remotely.living

Senior Full-stack Engineer (Back-end Architecture)

Universium · Remote - Countries of Europe or Ukraine · 2026-09-02

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Job description

Hey there! 👋

We're looking for an expert full-stack React/Node.js engineer with experience in building AI tools to join our growing team! You would be joining a truly fast-growing team and working on a product that is already having a significant impact in the United States.

Although this position expects you to be a full-stack engineer, your focus will be mostly on the back-end infrastructure and the optimization of the existing product architecture (80% back, 20% front).

Our preferred candidate will have: 🦄

- Strong experience with building scalable back-end infrastructure;

- Working with high-load systems;

- Optimizing systems with relational databases (PostgreSQL);

- Extensive experience with Elasticsearch;

- Clear demonstration of leadership initiatives in optimizing & scaling cloud infrastructure;

We also expect from you the following: 🎯

- English: Advanced (C1+, initial screening is conducted in English);

- B. Sc. in Computer Science or similar;

- Excellent communication, collaboration, problem-solving, and analytical skills;

- 5+ years of writing commercial React.js and Node.js apps;

- Extensive experience with SQL-based databases;

- Extensive experience with Amazon Web Services;

- Understanding of LLMs and their application to building web applications;

What’s in it for you: 🌴

Professional Growth & Lifestyle:

- Remote work and flexible working hours (our team is 100% remote);

- Opportunity to join an international team of a fast-scaling startup;

- Leadership initiatives;

Benefits:

- Annual vacation: 20 business days (100% compensation)

- Annual sick leave: 10 business days (100% compensation)

- Competitive compensation.

Please, feel free to reach out if you have any questions!

Best regards,

Universium Team ❤️