/Senior Backend & Automation Engineer · Crypto Systems Specialist

I build backends and automation that don't break — and crypto systems are where I go deepest.

I'm Oussama Allamou (0xMowgli) — a backend & automation engineer. I ship the things every product needs: APIs, integrations, data pipelines, queues, and the automation that takes the manual, repetitive work off people's plates — all running on Docker and Linux, monitored and built to stay up.

Crypto is my specialty — the part most backend engineers can't do: low-latency trading systems, sniping and copy-trade bots, smart contracts, and on-chain automation across Solana and EVM chains, where milliseconds and reliability decide whether it makes money. Four years of real production systems behind it.

View systems I've built→Download resumeGitHub ↗

Experience

Full history →

Roles where I owned real backend systems in production.

Backend & Automation Engineer — Trading Systems (Freelance)

May 2024 — Present

Freelance backend & automation for dozens of clients — low-latency trading bots, copy-trade/sniping strategies, and the Solana node infrastructure behind them, all run on Linux.

  • Node
  • NestJS
  • gRPC
  • Redis
  • Solana nodes
  • Linux
  • Low-latency

Backend & Smart Contract Engineer @ Kayros

Feb 2023 — Apr 2024

Built NestJS backends and the smart contracts behind a multi-network gaming wallet (9,000+ users), an NFT marketplace, and a fiat-crypto exchange.

  • NestJS
  • Solidity
  • ethers.js
  • Hardhat
  • EVM
  • Backend APIs

Backend & Smart Contract Engineer @ DevSpaceHub

Jan 2022 — Jan 2023

Built the NestJS backend and Solidity contracts for a community-engagement platform — points, reward orchestration, and on-chain prize distribution.

  • NestJS
  • Solidity
  • ethers.js
  • Hardhat
  • Backend APIs

Selected projects

All projects →

Products, bots, and tools I've designed and shipped.

PHINIX — Low-Latency Trading Engine↗

2025
Trading infra · designed & built solo

A low-latency Solana trading bot I designed and shipped end-to-end. It streams market data over gRPC from dedicated nodes, caches hot state in Redis, and executes sniping, copy-trading and real-time PnL with customizable Jito fee strategies — engineered to land transactions before the rest of the market.

  • Node
  • NestJS
  • gRPC
  • Redis
  • Solana Web3
  • Dedicated nodes
  • Jito

Freelance Automation — Bots & Trading Strategies

2025
Freelance · dozens of clients

Across dozens of freelance engagements I automate the slow, boring, manual work clients don't want to touch — and build the profitable kind: copy-trading, sniping, and custom strategies that run themselves on dedicated Solana nodes I provision and tune on Linux. Each one is a small, reliable backend that just keeps running.

  • Node
  • Solana nodes
  • Linux
  • Copy-trade
  • Sniping
  • Automation

Chainge Finance — Multi-Chain Swap Bot↗

2024
Automation · backend lead

A Telegram trading bot spanning five networks for Chainge Finance, a leader in cross-chain swaps. NestJS backend with Ethers.js and Solana Web3: routes swaps through KyberSwap and Jupiter, handles wallet creation, deposits, cross-chain bridging, sniping and a gem finder — backed by Helius and Moralis nodes for reliable, low-latency reads.

  • NestJS
  • Ethers.js
  • Solana Web3
  • KyberSwap
  • Jupiter
  • Helius
  • Moralis

Multi-Chain Wallet Service @ Kayros

2024
Kayros · backend infra . Project Manager

The backend wallet service behind Kayros's play-to-earn gaming platform — a single typed interface for key management, signing, and transfers across 20+ EVM networks. Built so the game and marketplace could support multi-chain custody without rebuilding it per network. Served 9,000+ users.

  • NestJS
  • TypeScript
  • EVM
  • ethers.js
  • Key management

What I work with

Languages
  • TypeScript
  • JavaScript
  • Solidity
  • Node.js
  • SQL
  • Bash
Backend & APIs
  • NestJS
  • Express
  • REST
  • gRPC
  • GraphQL
  • WebSockets
  • Microservices
Data & messaging
  • PostgreSQL
  • MongoDB
  • Redis
  • RabbitMQ
  • Kafka
  • Prisma / TypeORM
Web3 & crypto
  • Smart contracts
  • Hardhat
  • Foundry
  • ethers.js
  • web3.js
  • viem
  • Solana Web3
Infra & ops
  • Linux
  • Docker
  • CI/CD
  • Nginx
  • Solana & EVM nodes
  • VPS / Bare-metal
  • Monitoring
  • Git
Practices
  • System design
  • Automation
  • Testing (Jest)
  • Observability
  • Security
  • Trading bots

Building something that has to be fast and not break?

I'm open to senior backend & automation roles and select contracts.

Get in touch →
0xMowgli