Jobs at Critical Mass
Critical Mass is a San Francisco‑based data‑science powerhouse that builds real‑time analytics engines for the financial sector. Its flagship product, MassFlow, processes millions of transactions per second using a microservices architecture on Kubernetes. The company has earned recognition for its open‑source contributions to the Apache Arrow community and for securing a Series C round that valued it at over $1 billion.
Critical Mass hires full‑stack engineers, data scientists, DevOps specialists, product managers and security analysts. New hires expect rigorous peer‑review coding, cross‑functional sprint ceremonies, and a culture of continuous learning that includes quarterly hackathons and paid certifications. The company offers a remote‑first policy, a 100‑hour annual training budget, and a transparent equity grant program.
Job Transparency’s listings provide Critical Mass candidates with real‑time salary ranges, interview difficulty ratings and employee sentiment scores. By comparing the disclosed compensation against the market benchmark and reading recent reviews, applicants can negotiate better offers and choose roles that match their career goals.
Endocrinologist, Medford, MA
Company: Mass General Brigham
Location: Medford, Massachusetts
Posted Oct 06, 2025
Gastroenterologist, Florence, MA
Company: Mass General Brigham
Location: Northampton, Massachusetts
Posted Oct 05, 2025
Part-Time Urgent Care Supervising Physician, Andover, MA
Company: Mass General Brigham
Location: Andover, Massachusetts
Posted Oct 12, 2025
Primary Care Physician, Haverhill, MA
Company: Mass General Brigham
Location: Haverhill, Massachusetts
Posted Oct 07, 2025
Geriatrician, Northampton, MA
Company: Mass General Brigham
Location: Northampton, Massachusetts
Posted Oct 24, 2025
Journeyman Plumber
Company: Critical Plumbing and Electrical of Texas LLC.
Location: San Antonio, TX
Posted Oct 07, 2025
Commercial construction, must have a Driver's License, must have your own tools. 2 year's experience in commercial construction, must have a Driver's License,…
Medical Director, Primary Care, Watertown, MA
Company: Mass General Brigham
Location: Watertown, Massachusetts
Posted Oct 07, 2025
Primary Care Physician, Westwood, MA
Company: Mass General Brigham
Location: Westwood, Massachusetts
Posted Oct 23, 2025
Family Medicine Physician, Walpole, MA
Company: Mass General Brigham
Location: Walpole, Massachusetts
Posted Oct 25, 2025
Cleared Security Officer
Company: Securitas Critical Infrastructure Services
Location: San Jose, CA
Posted Oct 08, 2025
Must be able to meet and continue to meet any applicable state, county and municipal licensing requirements for Security Officers. Sun. 6am to 2pm and Mon.
Internal Medicine Physician, Needham, MA
Company: Mass General Brigham
Location: Needham, Massachusetts
Posted Oct 23, 2025
Per Diem Hospital Medicine Physician, Dover, NH
Company: Mass General Brigham
Location: Dover, Massachusetts
Posted Oct 07, 2025