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.
Otolaryngologist, Somersworth, NH
Company: Mass General Brigham
Location: Somersworth, New Hampshire
Posted Jul 21, 2025
Sales Support Assistant (Galleria Area)
Company: ACS Time Critical
Location: Houston, TX
Posted Aug 07, 2025
Review and allocation of incoming invoices from our suppliers (couriers, airlines, handling agents, etc.). Archiving and filing of order-related documents.
PREA Manager (Prison Rape Elimination Act)
Company: Critical Response Strategies
Location: Jacksonville, FL
Posted Aug 07, 2025
Serves as the primary authority on PREA-related matters, driving policy development, training, data analysis, and investigative oversight in alignment with…
Trauma and Acute Care Surgeon, Dover, NH
Company: Mass General Brigham
Location: Dover, New Hampshire
Posted Jul 20, 2025
Primary Care Physician, Medford, MA
Company: Mass General Brigham
Location: Medford, Massachusetts
Posted Jul 20, 2025
Foot & Ankle Orthopaedic Surgeon, Somersworth, NH
Company: Mass General Brigham
Location: Somersworth, New Hampshire
Posted Aug 03, 2025
Pulmonary/Sleep Medicine Specialist, Northampton/Florence, MA
Company: Mass General Brigham
Location: Northampton, Massachusetts
Posted Jul 28, 2025
PREA Manager (Prison Rape Elimination Act)
Company: Critical Response Strategies
Location: New York, NY
Posted Aug 07, 2025
Serves as the primary authority on PREA-related matters, driving policy development, training, data analysis, and investigative oversight in alignment with…
Cleared Security Officer
Company: Securitas Critical Infrastructure Services
Location: San Diego, CA
Posted Jul 23, 2025
Must be able to meet and continue to meet any applicable state, county and municipal licensing requirements for Security Officers.
Non-Invasive Cardiologist, Lawrence, MA
Company: Mass General Brigham
Location: Lawrence, Massachusetts
Posted Aug 03, 2025
Board Certified/Board Eligible Pulmonary and Critical Care Physician
Company: Pulmonary and Critical Care Consultants, Inc.
Location: Dayton, Ohio
Posted Jul 28, 2025