Looking for a job

Zar Wali

@zarwali

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I build low-latency C++ trading systems and secure cybersecurity applications.

Pakistan

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What I'm looking for

I'm looking to build secure, high-performance trading or financial technology systems, with opportunities to work on low-latency infrastructure, market microstructure, cybersecurity, and end-to-end software delivery.

I built and deployed a C++ high-frequency arbitrage bot on the Polymarket V2 CLOB API, generating $14,200 P&L with a 68% win rate. I engineered sub-millisecond execution pipelines, lock-free hot paths, native signing, and FOK dual-leg execution while reaching internal tick-to-trade latency below 50 µs.

Alongside quantitative development, I build secure full-stack and systems applications, including a Cybersecurity Incident Management System using Node.js, React, Express, and PostgreSQL. As a freelance developer and consultant, I manage projects from client requirements through end-to-end delivery for international clients.

Experience

Work history, roles, and key accomplishments

Current

Freelance Developer & Consultant

Current

Various Clients

Jan 2024 - Present (2 years 7 months)

Delivered custom software and web development projects for international clients across Switzerland and remote markets. Managed the full software development lifecycle from client briefings to end-to-end project delivery across multiple simultaneous engagements.

Software Development Web Development Project Management Client Communication

Car Rental System Developer

GIKI

Built a modular, console-based car rental system in C++ using advanced OOP principles, including inheritance, abstraction, and polymorphism. Developed inventory management, dynamic billing, and secure customer authentication, with a color-coded console UI and class-based role access.

C++Inheritance Polymorphism UML

HFT Arbitrage Bot Developer

Personal Project

Architected and deployed a C++ high-frequency arbitrage bot on the Polymarket V2 CLOB API, executing statistical latency arbitrage and structural Dump Hedge strategies, generating $14,200 P&L with a 68% win rate. Engineered sub-millisecond execution pipelines with native POLY_1271/ERC-7739 C++ signing, zero-allocation hot paths, and lock-free data structures, achieving tick-to-trade latency under

C++Low Latency Systems Memory Alignment High Frequency Trading Polymarket API Linux CLI Malware Analysis

Cybersecurity Incident Management Developer

GIKI

Developed a full-stack Cybersecurity Incident Management System using Node.js, Express, React/Vite, and PostgreSQL. Implemented secure JWT authentication, bcrypt password hashing, and RBAC middleware, with a relational schema for incident logging and audit trails.