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.
Physiatrist- Inpatient Rehabilitation, Sandwich, MA
Company: Mass General Brigham
Location: Sandwich, Massachusetts
Posted Oct 04, 2025
Gastroenterology Hospitalist, Weymouth, MA
Company: Mass General Brigham
Location: Weymouth, Massachusetts
Posted Sep 04, 2025
Internal Medicine Physician, Belchertown, MA
Company: Mass General Brigham
Location: Belchertown, Massachusetts
Posted Aug 31, 2025
Internal Medicine Physician, Dover, NH
Company: Mass General Brigham
Location: Dover, New Hampshire
Posted Aug 31, 2025
Plastic Surgeon, Florence, MA
Company: Mass General Brigham
Location: Northampton, Massachusetts
Posted Oct 05, 2025
Machining Supervisor
Company: Mass Precision Inc
Location: San Jose, CA
Posted Sep 02, 2025
High school diploma or equivalent; technical certification or associate degree in a related field preferred. Oversee the maintenance and repair of fabrication…
Cleared Security Officer
Company: Securitas Critical Infrastructure Services
Location: San Diego, CA
Posted Sep 04, 2025
Must be able to meet and continue to meet any applicable state, county and municipal licensing requirements for Security Officers.
Family Medicine Physicians, North of Boston, MA
Company: Mass General Brigham
Location: Beverly, Marblehead, Saugus and Swampscott, MA
Posted Oct 05, 2025
Pulmonologist Opportunity – Live, Work, and Thrive in Northern Virginia (Outpatient Pulmonary Practice with sleep optional, No Call - No Weekend)
Company: NOVA Pulmonary Critical Care and Sleep Associates
Location: Northern Virginia
Posted Sep 05, 2025
Pediatric Nocturnist Hospitalist, Northampton, MA
Company: Mass General Brigham
Location: Northampton, Massachusetts
Posted Aug 31, 2025
Full-Time Urgent Care Physician Opportunity - South of Boston
Company: Mass General Brigham
Location: South Weymouth, Massachusetts
Posted Sep 05, 2025
Endocrinology, Salem, MA
Company: Mass General Brigham
Location: Salem, Massachusetts
Posted Sep 01, 2025