Senior Backend Developer (Node.js / Nest.js)

ProxifyProxify·Remote(Time zone: CET (+/- 3 hours))
Software Development

WFA Digital Insight

As demand for skilled backend developers continues to rise, with a reported 25% increase in remote job postings in 2025, Proxify stands out for its commitment to connecting top talent with innovative companies. With a strong focus on Node.js and Nest.js, this role is ideal for experienced developers looking to work on complex projects. Before applying, candidates should be prepared to showcase their expertise in building RESTful APIs and GraphQL endpoints, as well as their ability to work collaboratively in a remote environment. With Proxify's impressive track record of success, this role offers a unique opportunity for developers to take their careers to the next level.

Job Description

About the Role

As a Senior Backend Developer at Proxify, you will play a crucial role in building modern and scalable web applications using Node.js and Nest.js. You will work closely with a team of talented developers and designers to create intuitive user experiences that meet the needs of Proxify's clients. With a focus on innovation and collaboration, this role offers the opportunity to work on complex and challenging projects that make a real difference.

The role entails designing and developing robust, scalable, and secure backend applications, as well as implementing RESTful APIs, GraphQL endpoints, and microservices architectures. You will be responsible for optimizing application performance, scalability, and maintainability, and ensuring that all code is of high quality and meets industry standards.

Proxify's mission is to connect top developers around the world with the opportunities they deserve, and as a Senior Backend Developer, you will be at the forefront of this effort. With a global network of supportive and talented developers, you will be part of a community that is passionate about delivering exceptional results and driving innovation.

What You Will Do

  • Design and develop robust, scalable, and secure backend applications using Node.js and Nest.js
  • Implement RESTful APIs, GraphQL endpoints, and microservices architectures
  • Optimize application performance, scalability, and maintainability
  • Integrate with databases (SQL/NoSQL) and external services via APIs
  • Ensure code quality, security, and compliance with industry standards
  • Collaborate with frontend developers and designers to create intuitive user experiences
  • Participate in code reviews and contribute to the improvement of the codebase
  • Troubleshoot and debug issues, and provide technical support to the team
  • Stay up-to-date with the latest developments in Node.js and Nest.js, and apply this knowledge to improve the team's skills and expertise

What We Are Looking For

  • 5+ years of experience with Node.js and 3+ years of experience with Nest.js
  • Strong expertise in Node.js and Nest.js frameworks
  • Proven experience building REST and/or GraphQL APIs
  • Strong knowledge of JavaScript (ES6+) and TypeScript
  • Solid experience with relational and/or NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB)
  • Familiarity with authentication/authorization mechanisms (JWT, OAuth2)
  • Experience with unit/integration testing (e.g., Jest, Mocha)
  • Proficiency with Git and version control workflows
  • Located in CET timezone (+/- 3 hours)

Nice to Have

  • Experience with cloud platforms (AWS, Azure, GCP)
  • Familiarity with CI/CD pipelines and DevOps practices
  • Understanding of event-driven architecture and message brokers (e.g., RabbitMQ, Kafka)
  • Experience with Docker and containerized applications
  • Knowledge of microservices and serverless architectures

Benefits and Perks

  • On-time monthly payments with flexible withdrawal options
  • Predictable project hours and a harmonious work-life balance with consistent 8-hour working days
  • Up to 24 flex days off per year without losing pay
  • Career-accelerating positions at cutting-edge companies
  • Exclusive long-term remote positions with personally matched opportunities
  • One seamless process for multiple opportunities, with no extra assessments
  • The same pay every month, with no unreliable clients or unexpected changes

How to Stand Out

  • Make sure to highlight your experience with Node.js and Nest.js, and provide specific examples of projects you have worked on.
  • Prepare to talk about your approach to building RESTful APIs and GraphQL endpoints, and be ready to explain your design decisions.
  • Emphasize your ability to work collaboratively in a remote environment, and provide examples of how you have successfully communicated with team members in the past.
  • Be prepared to discuss your experience with unit testing and integration testing, and explain how you ensure code quality and security.
  • Research Proxify's mission and values, and be ready to explain how your skills and experience align with the company's goals.
  • Practice your problem-solving skills, and be prepared to whiteboard solutions to common backend development challenges.

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