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.

Lead Front End Developer (React)

Company: Critical Mass

Location: South Bay

Posted Sep 24, 2024

The job posting is for a FrontEnd Technology Lead position at Critical Mass, a company that values diversity and inclusion. The job requires advanced English proficiency, experience with FrontEnd technologies, and strong leadership skills. The company offers competitive benefits and a flexible work environment.

Campaign Engineer

Company: Critical Mass

Location: Other US Location

Posted Sep 21, 2024

The job posting is for an Email Campaign Manager position at Critical Mass, a company that values diversity and inclusion. The job requires experience in campaign management, marketing operations, and technical skills. The company offers competitive compensation and benefits packages, as well as opportunities for growth and development.

Change Management Specialist

Company: Salute Mission Critical

Location: Other US Location

Posted Sep 26, 2024

Salute is seeking a Change Management Specialist to join their team, responsible for leading and coordinating organizational change initiatives, developing and implementing change processes, and ensuring successful completion and acceptance of all procedures.

Account Director - ArtBot, Contract

Company: Critical Mass

Location: New York City, NY

Posted Sep 25, 2024

The job posting is for an Account Director position at Critical Mass, a company that values diversity and inclusion. The role involves leading a portfolio of clients, managing projects, and developing account managers. The company offers competitive benefits, flexible work arrangements, and opportunities for growth and development.

Campaign Engineer

Company: Critical Mass

Location: South Bay

Posted Sep 24, 2024

The job posting is for an Email Campaign Manager at Critical Mass, a company that values diversity and inclusion. The role involves designing and writing code, performing code reviews, and working with clients and teams. The company offers competitive compensation and benefits packages, as well as opportunities for growth and development.

Senior Developer, Front End

Company: Critical Mass

Location: Other US Location

Posted Sep 25, 2024

The job posting is for a web developer position at Critical Mass, an experience design agency. The team is looking for an inspired and motivated developer to join their team. The role involves collaborating with design and UX, mentoring other frontend developers, and ensuring compatibility of code across devices and viewport sizes.

Senior Email Developer

Company: Critical Mass

Location: Other US Location

Posted Sep 27, 2024

The job posting is for a Senior Email Developer position at Critical Mass, a company that values diversity and inclusion. The job requires experience in HTML, CSS, and email development, as well as knowledge of ADA compliance and pixel perfect implementation. The company offers competitive benefits and a supportive work environment.

3D Lead - Unreal Engine

Company: Critical Mass

Location: Other US Location

Posted Sep 25, 2024

The role involves supervising the 3D production pipeline, requiring expertise in various 3D platforms and Unreal Engine. The Lead 3D Artist must navigate technical complexities and collaborate with the creative team to deliver exceptional photorealistic high-end cinematic renderings.

Product Engineer Director, Content (Contract role)

Company: Critical Mass

Location: Other US Location

Posted Sep 25, 2024

The job posting is for a Product Engineer Director at ArtBot, requiring a leader with 58 years of Motion Design experience, proficiency in After Effects and Premiere, and strong communication skills. The company offers competitive benefits, flexible work arrangements, and a commitment to diversity and inclusion.

Senior Marketing Science Analyst

Company: Critical Mass

Location: Chicago, IL

Posted Sep 28, 2024

The text describes a job posting for a Marketing Science Senior Analyst position at Critical Mass. The job requires strong analytical skills, attention to detail, and excellent communication and collaboration skills. The company is committed to diversity and inclusion and provides equal opportunities for all candidates.

Customer Success Manager

Company: Salute Mission Critical

Location: Other US Location

Posted Sep 23, 2024

Salute is seeking a dynamic and experienced Customer Success Manager to join their team and drive relationships with hyperscale clients. The role involves serving as the voice of the customer, leading collaboration with sales and operations, and identifying opportunities for engagement.

Product Engineer Director, Content (Contract role)

Company: Critical Mass

Location: New York City, NY

Posted Sep 25, 2024

The job posting is for a Product Engineer Director role at ArtBot, requiring a leader with expertise in motion design, user-centered experience design, and brand development. The role involves managing a team, creating motion assets, and mentoring artists. The company offers competitive benefits, flexible work arrangements, and a commitment to diversity and inclusion.

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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