AppNeta (htts://appneta.com) | Boston MA, Providence RI, Vancouver BC | REDACTED_EMAIL
AppNeta provides a SaaS platform for monitoring application performance.  We get to make software for people like us (engineers), that focuses on optimization and performance, by analyzing and visualizing huge amounts of data.  
It's a lot of fun--and our customers (some of whom are on this thread) love it too.
We're growing quickly which means there are a number of openings right now in development, QA, engineering management, technical support, and technical sales: <a href="
Ask HN: Who is hiring? (September 2015)