AI engineer · full-stack developer

I build AI systems and web apps that hold up in production.

For US and European teams: Claude API integrations, RAG and AI agents, full-stack builds on Next.js and Supabase, and takeovers of apps that were built fast and now have to hold real users, real data and real payments.

Tell me about your project See the work
5 years shipping production software Top Rated Plus on Upwork · 100% Job Success US business hours overlap
What I do

Three ways I usually help

AI integration & automation

Put AI to work inside what you already run

Claude or OpenAI wired into your product, CRM, store or internal tools, where it genuinely helps.

  • AI agents and automated workflows
  • RAG assistants that answer from your own documents
  • n8n, Make and API pipelines with alerts and fallbacks
Full-stack builds

Production apps, from data model to deploy

SaaS products, portals, dashboards and internal tools, built to be secure and easy to change later.

  • Next.js, React, TypeScript
  • Supabase / Postgres with row-level security
  • Stripe payments and webhooks
Review & rescue

Make an AI-built app safe to launch

Apps made with Lovable, Bolt, Cursor or Claude Code get a fast start. I find what will break with real users and fix it.

  • Security review with proof for every finding
  • Auth, roles, data access and payment checks
  • Takeover, fixes and handover
Selected work

Recent projects

Client names are withheld; details are shared on a call.

AI · US AI SaaS company

AI support investigation system

Takes enterprise support tickets from alert to likely root cause by combining workflow history, telemetry, Slack and the internal knowledge base with Claude's reasoning. Started as a hackathon prototype; now used daily by the engineering team.

Claude APITemporalDatadogSlackNotion
AI · US e-commerce brand

AI social publishing pipeline

Claude writes on-brand captions and Python services publish 18 posts a day across Instagram, Facebook and Pinterest, with a Slack approval step. Live for more than 9 months, with API calls cut by 99.6% through caching.

Claude APIPythonMeta & Pinterest APIsSlack
SaaS · US contracting business

Multi-role referral and commission platform

Partner portal, admin CRM and marketing site in one system. Three roles enforced by row-level security in the database, Stripe commission payments by webhook, and a 6-stage pipeline from inquiry to paid. Live across 5 US states.

Next.jsSupabaseStripeTypeScript
Enterprise · regulated

Background-screening platform engineering

Feature delivery and production investigation across dozens of independent services in an FCRA-regulated environment: event-driven workflows, long-running orchestration and per-service databases on Kubernetes.

KotlinNode.jsKafkaCamundaGCP
EdTech · US universities

3D campus and indoor wayfinding

A navigable 3D campus map with AI-generated building models and natural-language location search, plus a multi-floor indoor router: A* pathfinding across 214 rooms and 3 floors, with 77 automated tests in CI.

ReactMapLibreThree.jsGemini
Fintech · data · healthcare

Backend and data systems

A portfolio benchmarking service built to GIPS rules with Plaid and market data, workflow automation for US health-insurance operations, and clinical data pipelines on Databricks.

Spring BootMongoDBPlaidDatabricks

Also: 100+ WordPress and WooCommerce sites, custom plugins, Shopify storefront work, and hacked-site cleanup and hardening.

How I work

Clear scope, safe changes, no surprises

  1. Understand firstThe business, the workflows and what's already running, before any code.
  2. Written scopeFixed milestones or a clear hourly plan, agreed up front.
  3. Safe deliveryBackups, staging and tests before anything touches production.
  4. Clean handoverDocumentation and a recorded walkthrough, so your team can own it.
Stack

Tools I use in production

AI

Claude API, OpenAI, Gemini, RAG, AI agents, MCP, n8n

Frontend

Next.js, React, TypeScript, Tailwind

Backend

Node.js, Python, Java / Kotlin Spring Boot, Kafka

Data & payments

Supabase, PostgreSQL, MySQL, MongoDB, Stripe

Commerce & CMS

WordPress, WooCommerce, Shopify

Infra

Vercel, Cloudflare, GCP, Docker, CI/CD

About

I'm Umar Asghar, a senior full-stack and AI engineer with five years of production work for companies in the US, Europe and Asia, from enterprise platforms to startup MVPs.

I don't add AI to everything. Where a scheduled job and a database query will do, that's what you'll get, because it's cheaper and easier to audit. Where AI genuinely helps, I build it to stay reliable as models and providers change.

Based in Pakistan and working US business hours. My family also runs a manufacturing export business, so I build with operations and real customers in mind, not just code.

Tell me about your project

A few lines on what you're building or what's broken, and your timeline. I reply within one business day.