Zain-Ul-Mustafa
Level 1
Senior Software Engineer, AI Chatbot Developer, SaaS and Automation Expert
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Werkervaring
Team Lead and Senior Software Engineer
Integritech • Fulltime
Jul 2024 - Feb 2026 • 1 yr 7 mos
Architected AI-powered automation systems using AWS Bedrock with contextual Knowledge Base integration. Designed secure bi-directional CRM and field-service integrations using REST APIs and webhook-driven architecture. Built custom GoHighLevel applications with automated 22-hour token regeneration system ensuring uninterrupted API operations. Implemented PHPUnit-driven testing standards improving code reliability and reducing production defects. Led remote development team and aligned technical roadmap with business objectives and scalable SaaS architecture principles.
Senior Software Engineer
Carpediem • Fulltime
Jan 2022 - Jul 2024 • 2 yrs 6 mos
Led full lifecycle development of scalable SaaS applications deployed in production environments. Engineered optimized API ecosystems improving system response performance and integration efficiency. Introduced Test-Driven Development (TDD) and structured feature testing across engineering workflows. Delivered high-availability systems through secure cloud deployment and collaborative remote execution.
Team Lead PHP Developer
Symits • Fulltime
May 2017 - Jan 2022 • 4 yrs 8 mos
Developed enterprise-grade RESTful APIs and modernized legacy system architectures. Managed development team while enforcing clean code standards and structured testing practices. Improved application maintainability and scalability through systematic refactoring initiatives.
9 Reviews
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justinrivas798
Terugkerende klant

Verenigde Staten
Good job by Zain
US$ 800-US$ 1.000
Prijs
3 weken geleden
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dunkens
Terugkerende klant

Verenigde Staten
I recently worked with Zain to set up a direct API connection between my ServiceTitan and GoHighLevel (GHL) accounts, and I couldn’t be happier with the results. He built a clean, real-time dashboard that lets me actually see the data flowing between the two systems — which gives me total confidence...
US$ 1.000-US$ 1.500
Prijs
5 weken geleden
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Reactie van de freelancer
dunkens
Terugkerende klant

Verenigde Staten
Excited expectations!!
Tot maximaal US$ 50
Prijs
3 dagen
Looptijd
devynnthompson
Terugkerende klant

Verenigde Staten
Zain was fantastic in delivering what automations I needed for my team. He went above and beyond to explain what each step needed and delivered what he promised.
US$ 400-US$ 600
Prijs
3 dagen
Looptijd
devynnthompson
Terugkerende klant

Verenigde Staten
Was responsive and helped my my business
Tot maximaal US$ 50
Prijs
8 dagen
Looptijd