Available for contract work

Trading · DeFi · AI Pipelines

Yahya
Ehsan.

I build trading infrastructure, DeFi systems, and AI automation pipelines in Rust and Python. The kind of work where latency and correctness actually matter.

<100msLive order execution latency
1K+Orders/day processed, zero downtime
75M+Ops/sec on custom Redis clone
$5K+Escrow transactions, zero incidents
Rust
Python
Tokio
WebSockets
Solana / Anchor
Solidity / EVM
PostgreSQL
Redis
LLM APIs
TypeScript
Docker

Trading Infrastructure

Execution backends, order lifecycle state machines, risk controls, copy trading systems, arbitrage bots. Built for real money in production.

DeFi & On-Chain Systems

Solana and EVM smart contracts, non-custodial marketplaces, blockchain indexers, on-chain data pipelines, CLOB integrations.

AI & Automation Pipelines

LLM integrations into production systems, vision AI workflows, data extraction and processing pipelines, ML-based filtering and execution logic.

Selected work
Open source

High-Performance Redis Clone

Rust / Multi-threading / Lock-free Data Structures

Thread-safe in-memory key-value store with RESP-like protocol. Lock-free data structures cut contention overhead by 85% under high concurrency. Outperforms standard Redis by 3× on benchmarks.

75M+ ops/sec 3× faster than Redis 85% less contention
  • Lock-free concurrent hash map implementation
  • Custom memory allocator for reduced fragmentation
  • Zero-copy networking with io_uring support
  • Full RESP protocol compatibility
View on GitHub →
Production

Live Trading Execution Backend

Rust / Tokio / WebSockets

Live trading execution backend processing 1,000+ orders/day with zero downtime. Kill switches and risk controls that prevented $10K+ in potential losses during testing. Full order lifecycle state machine.

1K+ orders/day<100ms latency40% latency reduction
Production

ML Copy Trading System

Rust / Python / ML Filtering / WebSockets

ML-based hedge execution system that copies trades from a source wallet to multiple destinations with intelligent filtering. Real-time position mirroring, execution logic, and risk controls across wallets.

ML-based filteringMulti-wallet executionReal-time mirroring
Production

Polymarket Arbitrage Bot

Rust / CLOB API / WebSockets

Automated arbitrage execution on Polymarket. Identifies price discrepancies across related markets and executes trades automatically via CLOB API with real-time order book feeds.

Fully automatedCLOB integrationReal-time execution
Production

Non-Custodial Blockchain Marketplace

Rust / Solana / Anchor / React

PDA-based escrow marketplace handling $5K+ in transactions with zero security incidents. Conditional token release, optimised on-chain data storage reduced transaction costs by 20%.

$5K+ escrow0 incidents20% cost reduction
Production

Polymarket Trading Ladder

Electron / React / WebSockets

Desktop trading UI handling 6,000+ real-time price updates per minute with sub-100ms latency. Live order book integration, wallet connection, and real-time execution interface. Shipped in 2 weeks.

6K+ updates/min<100ms latency
Production

Blockchain Document Notarization

Node.js / TypeScript / Solidity / SQLite

MVP on Ethereum Sepolia for immutable document verification. REST API handles off-chain SHA-256 hashing so no sensitive data touches the chain. Custom EVM smart contract via ethers.js.

View on GitHub →

Systems Engineering

Open source

Low-Level HTTP Server

C++ / BSD Sockets / epoll

Multithreaded HTTP/1.1 server handling 10K+ concurrent connections with persistent connections and zero-copy I/O.

93K req/sec10K+ connections
Academic

Custom OS Kernel

C / x86 Assembly / Memory Management

Bare-metal OS kernel with paging, process scheduling, interrupts, and FAT-style filesystem. Virtual memory manager and sync primitives built from scratch.

View on GitHub →
Experience

Backend Systems Engineer

Orbit Consulting (SMC-Pvt) Ltd · Remote

Designed and maintained high-availability backend services for enterprise clients, focusing on database performance and microservice architecture. Reduced query latency by 40% through query optimisation and migrated critical services to PostgreSQL and Redis. Set up CI/CD pipelines and wrote API documentation across multiple production deployments.

Mar 2022 — Sep 2025

Performance Engineering Intern

Coffee International · Remote

Profiled and optimised rendering engine performance, cutting load times by 25%. Resolved concurrency bottlenecks in transaction flows and ran load testing to validate system stability under peak conditions.

Apr 2022 — Sep 2023

Education

BSc Computer Science

Vrije Universiteit Amsterdam, Netherlands

Focus: Operating Systems, Systems Programming, Concurrent Computing, Advanced Data Structures

Selected projects: Unix Shell in C, Distributed Systems consensus algorithms

Client feedback
★★★★★ 5.0

"Good work and clear documentation."

Rust / Wasm · Feb 2026

Clear Communicator
★★★★★ 5.0

"Strong technical expertise, delivering a well-structured, reliable implementation aligned with the strategy requirements. Strategic input, responsiveness, and problem-solving mindset added clear value."

Polymarket Bot · Jan 2026

Reliable Solution Oriented Committed to Quality
★★★★★ 5.0

"Did a good job. Communication was clear. Finished on time and followed the instructions well."

Research · Jan 2026

Reliable Accountable for Outcomes

Contact

Currently
available.

Taking on contract work in trading infrastructure, DeFi, and AI pipelines. If you're building something that needs to be fast and correct, let's talk.

Email

yahyaehsan137@gmail.com

Location

Amsterdam, Netherlands — open to remote

GitHub

github.com/yussypu

LinkedIn

linkedin.com/in/yahyaehsan