Ledgerline
A double-entry core small enough to audit in an afternoon.
TypeScriptPostgresFastify
PRODUCT ENGINEER . AVAILABLE FROM MARCH . REMOTE OR HYBRID
I turn half-formed ideas into things people can use on Monday.
Nikhil Varma product engineer . eleven years across payments, logistics and developer tools. I like the awkward middle of a project, where the design meets the database.
What I am actually good at
Ranked against the work, not against the industry. Every bar says what the number is drawn from.
TypeScript and Node 92%
Eleven years, four production platforms
Go 78%
Three services still running unattended
Postgres and data modelling 85%
Schema design and migrations under load
Design systems in the browser 70%
Shipped two, maintained one for four years
Facilitation and technical writing 88%
RFCs, incident reviews, mentoring
Selected work
Six projects, and what changed because of them.
How the work actually went
The commit history of one repository. Point it at a public repository, or leave these entries in place.
- 2026-07-18
Move settlement off the nightly batch
Nikhil VarmaThe last job that had to finish before anyone could open the app.
- 2026-05-02
Make reconciliation idempotent
Nikhil VarmaReruns stopped being frightening.
- 2026-02-11
Split the ledger writer from the API
Nikhil Varma - 2025-11-27
Add the first property-based tests
Priya NairFound two rounding bugs in an afternoon.
Where this all happened
What working with me is like
He found the actual problem in the first week, and it was not the one we hired for.
Writes the clearest incident reviews I have read. People volunteer for them now.
Left the codebase easier to join than he found it, which is the whole job.
Conference talk
BSc Computer Science
University of Pune . 2014
AWS Solutions Architect
Credential ID KP-88421
Conference talk
Ledgers Without Tears . 2025
Working on something awkward?
Tell me the constraint you cannot move and the thing that must not break. That is usually the interesting part.