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[Remote] Backend Developer (Volunteer \- Unpaid)

Remote, USA Full-time Posted 2026-06-22

Note: The job is a remote job and is open to candidates in USA. SAN R&D Business Solutions is looking for a skilled Backend Developer for a volunteer position. The role involves designing, developing, and maintaining server-side applications and APIs while collaborating with cross-functional teams to deliver high-quality software solutions.

Responsibilities

  • Design, develop, and maintain server-side applications and APIs
  • Work with relational and non-relational databases to ensure data integrity and performance
  • Optimize backend systems for scalability, performance, and security
  • Integrate front-end elements with server-side logic
  • Collaborate with product managers, frontend developers, and QA teams to deliver high-quality software
  • Write clean, reusable, and well-documented code
  • Troubleshoot, debug, and resolve backend issues
  • Participate in code reviews and follow best practices for development
  • Implement and maintain CI/CD pipelines for backend services

Skills

  • 3+ years of backend development experience
  • Strong programming skills in one or more languages (Java, Python, Node.js, Go, or similar)
  • Experience with RESTful APIs and/or GraphQL
  • Solid understanding of database systems (MySQL, PostgreSQL, MongoDB, etc.)
  • Knowledge of version control systems (Git, GitHub, GitLab)
  • Familiarity with containerization and orchestration (Docker, Kubernetes)
  • Understanding of cloud platforms (AWS, Azure, or GCP)
  • Ability to work in an Agile/Scrum environment
  • Building and consuming REST APIs
  • Understanding of CRUD operations with PostgreSQL
  • Basic knowledge of deployment (Heroku, AWS EC2)
  • Advanced API design (GraphQL, WebSocket APIs)
  • Basic understanding of authentication & authorization (JWT, OAuth)
  • Microservices architecture and containerization (Docker, Kubernetes basics)
  • Knowledge of caching strategies (Redis, Memcached)
  • Familiarity with CI/CD pipelines and automated testing for backend (Jest, Mocha, Supertest)

Benefits

  • Opportunity to work alongside senior leaders in a cross-functional, fast-paced setting.
  • Potential transition into a paid role or equity opportunity based on performance and company growth.
  • Certificate of recognition and professional references.
  • Freedom to experiment and contribute ideas to shape the company’s future.

Company Overview

  • Empowering Ideas, Delivering Excellence!! SAN R&D a next-generation R&D, IT Services and Technology solution provider company that helps enterprises reimagine their business and navigate their digital transformation. It was founded in 2024, and is headquartered in Fremont, California, US, with a workforce of 11-50 employees. Its website is https://www.sanrnd.com.
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