: Backend / Systems Engineer (freelance, open to full-time remote). Solana/Anchor programs also available.

: TypeScript/Node.js, Rust, C++. Anchor, Next.js, Redis, PostgreSQL/Prisma.

: 3 years, self-taught and project-based.

:
- Enmex: centralized crypto exchange. Rust orderbook/matching engine plus backend in Typescript with Redis for Horizontal scaling.
- Kairos Quantum: production crypto alert system. Redis Pub/Sub plus Sorted Sets for O(log n) threshold detection, PM2 cluster mode.
- Arbiger: stateless two-hop atomic arbitrage program (Raydium CLMM -> Orca Whirlpool) in Rust/Anchor, with LiteSVM and mainnet-fork end-to-end tests.
- Merged PR #660 in solana-foundation.

: 40 hrs/week, UTC+6 (Dhaka). Can overlap with EU/US hours.

: (B.Sc. CSE, UIU, CGPA 3.51/4.0), 400+ LeetCode/Codeforces problems solved. GitHub: github.com/Enmilo-dev | X: @EnmiloX | LinkedIn: linkedin.com/in/raihanx. DM me.