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.

Client Services Intern

Company: Critical Mass

Location: Chicago, IL

Posted Feb 14, 2023

The Critical Mass Trailhead Internship Program is a 12-week program offering learning opportunities, mentorship, real client work, and a stipend. The internship aims to integrate new talent into the company's digital agency world. The role involves supporting the Client Service Team in managing and growing client relationships, organizing meetings, preparing presentations, and coordinating with internal teams. The internship is a rolling application process with a start date of May 22 and end date of August 11, 2023.

Senior Art Director

Company: Critical Mass

Location: Portland, OR

Posted Feb 03, 2023

The job description is for a Senior Art Director position at Critical Mass, a company that values creativity, leadership, and collaboration. The role involves developing concepts, communicating ideas, and leading a team of designers and writers. The company offers mentorship, training, and a hybrid work model that balances individual flexibility with team collaboration.

Executive Creative Director

Company: Critical Mass

Location: Los Angeles, CA

Posted Feb 01, 2023

The job posting is for an Executive Creative Director position at Critical Mass, a company that provides creative services. The job requires a strong leader with experience in creative direction, team management, and client relationships. The salary range is $200,000 to $260,000 per year.

Senior Project Manager, Creative

Company: Critical Mass

Location: Portland, OR

Posted Feb 04, 2023

The job description is for a Senior Creative Project Manager at Critical Mass, a company that creates digital experiences for clients. The role involves managing client relations, project delivery, and team communication. The ideal candidate has experience in digital project delivery, strong communication skills, and a passion for working with globally admired brands.

Executive Creative Director

Company: Critical Mass

Location: Los Angeles, CA

Posted Feb 01, 2023

The job posting is for an Executive Creative Director position at Critical Mass, a company that provides creative services. The job requires a strong leader with experience in creative direction, team management, and client relationships. The salary range is $200,000 to $260,000 per year.

Future Creative Openings

Company: Critical Mass

Location: Other US Location

Posted Jan 24, 2023

None Found

Project Coordinator

Company: Critical Mass

Location: Other US Location

Posted Feb 15, 2023

The Trailhead program at Critical Mass is a 12-week learning journey for new hires, focusing on understanding the company's work, integrating new team members, and supporting career growth. The Summer 2023 cohort starts on June 5, 2023. The Project Coordinator role involves assisting in project development, maintaining plans, and managing resources. The role requires strong computer skills, communication, and interpersonal skills, as well as the ability to work in a fast-paced environment and learn new media project management. Critical Mass expects new hires to work from the office on Tuesdays and Thursdays to foster learning, collaboration, and engagement.

A, MMNA, Account Director

Company: Critical Mass

Location: Nashville, TN

Posted Feb 04, 2023

The job description is for an Account Director position at Critical Mass, a digital marketing agency. The role involves managing client relationships, leading internal teams, and developing strategic plans. The company emphasizes the importance of teamwork, collaboration, and employee engagement.

Media Director

Company: Critical Mass

Location: Chicago, IL

Posted Jan 17, 2023

The role of a Media Director involves driving the strategic use of media to impact a client's business performance. This includes developing a strategic vision, guiding team execution and management, conducting audience insights, managing client relationships, integrating cross-discipline teams, and leading a holistic approach across digital and traditional media channels. The role requires 9+ years of digital media experience, 4+ years of management experience, and a strong understanding of digital media and the digital landscape. The Media Director must have excellent communication skills, project management abilities, and the ability to adapt to new situations.

Client Services Intern

Company: Critical Mass

Location: Other US Location

Posted Feb 14, 2023

The Critical Mass Trailhead Internship Program is a 12-week program offering a fast-track to launch your career with regular learning opportunities, mentorship, and real client work. The intern will work with the Client Service Team to manage and grow client relationships, develop digital acumen, and grow in their role with key guidance and mentorship. The internship runs from May 22-August 11, 2023, and is a rolling basis application. The intern will work from an office on Tuesdays and Thursdays to strengthen learning, collaboration, and employee engagement.

Senior Search Strategist

Company: Critical Mass

Location: Other US Location

Posted Feb 08, 2023

The job description is for a Senior Search Strategist role in an integrated SEO/SEM team. The candidate will work on developing holistic search strategies, managing paid search campaigns, and providing data-driven insights and performance reporting to clients. They will collaborate with multiple teams, define and communicate SEM goals, and educate teams on future priorities and opportunities.

Future Creative Openings

Company: Critical Mass

Location: Portland, OR

Posted Jan 24, 2023

None Found

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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