October 17, 2026
Dear [Hiring manager's name],
I'm the engineer at Birchgate Analytics other teams come to before they design a new internal API, mostly because the last three times someone skipped that conversation, we ended up maintaining two ways to do the same thing. I'm applying to [Company name] because your engineering org is growing fast enough that this kind of cross-team technical judgment is about to matter a lot more than it did last year.
Leading the design of our internal API gateway consolidated 14 inconsistent authentication patterns into one, cutting new-service onboarding time from two weeks to two days. A separate initiative rewriting our billing-event pipeline in Go reduced duplicate-event bugs, which had caused three customer-facing billing discrepancies the previous year, to zero in the twelve months since.
I write Go and TypeScript depending on the layer, design most of our internal RFCs before a cross-team project starts, and run the biweekly architecture review that catches costly decisions before they ship. I mentor three engineers across two teams and wrote the onboarding guide new hires now use in their first week.
I'd welcome a conversation about the platform decisions [Company name] is facing as the team grows and where someone who already thinks in terms of cross-team consequences could help. I'm available for an interview at your convenience. Thank you for your time.
Sincerely,
Marcus Thompson