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Syed Agha Shah Haider

Available - Open to relocation & remote - EU, UK, AU, NZ, US, UAE, KSA, Gulf

I build the partsof a product thathave to keep working.

Full-stack engineer, three years deep in production work. Inventory that stays consistent across three marketplaces at once. Photo-to-macros nutrition analysis at ten thousand images. E-signature and remote notarisation with the legal procedure encoded properly. Seventy-plus applications shipped end to end - schema, implementation, deployment, and the 2am fix afterwards.

Now
Technical PM, Mi6 Global
Also
Contract engineering, since 2023
Based
Islamabad - PKT, UTC+5
Notice
Seven days
Local time
00:00
70+
Production applications shippedEnd to end, since 2023
3+
Years building for productionSaaS, e-commerce, health-tech
5.0
Client rating across engagements100% on-time delivery
42
Storefronts synced in productionOrbitSKU, 14 merchants

Selected work

Six systems written up properly - the constraint, the architecture, and what it cost to get right.

Full archive - 33 projects →

What I am useful for

A

Products that bill

Subscription infrastructure is the part of a SaaS that quietly decides whether it survives. I have built it repeatedly: tiered plans, metered access, webhook-driven state, and the self-serve dashboard that keeps support out of the loop.

  • Stripe subscriptions, tiered and usage-metered
  • Webhook pipelines with replay and idempotency
  • OAuth 2.0, JWT and session auth, RBAC
  • Self-serve customer dashboards
See WhatTheFood

B

Systems that talk to other systems

Most interesting problems live at the seam between two services that were never designed for each other. Marketplace APIs, payment providers, model vendors - the work is absorbing their disagreements so the product does not have to.

  • Shopify, eBay and Etsy marketplace integrations
  • Rate-limit budgeting and scheduled reconciliation
  • Adapter abstractions over inconsistent third-party APIs
  • Failure queues with per-error replay
See OrbitSKU

C

AI features that are honest

A model call is easy. Shipping one that admits uncertainty, costs what you predicted, and degrades gracefully when a provider goes down is the actual engineering - and it is what keeps users trusting the output.

  • OpenAI, Gemini, Perplexity, ElevenLabs integration
  • Multi-model routing with fallback
  • Credit-based access control and response caching
  • Client-side inference where privacy demands it
See Kinetic

Track record

  1. May 2026 -Current

    Technical Project Manager

    Mi6 Global

    Islamabad

    • Owns technical delivery for client software projects while staying in the codebase - reviewing pull requests, vetting architecture decisions and unblocking engineers on React, Next.js and Node.js work.
  2. Jun 2023 -Current

    Full-Stack Software Engineer

    Independent / Contract

    Remote - US, UK, EU, Middle East

    • Designed, built and deployed 70+ production applications end to end - architecture, schema, implementation, deployment and post-launch support.
  3. Mar - May 2026

    Technical Recruiter

    Vyro AI (ImagineArt)

    Islamabad

    • Screened and technically assessed full-stack, mobile and AI/ML candidates, and worked with engineering leads to define role requirements and evaluation rubrics.
  4. Jun 2025 - Mar 2026

    Full-Stack Developer

    RubrixCode

    Islamabad

    • Built and maintained client-facing and internal applications in React, Next.js and Node.js, owning features from database schema through to UI.

Contact

Something that has towork in production?

I take on contract engineering and full-time roles. Most useful first message: what you are building, what is currently in the way, and when you need it live.