Senior Node.js Backend Engineer

Valiant Technologies LLC; Menlo Park (CA); On-site; USD 160,000 - 230,000; Full time

Job summary

Valiant Technologies LLC in California is seeking a seasoned Node.js Developer to design, build, test, and maintain scalable server-side applications and APIs. You will collaborate with frontend teams, product managers, and designers to deliver reliable software.

The ideal candidate has 10+ years of backend experience, deep knowledge of Express.js/NestJS/Fastify, and a strong track record of secure, high-performance APIs.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• 10+ years of professional experience in backend development.
• Experience with frameworks such as Express.js, NestJS, or Fastify.
• Solid understanding of RESTful API design and backend architecture.
• Experience working with relational and/or NoSQL databases.
• Familiarity with Git and collaborative development workflows.
• Understanding of asynchronous programming, event-driven architecture, and performance optimization.
• Experience writing automated tests using tools such as Jest, Mocha, or similar.
• Knowledge of software development life cycle and agile methodologies.
• Strong problem-solving and communication skills.

Responsibilities

• Develop and maintain scalable backend applications using Node.js.
• Design, build, and integrate RESTful APIs and/or GraphQL services.
• Work with databases such as PostgreSQL, MySQL, MongoDB, or Redis.
• Implement authentication, authorization, and data security best practices.
• Integrate third-party APIs and external services.
• Collaborate with frontend developers to ensure seamless application integration.
• Write unit, integration, and end-to-end tests.
• Troubleshoot, debug, and resolve application issues.
• Optimize application performance, scalability, and reliability.
• Participate in code reviews and contribute to technical decisions.
• Maintain technical documentation and development standards.
• Work with DevOps teams to support CI/CD pipelines and application deployments.
• Stay current with emerging technologies and industry best practices.

Skills

Node.js

Express.js

NestJS

Fastify

RESTful API design

Relational & NoSQL DBs

Testing (Jest/Mocha)

Git & collaboration

Async programming

Agile methodologies

Education

Bachelor's degree in Computer Science

Tools

Docker

Kubernetes

AWS

PostgreSQL

MySQL

MongoDB

Redis

GraphQL

Job description

Valiant Technologies LLC in California is seeking a seasoned Node.js Developer to design, build, test, and maintain scalable server-side applications and APIs. You will collaborate with frontend teams, product managers, and designers to deliver reliable software.

The ideal candidate has 10+ years of backend experience, deep knowledge of Express.js/NestJS/Fastify, and a strong track record of secure, high-performance APIs.