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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Middle/Senior Fullstack Developer (Javascript) - **Company:** Quadcode - **Location:** France (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), Artificial Intelligence, VoIP, Software as a Service, Software Quality, Code Review, Continuous Integration, Relational Databases, Software Debugging, Software Design Patterns, Issue Tracking Systems, PostgreSQL, Node.Js, Scrum Methodology, Next.js, Systems Integration, TypeScript, WebSocket, ReactJS, Backend, Gitlab, Git, Vue.js, Event Driven Architecture, AngularJS, Kubernetes, Front End Software Development, React Redux, Asynchronous Programming, NestJS, Restful APIs, Software Version Control, Docker, Golang, Microservices - **Published:** June 19, 2026 - **Apply:** https://fr.indeed.com/viewjob?jk=a2e011de99ff51cf ## About the Role Do you have experience in VoIP?, * At least 2 years of experience in backend development (Node.js) * Experience in frontend development (React, Vue, Angular, JS, TypeScript) * Solid knowledge of Node.js (with Express, Nest.js, or Next.js) * Experience building and integrating RESTful APIs, working with WebSockets (e.g., socket.io), and using relational databases (especially PostgreSQL) * Understanding of asynchronous programming, event-driven architecture, and microservices * Familiarity with development best practices: testing, CI/CD, code quality, and version control (Git) * Knowledge of software design patterns and clean code principles * Fluency in Russian (C1+) and English (B1), * Experience in Forex or iGaming * Knowledge of Golang * Experience developing CRM systems, admin panels, and telephony ## Description We are Quadcode, a fintech company excelling in financial brokerage activities and delivering advanced financial products to our global clientele. Our flagship product, an internal trading platform, is offered as a Software-as-a-Service (SaaS) solution to other brokers. We are growing and looking for a Full-stack Developer (Node.js + React) to join our Customer Relations team, which is responsible for developing an internal CRM system used by our Sales and Support teams. We're building tools that help our teams communicate with clients through telephony, chats, an admin panel, and a clear ticket system. The team includes 2 full-stack developers, 2 manual QA engineers, and a team lead. We follow the Scrum framework with 2-week sprints, daily stand-ups at 11:00 AM (GMT+3), retrospectives, and grooming sessions. You'll have the opportunity to work with three large-scale product projects and seven microservices, including integrations built on AI and VoIP telephony (FreeSWITCH). Tech stack: Backend: Node.js, Nest.js, Express, Golang Frontend: React, Mobx, Redux DB: PostgreSQL CI/CD: gitlab, Docker, Kubernetes, * Collaborate with team members to design, develop, test, and maintain scalable backend and frontend services within a microservices architecture * Write clean, efficient, and maintainable code using Node.js, TypeScript, and React.js * Troubleshoot and debug issues across the stack, and upgrade existing systems to improve performance and reliability * Participate in code reviews and contribute to architectural and technical decisions. * Work closely with product managers, designers, and QA engineers to deliver high-quality software. ## Related Videos - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Getting under the skin: The Social Engineering techniques](https://www.wearedevelopers.com/videos/38-getting-under-the-skin-the-social-engineering-techniques) - [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)