Posted Sep 30, 2026

Senior Backend Engineer (memoryOS)

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Flyer One Ventures - is an early-stage venture capital fund investing in ambitious CEE and Ukrainian founders who build global companies. We’ve already invested in 95 startups and deployed nearly €40M. We also help our companies with recruitment and connect them to industry experts.

Currently, we're looking for an Senior Backend Developer for our portfolio company - memoryOS .

memoryOS is the world’s #1 app for improving memory and focus, helping people overcome the forgetting curve and retain needed knowledge. Proven learning and memory techniques are merged with Duolingo-like gamified e-learning with patented virtual mind palace tech. Co-founded by 2X World Memory Champion — Jonas von Essen.

We’re a remote team of 30+ diverse, like-minded professionals, united in solving the problem of the forgetting curve.

We are proud to be the Most Funded App on Kickstarter. The memoryOS was featured on TechCrunch and recognized by Google Brands Accelerator as a product that is “light years ahead of any other company in memory space”.

What you’ll be working on:

About you:

Would be a plus:

You will also get:

Join us!

5+ years backend development experience; strong Node.js and NestJS; PostgreSQL; scalable architecture; English B2; experience with GCP, CI/CD, and React preferred.

Key Responsibilities

Skills & Tools

Node.js, NestJS, Redis, TypeORM, PostgreSQL, GCP, React

Job Details

Benefits

About memoryOS

The world's #1 app for improving memory and focus, using gamified e-learning and patented virtual mind palace technology. — Industry: Information Technology