Senior Back-End Developer

Zeely

Ukraine Remote permanent

Posted: August 25, 2025

Quick Summary

Join our team as a Senior Node.js Developer to build innovative products with clean code and a strong team spirit. As a key member of our development team, you'll work closely with stakeholders to drive product growth and influence key decisions. With a strong focus on clean code and a collaborative team environment, you'll be part of a dynamic and growing company.

Required Skills

Job Description

Join us as a Senior Node.js Developer and become part of a team that builds an innovative product with clean code, bold solutions, and a strong team spirit! You’ll work directly with stakeholders, influencing key decisions and driving product growth.

Zeely AI is a platform that leverages artificial intelligence to generate viral UGC videos and ad banners, and to launch effective ad campaigns on Facebook and Instagram — helping small businesses get noticed and grow.

We already have 1 million users in the US, making us one of the Top 3 players in our vertical on the American market by active user count. Zeely is a stable product, growing more than 4x annually in the US, with a team of 130+ professionals.

We are proud to be part of the Google for Startups Alumni community and official partners of Meta and TikTok. In 2024, Zeely was recognized among the Top 25 fastest-growing startups in Ukraine by Forbes.

Your key responsibilities:

• 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

What we’re looking for:

• 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

Why it’s exciting to work with us:

• Work with cutting-edge technologies and contribute to building AI-powered tools

• Join a strong A-level team that motivates you to grow and achieve more

• Remote-first approach: work from anywhere, with the option to visit our offices in Warsaw and Kyiv

• Paid day offs and sick leaves — we care about your work-life balance

• Regular performance reviews to ensure your growth is transparent and rewarded

• Financial support — consultations for private entrepreneurs from our dedicated finance team

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

Send us your CV — we’d love to get to know you better!

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