Backend Developer
Posted 25 Aug 2025
Advertised as “Backend Developer (Node.js)”
BranchFactor Summary
The original posting with the fluff stripped out
- Expected experience
- 5+ yrs
- Management level
- Individual contributor
- Employment
- Remote
- Contract
- Full-time
No salary listed for this role.
Join Zeely AI as a Senior Backend Developer and help build one of the largest AI products for businesses. We're looking for a strong backend engineer who wants to work on high-load services, influence architectural decisions, and build systems that scale alongside a rapidly growing business.
Over the past six months, our backend team has grown to 14 engineers, and we're continuing to expand. Today, Zeely is the #1 AI product in its niche in the U.S. market, and our ambitious goal is to become a global company by 2028.
You'll be joining a strong engineering environment, working alongside former Tech Leads, Engineering Managers, and Senior Engineers who foster a high engineering standard, support each other's growth, and tackle complex technical challenges together.
Zeely AI is the agentic AI platform for creating, launching, and scaling paid ads.
Want to see what we're building? Check out examples of our AI-generated videos on our website and across our Instagram, X (Twitter), and LinkedIn. We highly recommend taking a look before applying—it's the best way to experience the product you'll be working on.
Your key responsibilities:
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Developing and maintaining the back-end of web applications
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Designing and building REST APIs
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Working with PostgreSQL and Redis databases
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Integrating with third-party APIs
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Building and deploying applications on AWS (EC2, S3, CloudFront)
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Writing unit and integration tests
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Optimizing application performance
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Debugging and troubleshooting issues
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Writing technical documentation
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Conducting code reviews
What we’re looking for:
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5+ years of commercial experience with Node.js applications
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1+ years of experience with microservices architecture
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2+ years of hands-on work with Redis and PostgreSQL/MySQL (data modeling, indexing, caching, ORM such as Prisma/TypeORM/Drizzle ORM)
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Experience with AWS
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2+ years of experience with message brokers
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1+ years of experience with Docker
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Understanding of scalable and reliable system design principles