Principal Solutions Architect & Consultant
— Muhaimin Tech / Freelance
2017 – Present | Islamabad / Remote
Upwork Top Rated Plus (100% JSS) • Long-term client engagements across US, Germany, Australia, and UK.
- Architected and deployed full-lifecycle multi-tenant SaaS & cloud platforms on AWS (Beanstalk, RDS, EC2, SQS, S3) and Linux VPS, maintaining 99.9% uptime and zero-downtime schema upgrades.
- Built production Applied AI & LLM solutions (Gemini 2.5 Flash, Claude 3.5 Sonnet) featuring structured JSON output parsing, multimodal vision OCR, and self-correcting dynamic SQL generation loops.
- Delivered 3-year full-stack engineering engagement for Körber Digital (Germany) on OBS logistics platform using Kotlin (Ktor), Vue.js, Azure Form Recognizer, and Docker.
- Served as Lead Architect for PLM Group (Australia) on UIS Cloud SaaS & PartsLocator platform, reverse-engineering legacy SOAP/XML APIs and building AI-powered catalog matching.
- Conducted deep root-cause debugging in high-throughput production environments, resolving JVM/Node thread pool deadlocks, memory leaks, and complex database query execution bottlenecks.
Lead Software Engineer & Technical Architect
— Elixir Technologies
15 Years (2002 – 2017) | Islamabad / International
Enterprise Customer Communications Management (CCM) Platforms serving Global Fortune 500 Clients.
- Architected core composition engines and web-based document design subsystems inside a 50+ engineer enterprise CCM platform serving Anthem, Blue Cross Blue Shield, Deloitte, and Prudential.
- Engineered multi-threaded SyncManager, high-performance font parsing subsystems, and high-throughput NDF converter engines in C++, Java, and .NET (C#).
- Designed and optimized mission-critical document composition pipelines producing millions of personalized transactional billing statements under strict sub-second SLAs.
- Served as Scrum Master & Scrum of Scrums Lead across US and offshore teams, mentoring senior engineers and enforcing rigorous CI/CD, unit testing, and architectural standards.