Senior Backend Developer (Node.js)

Ukraine, Remote. Posted 14 months ago

The role

You will develop and maintain the back-end of web applications. You will work on high-load services and influence architectural decisions for an agentic AI platform.

What you will do

Developing and maintaining the back-end of web applications
Designing and building REST APIs
Working with PostgreSQL and Redis databases
Integrating with third-party APIs
Building and deploying applications on AWS (EC2, S3, CloudFront)
Writing unit and integration tests
Optimizing application performance
Debugging and troubleshooting issues
Writing technical documentation
Conducting code reviews

Required qualifications

5+ years of commercial experience with Node.js applications
1+ years of experience with microservices architecture
2+ years of hands-on work with Redis and PostgreSQL/MySQL (data modeling, indexing, caching, ORM such as Prisma/TypeORM/Drizzle ORM)
Experience with AWS
2+ years of experience with message brokers
1+ years of experience with Docker
Understanding of scalable and reliable system design principles
Experience with version control systems (Git)

Nice to have

1+ years of experience with the NestJS framework
Experience with payment systems
Valid AWS certification
Commercial experience with high-load systems
Experience building back-end for iOS, Android, and web applications
Experience with Terraform/Pulumi
Commercial experience with AI APIs
English level: Upper-Intermediate

Benefits

Work with cutting-edge technologies
Remote-first approach
Option to visit offices in Warsaw and Kyiv
Paid day offs and sick leaves
Regular performance reviews
Financial support — consultations for private entrepreneurs from our dedicated finance team

Before you apply

Recruitment process: Intro call > Test Task > Technical Interview > Final Interview > Reference check > Offer

About the company

Zeely AI is the agentic AI platform for creating, launching, and scaling paid ads. It is the #1 AI product in its niche in the U.S. market.