Mark Chukwu

Senior Full-Stack & AI Engineer with 4+ years building and shipping production systems across React, TypeScript, Python, Node.js, and FastAPI. Deep experience integrating LLMs and AI agents into real products — including RAG pipelines, autonomous agent systems, structured output enforcement, and multi-agent orchestration.

Proven track record of solo ownership: architected and shipped a live B2B SaaS handling 3,000+ daily transactions end-to-end. Expert practitioner of AI-augmented development using Claude Code and Cursor daily. Strong written communicator with a rigorous eye for correctness, edge cases, and failure modes in complex systems.

Senior Full-Stack Engineer - Purple - Israel (Remote)

(2026-04)

• Own end-to-end architecture and delivery of self-hosted Node.js/TypeScript applications — managing infrastructure, networking, security, and external database configuration independently.
• Build scalable backend services with REST endpoints, custom authentication, input validation, and structured logging; design data models across Supabase, Postgres, and Firebase with caching strategies.
• Develop and maintain Wix CLI marketplace apps with dashboard extensions and admin UIs, leveraging the Wix SDK and Platform APIs to integrate deeply with Stores, Orders, and eCommerce objects.
• Implement complex product logic including configurable settings panels, additional fees rules, file upload flows, and service plugins (SPIs) for shipping address validation.
• Leverage Claude Code and Cursor throughout the development lifecycle to accelerate delivery, streamline refactoring, and sustain high-velocity output without sacrificing code quality.

Frontend Engineer - Jobin.cloud - Dublin, Ireland (Remote)

(2024-12 - 2026-04)

• Built and shipped scalable production features for a B2B SaaS platform, owning the full lifecycle from ambiguous requirement through architecture, implementation, testing, and deployment.
• Led Vue-to-React migration, introducing scalable architecture and Redux Toolkit state management — feature delivery speed doubled without regressions.
• Integrated frontend applications with RESTful and GraphQL APIs, implementing authentication flows, real-time data feeds, and business metric endpoints with comprehensive error handling.
• Built reusable UI component libraries using TanStack Query, Tailwind CSS, and shadcn/ui; established consistent design system patterns adopted across the entire product team.
• Debugged complex frontend issues including optimistic UI updates, race conditions, and cross-browser compatibility — resolving them before they reached production.

Full-Stack Developer - ProxySock - Canada (Remote)

(2024-11 - 2025-05)

• Solo-built a complete B2B SaaS platform from zero — designing and shipping the frontend, backend APIs, PostgreSQL schema, Stripe payment integration, and AWS cloud infrastructure entirely independently.
• Wrote and optimised SQL across a multi-tenant PostgreSQL database with 3,000+ daily transactions, designing schema, implementing indexes, and ensuring data integrity at scale.
• Improved platform reliability using Redis caching, query optimisation, and Sentry observability — maintaining 99.9% uptime across the live production system.
• Caught a critical security vulnerability in LLM-generated code during review before it shipped — demonstrating rigorous, adversarial code analysis as standard practice.
• Set up Docker containerisation and GitHub Actions CI/CD pipeline enabling automated builds, preview deployments on every PR, and reliable production releases.

Junior Frontend Developer - Proficient Computing - Nigeria (Remote)

(2021-06 - 2022-05)

• Built responsive web applications for e-commerce and booking platforms with clean component structure, REST API integration, and cross-browser compatible layouts.
• Introduced Jest and Cypress automated test coverage from 0% to 85%, establishing reliable testing discipline and maintainable code standards.

WordPress Web Developer - Jehoworld - Washington DC, USA (Remote)

(2019-07 - 2021-06)

• Built and maintained professional client websites for a US-based company, delivering custom themes, REST API integrations, and performance optimisation — cutting average page load from 4s to under 2s.

BSc (Hons) - Computer Science - Edinburgh Napier University (2026)

Full-Stack Bootcamp - Full-Stack Development - Microverse (2022 - 2023)