Junior Front - End Engineer

🏢 Summary: Junior Front-End Developer role focused on building and enhancing web and mobile applications for a sports and coaching platform. The position involves developing new features, maintaining existing applications, and translating specifications into high-quality code within a modern frontend stack. This is a long-term opportunity working with React-based technologies in an international project environment. 🗂️ Requirements: Good knowledge of React, Good knowledge of TypeScript, Basic experience with React Native, Basic experience with Next.js, Understanding of modern frontend development principles, Experience with responsive UI development, Ability to troubleshoot and debug applications, Ability to translate specifications into code 📃 Skills: React, TypeScript, ReactNative, Next.js, Redux, Zustand, GraphQL, Tailwind, MongoDB, Docker, RabbitMQ, gRPC 🏢 Description: Nortal invites a Junior Front-End Developer for long-term and full-time/part - time employment at our service center in Krakow, Poland. About Nortal: We’re Nortal. We think big and create cutting-edge digital solutions with a global reach. And with 25 years of experience, 2,700+ professional experts, and half a billion people worldwide impacted by our work, we believe we’ve got the numbers to back up that statement. Our global teams have played a significant role in many Fortune 500 companies’ projects and systems and have been the driving force of digital transformation for governments, healthcare institutions, and leading enterprises worldwide. We combine best-in-class strategic consulting with software engineering, data, and design practices to bring our visions to life. About the client you’ll work with: You will join an extension team of our client Golazo Energy ( https://energy.golazo.com/sportslab/en/ ). Golazo Energy offers professional sports testing and coaching in its labs, through apps and online platforms. Do you want to have a real impact on people's lives? The mission of Golazo Energy is to get as many people exercising as possible. Golazo Energy is a part of the Golazo Group of Companies that organizes and markets major sports events internationally with activities in media and entertainment. The aim is to inspire people to exercise every day. So if you’re looking for a value-led business and a job that can change your life and others, Golazo Energy is the right place for you. Responsibilities: • Building new applications as well as developing existing ones • Customizing and implementing new features • Troubleshooting and debugging applications • Translating specifications into a solid code and configuration Qualifications Required Good knowledge of React and TypeScript Basic experience with React Native and Next.js Understanding of modern frontend development principles and responsive UI development Nice to Have Familiarity with Redux , Zustand , GraphQL , or Tailwind CSS Basic knowledge of MongoDB , Docker , or automated testing Exposure to backend technologies such as RabbitMQ or gRPC What We're Looking For Strong willingness to learn and grow as a developer Problem-solving mindset and attention to detail Ability to work both independently and as part of a team Good communication skills and a proactive attitude toward challenges Benefits • Benefit Café with categories such as sports, leisure, books, etc. • Supportive and inclusive work environment with personalized attention to each team member. • Engaging projects featuring innovative and cutting-edge products. • Competitive salary with periodic reviews. • Flexible working hours ensuring a healthy work-life balance. • Educational support, including funded language classes. • Luxmed private healthcare packages. • Comfortable workspace, fresh fruit Mondays, and remote work opportunities. • Exciting team events and networking opportunities. *Following the applicable legal regulations, particularly Directive (EU) 2019/1937 of the European Parliament and of the Council on the protection of persons reporting breaches of Union law and its implementation into Polish law under the Act of December 4, 2021, on the Protection of Persons Reporting Breaches of Law (Journal of Laws 2021, item 2105), including Articles 4-6 governing whistleblower protection and reporting procedures, the company has implemented a Whistleblower Support Policy, ensuring anonymity, protection, and support for individuals reporting irregularities.

🏢 Summary: B2B opportunity for an experienced Frontend Developer to build data-driven applications supporting scientific research and therapeutic target discovery. The role focuses on developing and optimizing modern React-based interfaces integrated with backend systems and cloud environments. You will collaborate in cross-functional teams delivering scalable solutions for clinical and research data platforms. 🗂️ Requirements: 4+ years experience as Frontend Developer, Strong JavaScript and TypeScript proficiency, Commercial experience with React (hooks, state management, architecture, performance), Experience with REST API design and integration, Practical experience with Node.js, Knowledge of modern frontend tooling (Webpack or Vite, ESLint, Prettier), Experience with testing frameworks, Experience with design systems and component libraries, Knowledge of accessibility standards and responsive design, Understanding of clean code and modular design principles, Good knowledge of Python 3.x, Knowledge of relational and NoSQL databases, Experience with Docker, Experience with AWS or GCP, Experience with Unix or Linux and Bash, Fluent English (C1) 📃 Skills: JavaScript, TypeScript, React, REST, Node.js, Webpack, Vite, ESLint, Prettier, Python, PostgreSQL, Snowflake, DynamoDB, Docker, AWS, GCP, Linux, Unix, Bash, Playwright, Cypress, Jest, FastAPI, Flask 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers.If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Frontend Developer to join a team whose main mission is to deliver data to scientists. This data is used to identify new therapeutic targets within the research and development program and to provide human genetics insights for clinical research. We offer a B2B contract: 130 – 150 PLN net/hour + VAT You might be the perfect match if you are/have: ✅ Core technical skills: 4+ years of experience as a Frontend Developer; Strong proficiency in JavaScript/TypeScript with solid experience in React (hooks, state management, component architecture, performance optimisation); Experience in API design and integration (REST) and effective collaboration with backend teams; Practical experience with Node.js for tooling, build scripts or lightweight backend services; Good understanding of modern frontend tooling and ecosystem : Webpack/Vite, ESLint/Prettier, package managers, testing frameworks; Experience working with design systems , component libraries, accessibility standards and responsive UI; Strong understanding of software engineering best practices — clean code, modular design, code reviews, documentation. ✅ Complementary full-stack strengths: Good knowledge of Python (3.x) as a supporting skill in cross-functional environments; Understanding of relational and NoSQL databases (Postgres, Snowflake, DynamoDB); Experience with Docker and cloud platforms (AWS / GCP), supporting efficient FE–BE integration; Comfortable working in Unix/Linux environments and with Bash scripting. ✅ Ways of working: Proactive and self-driven, able to propose improvements and push initiatives forward; Strong team player with great communication skills; comfortable participating in design discussions and code reviews; Positive, solution-oriented mindset; Quick learner, eager to grow and expand technical skills; Fluent English (C1) for effective collaboration in international environments; Location in Poland (at least 5 years); Available within one month . Moreover, we appreciate skills in these areas: Experience with CI/CD pipelines for building and deploying FE applications; Familiarity with Python frameworks like FastAPI/Flask (useful in integration work); Experience with testing tools such as Playwright , Cypress, or Jest; Interest in Life Sciences/Drug Discovery domain. By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: 1) You will be invited to an HR Screening with our IT Recruiter. 2) You will have a technical interview. 3) You will meet with a client. Submit your application online in one easy step! Apply now!

🏢 Summary: Frontend Engineer role focused on building enterprise AI applications using Next.js, React, and TypeScript in a fully on-site Warsaw office environment. The position involves developing real-time AI interfaces, managing complex frontend state, improving performance and accessibility, and contributing to technical decisions. Candidates will work with modern AI development tools and enterprise-scale frontend systems. 🗂️ Requirements: 3–5 years of frontend engineering experience, Strong knowledge of React, Strong knowledge of TypeScript, Strong knowledge of Next.js, Experience building production Next.js applications, Understanding of SSR, SSG, and CSR, Experience with complex state management, Experience with real-time updates and optimistic UI, Experience building AI or LLM-based interfaces, Understanding of frontend performance and Core Web Vitals, Knowledge of accessibility and localization, Security-focused development approach, Experience using AI coding assistants, Good communication skills, Ability to work fully on-site in Warsaw 📃 Skills: React, TypeScript, Next.js, SSR, SSG, CSR, AI, LLM, CoreWebVitals, Localization, Accessibility, Security, GitHubCopilot, OpenAI, Claude, ReactFlow, Highcharts, RAG, MCP, DSPy, Node.js, Python 🏢 Description: Please note: This role requires working from our office in Warsaw city centre 5 days a week . This is a fully on-site position , and remote or hybrid work is not available . About us We believe that businesses are moving toward AI-powered work, and we are building a platform for this future. Many AI agents cannot handle complex business tasks. We created a platform that organizes company policies, workflows, and business knowledge into one AI data model. This helps AI agents make accurate decisions and deliver reliable results at scale. We already work with well-known enterprise customers such as Glovo, Nespresso, and HelloFresh. Our platform supports thousands of users and processes real production data. Customers trust us with important business knowledge because we provide a secure and reliable solution with SOC2, HIPAA-ready security practices, and strong integrations. Job description We are looking for a frontend engineer with several years of experience who wants to build user interfaces for enterprise AI products. You will help create applications that allow users to work with AI systems in a simple and reliable way. You will build production applications using Next.js, work with complex application state, real-time AI features, and modern frontend technologies. Over time, you will also take part in important technical decisions. The position is based in Warsaw and requires working from the office. Responsibilities Build and deliver production Next.js applications with complex state management and real-time AI features. Create user interfaces for AI-powered tools, including streaming AI responses, semantic search, knowledge graphs, and AI agents. Help improve our component library and design system to keep the UI consistent, reusable, and accessible. Develop enterprise features such as localization, accessibility, browser compatibility, and security. Monitor applications after release, improve performance, reduce bundle size, and track Core Web Vitals. Use AI tools every day to improve development speed and internal frontend workflows. Maintain high code quality through testing and code reviews. Requirements Around 3–5 years of experience as a frontend engineer. Strong knowledge of React, TypeScript, and Next.js. Experience building production Next.js applications and understanding the differences between SSR, SSG, and CSR. Good experience with state management, including real-time updates, optimistic UI, and multi-tenant applications. Experience building AI or LLM-based interfaces such as chat applications, streaming responses, or semantic search. Good understanding of frontend performance, Core Web Vitals, and user experience. A security-focused approach and knowledge of accessibility and localization. Experience using AI coding assistants as part of your daily development work. Good communication skills and the ability to explain technical decisions clearly. Nice to have Experience with React Flow, Highcharts, or other data visualization libraries. Experience building vector search, RAG, or semantic search interfaces. Knowledge of MCP, DSPy, or other modern AI frameworks. Basic understanding of Node.js or Python backend development. Contributions to design systems or open-source UI libraries. What we offer B2B contract and company stock options. MacBook Pro. Modern technology stack and the opportunity to contribute to open-source projects. An AI-focused development environment with tools such as Claude Code, OpenAI Codex, and GitHub Copilot. Our values Our leadership team has strong experience in AI, knowledge management, and enterprise SaaS. We have received more than $60 million in funding and have been recognized by Gartner as a Cool Vendor. Our work is guided by these values: Quality – We care about excellent work and high standards in everything we build. Momentum – We take initiative, share ideas, and keep moving forward. Accountability – We take responsibility for our work and give honest, respectful feedback. Hard work – We believe success comes from teamwork, dedication, and consistent effort. Learning agility – We stay curious, learn from mistakes, and continue improving. Adapt and thrive – We welcome change and see challenges as opportunities to grow. Win together – We work as one team, communicate openly, and support our shared goals.

🏢 Summary: B2B contract role for a Senior Frontend Developer to architect and build advanced single-page applications in the banking domain. The position focuses on frontend architecture, performance optimization, and integration with backend services using modern web technologies. Hybrid work model with collaboration across cross-functional teams. 🗂️ Requirements: Strong experience with HTML, Strong experience with CSS, Strong experience with JavaScript, Strong experience with TypeScript, Hands-on experience with Web Components, Hands-on experience with Lit, Good knowledge of Node.js, Knowledge of npm ecosystem, Experience with Vitest or similar testing frameworks, Experience integrating REST APIs, Experience integrating GraphQL APIs 📃 Skills: HTML, CSS, JavaScript, TypeScript, WebComponents, Lit, Node.js, npm, Vitest, REST, GraphQL 🏢 Description: We are looking for a Senior Frontend Developer for our client in the banking industry RESPONSIBILITIES Architect and implement advanced user interfaces and single-page applications using TypeScript and JavaScript Define and promote best practices for frontend architecture, state management and reusable components Optimize application performance, including load times and Core Web Vitals, ensuring smooth user experience across devices Collaborate closely with backend developers, UX/UI designers, and product managers Integrate frontend applications with REST and GraphQL APIs Ensure code quality through testing and participation in development lifecycle processes REQUIREMENTS Strong experience with HTML, CSS, JavaScript, and TypeScript Hands-on experience with Web Components / Lit Good knowledge of Node.js and npm ecosystem Experience with testing frameworks such as Vitest NICE TO HAVE Experience with CI/CD pipelines Familiarity with Kafka Knowledge of NinjaFork Experience working with messaging systems (MQ) WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 110-120 PLN/hour Hybrid work from Warsaw / Łódź / Gdynia / Gdańsk (3 times a week in the office) The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client Events and integration meetings, as well as participation in various initiatives, e.g., sports Access to the benefits offering (medical care, Multisport card) WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch.

🏢 Summary: Frontend Developer role focused on building scalable, high-performance, and user-centric web applications for global travel platforms. The position involves developing new features, maintaining existing applications, and collaborating closely with designers and backend teams to deliver intuitive user experiences. You will contribute to frontend architecture, code quality, and continuous improvement in an Agile environment. 🗂️ Requirements: Minimum 3 years commercial experience as Frontend Developer, Strong knowledge of JavaScript, Professional experience with React, Professional experience with TypeScript, Experience with Vue.js, Experience with CMS platforms (non-WordPress), Experience with testing frameworks (unit, integration, end-to-end), Understanding of CI/CD processes, Ability to write clean, testable, maintainable code, Very good command of English 📃 Skills: JavaScript, TypeScript, React, Vue, CMS, ReactHookForm, Webpack, Babel, Vite, Rspack, CI/CD, Next.js, Node.js, AWS 🏢 Description: We are looking for a Frontend Developer to join our team and help build modern, scalable, and user-centric digital products that support our global travel platforms. In this role, you will work closely with designers, backend developers, Product Owners, and business stakeholders to deliver intuitive and high-performing user experiences used by customers around the world. You will have a direct impact on the quality, usability, and evolution of our products. Your responsibilities Develop new user-facing features and maintain existing applications Write clean, maintainable, and efficient code following best practices Ensure high performance, scalability, and responsiveness across web applications Validate and process user input before sending data to backend services Collaborate with designers, developers, and business stakeholders to translate requirements into technical solutions Bridge the gap between design and technical implementation Ensure consistency, usability, accessibility, and responsiveness across digital products Contribute to the continuous improvement of frontend architecture, standards, and development practices Participate in code reviews and knowledge-sharing initiatives Troubleshoot, debug, and resolve application issues Our requirements Minimum 3 years of commercial experience as a Frontend Developer Strong knowledge of JavaScript and modern frontend development practices Professional experience with React and TypeScript Experience working with Vue.js Experience with CMS platforms (other than WordPress) Familiarity with tools such as React Hook Form, Webpack, Babel, Vite, or Rspack Experience with testing frameworks and different testing approaches (unit, integration, end-to-end) Understanding of CI/CD processes and development workflows Ability to write clean, testable, and maintainable code Strong problem-solving skills and attention to detail Good communication skills and very good command of English Nice to have Experience with Next.js Knowledge of Node.js Knowledge of AWS services and cloud-based solutions How we work Clean Code principles Design patterns and software engineering best practices Code reviews and knowledge sharing Static code analysis Continuous Integration and Continuous Deployment (CI/CD) Agile and collaborative development environment What we offer Hybrid work model (1–2 days per week in our Katowice office) Opportunity to work on international, large-scale projects used by customers worldwide Attractive remuneration paid in EUR Flexible working hours Individual learning and development budget Partially or fully funded training and certifications English lessons Mentoring and support from experienced technical leaders Participation in conferences in Poland and abroad A culture focused on collaboration, knowledge sharing, and continuous improvement Space to innovate and bring your own ideas to life Support for IT community initiatives and professional networking Long-term cooperation in a stable, growing international organization

🏢 Summary: Fullstack Developer role focused on building and maintaining modern web platforms and CMS solutions using Nest.js, React, and Next.js in a hybrid Warsaw-based environment. The position involves developing new features, improving code quality, writing tests, and collaborating with cross-functional teams on scalable web solutions. Candidates will work with modern development workflows, deployment pipelines, and AI-assisted development tools. 🗂️ Requirements: 3+ years of professional web development experience, Strong knowledge of Nest.js, Strong knowledge of Node.js, Strong knowledge of React, Strong knowledge of Next.js, Experience writing clean, maintainable, and testable code, Experience with code reviews and collaborative development, Experience with version control systems, Experience with deployment pipelines, Familiarity with AI-assisted development tools, Professional proficiency in English 📃 Skills: Nest.js, Node.js, React, Next.js, JavaScript, TypeScript, Git, CI/CD, HTML, CSS 🏢 Description: Fullstack Developer Location: Warsaw, Poland (Hybrid – 3 days in the office, 2 days remote) About Consid At Consid, we believe that great technology starts with great people. As one of the fastest-growing IT consulting companies in the Nordics, we help organizations accelerate their digital transformation by delivering innovative, high-quality software solutions. Our teams work on exciting international projects, combining technical excellence with collaboration, curiosity, and continuous learning. About the role We're looking for a Developer for one of our clients to help build new features and improve code quality across a modern web platform and content management systems. In this role, you'll work within established coding patterns, contribute to feature development, participate in code reviews, and continuously grow your technical expertise through mentorship from the Tech Lead and Senior Developers. You'll play an important role in supporting the client's global brand and marketing initiatives by delivering reliable, scalable, and high-quality web solutions. Your responsibilities Build new functionality from specification through to production within established coding standards and development practices. Develop and maintain backend services using Nest.js (Node.js) and frontend applications using React and Next.js . Investigate, troubleshoot, and resolve bugs while maintaining the existing codebase. Participate in peer code reviews, learn from feedback, and contribute to improving code quality. Write unit and integration tests while following established QA and testing practices. Work with version control systems and deployment pipelines throughout the development lifecycle. Utilize AI-assisted development tools and workflows to accelerate learning, improve productivity, and enhance software quality. Collaborate closely with the Tech Lead, Senior Developers, and cross-functional teams to deliver high-quality solutions. Requirements 3+ years of professional web development experience. Strong foundation in Nest.js (Node.js) for backend development and React / Next.js for frontend development. Experience writing clean, maintainable, and testable code. Experience working within code review disciplines and collaborative development environments. Comfortable working with version control systems and deployment pipelines. Familiarity with AI-assisted development and openness to using AI tools to accelerate development and improve productivity. Strong problem-solving and communication skills. Professional proficiency in English. Recruitment Process 1.  Screening Call (30 min): A short introductory conversation with our recruitment team to discuss your background, motivation, and role expectations. 2. Cultural Fit Interview: A meeting focused on collaboration style, communication approach, and how you operate in an international environment. 3.  Technical Interview: A deeper technical discussion covering data architecture, analytics engineering, and HR data topics, including a hands-on deep dive relevant to day-to-day responsibilities. 4.  Final Interview (45 min): A concluding conversation focused on behavioural aspects, leadership and ownership mindset, and managerial alignment.

🏢 Summary: Senior Frontend Engineer role focused on building enterprise-grade AI-powered Next.js applications with complex state management, real-time features, and scalable frontend architecture. The position involves creating advanced AI interfaces, improving performance and accessibility, and contributing to design systems in a fully on-site Warsaw office environment. Candidates will work with modern AI development tools and enterprise-scale frontend technologies. 🗂️ Requirements: 5+ years of frontend development experience, 3+ years of React experience, Strong TypeScript skills, Production experience with Next.js, Knowledge of App Router, Knowledge of Server Components, Understanding of SSR, Understanding of SSG, Understanding of CSR, Experience with complex state management, Experience with real-time updates, Experience with optimistic UI, Experience with multi-tenant systems, Experience building AI or LLM interfaces, Knowledge of frontend performance optimization, Experience improving Core Web Vitals, Understanding of accessibility standards, Understanding of localization, Understanding of frontend security, Experience handling sensitive data, Experience using AI coding assistants, Strong communication skills, Ability to work fully on-site in Warsaw 📃 Skills: React, TypeScript, Next.js, SSR, SSG, CSR, AI, LLM, CoreWebVitals, Accessibility, Localization, Security, ReactFlow, Highcharts, Node.js, Python, RAG, OpenAI, Codex, GitHub, Copilot 🏢 Description: Please note: This role requires working from our office in Warsaw city centre 5 days a week . This is a fully on-site position , and remote or hybrid work is not available . About us We believe that businesses are moving toward AI-powered work, and we are building a platform for this future. Many AI agents cannot handle complex business tasks. We created a platform that organizes company policies, workflows, and business knowledge into one AI data model. This helps AI agents make accurate decisions and deliver reliable results at scale. We already work with well-known enterprise customers such as Glovo, Nespresso, and HelloFresh. Our platform supports thousands of users and processes real production data. Customers trust us with important business knowledge because we provide a secure and reliable solution with SOC2, HIPAA-ready security practices, and strong integrations. Job description We are looking for a Senior Frontend Engineer who enjoys building high-quality user interfaces for enterprise AI products. In this role, you will design and build important frontend features, solve complex UI problems, and improve the user experience over time. You will take ownership of frontend architecture and help build production Next.js applications with complex state management, real-time AI features, and enterprise functionality. The position is based in Warsaw and requires working from the office. Responsibilities Design and build production Next.js applications that support complex state, high traffic, and real-time AI features. Create user interfaces for AI-powered tools, including streaming AI responses, semantic search, knowledge graphs, and AI agents. Build and improve our component library and design system to keep the user experience consistent, accessible, and reusable. Deliver enterprise features such as localization, accessibility, browser compatibility, and security. Monitor applications after release, improve performance, reduce bundle size, track Core Web Vitals, and help systems scale. Maintain high engineering standards through code reviews, testing, and mentoring other developers. Requirements More than 5 years of frontend development experience, including at least 3 years working with React and modern TypeScript. Strong experience building production applications with Next.js, including App Router, Server Components, and understanding SSR, SSG, and CSR. Experience managing complex application state, including real-time updates, optimistic UI, multi-tenant systems, and large amounts of data. Experience building AI or LLM-based interfaces such as chat applications, streaming responses, or semantic search. Strong knowledge of frontend performance and experience improving Core Web Vitals in large applications. Good understanding of accessibility, localization, security, and enterprise application standards. A security-focused approach and experience working with sensitive data. Strong product thinking and the ability to improve user experience without waiting for detailed designs. Experience using AI coding assistants as part of your daily development work. Good written and spoken communication skills and the ability to explain technical decisions clearly. Nice to have Experience with React Flow, Highcharts, or other data visualization libraries. Experience building vector search, RAG, generative AI, or semantic search interfaces. Basic knowledge of Node.js or Python to understand backend code and APIs. Experience contributing to design systems or open-source UI libraries. What we offer B2B contract and company stock options. MacBook Pro. Modern technology stack and the opportunity to contribute to open-source projects. An AI-focused development environment with tools such as Claude Code, OpenAI Codex, and GitHub Copilot. Our values Our leadership team has strong experience in AI, knowledge management, and enterprise SaaS. We have received more than $60 million in funding and have been recognized by Gartner as a Cool Vendor. Our work is guided by these values: Quality – We care about excellent work and high standards in everything we build. Momentum – We take initiative, share ideas, and keep moving forward. Accountability – We take responsibility for our work and give honest, respectful feedback. Hard work – We believe success comes from teamwork, dedication, and consistent effort. Learning agility – We stay curious, learn from mistakes, and continue improving. Adapt and thrive – We welcome change and see challenges as opportunities to grow. Win together – We work as one team, communicate openly, and support our shared goals.

🏢 Summary: Mid-level Frontend Developer role focused on building modern, scalable React-based interfaces for a renewable energy platform within a monorepo architecture. The position involves high-quality, testable code development with occasional backend contributions and participation in architectural decisions. Hybrid work model with on-site presence required. 🗂️ Requirements: Minimum 2 years of frontend development experience, Commercial experience with React, Willingness to work on backend tasks, Experience working with APIs, Familiarity with PostgreSQL or MySQL, Proficiency with Git and git-flow 📃 Skills: React, JavaScript, PostgreSQL, MySQL, API, Git, git-flow 🏢 Description: 🔥 Frontend Developer Wanted - Energize Our Renewable Energy Platform! Hey, are you a Frontend enthusiast ready to code for a cause? We're on a mission to revolutionize renewable energy and need your expertise to accelerate our impact. Dive into a role where your coding fuels sustainability and your decisions shape the future. We’re mainly looking for Mid-level developers , but we’re also open to Juniors with at least 1 year of commercial experience . What You'll Tackle: 🟪 Responsibilities: Building Outstanding Interfaces : Use your React expertise to develop modern, intuitive, and user-friendly interfaces within our monorepo architecture. Quality-First Development : Write clean and maintainable code with a focus on unit testing to ensure scalability and reliability. Collaborating Across the Stack : While your focus will be frontend, you’ll also have the chance to contribute to backend development. Shaping the Future : Be involved in architectural decisions, tool selection, and best practices to ensure technical excellence. Teamwork that Matters : Work closely with the client and your team to deliver solutions that make a real impact on sustainability. 🟪 Requirements: Frontend Experience : 2 years of experience in frontend development (React as your main tool). Openness to Backend : Willingness to occasionally work on backend tasks. Database Knowledge : Familiarity with PostgreSQL or MySQL. API Savvy : Solid experience working with APIs. Communication Skills : Strong collaboration abilities and at least a B2 level of English. Version Control : Proficiency with git and the git-flow process. 🟪 Nice to have: Experience with Ruby on Rail or different backend technologies Familiarity with Postgresql  Work mode : Hybrid – at least 3 days per week on-site at our office in Gliwice, Silesia .

🏢 Summary: Front-End Developer role focused on building high-quality, design-driven e-commerce stores for global DTC brands using a modern tech stack. The position involves creating responsive, performant, and accessible user interfaces while collaborating closely with a senior engineering team. It offers clear growth levels and end-to-end ownership of features from concept to deployment. 🗂️ Requirements: Minimum 2 years of experience with JavaScript, Minimum 2 years of experience with HTML, Minimum 2 years of experience with CSS, Experience building responsive layouts, Knowledge of web performance best practices, Knowledge of accessibility standards, Knowledge of SEO principles, Experience integrating third-party APIs, Fluent Polish language, Communicative English (verbal and written) 📃 Skills: JavaScript, TypeScript, HTML, CSS, Sass, React, Remix, Next.js, Shopify, Hydrogen, Liquid, Oxygen, Vercel, Cloudflare, APIs, SEO, CoreWebVitals 🏢 Description: More about us and our projects [ click ] Hey! We’re looking for a talented Front-End Developer to help us build beautiful e-commerce stores for some of the world’s best DTC brands. If you want to level up your front-end skills, work in a modern tech stack, and be part of a senior team - this role is for you. We also take growth seriously. We have four clearly defined engineering levels (SE I, SE II, Senior SE I, Senior SE II), each with explicit expectations. You’ll always know where you stand and what’s required to reach the next level. What we do Since 2019, we’ve worked with brands like Lady Gaga, Carhartt WIP, Magda Butrym and Rolex , and collaborated with designers from Pentagram , ex-Tesla , and ex-Apple . We're focused entirely on eCommerce , and our goal is simple: to be one of the best eCommerce tech teams in the world . About the Role Skills we're looking for 2+ years of experience in Javascript, HTML and CSS Experience in building high-quality, responsive layouts Eye for the design detail and caring about user experience Awareness of web performance best practices (Core Web Vitals), developing for accessibility and SEO Interpreting and working with third-party APIs Communicative in both verbal and written English Fluency in Polish language What makes a strong fit You think in trade-offs - when you choose an approach, you can explain why and what you're giving up You own your work end-to-end: from unclear brief to deployed feature, including the parts nobody explicitly asked you to handle When something isn't going to plan, you raise it early - and you bring a proposal, not just the problem You can explain a technical decision clearly to a developer and a PM in the same conversation Nice to have: Experience in e-commerce (any platform) What it’s really like to work here At Commerce-UI, we trust each other’s judgment and take pride in our craft. Everyone here owns their work - not because someone expects it, but because we care about what we build and the people we build it with. We believe in high standards and flexibility, and we back that with real autonomy from day one. You’ll quickly see how we operate: fast, focused, and with a lot of trust that everyone knows what they’re doing. We don’t rely on layers of management or rigid playbooks. Instead, we collaborate closely, share context openly, and help each other grow. Things move quickly, but that’s part of the fun - it’s how we learn, adapt, and ship meaningful products for iconic brands. If you value ownership, clarity, and a team that believes in mutual trust and high craftsmanship, you’ll feel right at home with us. Why you’ll love working here Small, senior, passionate team - no bureaucracy, real impact Work on ambitious, design-led projects for global brands Freedom to shape how we build things Competitive pay and flexible, remote-friendly culture Our Tech stack Shopify Hydrogen (React-Router 7/Remix) or Next.js Oxygen, Vercel, Cloudlfare Shopify Liquid/Online Store 2.0 Typescript (always) CSS, Sass, CSS Modules, Stitches, Vanilla extract Toolkit Cursor, Webstorm ChatGPT Google Workspace Jira Notion Loom Team Most of the time, you’ll collaborate closely with: Tomek and Kuba - Engineering Managers Robert - Head of Project Management Michał - Co-Founder & CTO Szymon - Co-Founder How our hiring process looks like? Application → send us your CV and any link/portfolio that show your craft. We review every application and always get back to you - regardless of the outcome. Discovery call → this is short (30 minutes) mutual check-in - we want to understand your expectations and share ours. We will talk in Polish, and English. Task → a short focused task based on the kind of work we actually do. 1-1,5 hours with clear instructions. We respect your time. Tech call → a deep dive into how you think and solve problems. You’ll chat with Kuba or Tom (our Engineering Managers) - no trick questions, just real talk about tech and delivery. Offer → if it’s a match, we’ll schedule a short call (20-30 minutes) to go over the details and next steps. If we don’t move forward we’ll do our best to give you thoughtful feedback.

🏢 Summary: Senior Frontend Developer role focused on building and maintaining complex cloud-based web applications for network configuration, monitoring, and optimization. The position involves developing new features, maintaining a custom UI component library, and contributing to code and UX reviews within a global team. Hybrid work model with long-term B2B cooperation. 🗂️ Requirements: 5+ years experience building complex web applications, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of HTML5, Strong knowledge of CSS3, Experience with React, Experience with Redux, Experience with Redux Toolkit, Experience writing well-tested maintainable code, Experience with REST API integration, Proficient English communication skills 📃 Skills: JavaScript, TypeScript, HTML5, CSS3, React, Redux, ReduxToolkit, REST, Cypress, ReactTestingLibrary, Webpack, Lerna, Storybook, Cytoscape, ChartJS, MapLibre 🏢 Description: For a client, we are looking for a Senior Frontend Developer Salary: 150-170 net+VAT B2B Hybrid model: 1 day per week from the office in Warsaw or Kraków RESPONSIBILITIES About our Team As a team member, you will have the possibility to participate in the whole development process in Network Cloud Team projects. The primary objective of our applications is to set up, configure, monitor, and optimize servers and networks for clients globally. Working in our team allows you to learn various network automation techniques, be part of and create a mobile network future, develop cloud-based applications and have a real impact on how it will look like. Role and Responsibilities Develop new features, as well as maintain existing ones. Implementation and maintenance of custom UI components library. Participate in code review, as well as UX design review. Cooperation with colleagues from other Centers around the world. REQUIREMENTS 5+ years of experience building complex web applications using JavaScript, TypeScript, HTML5, CSS3. Experience with React, Redux and Redux Toolkit; Familiarity writing well-tested, maintainable code (knowledge of Cypress.io and React Testing Library is a plus). Familiarity with REST API integration Proficient English communication skills. NICE TO HAVE Experience with Webpack; Experience with Lerna or other mono-repo solutions; Experience with Storybook and component libraries development; Experience with data visualization (knowledge of Cytoscape.js, react-chartjs-2, maplibre or similar libraries is a plus); WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 150-170 PLN/hour Hybrid work from Warsaw or Cracow (1 times a week in the office) The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, life insurance, Multisport card). WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl