Correct under load beats clever.
Data migrations that don't lose rows. Pipelines that resume where they failed. Interfaces that stay fast at a hundred thousand records.
Work
Systems running in production.
Salesforce → DealerIQ migration
Serverless ETL that moved a dealership’s entire Salesforce estate
- 350k+
- records migrated
- 500+
- field mappings
- 44s
- regression suite, 850 records
Three decoupled stages. A failed run resumes from the last checkpoint rather than restarting a multi-gigabyte job. Problem
Multi-gigabyte migrations fail partway through, and restarting from zero is not an option when the source is a live customer CRM.
Built
Extract-and-join writes checkpoints as it goes, so a failed run resumes from the last good one. Step Functions orchestrates, Lambda executes, S3 holds intermediate state.
Designed and built the pipeline — at Hatzs Dimensions · TypeScript · AWS Lambda · Step Functions · S3 · Node.js · PostgreSQL
DealerIQ
dealeriq.ai ↗Dealership platform automating the full customer lifecycle
- 4
- manual handoffs removed
- 3
- modules led
Problem
A vehicle deal crossed four manual handoffs between separate systems. Every handoff was a place for it to stall silently.
Built
Event-driven jobs wiring the workflow to lender APIs, service scheduling and inventory. Plus voice and chat on Twilio and ElevenLabs, sharing conversation memory so a call resumes where the chat ended.
Team lead, four engineers — built at Hatzs Dimensions · TypeScript · React · Node.js · PostgreSQL · AWS · Twilio · ElevenLabs
Befer
befer.co ↗AI-assisted CRM for field service businesses
- 9
- businesses onboarded
- 4,000+
- service jobs in production
Problem
Technicians write jobs up from memory at the end of a shift, so parts, hours and follow-ups are lost between the van and the invoice.
Built
An intake assistant that turns a voice note into a structured job record — parts, labour hours, customer details, recommended follow-ups.
Founding engineer, built end to end — at Hatzs Dimensions · React · TypeScript · Node.js · PostgreSQL · OpenAI API · AWS
Side Projects
Built for myself.
intent-engineWork in progress
View repository ↗Niche and city in, enriched lead list out
Stages run as background jobs on Celery + Redis, with per-user history. FastAPI · Next.js · Playwright · Celery · Redis
CareerPulseWork in progress
View live demo ↗Job application tracker, minus the spreadsheet
React · TypeScript · MongoDB
horology-api
View live demo ↗Any GitHub profile as an interactive 3D mechanical watch
Next.js · React Three Fiber · Three.js · Zustand · GitHub API
Open Source
Fixed prototype-property false positives in no-unstable-deps
The eslint-plugin-query rule flagged inherited Object.prototype members as unstable dependencies, so valid code failed lint. +57/-3 across three files.
View the pull request ↗
Approach
How I work.
Most of my work is the unglamorous middle: migrations that have to not lose rows, pipelines that resume where they failed, and interfaces that stay fast once the table has a hundred thousand records in it.
- 01 / 04
Before the code
Design first
Write the design document, review the architecture, then open the editor. Large features rarely need rewriting when the disagreement happens on paper.
Made design docs and architecture reviews standard practice at Hatzs.
- 02 / 04
While it runs
Build something you can watch
A background job that fails silently is worse than one that crashes loudly. Logs, dashboards and alerts ship with the feature, not after the first incident.
Alerting that caught webhook failures and stalled jobs before customers noticed.
- 03 / 04
When it breaks
Fix the cause
A retry around a flaky call buys a week. Finding out why it is flaky buys the rest of the year.
Deploys went 38min to 11min by fixing Docker layer caching, not by adding machines.
- 04 / 04
After you leave
Write for the next engineer
Code is read far more often than written, usually by someone with less context than the author had. That person is frequently me, six months later.
PR standards still in use across the team; three engineers mentored to first deploy.
Shipping professionally since June 2023, and finishing a CS degree alongside it — which mostly means I've written a lot of production code between lectures.
- Based in
- Lahore, Pakistan
- US, UK, EU and Gulf teams.
- Education
- Lahore Garrison University
- BS Computer Science — in progress · Expected June 2026
Experience
DealerIQ and Befer are products built at Hatzs Dimensions, not separate employers.
- Feb 2025 — PresentCurrent
Lead of Product Operations / Full Stack Engineer
Hatzs Dimensions·Lahore
Player-coach across three SaaS products. Led DealerIQ delivery across the Sales, Acquisition and Service modules with a team of four. Release cycle 3 weeks to 5 days via parallel CI and per-branch previews.
- Oct 2023 — Jan 2025
Software Engineer
Hatzs Dimensions·Lahore
REST APIs across three SaaS products, including founding engineer on Befer. OAuth 2.0 SSO. Deployment time 38min to 11min.
- Jun 2023 — Sep 2023
Frontend Engineer
Hatzs Dimensions·Lahore
First engineering role. 20+ production screens, page load 4.1s to 1.6s, a 28-component shared library.
Stack
- Languages
- TypeScript · JavaScript · Python · SQL
- Backend
- Node.js · REST APIs · Event-driven architecture · Job queues · LLM & voice AI
- Frontend
- React · Next.js · Tailwind CSS
- Data
- PostgreSQL · Schema design & migrations
- Infra
- AWS (Lambda, S3, Step Functions) · Docker · CI/CD · Logging & alerting
Client Builds
Freelance and agency sites8 live · WordPress, Shopify, Webflow
Contact
Let’s talk.
Looking for remote full stack work, employed or contract. I've worked with international teams since 2023 — no relocation or sponsorship needed.
- wasaya670@gmail.com
- abdul-wasay01
- GitHub
- wasaybuilds
- CV
- View PDF