Node.js Developer

🏢 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: 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: Senior Frontend React Developer role focused on building scalable Next.js applications that power enterprise AI interfaces, including chat, semantic search, and knowledge graph features. The position involves developing high-performance, real-time, and data-intensive user interfaces with strong emphasis on accessibility, security, and code quality. You will contribute to reusable design systems, performance optimization, and AI-assisted development in a modern tech stack. 🗂️ Requirements: 5+ years frontend development experience, 3+ years experience with React, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of Next.js including SSR, App Router, Server Components, Advanced TypeScript skills, Experience with modern CSS solutions (Tailwind CSS or CSS-in-JS), Experience with complex state management, Experience with real-time collaboration features, Experience building AI-related interfaces (chat, streaming, semantic search), Understanding of localization, Understanding of accessibility standards, Understanding of security standards, Experience with AI coding tools (OpenAI Codex or Claude), Upper-Intermediate (B2) English or higher 📃 Skills: React, Next.js, JavaScript, TypeScript, SSR, Tailwind, CSS-in-JS, SWR, WebSockets, ReactFlow, Highcharts, Storybook, Playwright, Node.js, Python, AWS, S3, CloudFront, Lambda, OpenAI, Claude, Codex, Copilot, Puppeteer, Cypress, Lerna, Turborepo, Nx, MCP, DSPy 🏢 Description: About Us Many companies want to use AI agents, but these tools often have problems with real business tasks. We create a platform that helps AI understand company rules, workflows, and processes, so it can give correct and reliable answers. Our technology is trusted by large international companies and works with leading AI and cloud platforms. Our goal is to help people find better answers and make better decisions with AI. Senior Frontend React Developer As a Frontend React Developer, you will build modern user interfaces that make enterprise AI easy to use and reliable. You will create Next.js applications that work with large amounts of data, real-time AI responses, and advanced business features. Your work will help thousands of users access important information quickly and confidently. What You Will Do Design and develop scalable Next.js SSR applications. Build interfaces for AI chat, semantic search, knowledge graphs, and AI builders. Create data visualizations using libraries such as React Flow and Highcharts. Develop multilingual, accessible, secure, and cross-browser compatible applications. Work with SWR for data fetching, caching, and real-time websocket updates. Build and maintain reusable UI components and a Storybook design system. Improve application performance, monitor Core Web Vitals, and write automated tests with Playwright. Use AI coding assistants to speed up development while keeping high code quality. Participate in code reviews, share knowledge, and support continuous learning within the team. Requirements At least 5 years of frontend development experience. More than 3 years of experience with React and JavaScript/TypeScript. Strong knowledge of Next.js, including SSR, App Router, and Server Components. Advanced TypeScript skills and experience with modern CSS solutions such as Tailwind CSS or CSS-in-JS. Experience building applications with complex state management, real-time collaboration, and high performance. Experience creating interfaces for AI features such as chat systems, streaming responses, or semantic search. Understanding of localization, accessibility, security standards, and writing maintainable code. Experience using AI coding tools such as OpenAI Codex or Claude. Upper-Intermediate (B2) or higher English communication skills. Nice to Have Experience with React Flow, Highcharts, or similar visualization libraries. Basic backend knowledge in Node.js or Python and experience discussing API design. Experience with vector search, RAG interfaces, or semantic search solutions. Familiarity with MCP, DSPy, or other AI frameworks. Experience with monorepo tools such as Lerna, Turborepo, or Nx. Knowledge of AWS services like S3, CloudFront, and Lambda. Experience with Playwright, Puppeteer, or Cypress. What We Offer B2B contract and company stock options. MacBook Pro for work. Modern technology stack and opportunities to contribute to open-source projects. Access to advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, v0, MCP Servers, and credits for testing new AI technologies. Our Values We believe our success comes from the way we work together: Quality – We aim for excellent work and high standards in everything we do. Momentum – We take initiative and keep projects moving forward. Accountability – We take responsibility and give honest, respectful feedback. Hard Work – We solve difficult problems together and stay committed to our goals. Learning – We are curious, improve every day, and learn from mistakes. Adaptability – We accept change and see challenges as opportunities. Teamwork – We communicate openly, support each other, and succeed as one team.

🏢 Summary: Remote software development role focused on building backend content migration services with Node.js and developing React frontend components for CMS platforms. The position involves data transformation, performance optimization, accessibility improvements, and integration with modern web technologies. Candidates should have strong JavaScript/TypeScript experience and expertise in Node.js, React, REST APIs, and Redis. 🗂️ Requirements: 4+ years of experience with JavaScript, 4+ years of experience with TypeScript, 3+ years of experience with Node.js, 3+ years of experience with React, Experience with website performance optimization, Experience with accessibility improvements, Knowledge of REST APIs, Experience with Redis, Basic knowledge of Docker, English level B2 or higher, Ability to understand existing codebases quickly, Ability to write clean and maintainable code, Understanding of software design patterns, Knowledge of development best practices 📃 Skills: JavaScript, TypeScript, Node.js, React, REST, Redis, Docker, NestJS, TRPC, Next.js, Xano, HTML, CSS, AWS, Azure, GCP, Directus, Strapi 🏢 Description: ✨ About Us We are a software services company from France. Our goal is to help businesses improve the way they work by creating smart and simple software. We use AI agents, low-code platforms, and SaaS tools to build fast and effective solutions. Our clients fully own the software, without technical debt or long-term dependence on us. We are both consultants and software developers. We do more than build what clients ask for. We take time to understand their business and find better ways to help them work. 🏠 Offices Our main office is in Paris, but our technical team works remotely. ⚡ Our Values Do our work to the highest standard. Deliver the best technical and business quality for our clients. Be kind, honest, respectful, and enjoy working together. Stay curious and keep learning new things. ✏️ Your Responsibilities Become an independent and trusted member of the team. Develop strong expertise in your work. Build and support backend services using Node.js for content migration. Create data transformation layers to move content from old CMS platforms to the Arc XP format. Find and fix data problems between source and target systems. Develop reusable React components based on Arc design guidelines. Improve frontend performance and keep the code clean and well organized. Make sure applications are accessible and work well on different devices. 🎯 Requirements At least 4 years of experience with JavaScript and TypeScript . At least 3 years of experience with Node.js . At least 3 years of experience with React . Experience improving website performance, accessibility, and web analytics. Good knowledge of REST APIs. Experience with Redis (caching, pub/sub, and queues). Basic knowledge of Docker and containers. English at B2 level or higher. Ability to understand existing code quickly. Ability to write clean, readable, and maintainable code. Good understanding of software design patterns and development best practices. 🧩 Nice to Have Experience with CMS platforms such as Directus or Strapi. Experience with analytics tools like Google Analytics, Adobe Analytics, Amplitude, or Piano. Knowledge of SEO best practices. Experience migrating data between CMS platforms or databases. Experience improving the performance of content-rich websites. Experience with cloud platforms such as AWS, Google Cloud, or Azure. Experience with custom React-based frameworks. 💻 Technologies We Use Backend: Xano (low-code backend platform), NestJS, Node.js, TypeScript, TRPC Frontend: Next.js and custom React applications. 🤝 Hiring Process A 1-hour interview with HR, including a technical pre-screening in English. Your answers will be recorded and shared with our technical team for review. A 1.5-hour technical interview. A 30-minute interview with the CTO.

🏢 Summary: Remote software engineering role focused on building backend services and React frontend components for CMS content migration projects using Node.js and TypeScript. The position involves data transformation, performance optimization, accessibility improvements, and integration with modern web technologies. 🗂️ Requirements: 4+ years of JavaScript experience, 4+ years of TypeScript experience, 3+ years of Node.js experience, 3+ years of React experience, REST API knowledge, Redis experience, Basic Docker knowledge, English B2 level or higher, Ability to understand existing codebases, Ability to write clean and maintainable code, Knowledge of software design patterns, Understanding of development best practices 📃 Skills: JavaScript, TypeScript, Node.js, React, REST, Redis, Docker, NestJS, TRPC, Next.js, Xano, Directus, Strapi, AWS, Azure, GoogleCloud, SEO 🏢 Description: About Us We are a software services company from France. Our goal is to help businesses improve the way they work by creating smart and simple software. We use AI agents, low-code platforms, and SaaS tools to build fast and effective solutions. Our clients fully own the software, without technical debt or long-term dependence on us. We are both consultants and software developers. We do more than build what clients ask for. We take time to understand their business and find better ways to help them work. Offices Our main office is in Paris, but our technical team works remotely. Our Values - Do our work to the highest standard. - Deliver the best technical and business quality for our clients. - Be kind, honest, respectful, and enjoy working together. - Stay curious and keep learning new things. Your Responsibilities - Become an independent and trusted member of the team. - Develop strong expertise in your work. - Build and support backend services using Node.js for content migration. - Create data transformation layers to move content from old CMS platforms to the Arc XP format. - Find and fix data problems between source and target systems. - Develop reusable React components based on Arc design guidelines. - Improve frontend performance and keep the code clean and well organized. - Make sure applications are accessible and work well on different devices. Requirements - At least 4 years of experience with JavaScript and TypeScript. - At least 3 years of experience with Node.js. - At least 3 years of experience with React. - Experience improving website performance, accessibility, and web analytics. - Good knowledge of REST APIs. - Experience with Redis (caching, pub/sub, and queues). - Basic knowledge of Docker and containers. - English at B2 level or higher. - Ability to understand existing code quickly. - Ability to write clean, readable, and maintainable code. - Good understanding of software design patterns and development best practices. Nice to Have - Experience with CMS platforms such as Directus or Strapi. - Experience with analytics tools like Google Analytics, Adobe Analytics, Amplitude, or Piano. - Knowledge of SEO best practices. - Experience migrating data between CMS platforms or databases. - Experience improving the performance of content-rich websites. - Experience with cloud platforms such as AWS, Google Cloud, or Azure. - Experience with custom React-based frameworks. Technologies We Use Backend: Xano (low-code backend platform), NestJS, Node.js, TypeScript, TRPC Frontend: Next.js and custom React applications. Hiring Process - A 1-hour interview with HR, including a technical pre-screening in English. - Your answers will be recorded and shared with our technical team for review. - A 1.5-hour technical interview. - A 30-minute interview with the CTO.

🏢 Summary: Frontend-leaning Fullstack Engineer role building high-scale SaaS systems with modern React/Next.js frontends and Node.js/NestJS backends, heavily leveraging AI tools and automation. You will design APIs, async systems, and event-driven architectures, integrate external services, and ship MVPs to production with ownership and speed. The role emphasizes AI-driven workflows, rapid experimentation, and scalable, production-ready systems. 🗂️ Requirements: 2.5+ years professional full-stack experience, Strong React.js and Next.js skills, Backend experience with Node.js (NestJS preferred), Experience integrating external APIs (auth, pagination, retries, rate limits), Hands-on experience with modern AI tools (OpenAI, Claude, Cursor), Strong SQL skills (PostgreSQL preferred), Experience with async processing, queues, background jobs, Understanding of reliable systems (error handling, retries, observability), Fluent English and Polish 📃 Skills: React, Next.js, Node.js, NestJS, SQL, PostgreSQL, REST, WebSockets, OpenAI, Claude, Cursor, LavinMQ, BullMQ, Kafka, AWS, GCP, Fly.io, DigitalOcean, BigQuery, ClickHouse, Golang, Elixir, Rust, gRPC, GitLabCI 🏢 Description: At Web Impact, we’re more than just an email marketing agency and digital solutions provider. We build cutting-edge, socially impactful products that redefine how businesses operate in the digital world. We’re looking for a frontend-leaning Fullstack Engineer who enjoys building complex systems, integrating external services, and leveraging AI tools to speed up development and automate workflows. If you’re excited about combining modern frontend development with AI-driven workflows and automation tools like Claude Code, Cursor, and LLM frameworks , this one is for you. What You’ll Do Develop and contribute to end-to-end features across SaaS products and internal tools, collaborating with senior engineers on architecture and implementation decisions. Build modern, high-performance frontends using Next.js and React.js Develop scalable backend services using Node.js / NestJS Design and integrate APIs (REST, WebSockets, external services) Build and maintain automation workflows and background jobs Work with async systems, queues, and event-driven architectures Integrate third-party services with real-world constraints (rate limits, retries, auth flows) Use AI tools to improve development speed, testing, and automation Collaborate directly with product, data, and leadership teams Build MVPs, proof-of-concepts, and new product ideas from scratch Rapidly validate business ideas through experimentation and iteration Help evolve successful prototypes into production-ready systems AI & Automation This role includes working with modern AI tooling and automation systems, with a strong focus on speed, ownership, and execution : Using tools like Claude Code, Cursor, and OpenAI SDK in daily development Building AI-driven workflows and integrations quickly and iteratively Automating repetitive processes (data handling, content, integrations) Applying LLMs in production with a pragmatic, results-first approach Taking ownership of problems - from idea to production Shipping fast, testing in real conditions, and iterating based on outcomes Being accountable for delivery - not just writing code, but making things work end-to-end Prioritizing execution over perfection - speed is key What We’re Looking For 2,5+ years of professional full-stack experience Strong frontend skills in React.js / Next.js Backend experience with Node.js (NestJS preferred) Experience integrating external APIs (auth, pagination, retries, rate limits) Hands-on experience with modern AI tools (OpenAI, Claude, Cursor, etc.) Good SQL skills (PostgreSQL preferred) Experience working with async processing, queues, and background jobs Understanding of building reliable systems (error handling, retries, observability) Strong communication skills and ability to work cross-functionally Fluent in English and Polish Nice to Have Experience with Rust (async, Tokio, Axum) Experience with Elixir (Phoenix LiveView, GenServer) Understanding of distributed systems and architectures Experience with multi-region deployments and geo-distributed infrastructure Experience building systems with high parallelism (a large number of workers processing jobs concurrently) Familiarity with distributed databases and data consistency trade-offs Experience with multi-tenancy architectures (tenant isolation, scaling strategies) Experience working with high-throughput event pipelines Our Tech Stack Frontend: Next.js, React.js Backend: Node.js, NestJS, Golang, Elixir, Rust Data: PostgreSQL, BigQuery, ClickHouse Infra: AWS, Fly.io , Google Cloud, DigitalOcean Queues & Workers: LavinMQ, BullMQ, Kafka CI/CD: GitLab CI AI/ML & Automation: Proprietary GenAI models, OpenAI, Claude, internal tooling Integrations: REST, gRPC, WebSockets, external APIs with rate limits Why Join Us? Work on high-scale SaaS systems processing hundreds of millions of events daily , with real-time pipelines and data-heavy workloads. Ownership from day one - influence architecture, technology choices, and product direction. Collaborate with world-class engineers, AI specialists, and PMs. Innovation-first culture - explore cutting-edge frameworks and architectures. Fast execution, minimal bureaucracy, no unnecessary meetings Opportunity to work with modern AI tooling in production Competitive senior-level compensation and career growth. Social impact - contribute to automation products that empower businesses and communities. Our Streamlined Hiring Process Initial call Technical deep dive with our team Decision

🏢 Summary: Frontend-leaning Fullstack Engineer role focused on building and owning end-to-end SaaS features using modern frontend frameworks, scalable backend services, and AI-driven automation tools. The position combines React/Next.js development with Node.js backend work, async systems, and production AI integrations. Strong emphasis on speed, ownership, and delivering reliable, high-scale systems. 🗂️ Requirements: 3+ years professional full-stack development experience, Strong proficiency in React.js and Next.js, Solid backend experience with Node.js (NestJS preferred), Experience integrating external APIs (authentication, pagination, retries, rate limits), Experience with asynchronous processing, queues, and background jobs, Hands-on experience with AI tools (OpenAI, Claude, Cursor), Strong SQL skills (PostgreSQL preferred), Experience building reliable systems (error handling, retries, observability), Fluent English and Polish 📃 Skills: React, Next.js, Node.js, NestJS, JavaScript, TypeScript, PostgreSQL, SQL, REST, WebSockets, gRPC, Kafka, BullMQ, LavinMQ, AWS, GCP, DigitalOcean, Fly.io, GitLab, OpenAI, Claude, Cursor, Golang, Elixir, Rust, BigQuery, ClickHouse 🏢 Description: At Web Impact, we’re more than just an email marketing agency and digital solutions provider. We build cutting-edge, socially impactful products that redefine how businesses operate in the digital world. We’re looking for a frontend-leaning Fullstack Engineer who enjoys building complex systems, integrating external services, and leveraging AI tools to speed up development and automate workflows. If you’re excited about combining modern frontend development with AI-driven workflows and automation tools like Claude Code, Cursor, and LLM frameworks , this one is for you. What You’ll Do Own and deliver end-to-end features across SaaS products and internal tools Build modern, high-performance frontends using Next.js and React.js Develop scalable backend services using Node.js / NestJS Design and integrate APIs (REST, WebSockets, external services) Build and maintain automation workflows and background jobs Work with async systems, queues, and event-driven architectures Integrate third-party services with real-world constraints (rate limits, retries, auth flows) Use AI tools to improve development speed, testing, and automation Collaborate directly with product, data, and leadership teams AI & Automation This role includes working with modern AI tooling and automation systems, with a strong focus on speed, ownership, and execution : Using tools like Claude Code, Cursor, and OpenAI SDK in daily development Building AI-driven workflows and integrations quickly and iteratively Automating repetitive processes (data handling, content, integrations) Applying LLMs in production with a pragmatic, results-first approach Taking full ownership of problems - from idea to production Shipping fast, testing in real conditions, and iterating based on outcomes Being accountable for delivery - not just writing code, but making things work end-to-end Prioritizing execution over perfection - speed is key What We’re Looking For 3+ years of professional full-stack experience Strong frontend skills in React.js / Next.js Solid backend experience with Node.js (NestJS preferred) Experience integrating external APIs (auth, pagination, retries, rate limits) Experience working with async processing, queues, and background jobs Hands-on experience with modern AI tools (OpenAI, Claude, Cursor, etc.) Good SQL skills (PostgreSQL preferred) Understanding of building reliable systems (error handling, retries, observability) Strong communication skills and ability to work cross-functionally Fluent in English and Polish Nice to Have Experience with Rust (async, Tokio, Axum) Experience with Elixir (Phoenix LiveView, GenServer) Understanding of distributed systems and architectures Experience with multi-region deployments and geo-distributed infrastructure Experience building systems with high parallelism (a large number of workers processing jobs concurrently) Familiarity with distributed databases and data consistency trade-offs Experience with multi-tenancy architectures (tenant isolation, scaling strategies) Experience working with high-throughput event pipelines Our Tech Stack Frontend: Next.js, React.js Backend: Node.js, NestJS, Golang, Elixir, Rust Data: PostgreSQL, BigQuery, ClickHouse Infra: AWS, Fly.io , Google Cloud, DigitalOcean Queues & Workers: LavinMQ, BullMQ, Kafka CI/CD: GitLab CI AI/ML & Automation: Proprietary GenAI models, OpenAI, Claude, internal tooling Integrations: REST, gRPC, WebSockets, external APIs with rate limits Why Join Us? Work on high-scale SaaS systems processing hundreds of millions of events daily , with real-time pipelines and data-heavy workloads. Ownership from day one - influence architecture, technology choices, and product direction. Collaborate with world-class engineers, AI specialists, and PMs. Innovation-first culture - explore cutting-edge frameworks and architectures. Fast execution, minimal bureaucracy, no unnecessary meetings Opportunity to work with modern AI tooling in production Competitive senior-level compensation and career growth. Social impact - contribute to automation products that empower businesses and communities. Our Streamlined Hiring Process Initial call Technical deep dive with our team Decision

🏢 Summary: Senior Full Stack Team Lead role focused on building and scaling web applications using React and Node.js while leading a development team. The position combines hands-on front-end and back-end development with architecture design, API development, and deployment in cloud environments. You will drive technical decisions, ensure code quality, and oversee delivery of scalable, production-ready systems. 🗂️ Requirements: 7+ years full-stack development experience with React and Node.js, 2+ years experience in leadership or senior technical role, Strong experience with React.js, Redux, React Hooks, Strong knowledge of HTML5, CSS3, modern JavaScript, Proficiency in Node.js and Express.js, Experience building REST APIs, Experience with PostgreSQL or MySQL, Experience with authentication methods (OAuth, JWT, sessions), Experience with CI/CD and Docker, Experience working with production systems, Experience with Git, Understanding of Agile/Scrum methodologies 📃 Skills: React, Redux, JavaScript, HTML5, CSS3, Node.js, Express, REST, GraphQL, PostgreSQL, MySQL, OAuth, JWT, Docker, Kubernetes, AWS, Azure, GCP, Git, CI/CD, Webpack, Babel, Vite, MongoDB 🏢 Description: Overview We are a leading company in AI-based enterprise operations. We provide digital solutions and consulting services that help businesses grow and improve. We use modern technology to make processes simpler, increase efficiency, and create new ways to earn money, especially in private capital markets. Our ecosystem includes three main parts. First, PaaS (Platform as a Service) with the Orion Platform, which helps improve workflows, show useful insights, and support value growth across portfolios. Second, SaaS (Software as a Service), a cloud platform that offers strong performance and smart tools at scale. Third, our Solutions and Consulting Suite, which includes flexible technology solutions to manage, grow, and improve company performance. With more than 10 years of experience, we support fast-growing companies and private equity platforms, turning technology into a real business advantage. Responsibilities and Duties We are looking for an experienced Full Stack Team Lead with strong skills in React and Node.js. The right person has over 7 years of experience building high-quality web applications and has experience leading a team. You will guide developers, work on both front-end and back-end, take part in all stages of development, and support junior team members. Key Responsibilities Team Leadership & Mentorship: Lead and support a team of developers. Help them grow, review code, and give technical advice. Front-End Development: Build and maintain user interfaces using React.js, Redux, and modern JavaScript. Back-End Development: Create strong and scalable server applications and APIs using Node.js and Express. Integration: Work with database engineers to design databases and manage data using MongoDB or SQL. Application Architecture: Design scalable systems and microservices that meet business needs. Testing & Debugging: Write tests, fix issues, and improve performance. Support good testing practices. Deployment: Manage releases using CI/CD tools and Docker. Collaboration: Work with designers, product managers, and developers to create useful solutions. Communicate with both technical and non-technical teams. Maintenance: Monitor systems, fix problems, and improve applications. Documentation: Write and maintain technical documents for systems and APIs. Requirements Front-End: Strong experience with React.js, Redux, React Hooks, and component-based design Good knowledge of HTML5, CSS3, and modern JavaScript Familiar with tools like Webpack, Babel, or Vite Back-End: Strong skills in Node.js and Express.js Experience building and using APIs (GraphQL is a plus, REST is required) Knowledge of authentication methods like OAuth, JWT, and sessions Database: Experience with PostgreSQL or MySQL Additional Skills: Experience with Docker and Kubernetes is a plus Knowledge of cloud platforms like AWS, Azure, or GCP Experience with Git Understanding of Agile/Scrum methods Qualifications At least 7 years of experience in full-stack development with React and Node.js At least 2 years in a leadership or senior role Experience working with live production systems Bachelor’s degree in Computer Science or similar (preferred) Soft Skills Strong problem-solving and analytical thinking Good communication and teamwork skills Ability to work independently and manage tasks well Willingness to learn new technologies and improve continuously Why Join Us? We look for people who solve problems creatively, learn quickly, and enjoy working in an open and diverse team. We work hard, but we also like to enjoy what we do and aim for high results.

🏢 Summary: Fullstack Engineer role focused on building and integrating AI-powered features using LLMs within modern web applications. The position involves designing scalable APIs, AI workflows, and hybrid solutions combining AI with business logic across frontend and backend systems. You will collaborate cross-functionally to deliver production-ready AI solutions in a cloud environment. 🗂️ Requirements: 5+ years TypeScript and Node.js experience, 2+ years React or Next.js experience, Experience with cloud platforms (preferably GCP), Experience with PostgreSQL, Experience building AI-powered applications using LLMs and APIs, Strong prompt engineering skills, Experience designing AI workflows and orchestration, Understanding of AI limitations and best practices 📃 Skills: TypeScript, Node.js, React, Next.js, GCP, PostgreSQL, LLMs, APIs, Prompting, LangChain, RAG, Embeddings, VectorDB 🏢 Description: Fullstack Engineer - Node/React/Typescript + AI Solutions We are looking for an experienced Fullstack Engineer to build AI-powered solutions and shape how AI is used across modern systems. What you’ll do: Develop AI-driven features using LLMs Integrate AI APIs into backend and frontend applications Design scalable APIs and AI workflows (prompting, orchestration, response handling) Build hybrid solutions combining AI and business logic Collaborate with Data Engineers and other teams Requirements: 5+ years with TypeScript & Node.js (APIs, integrations) 2+ years with React (or Next.js) Experience with cloud (preferably GCP) and PostgreSQL Experience building AI-powered applications (LLMs, APIs) Strong prompt engineering & AI workflow design skills Understanding of AI limitations and best practices Nice to have: RAG, embeddings, vector databases LLM frameworks (e.g. LangChain)

🏢 Summary: Part-time remote engineering role focused on building and shipping AI-driven workflows for a fast-moving D2C e-commerce product. The position involves owning end-to-end development across the stack, delivering production-ready features, and integrating AI tools into real business processes. Work is async-friendly with partial overlap required with an Asia-based team. 🗂️ Requirements: 5+ years of development experience, Strong JavaScript proficiency, Strong Python proficiency, Production experience with React, Production experience with Node.js, Proven hands-on use of AI coding tools in real projects, Ability to ship production-ready code across the stack, Availability for 20–25 hours per week, Availability for 1–2 morning hours overlap with Asia-based team, Professional working proficiency in English 📃 Skills: JavaScript, Python, React, Node.js, AI, Claude, Codex, Shopify, Playwright, Vitest, API 🏢 Description: 5+ dev engineering team building a D2C e-commerce business out of Hong Kong. We ship fast, with AI inside the workflow. What you'll do Build AI workflows that move real work forward. Own scoping and execution, not just tickets. Curiosity and a maker-do'er mindset are essential. Ship production code across our stack. Skills JavaScript Python Production experience with React and Node.js Demonstrated proficiency with AI coding tools (Claude Code, Codex, or equivalent) — not "I've tried it," but "here's what I built" Nice to have Shopify (apps, Storefront API) E-commerce or D2C background Testing discipline (Playwright, Vitest, or similar) Logistics B2B contract, part-time (~20-25 hrs /week) Remote-first, anywhere in Poland Async-friendly but requires work for at least 1-2 hrs in mornings (AM) with Hong Kong/Asia-hours team. ENGLISH working language. How to apply Send your CV plus ONE paragraph: what's the most interesting AI workflow you've built and what it shipped? NO COVER LETTERS.