Danil Rybalkin

Product & systems engineer · Remote

I build payment rails, networks, and AI agents, and ship them.

I take ambiguous ideas from architecture to production, and then keep them running. Shipping production software since 2018 across payments, infrastructure, networking, and applied AI.

Now: running Vulta, owning the payout platform at Fleets, and shipping the Nomad alpha.

Tools I reach for

  • LanguagesGo · Rust · TypeScript · Python
  • Web & dataReact · PostgreSQL · Redis
  • InfrastructureDocker · Linux · Nginx
  • Systems & AITCP/IP · Cryptography · LLM tooling · MCP

Selected projects

See all on GitHub

Experience

Fleets s.r.o.

Senior software engineer · Since 2025

Own the fleet-management and driver-payout platform end to end: ride-platform imports, commissions, rent and debt, SEPA payouts, invoices, and reporting.

Vulta

Founder & senior software engineer · Since May 2026

Founded and built a non-custodial payments SaaS in Go and Next.js: checkout and payment links, blockchain detection, wallet pools, provider failover, signed webhooks, subscriptions, and team API access. Bootstrapped to paying merchants.

AurumPay

Founder & backend engineer · Dec 2025 to Jun 2026

Built and ran a custodial multi-chain gateway in Go: HD wallets, chain scanners, confirmation state machines, gas management, automated sweeping, and signed webhooks. Processed real commercial payments; the reusable core is now open source.

Farby PRO

Senior full-stack engineer · Contract · Since May 2026

Built two production systems for a B2B coatings business: an ecommerce and content platform with a custom CMS, and a process-control CRM covering sales, testing, production, delivery, and payments.

Earlier: freelance full-stack development for small businesses (2018-2022), ecommerce at Nano-City / Farmel (2022), ISP network operations at Pegas Telecom (2021), and flight operations at TapJets (2022-2023).

Want to build something difficult?

Open to senior full-time roles and select contract work. Remote, based in Russia. Email is best, Telegram works too.