Senior Frontend Developer

🏢 Summary: Opportunity for a Senior Front-End Developer to modernize and scale an existing web interface using React and Next.js. The role focuses on building high-quality, responsive UI components, integrating with backend services, and driving front-end architecture and best practices. You will collaborate with backend and data teams while ensuring performance, scalability, and code quality. 🗂️ Requirements: Minimum 5 years of hands-on experience with React and Next.js, Strong proficiency in JavaScript and TypeScript, Strong knowledge of HTML and CSS, Experience with RESTful APIs integration, Understanding of modern front-end architecture and design patterns, Experience with front-end testing frameworks, Experience with build tools, Ability to troubleshoot and resolve UI and performance issues 📃 Skills: React, Next.js, JavaScript, TypeScript, HTML, CSS, REST, gRPC-Web, CI/CD, Testing 🏢 Description: Senior Front-End Developer (React / Next.js) We are looking for a Front-End Developer to join a technology-focused team working on modern web applications. This role will play a key part in transforming an existing user interface into a modern, scalable front-end built with React and Next.js. You will be responsible for delivering responsive, high-quality user interfaces and contributing to the long-term evolution of the UI platform. The position involves close collaboration with backend and data teams, as well as ownership of front-end standards and best practices within the team. Responsibilities Redesign and modernize an existing web interface using React and Next.js Build reusable, maintainable UI components with TypeScript Act as a front-end subject matter expert, supporting ongoing improvements to usability and performance Integrate front-end applications with backend services via REST APIs (gRPC-Web knowledge is a plus) Identify, troubleshoot, and resolve UI and performance issues Contribute to code reviews, technical discussions, and CI/CD processes Ensure high code quality through testing, documentation, and adherence to best practices Required Skills & Experience Min. 5 years of hands-on experience with React and Next.js Strong proficiency in JavaScript/TypeScript, HTML, and CSS Solid understanding of modern front-end architecture and development patterns Experience working with RESTful APIs Familiarity with front-end testing frameworks and build tools is an advantage Experience in finances/banking - nice to have

🏢 Summary: Senior React Developer role focused on building a modular, component-based UI platform for a core financial engine within a fully remote model. The position involves developing new features, integrations, and contributing to architectural decisions in an agile, fast-paced environment. The role requires strong ownership and collaboration within a small frontend team. 🗂️ Requirements: 5+ years of professional frontend development experience, Strong experience with React, Strong understanding of REST APIs, Strong knowledge of CSS, Experience with component-based UI design, Ability to manage complex tasks independently, Communicative Polish and English, Legal right to work in the European Union 📃 Skills: React, JavaScript, REST, CSS, Kubernetes, Grafana, Prometheus, Jira, Confluence 🏢 Description: Unleash the Power of Innovation - Build Next-Generation Financial Platforms! 100% remote work model As a Senior React Developer , you will be working for our client, a leading player in the financial industry, dedicated to creating cutting-edge, flexible, and scalable digital solutions. Join a team responsible for developing a core financial engine platform, delivering impactful UI components, and shaping the future of financial technology within an agile environment. Your main responsibilities: Develop and enhance a modular, component-based UI platform from scratch using React Collaborate closely with a small, autonomous frontend team to ensure seamless integration with the core financial engine Take ownership of tasks in a fast-paced environment, managing your workload proactively without direct oversight Implement new features and integrations, possibly connecting with other frontend systems, ensuring high performance and usability Contribute to the platform’s architecture and design decisions, ensuring adaptability and scalability You're ideal for this role if you have: 5+ years of professional experience in frontend development, particularly with React Strong understanding of REST APIs, CSS, and component-based UI design Experience working in autonomous teams, managing complex development tasks from start to finish Familiarity with Kubernetes, Grafana, Prometheus, Jira, and Confluence is a plus A proactive attitude with excellent problem-solving skills Language Required for the role: Communicative Polish and English levels Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Frontend Developer role focused on building modern web applications using React, TypeScript, and Next.js (App Router) in a clean, up-to-date monorepo environment. The position involves developing complex UI components, maintaining a shared design system, and implementing comprehensive unit and E2E testing. The role emphasizes high code quality, collaboration, and use of modern tools including AI-assisted development. 🗂️ Requirements: Strong JavaScript skills, Strong TypeScript skills, Commercial or strong practical experience with React, Good knowledge of HTML, Good knowledge of CSS, Experience with responsive design, Experience with REST APIs, Experience with GraphQL APIs, Experience writing unit tests, Experience with React Testing Library or similar, Hands-on experience with E2E testing, Experience with Playwright or similar E2E tool, Proficiency with Git, Ability to work independently, Communicative English 📃 Skills: JavaScript, TypeScript, React, Next.js, HTML, CSS, Tailwind, Radix, shadcn, Storybook, Playwright, Vitest, Jest, ReactTestingLibrary, REST, GraphQL, Git, Turborepo, Yarn, TanStack, react-hook-form, Auth0, i18n, Claude, Cursor 🏢 Description: About us We build modern, high-quality web applications for the mobility sector using a clean TypeScript/React/Next.js monorepo. We keep our stack up to date and work with the latest stable versions of Next.js (App Router), React 19+, Tailwind, Playwright, GraphQL, and Storybook for component development and documentation. We also actively integrate AI tools into our daily workflow. You won’t have to deal with legacy code, outdated patterns, or old dependencies. Our team (8-10 people) maintains high standards through regular code reviews, 1:1 mentoring, and continuous refactoring and experimentation with new tools and practices. The frontend team is based in Poland, while the rest of the product team is in Sweden -so you’ll work closely with a local FE team while collaborating across the wider organisation. We’re looking for a proactive frontend developer with hands-on experience in React, who is comfortable writing tests (including E2E), and can work independently in a modern stack -while continuing to grow in a supportive, high-standard environment. 👉 You don’t need to tick every single box -if most of this sounds like you, we’d love to talk. Day-to-day responsibilities • Build new features and complex UI components using React / TypeScript / Next.js (App Router) • Develop and improve components within our shared design system (Tailwind + Radix / shadcn/ui), with documentation in Storybook • Write and maintain E2E tests in Playwright (an important part of the role) • Write unit and integration tests (Vitest + React Testing Library) • Work with REST / GraphQL APIs, debug issues across the stack, and participate in code reviews • Use AI coding assistants (Claude, Cursor, etc.) to speed up development and improve code quality Must-have requirements • Solid JavaScript / TypeScript skills -you write clean, type-safe code • Practical experience with React (commercial or strong personal projects) • Good understanding of HTML/CSS and responsive design • Experience working with REST and/or GraphQL APIs • Experience writing unit tests (e.g. Vitest / Jest + React Testing Library) • Some hands-on experience with E2E testing (Playwright or similar tools like Cypress) • Comfortable working with Git (branches, PRs, rebasing, code reviews) • Communicative English (written and spoken) • Ability to deliver working features independently Nice-to-have (not required, but a plus) • Experience with Next.js App Router in real-world projects • Monorepo experience (Turborepo, Yarn workspaces, etc.) • Familiarity with TanStack Router, react-hook-form, Auth0, or i18n solutions • Experience working with design systems or component libraries (Radix, shadcn/ui, Headless UI) • Storybook experience • Exposure to AI-assisted coding in real workflows What we offer • Work with a modern, up-to-date stack -no legacy code, no outdated libraries • 1:1 mentoring and thorough code reviews from experienced developers • A modern environment with room to experiment (including strong AI usage) • Real ownership over features and product areas • No crunch, flexible working hours, fully remote setup • Clear growth path -from feature/E2E contributor to broader frontend ownership

🏢 Summary: Senior FullStack Developer role in a fast-growing SaaS environment, responsible for designing and delivering scalable, high-performance web applications using NestJS and NextJS. The position involves leading architectural decisions, ensuring code quality, optimizing system performance, and mentoring engineers across cross-functional squads. You will drive backend and frontend development, CI/CD reliability, and production stability in a modern, zero-legacy stack. 🗂️ Requirements: 5+ years of fullstack development experience, Strong experience with NestJS, Node.js, NextJS, and TypeScript, Strong knowledge of PostgreSQL, data modeling, and optimization, Experience building and consuming REST APIs with JWT authentication, Ability to lead architecture decisions and enforce code quality, Experience with CI/CD pipelines and Docker, Frontend performance optimization experience (SSR, lazy loading, state management), Ability to collaborate in cross-functional teams (product, QA, design) 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, CI/CD, Docker, Kubernetes, ArgoCD, Storybook, React, Kafka, RabbitMQ, AWS, Terraform, Sentry, Datadog, Groundcover 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Senior FullStack Developer role focused on building and scaling high-performance web applications using NestJS and NextJS. The position involves leading architecture decisions, ensuring code quality, and optimizing performance across backend and frontend systems. You will drive scalable, secure solutions and maintain reliable CI/CD and production environments. 🗂️ Requirements: 5+ years of fullstack development experience, Strong experience with NestJS, Node.js, NextJS, TypeScript, Strong knowledge of PostgreSQL and data modeling, Experience building and consuming REST APIs, Experience implementing JWT-based authentication, Ability to design scalable and secure architectures, Experience with CI/CD pipelines and Docker, Experience optimizing frontend performance (SSR, lazy loading, state management), Ability to enforce code quality and conduct code reviews 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, Docker, CI/CD, Kubernetes, ArgoCD, Kafka, RabbitMQ, AWS, SNS, SQS, Terraform, Sentry, Datadog, Groundcover, Storybook, React 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Senior FullStack Developer role focused on building and scaling high-performance SaaS web applications using NestJS and NextJS. The position involves leading architecture decisions, ensuring code quality, and optimizing system performance across backend and frontend. The role also drives CI/CD reliability, observability standards, and cross-functional technical alignment. 🗂️ Requirements: 5+ years fullstack development experience, Strong experience with NestJS, Node.js, NextJS, TypeScript, Strong knowledge of PostgreSQL and data modeling, Experience building and consuming REST APIs, Implementation of JWT-based authentication, Experience with CI/CD pipelines, Experience with Docker and environment management, Frontend performance optimization (SSR, lazy loading, state management), Ability to lead architecture decisions and enforce code quality 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, CI/CD, Docker, Kubernetes, ArgoCD, Kafka, RabbitMQ, AWS, Terraform, Sentry, Datadog, Groundcover, Storybook, React 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Frontend engineering role focused on building scalable, high-performance web applications using React and Next.js. The position involves developing modern user interfaces, collaborating with cross-functional teams, and contributing to shared component architecture and development practices. Suitable for mid-level to senior developers with strong web development experience. 🗂️ Requirements: 5+ years frontend/web development experience, Strong experience with React, Strong experience with TypeScript, Experience with Next.js or similar framework, Understanding of performance and scalability principles, Experience integrating APIs and backend services, Experience with Git version control, Experience with CI/CD pipelines 📃 Skills: React, Next.js, TypeScript, JavaScript, HTML, CSS, REST, Git, CICD, Jest, Playwright, Cypress, Cloud 🏢 Description: Web Frontend Engineer (React / Next.js) Do you want to help shape modern, scalable web applications used by thousands of businesses worldwide? Our client is looking for a skilled frontend developer with a strong focus on web technologies — especially React and Next.js — to help drive the development of high-quality, user-centric solutions. About the Role In this role, you will play a key part in building and evolving our clients web-based user interfaces. You’ll work closely with product managers, UX designers, and backend engineers to deliver performant, scalable, and intuitive solutions that create real value for customers. We are looking for developers across different seniority levels — both experienced profiles and developers with 5–10 years of experience who are eager to grow and take ownership. Key Responsibilities Develop and maintain modern web applications using React, Next.js, and TypeScript Build reusable components and scalable frontend architecture Collaborate closely with product and design teams to translate requirements into high-quality user experiences Ensure performance, accessibility, and responsiveness across applications Contribute to and evolve shared component libraries and design systems Participate in code reviews and contribute to improving development practices Work with CI/CD pipelines and modern development workflows Stay updated on frontend trends, tools, and best practices Key Requirements Solid experience with React and TypeScript in a web context Experience with Next.js or similar frameworks is highly preferred 5+ years of experience in frontend/web development (we are open to mid-level and senior profiles) Strong understanding of modern web development principles (performance, scalability, component architecture) Experience working with APIs and integrating backend services Familiarity with version control (Git) and CI/CD pipelines A collaborative mindset and strong communication skills Motivation to learn, improve, and contribute to a strong engineering culture Nice to Have Experience with design systems and component libraries Knowledge of testing frameworks (e.g., Jest, Playwright, Cypress) Experience with performance optimization and monitoring Exposure to cloud environments and modern deployment setups

🏢 Summary: Senior Frontend Developer role focused on building, maintaining, and optimizing scalable web applications using modern frontend technologies. The position involves designing web architecture, integrating APIs, and supporting CI/CD processes to deliver high-performance user experiences. The role requires strong experience in React-based ecosystems and modern DevOps practices. 🗂️ Requirements: Minimum 5 years of experience in modern frontend technologies, Strong experience with ReactJS and NextJS, Proficiency in HTML, CSS, TypeScript, and JavaScript, Experience designing scalable web architecture, Solid knowledge of REST APIs, Experience with NodeJS and package managers, Experience with CI/CD pipelines and GitHub workflows, Proficient in Git version control, Experience creating technical documentation (e.g., Confluence), English proficiency at B2 level or higher 📃 Skills: ReactJS, NextJS, HTML, CSS, TypeScript, JavaScript, REST, NodeJS, CI/CD, GitHub, Git, Confluence, Azure, GraphQL, HeadlessCMS 🏢 Description: We are seeking a highly skilled and motivated Senior Frontend Developer to join our team. The ideal candidate will have a strong background in front-end coding, troubleshooting, and optimizing web applications. You will play a key role in developing and maintaining high-quality, scalable, and performant web solutions using modern technologies. This position requires a proactive individual with excellent problem-solving skills and a passion for delivering exceptional user experiences. Must-Have Qualifications to be successful for the role: Technical Skills: Develop and maintain web applications using ReactJS / NextJS . Implement responsive designs using HTML, CSS, Typescript, and JavaScript . Create and maintain technical documentation using tools like Confluence. Design and implement scalable web architecture and artifacts. Solid knowledge of REST APIs . Experience with NodeJS and package managers. Utilize DevOps skills, including CI/CD pipelines , GitHub workflows , and actions . Manage version control using GIT effectively. Soft Skills: Strong problem-solving and troubleshooting abilities. Excellent communication and collaboration skills to work effectively in a team environment. Attention to detail and a proactive approach to identifying and resolving issues. Ability to adapt to new technologies and learn quickly. Experience: Minimum 5 years of experience in modern Frontend technologies. English proficiency should be at least B2 level. Nice-to-Have Qualifications: Experience with Azure or other cloud platforms. Experience with GraphQL. Experience with Headless CMS (Content Management System) . Optimize web performance, focusing on Core Web Vitals. Other Details: Work model: 2 days per week in the office and 3 days at home. We offer a flexible work schedule that includes 12 additional Compensation Days besides regular holidays. Note that specific work hours may vary between winter and summer schedules, and the candidate will be required to submit their CV in English.

🏢 Summary: Backend-heavy Fullstack Engineer role focused on building and scaling a cyber risk reporting platform used by US MSPs. The position centers on designing and owning Node/NestJS backend systems, including integrations, job queues, and data modeling, within a fast-paced product environment. You will work closely with a small, autonomous team shipping features every sprint using AI-assisted development tools. 🗂️ Requirements: Minimum 2 years commercial backend experience in Node.js or NestJS, Production experience designing schemas and writing database migrations, Hands-on experience building and debugging job queues, Experience integrating third-party APIs on the backend, Solid knowledge of TypeScript, Working experience with React, Practical experience with PostgreSQL, Practical experience with Redis, Experience using Docker, Use of AI development tools, Fluent English, Availability to work evening hours aligned with US (UTC-6) team 📃 Skills: Node.js, NestJS, TypeScript, React, PostgreSQL, Redis, Docker, BullMQ, TypeORM, Auth0, Swagger, Express, Fastify, ConnectWise, Autotask, Kaseya, Microsoft365, GoogleWorkspace 🏢 Description: We're The Digital Bunch, a cross-disciplinary digital consultancy with offices in Warsaw, Riyadh, Sydney, and London. We combine strategy, design, and technology to help companies grow. Software development is one of our core verticals, and we embed with product companies long-term as part of their engineering teams. This role is for our work on a cyber risk reporting platform. The product scans networks, endpoints, and cloud environments (Microsoft 365, Google Workspace), checks breach databases, and generates risk reports with an AI layer on top for analysis and recommendations. The reports are sold to MSPs in the US who use them to show clients where they stand on security. It's cyber tooling, nothing else. The platform has been live for 5+ years, was acquired last year by a larger company (100+ people), and is actively growing. New features ship every sprint. The codebase is mature but moves fast. You'd join a small team on our side: our CTO and one other developer. On the client side in Dallas there's a PM, QA, support, and two engineers, plus people from the parent company who rotate in when needed. Flat setup, a lot of independence. We write code with Cursor and Claude Code every day. Not as a gimmick, that's how we actually work. If you're already using AI tooling, good. If not, you'll pick it up in the first week. ⚠️ Read this first, this is a backend-heavy role Most of the interesting work lives on the server: job queues, third-party integrations, data modeling, async scans, report generation. The frontend matters, but it's not where you'll spend most of your time. If your experience is mostly React with some REST calls, this isn't the right role. We need someone who's actually built and owned Node/NestJS backends in production, schemas, queues, integrations, migrations, the whole thing. We're happy to consider someone with ~2 years of experience if those two years are genuinely backend-heavy. We're not happy to consider 6 years of frontend with a skills-list backend section. ⏰ Working hours, read this too The client team is in Dallas, Texas (UTC-6). You need to be available in the evenings: - Daily standups happen between 19:00–21:00 Polish time, 30–45 minutes - Monday planning runs at 23:00 Polish time - The rest of the day is yours. Most people work something like 12:00–20:00 or 14:00–21:00 - No weekends, no on-call If you can't do evenings, this isn't the right fit. Wanted to be upfront about that. 📌 The work You'll ship features across the full stack, weighted toward the backend: NestJS on the server, PostgreSQL and Redis underneath, React on the frontend. The backend integrates with 15+ external services (breach intelligence APIs, cloud provider APIs, PSA systems like ConnectWise), runs BullMQ job queues, and uses TypeORM and Auth0. There's always something new to wire up. About 10% of your time goes to triaging production issues reported by customers. That's engineering debugging, not answering support tickets. Small team means you have real input into what gets built and how. Nobody's handing you pixel-perfect Jira tickets. We ship behind feature flags, get it in front of users fast, and iterate. If you're the type who spends three weeks perfecting architecture before writing a line of code, this isn't your pace. First-day commits. Our CTO onboards you personally, but we expect you shipping from the start. 👉 What we're looking for - At least 2 years of commercial backend work in Node.js / NestJS (or a close equivalent, Express or Fastify with real production ownership). We'll ask about it. - You've designed schemas, written migrations, debugged queues, and integrated third-party APIs, not just consumed them from a frontend - Solid TypeScript and React. You don't need to be a CSS wizard, you need to be comfortable moving across the stack - Hands-on with PostgreSQL, Redis, Docker - You use AI tools for development (Cursor, Claude Code, Copilot, whatever works for you) - Fluent English, spoken and written. You're on daily video calls with Americans - Actually okay with working late Polish hours (see above) - Self-directed. Nobody assigns you tasks step by step 👍 Bonus points - Worked in cybersecurity, SOC/SIEM tooling, or compliance before - Know your way around BullMQ, TypeORM, Auth0, or Swagger codegen - Built integrations with PSA systems (ConnectWise, Autotask, Kaseya) or MSP-facing tooling - Worked with US-based teams or in product companies 🚫 Probably not for you if - Your CV lists React/Next/Tailwind projects and the backend section is a skills list with no project evidence - You've mostly consumed REST APIs, not built them - Your backend experience is a single side project or a bootcamp module - You want to spend most of your day on UI polish 🎉 What you get - 20,000–26,000 PLN net/month, B2B - Fully remote, or Warsaw office in central Warsaw (dogs welcome) - Long-term product work on a single platform, not project hopping - Latest hardware and tooling - Multisport card - Regular salary reviews - Referral bonuses 💃 Hiring process 1. Intro call with Alex (CTO). 15–30 min. We talk about the role, you ask questions, and we see if it makes sense for both sides. 2. Take-home task. Build a small full-stack app (React + NestJS). The NestJS side carries most of the weight. Capped at 2 hours. Use AI tools, we don't care how you get there, we care that it works and you understand it. 3. Live review. 60 min. You walk us through your code, we ask you to add a feature live (should take minutes with AI, not half an hour), then we talk architecture and how you think about systems. 4. Meet the client team. Short call with the Dallas side before we finalize.

🏢 Summary: Senior Fullstack Engineer role in a global investment firm focused on building and modernizing high-performance financial platforms. The position involves end-to-end development across backend and frontend, optimizing financial data systems, and contributing to cloud-based, distributed architectures. The role combines enterprise engineering with modern cloud and streaming technologies in a global, agile environment. 🗂️ Requirements: 7+ years of professional full-stack development experience, Hands-on experience with C# and .NET, Hands-on experience with Node.js, Hands-on experience with React, Strong knowledge of SQL Server and T-SQL, Experience designing scalable server-side applications, Experience optimizing high-throughput databases, Ability to participate in architecture and design reviews, Professional English proficiency 📃 Skills: C#, .NET, Node.js, ReactJS, AngularJS, SQL, T-SQL, SQLServer, Cloud, Containers, DataStreaming, AI, ML 🏢 Description: About the Role & Project We are recruiting for a leading global alternative investment firm (Hedge Fund) that is modernizing capital markets. We are not looking for a traditional, single-stack developer. We need a Senior Fullstack Engineer who comfortably bridges the gap between robust enterprise systems and cutting-edge cloud/AI solutions. You will join an agile tech team building high-performance platforms where your code directly impacts complex, global financial systems. Tech Stack Backend: C# / .NET, Node.js Frontend: ReactJS (with occasional legacy AngularJS maintenance) Data: SQL Server, T-SQL Architecture: Cloud, Containers, Data Streaming Key Responsibilities End-to-End Dev: Design and scale server-side apps (Node.js/.NET) and build responsive UIs (React). Data & Perf: Optimize high-throughput SQL Server stored procedures for financial data. Modernization: Leverage streaming and cloud technologies to build resilient, distributed platforms. Architecture: Take an active role in tech design reviews, architecture discussions, and mentoring. Requirements 7+ years of professional full-stack development experience. Hands-on mastery of C#/.NET, Node.js, React, and T-SQL. Engineering standards: Strong analytical skills, clean code mindset, and solid application design focus. Communication: Excellent English skills to collaborate smoothly with international teams. Bonus Points: Experience or interest in integrating AI/ML models into enterprise apps. Prior background in FinTech, banking, or trading environments . What We Offer Financial & Future: Private pension scheme, life & travel insurance, educational assistance reimbursement. Health & Wellness: Premium medical & dental package (with vision allowance) + MultiSport card. Culture & Perks: Pre-funded lunch card, Employee Assistance Program, volunteer opportunities, and active DEI affinity groups. If interested, please click apply! :)