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.

Copywriter

Company: Critical Mass

Location: Other US Location

Posted Aug 27, 2024

The job description is for a copywriter position at Critical Mass, a company that values diversity and inclusion. The role requires collaboration with design, UX, and strategy teams to create digital content. The company offers training, mentorship, and employee experience to ensure long-term success.

Senior Developer, Drupal

Company: Critical Mass

Location: South Bay

Posted Aug 20, 2024

The job posting is for a Senior FullStack Developer position at Critical Mass, a company committed to diversity and inclusion. The job requires proficiency in various technologies, including Drupal, and offers competitive benefits and a supportive work environment.

Project Manager

Company: Critical Mass

Location: South Bay

Posted Aug 24, 2024

The job posting is for a Digital Project Manager position at Critical Mass, a marketing agency. The job requires experience in digital marketing, project management, and collaboration. The company offers competitive compensation and benefits, as well as a diverse and inclusive work environment.

Copywriter

Company: Critical Mass

Location: South Bay

Posted Aug 27, 2024

The job description is for a copywriter position at Critical Mass, a digital agency. The role involves leading concept development, participating in strategic brainstorming, and creating on-brand user-friendly experiences. The job requires a strong understanding of marketing, digital trends, and technologies, as well as the ability to work on multiple projects simultaneously.

Freelance Copywriter

Company: Critical Mass

Location: Other US Location

Posted Aug 27, 2024

The job description is for a freelance copywriter who will lead concept development, participate in strategic brainstorming, and create on-brand user-friendly experiences. The company, Critical Mass, is committed to diversity and inclusion and provides training and mentorship to its employees.

Junior Data Engineer

Company: Critical Mass

Location: South Bay

Posted Aug 20, 2024

The job posting is looking for a Data Engineer to join the Marketing Science team at Critical Mass. The role involves automating manual processes, defining data extraction solutions, and working closely with the team to understand business context. The company offers competitive benefits, diversity and inclusion initiatives, and a commitment to employee development.

Senior Developer, Vue.js

Company: Critical Mass

Location: South Bay

Posted Aug 19, 2024

The Critical Mass technology team is looking for a web developer to join their team. The role involves collaborating with design and UX, mentoring other frontend developers, and ensuring compatibility of code across devices. The team culture thrives on collaboration and focused time, and they use screenshares and Slack for communication.

Project Manager

Company: Critical Mass

Location: Other US Location

Posted Aug 24, 2024

The job posting is for a Digital Project Manager position at Critical Mass, a marketing agency. The job requires experience in digital marketing, project management, and team collaboration. The company offers competitive compensation and benefits, as well as a diverse and inclusive work environment.

Senior Campaign Engineering

Company: Critical Mass

Location: Other US Location

Posted Aug 19, 2024

The job posting is for a Senior Campaign Manager position at Critical Mass, a company that values diversity and inclusion. The role involves designing and writing code, performing code reviews, and building relationships with clients. The company offers competitive benefits and a supportive work environment.

Art Director

Company: Critical Mass

Location: South Bay

Posted Aug 23, 2024

The job description is for a Digital Art Director position at Critical Mass, a company that values diversity and inclusion. The role involves leading a team of designers, copywriters, and other creatives, and requires strong digital design portfolio, experience leading a team, and ability to work on multiple projects simultaneously.

Commercial Property Manager (Onsite)

Company: Salute Mission Critical

Location: Atlanta, GA

Posted Aug 13, 2024

Salute is searching for a Commercial Property Manager to oversee the day-to-day upkeep, operations, and enhancements of a 500,000sf specialty facility. The ideal candidate is detail-oriented, dedicated to continuous improvement, and passionate about healthy workplace dynamics.

Product Engineer - 3D, Contract - Unreal Engine

Company: Critical Mass

Location: Other US Location

Posted Aug 21, 2024

The job description is for a Lead 3D Artist role at Critical Mass, a company that values diversity and inclusion. The role involves supervising the 3D production pipeline, conducting technical and quality audits, and collaborating with the creative team. The company offers competitive benefits, internal learning and development programs, and a diverse and inclusive work environment.

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.

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