Dear Ms. Chen,
I am applying for the Backend Engineer role at Northwind. Your posting asks for someone who can keep a high-traffic API reliable while still shipping weekly — that is the work I have done for the last five years.
At Helio I owned the payments API that now handles about 12 million requests a day. We cut p95 latency from 420ms to 110ms by moving hot paths onto a read replica and adding request coalescing, which dropped timeout-related support tickets by roughly 40%.
I would welcome a conversation about how that reliability work maps to Northwind's checkout rewrite. Thank you for your time.
Why it works: Opens with the exact job title, one proof with scale, and a close that names the employer's project. No biography.