Ship fast.
Break nothing.
I'm Sheryar Ahmed, a full-stack engineer who builds and operates production. This is my stack, running live for 3,000+ users.
What I've actually shipped
Companies & clients I've built for
Pathment
TechWinture
Raumdeuter
PACK
Oqvest
TrustOnCloud
Royal Vision
HealthSIA
Barkat Ali Jewellers
Z2A TechOptimizations I've shipped
Real before / after from production code I've written and run. Not textbook examples.
A dashboard fired ~12 API calls sequentially; one slow widget blocked the whole page (6-8s) for 500+ active users.
1async function loadDashboard() {2 // each widget waits for the previous one3 const revenue = await getRevenue()4 const rankings = await getRankings()5 const activity = await getActivity()6 const surveys = await getSurveys()7 8 // a single slow call blocks all of them: 6-8s9 return { revenue, rankings, activity, surveys }10}1async function loadDashboard() {2 // independent widgets resolve together;3 // one failure never blocks the rest4 const results = await Promise.allSettled([5 getRevenue(), getRankings(),6 getActivity(), getSurveys(),7 ])8 9 // critical-path data uses Promise.all10 return mapSettled(results) // full load under 1s11}Experience
Full Stack Engineer
TechWinture (Staff Augmentation) • Oct 2025 - Present • Remote
- Raumdeuter (fan engagement): Designed a real-time architecture with SSE + Redis Pub/Sub across instances; cut dashboard load from 6–8s to sub-second; built a gamification engine and refactored a monolith into layered MVC with API versioning
- PACK (Azure SaaS): Led migration of a FastAPI service from an improperly-implemented Hexagonal architecture to a Modular structure (cut change-surface from ~7 files to 1–2); integrated Microsoft Graph API + Azure Entra ID
Founding Engineer
Pathment • 2025 - Present • Remote
- Designed, built, deployed, and operate a B2B mentorship SaaS with 3,000+ users. 35+ data models, owned end to end from schema to CI/CD
- Built a scoped authorization system (org, program, clan, self) with a permission catalog, role delegation, and full audit logging
- Engineered an AI roadmap pipeline with multi-provider fallback (Groq, then OpenAI, then a rule-based fallback) for reliable structured output
- Postgres-backed email queue (retries, dead-letter, idempotency) + zero-downtime release runbook with Docker, Caddy, and GitHub Actions CI/CD
Full Stack Engineer
Appsologix • Jun 2024 - Sep 2025 • 1yr 4mo
- HealthSIA: 7-role RBAC healthcare platform covering the full patient lifecycle, with real-time doctor–patient chat and a multi-phase workflow engine
Peepskill: Social platform for 2,000+ users with feed aggregation, nested comments, and RBAC; redesigned feed pagination and added MySQL indexing- Royal Vision: Tourism booking platform with 25+ admin modules, multi-currency payments (CCAvenue), and an age-based pricing engine
- Led CI/CD with Docker + GCP deployments across all projects
Skills & Technologies
A comprehensive overview of my technical expertise across the full stack
Things I've shipped
A few production systems I designed, built, and ran end to end. Not demos.
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HealthSIA
A patient–therapist–surgeon communication and perioperative care platform with role-based dashboards and real-time chat.
Platform adopted across multiple clinics, improving patient engagement and care coordination
Reduced API response time by ~40%
Streamlined clinical workflows and operational efficiency
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Peepskill
A sports-focused social networking platform with role-based profiles, feeds, connections, and content moderation, serving 2,000+ early users.
Successful MVP adoption by 2,000+ early users
Reduced DB query load by ~35% through optimization
Enabled admins to moderate 100% of reported posts and users
More Projects
Engineering Journal
Deep dives on system design, performance optimization, and lessons from building production systems
When Something Breaks Across 20 Microservices, One Question Decides How Fast You Recover
It's 2 a.m. and your dashboard just says 'something is wrong.' A field guide to observability — logs, metrics, and traces — so outages stop being three-hour horror movies and become ninety-second fixes.
Case Study: Optimizing Database Queries for 40% Performance Gain
How we reduced API response times by 40% through systematic database optimization in a production healthcare platform serving 5,000+ users.
Building Production-Ready Real-Time Chat: Architecture & Trade-offs
Deep dive into architectural decisions, trade-offs, and lessons learned while building a scalable real-time chat system for healthcare.
Let's Work Together
I'm always interested in new opportunities and exciting projects. Let's discuss how we can build something amazing together.
Get in touch
I'm currently open to new opportunities and interesting projects. Whether you're looking for a full-time engineer, consultant, or just want to chat about technology, I'd love to hear from you.
Response Time
I typically respond to messages within 24 hours. For urgent matters, feel free to reach out via LinkedIn.