery, Work from the European Union region and a work permit are required. 🟣 Recruitment Process: CV review – HR call – Technical Interview – Client Interview – Decision 🎁 Benefits 🎁 ✍ Development: development budgets of up to 6,800 PLN, we fund certifications e.g.: AWS, Azure, access to Udemy, O'Reilly (formerly Safari Books Online) and more, events and technology conferences, technology Guilds, internal training, Xebia Upskill. 🩺 We take care of your health: private medical healthcare, multiSport card - we subsidise a MultiSport card, mental Health Support. 🤸‍♂️ We are flexible: B2B or employment contract, contract for an indefinite period.

🏢 Summary: Mid-level Front-end Software Engineer role focused on building scalable, high-traffic web solutions for a large e-commerce platform. The position involves delivering medium to high complexity features, translating product and UX requirements into maintainable code, and contributing to front-end architecture decisions. This is a contractor role with high ownership in a product-driven environment. 🗂️ Requirements: Minimum 10+ years of experience as a Front-end Software Engineer, Strong knowledge of HTML, Strong knowledge of CSS, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Practical experience with React, Ability to develop scalable and maintainable front-end architecture, Experience ensuring code quality, performance, and accessibility, Experience working in cross-functional product teams, Ability to work independently and take technical ownership 📃 Skills: HTML, CSS, JavaScript, TypeScript, React, Accessibility, Performance, Architecture 🏢 Description: For our Client – one of the largest and most recognizable e-commerce platforms in Central Europe, serving millions of users daily and building large-scale, high-traffic digital products – we are currently looking for a Front-end Software Engineer (Mid-level) to join a product-driven environment focused on delivering high-quality, scalable web solutions. 📍 Warsaw - once per 2-3 weeks in the office only 🎯 Your Responsibilities Deliver medium to high complexity front-end features independently Translate product and UX requirements into clean, scalable, maintainable code Collaborate closely with Product Managers and UX/UI Designers Ensure high standards of code quality, performance, and accessibility Take ownership of delivered solutions in a contractor model (high autonomy expected) Contribute to team-level technical decisions and front-end architecture discussions Identify and address front-end technical debt 🔧 Required Experience & Skills Min 10 + years of experiance as a Front-end Software Engineer Solid understanding of HTML, CSS, JavaScript, and TypeScript fundamentals Practical experience with React (preferably with TypeScript) Ability to work independently and take accountability for outcomes Experience collaborating in cross-functional teams ⭐ Nice to Have Experience working on large-scale web applications Experience with cross-team front-end integrations Familiarity with design systems and component libraries Interest in scalable testing practices 🌍 What You Can Expect Long-term cooperation in a contractor model High-impact product environment with millions of end users Real ownership over features and technical solutions Modern engineering standards and strong product culture Occasional on-site workshops and team events 📍 Please note that we will contact only selected candidates. TQLO Sp. z o.o. – Employment Agency (KRAZ No. 33580)

🏢 Summary: Mid-level Front-end Software Engineer role focused on building scalable, high-quality web features for a large-scale, high-traffic e-commerce platform. The position involves translating product and UX requirements into maintainable React-based solutions while ensuring performance, accessibility, and code quality. The role offers high autonomy and ownership in a contractor model within a product-driven environment. 🗂️ Requirements: 10+ years of experience as Front-end Software Engineer, Strong knowledge of HTML, Strong knowledge of CSS, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Practical experience with React, Ability to deliver medium to high complexity front-end features independently, Experience working in cross-functional teams, Ability to ensure code quality, performance and accessibility standards 📃 Skills: HTML, CSS, JavaScript, TypeScript, React, Accessibility, Performance 🏢 Description: For our Client – one of the largest and most recognizable e-commerce platforms in Central Europe, serving millions of users daily and building large-scale, high-traffic digital products – we are currently looking for a Front-end Software Engineer (Mid-level) to join a product-driven environment focused on delivering high-quality, scalable web solutions. 📍 Warsaw - once per 2-3 weeks in the office only 🎯 Your Responsibilities Deliver medium to high complexity front-end features independently Translate product and UX requirements into clean, scalable, maintainable code Collaborate closely with Product Managers and UX/UI Designers Ensure high standards of code quality, performance, and accessibility Take ownership of delivered solutions in a contractor model (high autonomy expected) Contribute to team-level technical decisions and front-end architecture discussions Identify and address front-end technical debt 🔧 Required Experience & Skills Min 10 + years of experiance as a Front-end Software Engineer Solid understanding of HTML, CSS, JavaScript, and TypeScript fundamentals Practical experience with React (preferably with TypeScript) Ability to work independently and take accountability for outcomes Experience collaborating in cross-functional teams ⭐ Nice to Have Experience working on large-scale web applications Experience with cross-team front-end integrations Familiarity with design systems and component libraries Interest in scalable testing practices 🌍 What You Can Expect Long-term cooperation in a contractor model High-impact product environment with millions of end users Real ownership over features and technical solutions Modern engineering standards and strong product culture Occasional on-site workshops and team events 📍 Please note that we will contact only selected candidates. TQLO Sp. z o.o. – Employment Agency (KRAZ No. 33580)

🏢 Summary: Senior Frontend Engineer role focused on building and evolving a browser-based 3D design platform for modeling real-world physical systems. The position involves owning frontend features end-to-end, contributing to frontend architecture, collaborating across teams, and occasionally working with backend systems in a hybrid Warsaw-based setup. 🗂️ Requirements: 5+ years building production user interfaces in JavaScript and TypeScript, React experience, Knowledge of component-based frontend architecture, Experience integrating frontends with backend services and APIs, Ability to own features end-to-end, Willingness to work with backend code, Knowledge of system design, testing, refactoring, and technical writing, CS degree or equivalent production software experience, Fluent written and spoken English 📃 Skills: TypeScript, JavaScript, React, GraphQL, three.js, PostgreSQL, Ruby, Rails, Python, Playwright, Git, CAD 🏢 Description: 💰 Salary: 24,000 - 28,000 PLN/month 💻 Hybrid, Warsaw (2 Days/Week) 🕦 Full-time ☑️ Employment contract (UOP) via Employer of Record We're looking for a Senior Frontend Engineer for a software company whose platform lets professionals design real-world physical systems in an interactive, browser-based 3D environment. You'd join the team that owns the core of the product: the design surface where users model actual sites in a 3D canvas, backed by CAD tooling and a data model that keeps designs accurate to the physical world. Working stack: TypeScript, JavaScript, React, GraphQL, three.js, PostgreSQL, Ruby on Rails, and Python. A senior individual contributor role reporting into engineering leadership. You'll own features end-to-end, from technical design through to production support, and help steer the frontend architecture the team relies on. Requirements: 5+ years building production user interfaces in JavaScript and TypeScript React experience and a firm grasp of component-based frontend architecture Experience wiring frontends to backend services and APIs Comfort owning features end-to-end, from scoping through to production Willingness to step beyond the frontend when a feature calls for it, including reading and touching backend code (Ruby on Rails familiarity is a plus) Engineering fundamentals: system design, testing, refactoring, and clear technical writing A CS degree or an equivalent hands-on track record shipping production software Fluent in written and spoken English Nice to Have: GraphQL in production three.js or another 3D graphics library Ruby on Rails or Python Playwright or a comparable end-to-end testing framework Git in a collaborative, multi-engineer codebase Any exposure to CAD software Experience with distributed teams in a hybrid setup Key Responsibilities: Build and ship frontend experiences that make designing faster and more accurate Partner with Product, Design, and Engineering to scope, build, and release features Write clean, well-tested code and raise the bar through code reviews and technical discussions Strengthen reliability with automated tests and a share of the team's on-call rotation Contribute to shared frontend architecture, tooling, and technical standards Pick up backend work when it's needed to land the features you own Support a collaborative engineering culture through mentoring, planning, and cross-team work

🏢 Summary: Remote B2B contract role for a Senior Frontend Engineer to own and scale web and mobile experiences, including an AI-driven chat interface and complex health data UIs. The position focuses on building high-performance, production-grade applications using modern frontend technologies while collaborating closely with product and design. Candidates will drive frontend architecture, performance, and feature ownership in a fast-moving AI health tech environment. 🗂️ Requirements: 5+ years experience with React and TypeScript, Experience building production-level applications with real users, Strong frontend architecture and UI system design skills, Experience with web and mobile development, Ability to own features end-to-end, Experience with backend integration, Willingness to work weekends, Ability to work in fast-paced, ambiguous environment 📃 Skills: React, ReactNative, TypeScript, JavaScript, HTML, CSS, AI, Frontend, Mobile, Web 🏢 Description: Senior Frontend Engineer Location: Remote Europe or Poland preferred Type: B2B contract Compensation: 200,000 to 260,000 PLN base yearly plus up to 140,000.00 PLN vested over 4 years in Equity. Equity: Open to discussion About us We are building the intelligence layer for pet health. Our goal is to transform how pet owners and veterinarians understand, monitor, and act on health data. We combine AI, diagnostics, and longitudinal data to create a system that does not exist today. We are early, fast moving, and already working with real partners and data. What you will do Own the frontend across web and mobile experiences Build a fast, intuitive AI chat interface used daily by pet owners and vets Design and implement complex UI systems for health data, reports, and recommendations Work closely with product and design to ship quickly and iterate constantly Drive performance, responsiveness, and reliability at scale Help define the product, not just implement it What we are looking for Strong experience with React and TypeScript, 5+ Years Experience building production level apps with real users Eye for design and product quality Comfortable working in ambiguity and moving fast Ability to own features end to end Experience with Backend Willing to work weekends Bonus if you have worked on AI products, data heavy UIs, or health tech Tech stack React, React Native TypeScript Modern frontend tooling AI integrated workflows Why this role Working along some of the most famous engineers in AI like Soumith Chintala CTO of Thinking Machine Labs (Advisor) Direct impact on product, not just tickets Work on something genuinely new in AI and biology Fast iteration, real users, real data Equity Meaningful upside tied to company growth Early team member level ownership

🏢 Summary: Mid Frontend Engineer role focused on building interactive, high-performance frontend applications for a browser-based 3D design platform. The position involves developing scalable React and TypeScript solutions, integrating with backend services, and contributing to CAD-like user experiences in a collaborative engineering environment. Hybrid work model in Warsaw with full-time employment via Employer of Record. 🗂️ Requirements: 3+ years of commercial software engineering experience, JavaScript, TypeScript, React, Experience building component-based frontend applications, Experience integrating frontend applications with backend APIs, Understanding of testing, maintainable code, and code reviews, Ability to own features from design to production, Familiarity with backend systems, English B2+/C1, Strong communication and collaboration skills 📃 Skills: JavaScript, TypeScript, React, GraphQL, three.js, PostgreSQL, Ruby, Rails, Python, Playwright, CAD 🏢 Description: Salary: 18,500–21,700 PLN gross/month Location: Warsaw, Poland (Hybrid – 2 days/week in the office) Employment: Full-time Contract: Employment contract via Employer of Record We're looking for a Mid Frontend Engineer for a software company whose platform lets professionals design real-world physical systems in an interactive, browser-based 3D environment. You'd join the team that owns the core of the product: the design surface where users model actual sites in a 3D canvas, backed by CAD tooling and a data model that keeps designs accurate to the physical world. Working stack: TypeScript, JavaScript, React, GraphQL, three.js, PostgreSQL, Ruby on Rails, and Python. You'll join a collaborative engineering team building intuitive, high-performance user experiences for a technically complex product, while working closely with Product, Design, and Backend Engineering teams. Requirements - Minimum 3 years of commercial software engineering experience - Strong experience with JavaScript, TypeScript, and React - Experience building modern component-based frontend applications - Experience integrating frontend applications with backend APIs - Understanding of software engineering best practices, including testing, maintainable code, and code reviews - Ability to own features from technical design through implementation and production - Familiarity with backend systems and willingness to contribute beyond the frontend when needed - Strong communication and collaboration skills - Professional proficiency in English (B2+/C1) Nice to Have - Experience with Ruby on Rails or Python - GraphQL in production - three.js or another 3D graphics library - Experience with Playwright or similar automated testing frameworks - Experience working in hybrid or distributed engineering teams - Exposure to CAD or graphics-intensive applications Responsibilities - Build modern, scalable frontend applications using React, TypeScript, and JavaScript - Deliver intuitive user experiences for a complex web platform - Own features end-to-end, from technical design through implementation, testing, deployment, and production support - Collaborate closely with Product Managers, Designers, and Engineers to deliver impactful product features - Integrate frontend applications with backend services and APIs - Write clean, maintainable, and well-tested code - Participate in code reviews, technical discussions, and architecture improvements - Help improve frontend engineering practices, tooling, and application reliability - Contribute to backend development when needed as part of a collaborative full-stack engineering environment

🏢 Summary: Senior Software Engineer role focused on building scalable front-end and cloud-native applications, with flexibility for deep specialization in modern front-end technologies or AWS cloud engineering. The position involves designing serverless architectures, integrating APIs, managing databases, and implementing CI/CD pipelines in a collaborative environment. Regular on-site presence and strong English communication skills are required. 🗂️ Requirements: Minimum 8 years of commercial software development experience, Strong expertise in front-end development with component-based frameworks or AWS cloud engineering, Hands-on experience designing and delivering cloud-native applications, Experience with serverless architectures, Solid understanding of API design principles and distributed systems, Experience with CI/CD pipelines and deployment automation, Ability to communicate fluently in English, Availability for regular on-site work 📃 Skills: JavaScript, TypeScript, AWS, Serverless, REST, SQL, NoSQL, CI/CD, Docker, Kubernetes 🏢 Description: We are looking for a highly experienced Software Engineer with strong expertise in modern front-end technologies and cloud-based solutions. In this role, you will be responsible for designing and delivering scalable, high-quality applications in a highly collaborative and fast-paced environment. The position requires regular on-site presence and the ability to communicate effectively in English with both technical and non-technical stakeholders. Depending on your strengths, we welcome candidates with either deep front-end specialization or strong hands-on experience in cloud engineering, ideally combining both. Your tasks Develop and maintain applications using modern front-end technologies and strongly typed languages Design and implement scalable cloud-based architectures, including serverless solutions Build and integrate RESTful services to support application functionality Work with both relational and non-relational databases to manage and process data effectively Create and optimize automated deployment pipelines for continuous integration and delivery Collaborate with stakeholders to translate business requirements into technical solutions Requirements Minimum 8 years of commercial experience in software development using modern programming languages Strong hands-on expertise in either front-end development (including component-based frameworks) or cloud engineering (AWS) Practical experience designing and delivering cloud-native applications, preferably in a serverless environment Solid understanding of API design principles and best practices for distributed systems Experience working with CI/CD pipelines and deployment automation tools Excellent communication skills with the ability to explain technical concepts clearly, and fluency in English What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: The offer is for an experienced Frontend Developer to join a Web EU team building shared web and loyalty services. The role focuses on developing scalable, reusable UI components and modern web applications using Angular 16+, with active participation in architectural decisions and code reviews. You will collaborate in an Agile environment on global digital products used by millions of customers. 🗂️ Requirements: Minimum 3 years of commercial software development experience, Strong practical experience with Angular (v16+), Strong practical experience with TypeScript, Very good knowledge of RxJS, Experience with state management (Akita, Redux or NgRx), Experience with REST API integration, Experience with unit testing frameworks (Jest, Vitest or Angular Testing Library), Knowledge of software design principles and application architecture, Experience with CI/CD practices (GitHub Actions, GitLab CI, Azure DevOps or similar), Experience with Jira and Confluence, Experience working in Agile/Scrum methodology, Ability to conduct reliable code reviews, English proficiency at B2/C1 level 📃 Skills: Angular, TypeScript, RxJS, NgRx, Akita, Redux, REST, Jest, Vitest, AngularTestingLibrary, CI/CD, GitHubActions, GitLabCI, AzureDevOps, Jira, Confluence, Scrum, AngularMaterial, GraphQL, AWS, Nx, Java 🏢 Description: Wspólnie z naszym Partnerem z sektora paliwowo-handlowego poszukujemy doświadczonej osoby na stanowisko Frontend Developer/ki . Dołączysz do zespołu Web EU, który buduje współdzielone usługi webowe i lojalnościowe. 💡 TWOJA ROLA: Budowanie reużywalnych, skalowalnych komponentów UI. Projektowanie i rozwój nowoczesnych aplikacji webowych w Angular. Udział w ciągłym doskonaleniu procesów, narzędzi i standardów kodowania. Udział w dyskusjach architektonicznych i podejmowaniu decyzji technicznych. Code review i wsparcie innych członków zespołu poprzez dzielenie się wiedzą i mentoring. Ścisła współpraca z Product Ownerami, Business Analitykami, Architektami i QA Engineerami. 🔎 CZEGO OCZEKUJEMY OD CIEBIE? Min. 3 lata komercyjnego doświadczenia w tworzeniu oprogramowania – must have! Silne, praktyczne doświadczenie z Angular (v16+) i TypeScript – must have! Bardzo dobra znajomość RxJS i zarządzania stanem (Akita, Redux lub NgRx). Doświadczenie z REST API i frameworkami do testów jednostkowych (Jest, Vitest, Angular Testing Library). Znajomość zasad projektowania oprogramowania i ich wpływu na architekturę aplikacji. Znajomość praktyk CI/CD (GitHub Actions, GitLab CI, Azure DevOps lub podobne). Doświadczenie z Jira, Confluence i pracą w metodyce Agile/Scrum. Umiejętność przeprowadzania rzetelnych code review. Znajomość języka angielskiego na poziomie B2/C1. Mile widziane: Angular Signals, Standalone Components, zoneless applications, Angular Material, Domain-Driven Design, Nx monorepo, AWS, GraphQL, podstawy Java. ✨ OFERUJEMY: 🤖 Nowoczesny proces rekrutacji z AI Rekruterem (AIR) – rozmowa 24/7, natychmiastowy feedback, możliwość powtórzenia. Finalną decyzję zawsze podejmuje Rekruter Connectis. Udział w budowie globalnych produktów cyfrowych używanych przez miliony klientów. Pracę z nowoczesnym stosem: Angular 16+, TypeScript, RxJS, NgRx, CI/CD. Udział w meetupach technologicznych i spotkaniach integracyjnych. 🌍 Model hybrydowy – Warszawa (2 dni z biura tygodniowo). 5000 PLN za polecenie znajomych do naszych projektów. Wsparcie dedykowanej osoby kontaktowej z Connectis. Stabilna, długofalowa współpraca B2B. Dziękujemy za wszystkie zgłoszenia. Pragniemy poinformować że skontaktujemy się z wybranymi osobami. 12930/OM

🏢 Summary: Senior Frontend Engineer role focused on leading development of a high-traffic web application for shipping management and rate comparison. The position involves end-to-end frontend ownership, from translating designs into production-ready interfaces to optimizing performance and accessibility. You will shape architecture decisions and maintain standards within a React/TypeScript monorepo environment. 🗂️ Requirements: 8+ years of production frontend development experience, 3+ years in senior role within scale-up or start-up environment, Deep expertise in React and TypeScript, Strong knowledge of state management and component architecture, Proficiency in HTML semantics and modern CSS, Experience with web performance optimization and Core Web Vitals, Practical expertise in WCAG 2.2 AA accessibility standards, Experience with unit, integration, and end-to-end testing, Experience working with monorepos, Ability to contribute to frontend and API architecture decisions 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, Grid, Flexbox, WCAG, CoreWebVitals, Testing, Monorepo, API, AWS, Snowflake, Figma 🏢 Description: Senior Frontend Engineer Our Client is an ambitious tech company on a mission to create a frictionless shipping experience for SMEs. They wrap real-time pricing, comparison, booking, and tracking into a clean and unified interface, replacing outdated logistics processes with a seamless digital platform. Role We are looking for an experienced Senior Frontend Engineer to play a central role in shaping a web app where thousands of customers every week sign up, compare rates, manage integrations, and book shipments. You will work end-to-end—from understanding customer problems to shipping production code—while leading frontend work on a core value team (Customer Experience, Marketplace, or SaaS). Responsibilities Plan and lead frontend development within your value team, collaborating closely with PMs, designers, and backend engineers. Translate designs into production user interfaces that are accessible, performant, well-tested, and consistent with the rest of the product. Build prototypes to put working code in front of customers when validating product ideas. Own web performance on the surfaces you touch, ensuring excellent Core Web Vitals to boost conversion rates. Champion accessibility across the platform (WCAG 2.2 AA is the baseline). Contribute to architecture decisions that cross the frontend/backend line, including API boundaries and real-time updates. Maintain shared standards across a React/TypeScript monorepo through code reviews and technical councils. Mentor junior engineers and contribute to the evolution of the company's design system. Key competences 8+ years of experience writing production frontend code, with the last 3+ at a senior level in a scale-up/start-up environment. Deep React and TypeScript experience, with strong opinions on state management and component architecture. Solid web fundamentals: HTML semantics, modern CSS (Grid, Flexbox, container queries), browser rendering pipelines, and the network layer. Accessibility expertise as a practitioner skill, capable of spotting WCAG issues during design reviews. Fluency in web performance, measuring and optimizing Core Web Vitals on real products. High testing maturity (unit, integration, and end-to-end tests). Excellent written and spoken English communication skills. Bonus points for: Experience with large-scale monorepos, background in logistics/marketplaces/B2B SaaS, contributing to design systems, embedding AI-assisted features, or a working knowledge of Go. Salary and Conditions Salary up to 7000 Euro per month 100% remote from Poland B2B contract signed directly with our Client Start ASAP Benefits Work with a modern tech stack (React, TypeScript, AWS, Snowflake, Figma, Claude Code, etc.) A curious, collaborative, low-ego culture within a Great Place to Work certified environment