Software Engineer & Technical LeaderLondon, UK

Portfolio

Muhammad Zia · Software Engineer & Technical Leader

Building systems that define industry standards for scale, reliability, and performance.

Building systems that define industry standards for scale, reliability, and performance.Full Stack Engineer with 5+ years leading technical direction on production-critical systems. I architect applications, design scalable APIs, and establish engineering practices that elevate entire teams—from technical design through CI/CD automation and cloud deployment.

I deliver impact where it matters most:
Global platforms serving 200+ international operations teams. Experimentation infrastructure improving conversions by 34% across enterprise clients. Error handling systems capturing 99.8% of failures and reducing support burden by 47%. Design transformations improving developer velocity 3x. Bulk processing systems handling 10M+ records. Each project built with architectural rigor, clean abstractions, and long-term vision.

Recent Leadership:
  • Reduced deployment friction by 68% and cut cloud costs $2.4K/month through CI/CD optimization
  • Improved system reliability to 99.8% uptime through comprehensive error handling architecture
  • Accelerated feature delivery 3x by establishing design system standards and component libraries
  • Architected industrial schematics platform used globally across marketing and engineering operations

Trusted to introduce structure in fast-moving environments, mentor engineering teams, and make the technical decisions that determine whether systems scale or collapse under pressure.
Top Rated on Upwork | 100% Job Success Score | MSc Software Engineering, Kingston University
Open to lead roles and consulting engagementsLondon, UK

Impact

Career Highlights

I've won many hats as a software engineer, from full stack to architecture and everything in between.

Schematics platform for global operations

Present - 2024

Delivering core internal applications used across marketing and operations, including a schematics platform enabling teams to create and manage complex diagrams for trucks, oil refineries, plastic manufacturing plants, inside-out protection systems, tugboats and more.

Own architecture and feature delivery end-to-end — from system design to deployment — ensuring scalability, clean abstractions and long-term maintainability. Used across global marketing operations.

ArchitectureTypeScriptReactNode.jsFull Stack

Multi-Arm Bandit optimization & Visual Editor

2024 - 2021

Delivered Multi-Arm Bandit (MAB) features and contributed significantly to the Visual Editor, improving experimentation performance, usability and customer experience at Convert.com.

Enhanced experimentation platform capabilities, maintained backend systems ensuring schema integrity, and raised engineering quality through clean-code practices and proactive technical debt management.

ReactNode.jsTypeScriptExperimentationOptimization

Global error boundary & bulk tagging systems

2024 - 2022

Built a global error boundary system that captured app-wide failures and delivered bulk tagging across campaigns, accounts and emails at Instantly.

Sharply reduced user frustration and support ticket volume. Major productivity improvement for high-volume users. Enhanced codebase structure, stability and API reliability.

ReactError HandlingFull StackProductivity

Design system & CI/CD pipeline upgrade

2022 - 2020

Led a full front-end redesign, implementing a modern design system and upgrading the CI/CD pipeline to Heroku at Pocketnote.

Improved overall UX consistency and performance. Reduced deployment friction and lowered operational cost. Delivered features across React and Node.js, improving stability, speed and maintainability.

ReactDesign SystemCI/CDDevOpsNode.js

Vue.js to React.js migration

2019

Migrated the front-end from Vue.js to React.js at Cobija Industries, improving maintainability and performance.

Improved UI responsiveness and optimized backend interactions. Led a remote team of developers, providing technical direction and code reviews. Delivered stable, well-tested features.

ReactMigrationLeadershipFull Stack

Writing

Blog Posts

Posting my thoughts and learnings as I go.

Building Scalable Error Handling Systems: How We Reduced Support Tickets by 47%

01/02/2025

A deep dive into architecting production-grade error boundaries that capture 99.8% of failures.

ReactNode.jsError HandlingSystem ArchitectureWeb DevelopmentSoftware EngineeringRead →

System Architecture Patterns for React/Node Applications: Building for Scale from Day One

09/02/2025

How proper architectural decisions early on can 3x developer velocity and prevent technical debt.

ReactNode.jsSystem ArchitectureSoftware EngineeringWeb DevelopmentTypeScriptBest PracticesRead →