Rust Developer

Onside is building the first alternative iOS app marketplace in the EU — a platform where developers can publish, distribute, and monetize their apps outside the App Store. We’re here to give developers more freedom, better monetization tools, and transparent policies. Think less bureaucracy, more creativity — and a team that actually ships.

What you’ll be doing:

• Build core backend services in Rust, powering our marketplace and payments infrastructure.
• Design and implement scalable APIs, background workers, and integrations with external partners.
• Work on non-custodial wallet logic, payouts, card issuing and other fintech-adjacent components.
• Keep our systems secure, observable, and performant under real load.
• Collaborate with DevOps, Frontend, and Product teams to bring new features from design to production.
   

Tech we use:

Rust (axum, tokio), PostgreSQL, sqlx, Kubernetes, GCP, Docker, Prometheus, Grafana, Tempo, Loki, Sentry.

Requirements

You’ll fit in if you:

• Have 4+ years of hands-on backend experience on Rust or Rust with C++ before.
• Have solid understanding of distributed systems, async programming, and production-grade APIs.
• Have worked in fintech, billing, or certification.
• Speak good English and Russian.

Why you’ll like it here:

• You’ll build something new and meaningful.
• Small, senior team with real ownership and no corporate layers.
• Fully remote, flexible hours, straightforward communication.
• We move fast and value people who do the same.

If you are passionate about technology and want to be part of a team that is redefining the marketplace experience, we would love to hear from you!