Senior MERN Developer (React.js + Node.js) - poste à distance

L'entreprise Proxify AB recrute : Senior MERN Developer (React.js + Node.js). C'est un poste senior : l'entreprise attend que vous tranchiez vous-même. Le poste relève de la catégorie IT et développement et se fait entièrement à distance. Aucune restriction n'est posée sur le lieu de résidence du candidat, vous pouvez donc postuler de partout.

Les principaux outils cités dans l'annonce sont les suivants : React, Node.js, TypeScript, AWS, Docker. Votre CV doit montrer des exemples concrets de ces compétences.

L'entreprise n'a publié aucun chiffre, cela se règle en entretien. L'annonce indique le fuseau horaire CET : les horaires sont donc à accorder avec les vôtres.

Cette offre a passé un contrôle automatique : les annonces qui exigent un permis de travail étranger, un parrainage de visa, une nationalité précise ou une résidence dans un pays nommé n'entrent pas dans la liste.

Headquarters: Sweden

URL: http://career.proxify.io

The Role:

We are looking for a Senior MERN Stack Developer with heavy specialization in React.js and Node.js on behalf of one of our high-growth clients to architect, scale, and maintain high-throughput web applications. In this role, you will take operational ownership of both front-end user interfaces and back-end microservices, delivering seamless, secure, and responsive digital products. You will bridge user-facing features with complex database architectures and cloud infrastructure. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products

 

What we are looking for:

* 5+ years of professional software engineering experience designing, building, and deploying end-to-end applications using MongoDB, Express.js, React.js, and Node.js.

* Deep proficiency in modern JavaScript (ES6+), TypeScript, asynchronous programming, event loops, and memory management across client and server environments.

* Deep mastery of React internals, custom hooks, component design patterns, state management (Redux Toolkit, Zustand, or React Query), SSR/SSG frameworks (Next.js is a strong plus), and performance optimization (virtualization, code splitting, Web Vitals).

* Proven experience architecting scalable RESTful APIs, WebSockets, and/or GraphQL services. Proficiency with middleware design, authentication protocols (JWT, OAuth2, Passport.js), and event-driven architectures.

* Advanced knowledge of MongoDB schema design, aggregation pipelines, index strategy, performance tuning, and ORMs/ODMs like Mongoose or Prisma.

* Strong commitment to test-driven development using frameworks like Jest, React Testing Library, and Cypress, alongside hands-on experience with Docker, CI/CD pipelines (GitHub Actions), and AWS cloud services.

* Time zone: CET (+/- 3 hours). We are unable to consider applications from candidates in other time zones.

 

Nice-to-have:

* Experience with Next.js or Remix for production-grade full-stack React frameworks.

* Familiarity with relational databases (PostgreSQL, MySQL) alongside MongoDB.

* Experience with vector databases or AI model integration into Node.js backend services.

* Exposure to micro-frontends or monorepo setups (Turborepo, Nx).

 

Responsibilities:

* Design, develop, and deploy scalable full-stack features from initial database schema creation down to polished, pixel-perfect React interfaces.

* Build secure, high-concurrency microservices and web services, managing integrations with third-party APIs, webhooks, and real-time communication channels.

* Audit, profile, and optimize application throughput-reducing bundle sizes and rendering overhead on the front end while optimizing database queries and caching layers (Redis) on the back end.

* Lead architectural discussions, write modular and well-documented TypeScript code, enforce strict testing protocols, and conduct thorough peer code reviews.

* Collaborate with cloud and DevOps engineers to containerize applications, set up automated deployment pipelines, and maintain system monitoring tools.

 

What we offer:

 

Get paid, not played

No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.

 

Predictable project hours

Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.

 

Flex days, so you can recharge

Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.

 

Career-accelerating positions at cutting-edge companies

Discover exclusive long-term remote positions at the world's most exciting companies.

 

Hand-picked opportunities, just for you

Skip the typical recruitment roadblocks and biases with personally matched positions.

 

One seamless process, multiple opportunities

A one-time contracting process for endless opportunities, with no extra assessments.

 

Compensation

Enjoy the same pay, every month with positions landed through Proxify.

To apply: https://weworkremotely.com/remote-jobs/proxify-ab-senior-mern-developer-react-js-node-js