Jobs at Critical Mass

Positions 735,996

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.

Associate Director of Search, SEO

Company: Critical Mass

Location: Nashville, TN

Posted Sep 13, 2024

The job posting is for an Associate Director of SEO position at Critical Mass, a company that values diversity and inclusion. The role involves leading a team of search marketers, developing SEO strategies, and staying up-to-date with the latest digital trends.

Senior Developer Back End Developer (AEM)

Company: Critical Mass

Location: Other US Location

Posted Sep 14, 2024

The job posting is for a Senior Back End Developer position at Critical Mass, a company that values diversity and inclusion. The job requires experience with Adobe AEM, Java, and other technologies, as well as strong coding standards and the ability to work in a team. The company offers competitive benefits, flexible work arrangements, and opportunities for professional growth.

Network Operations Centre Operator

Company: Salute Mission Critical

Location: Other US Location

Posted Sep 16, 2024

Salute is a leader in delivering global data center services, with a team-oriented culture and a strong commitment to safety and responsibility. The company is looking for a Network Operations Center Operator to join their team, with responsibilities including monitoring technical installations, managing evacuations, and providing incident management capabilities.

Senior Developer Back End Developer (AEM)

Company: Critical Mass

Location: South Bay

Posted Sep 14, 2024

The job posting is for a Senior Back End Developer position at Critical Mass, a company that values diversity and inclusion. The job requires experience with Adobe AEM, Java, and other technologies, as well as strong coding standards and the ability to work in a team. The company offers competitive benefits, flexible work arrangements, and opportunities for professional growth.

3D Product Engineer, Design, Future Opportunities

Company: Critical Mass

Location: Other US Location

Posted Sep 14, 2024

The job posting is for a 3D Artist position at Critical Mass, a company that values diversity and inclusion. The job requires experience in 3D software and Unreal Engine, and offers competitive benefits and a flexible work model.

Senior Designer

Company: Critical Mass

Location: Other US Location

Posted Sep 12, 2024

The Senior Designer is responsible for executing complex visual design deliverables and leading the implementation of design solutions for marketing and digital experiences. The role requires strong design skills, collaboration, and communication.

Freelance User Experience Director, Product

Company: Critical Mass

Location: New York City, NY

Posted Sep 15, 2024

The job description is for a UX Director position at Critical Mass, a company that values diversity and inclusion. The role involves leading UX design, collaborating with teams, and communicating with stakeholders. The ideal candidate has 24 years of experience in UX leadership, effective communication skills, and a deep understanding of user experience.

Freelance User Experience Director, Product

Company: Critical Mass

Location: Other US Location

Posted Sep 15, 2024

The job description is for a UX Director position at Critical Mass, a company that values diversity and inclusion. The role involves leading UX design, providing guidance to team members, and managing projects. The ideal candidate has 24 years of experience in UX leadership, effective communication skills, and a deep understanding of user experience.

Freelance Copywriter

Company: Critical Mass

Location: Los Angeles, CA

Posted Sep 12, 2024

The job posting is for a freelance Copywriter position at Critical Mass, a company that values diversity and inclusion. The role involves partnering with designers and creative directors to bring concepts to life, and working on one of the biggest and most famous brands in the world. The company offers a competitive salary range of $60-$70 USD and a range of benefits.

Product Engineer, Motion Design, Future Opportunities

Company: Critical Mass

Location: Other US Location

Posted Sep 14, 2024

The job posting is for a Product Engineer Motion Design position at ArtBot, a company that values diversity and inclusion. The role involves creating complex animations, collaborating with a team, and working in a fast-paced environment. The company offers competitive benefits, flexible work arrangements, and opportunities for growth and development.

Group Creative Director, Future Opportunity

Company: Critical Mass

Location: Other US Location

Posted Sep 16, 2024

The job description is looking for a Group Creative Director with experience in creative direction, writing, and digital solutions. The role requires a strong creative voice, ability to lead teams, and a drive to stay on top of cultural trends and technology developments. The company offers competitive benefits, diversity and inclusion initiatives, and a commitment to fostering a positive work environment.

Safety Representative

Company: Salute Mission Critical

Location: Other US Location

Posted Sep 16, 2024

Salute is seeking a dynamic and experienced Data Center Safety Representative to join their team. The job involves maintaining an organizational safety strategy, identifying areas of improvement, and providing direction and guidance to leadership teams on safety best practices.

Frequently Asked Questions

What is it like to work at Critical Mass?
Working at Critical Mass means joining a collaborative, data‑driven environment that values experimentation. You’ll participate in daily stand‑ups, bi‑weekly hackathons, and monthly tech talks. The team embraces remote‑first flexibility, but also meets weekly in the San Francisco office for design sprints. Employees receive a 100‑hour training stipend and can earn equity through a quarterly grant schedule. Open‑source contributions are encouraged and often recognized in performance reviews.
What types of positions does Critical Mass offer?
Critical Mass has openings across engineering, product, and operations. Popular roles include Senior Backend Engineer (Python/Golang), Machine Learning Engineer, Cloud Infrastructure Architect, Product Manager (Analytics), and Security Analyst (Threat Intelligence). The company also hires Data Engineers, Front‑end Engineers, UX Researchers, and DevOps Specialists. Each role offers a hybrid work model and a competitive benefits package.
How can I stand out as an applicant for Critical Mass?
Showcase a portfolio that demonstrates real‑time data processing or distributed system design. Contribute to the company’s open‑source projects on GitHub or publish a blog post about a relevant tech topic. Provide metrics in your resume—e.g., reduced latency by 30% or improved throughput by 50%. Highlight experience with Kubernetes, Apache Arrow, or large‑scale analytics. Prepare for the interview by mastering system design, coding challenges, and aligning your answers with the company’s mission of delivering fast, trustworthy insights to financial clients.

Other Companies Hiring

© 2026 Job Transparency. All rights reserved.