Willing to relocate: Yes (UK, Europe, US; with sponsorship)

Technologies: Python, TypeScript, Go, PostgreSQL, Redis, GCP, FastAPI, Temporal, LangGraph

Email: munimzafar100@gmail.com

I was the second engineer at an a16z-backed fintech and owned the payment stack for two years. That meant ACH, wire, check, and card rails, a double-entry PostgreSQL ledger, and webhook pipelines designed to stay correct under duplicate delivery and out-of-order events. The platform processed over $150M across 1,800+ customers with zero overdrafts and zero duplicate payment entries. I also ran the migration from Firebase to PostgreSQL, which took ten months and kept every customer live throughout the cutover.

The most interesting bug I ever debugged was a race condition in the ACH settlement logic that only appeared when two payments cleared within about 20 milliseconds of each other under specific account nesting conditions. It took three two to reproduce reliably in staging. The actual fix was a single predicate added to a SELECT FOR UPDATE query.

After leaving I built a SOC 2 audit agent in LangGraph that covers two financial controls end to end and cut tool calls from 38 to 5 by front-loading deterministic checks before touching the LLM at all.

I am currently looking for founding engineer or backend roles. Open to both remote and on-site roles.

Willing to relocate: Yes (UK, Europe, US; with sponsorship)

Technologies: Python, TypeScript, Go, PostgreSQL, Redis, GCP, FastAPI, Temporal, LangGraph

Email: munimzafar100@gmail.com

I was the second engineer at an a16z-backed fintech and owned the payment stack for two years. That meant ACH, wire, check, and card rails, a double-entry PostgreSQL ledger, and webhook pipelines designed to stay correct under duplicate delivery and out-of-order events. The platform processed over $150M across 1,800+ customers with zero overdrafts and zero duplicate payment entries. I also ran the migration from Firebase to PostgreSQL, which took ten months and kept every customer live throughout the cutover.

The most interesting bug I ever debugged was a race condition in the ACH settlement logic that only appeared when two payments cleared within about 20 milliseconds of each other under specific account nesting conditions. It took three two to reproduce reliably in staging. The actual fix was a single predicate added to a SELECT FOR UPDATE query.

After leaving I built a SOC 2 audit agent in LangGraph that covers two financial controls end to end and cut tool calls from 38 to 5 by front-loading deterministic checks before touching the LLM at all.

I am currently looking for founding engineer or backend roles. Open to both remote and on-site roles.

Asking because on the careers page, I only see Staff/Principal/Tech Lead roles.

I am very product obsessed. I care a lot about building the right thing and building it the right way, not just writing cool code. I have a pretty strong sense for balancing speed vs code quality. I know when to just ship and when something needs to be done properly.

I would really love the chance to speak with you. You should be able to match my username or my HN profile’s about section to the application I just submitted.

Really looking forward to this one.

Additionally, do you offer visa sponsorship for Prague?

This position is the dream role for me.

Would it be possible to directly hop on a call? Can share my resume with you in private.

Edit: Oops, I clicked on valet, not engineering. Emailing you now

Location: Pakistan Remote: Open to remote but prefer on-site Willing to relocate: Yes Technologies: Python (FastAPI), TypeScript, PostgreSQL, Docker, GCP Resume: https://drive.google.com/file/d/1049E2qLMjYZjOX-NU8oZ6otCTNK... Email: munimzafar100@gmail.com

  Location: Islamabad, Pakistan
  Remote: Yes
  Willing to relocate: Yes (need work visa sponsorship)
  Technologies: Python, Go, TypeScript, React.js/Next.js, PostgreSQL, Agentic AI
  Resume/CV: https://drive.google.com/file/d/1049E2qLMjYZjOX-NU8oZ6otCTNKkpYQ9/
  GitHub: https://github.com/munimdev
  Email: munimzafar100@gmail.com

I am looking for a Backend Engineer or Founding Engineer role at a fast-moving startup. I want to own core infrastructure and ship reliable code fast. Let's build.