Software Engineer Cover Letter Example

I’m applying for the Backend Engineer role on your payments platform team. For the past three years I’ve built backend services for a payments product in Pune. Most recently I split our settlement batch job out of a shared monolith database into a Go service, and the nightly run went from about three hours to forty minutes.

Your job post asks for someone who is comfortable owning services in production. I’m on a weekly on-call rotation for six services and have written nine runbooks. After a duplicate-refund incident, I wrote the design doc for idempotency keys on our refund API, led the review and shipped it. We have not had a duplicate refund since.

I’m also careful about how changes land. Before a payroll refactor at my previous job, I raised the module’s test coverage from 35% to 70%, and those tests caught eleven regressions in review. I review about fifteen pull requests a week and enjoy helping newer engineers get their first changes to production.

Your engineering blog post on moving reconciliation to event streams is what made me apply; I’d like to work on that kind of problem with a team that writes its decisions down. I’d be glad to walk you through the settlement migration in more detail.