Muhammad Asyam Jayanegara
Backend & Platform Engineer
Go · PostgreSQL · Distributed Systems · Web3 & Payments
Hey! Thanks for stopping by. I enjoy building backend and platform systems where correctness, degraded modes, reconciliation, and financial state matter — especially systems that need to stay predictable when the real world gets messy.
My current work centers on Go/PostgreSQL services, prediction-market infrastructure, payment authorization, and Web3 transaction safety. I'm always interested in learning from strong engineers, collaborating on ambitious products, and meeting people working on hard infrastructure problems.
I'm currently open to backend, platform, infrastructure, distributed-systems, and Web3/payments engineering roles and internships.
| Project | What I built / owned | Engineering signals |
|---|---|---|
| RetroPick Markets V1 | Polymarket-native prediction-market product with a Go BFF, PostgreSQL/sqlc projections, OpenAPI contracts, realtime market data, wallet flows, and degraded-mode semantics. | Go, PostgreSQL, OpenAPI, state machines, realtime systems, reliability |
| SpendRail | Programmable financial authority for AI agents with deterministic ALLOW / ASK / BLOCK policy before wallet execution. |
TypeScript, x402, MCP, policy engines, circuit breakers, 169 tests |
| Aegis RPC | JSON-RPC-shaped pre-broadcast screening gateway that evaluates transactions before they reach the chain. | EVM RPC, deterministic policy, transaction decoding, SAFE/WARN/BLOCK preflight |
| Yubie Platform | Production-oriented commerce monorepo with explicit domain, API, validation, commerce-provider, CI, and launch-safety boundaries. | Next.js, TypeScript, domain modeling, validation, CI/CD, production readiness |
| EzDeploy | AI-assisted smart-contract deployment workflow for OpenZeppelin-based ERC-20/721/1155 contracts; 3rd Place, Base Batches APAC 2025. | Solidity, Base, OpenZeppelin, Ethers.js, deployment tooling |
- Backend & data: Go, PostgreSQL, sqlc, SQL, REST/OpenAPI, WebSocket/SSE
- Reliability: idempotency, reconciliation, state machines, degraded-mode design, liveness/readiness, fail-closed flows
- Web3 & payments: EVM, Base, Polygon, Polymarket Gamma/CLOB, WalletConnect/AppKit, Foundry, OpenZeppelin, x402, MCP
- Platform: Docker/Compose, Linux, GitHub Actions, CI/CD, VPS/AWS, Next.js, TypeScript
- RetroPick PR #12 — Markets V1 main cleanup
- RetroPick PR #11 — transactional signal pipeline
- RetroPick PR #6 — backend-first Markets V1 foundation
- Yubie PR #1 — full-stack commerce monorepo
- 3rd Place — Base Batches APAC 2025, Coinbase / Base
- ShardLab Protocol Camp Cohort 9 graduate — built and presented RetroPick at the Coinfest Asia 2026 Final Demo
- Background spanning software engineering, Web3 systems, technical research, and competitive problem solving
Open to backend / platform / infrastructure engineering opportunities.
Feel free to reach out — I'm always happy to talk engineering, infrastructure, markets, or ambitious ideas.