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 Creative Director

Company: Critical Mass

Location: Portland, OR

Posted Mar 03, 2023

The Associate Creative Director role involves leading multidisciplinary teams, contributing creative solutions, and driving creative discipline. The ideal candidate has 4+ years of design, marketing, and communications interactive work experience, art direction experience, and a passion for design. They should have experience in developing Internet commerce, electronic marketing, and online brand management. The role requires effective communication of creative ideas, strategic account planning, and mentorship of the creative team. The company is committed to diversity and inclusion, and offers a hybrid work model with a minimum of 2 days in the office per week.

Senior Developer, Front End

Company: Critical Mass

Location: Chicago, IL

Posted Mar 02, 2023

The Critical Mass technology team is seeking a Senior Front End Developer with extensive experience in Vanilla Javascript, HTML5, CSS3, and CSS-based animation. The role involves collaborating with design and UX, mentoring other developers, ensuring code compatibility, and optimizing page performance. The team values strong communication skills, team-centric approach, and WCAG compliance.

Senior Search Strategist

Company: Critical Mass

Location: Other US Location

Posted Mar 05, 2023

The job description is for a Senior Search Strategist role in an integrated SEO/SEM team. The candidate will be responsible for developing holistic search strategies, managing paid search campaigns, and collaborating with multiple teams. They will also be required to communicate paid search best practices, monitor and analyze performance, and deliver actionable insights to clients.

Marketing Science Implementation Lead

Company: Critical Mass

Location: Other US Location

Posted Mar 04, 2023

The job description is for a Marketing Science Lead with 5-8 years of experience. The role involves leading a team of analysts, delivering Marketing Science projects, and optimizing digital marketing efforts. The candidate should have expertise in areas like tracking and measurement, implementation, reporting, data visualization, testing and evaluation, data integration, or statistical modeling. They should also have experience in data science and advanced analytics, with expertise in at least two of the mentioned tools. The role requires managing daily operations, prioritization activities, resourcing, and overall analytics delivery. The candidate should have a B.S. degree in a quantitative or technical field and advanced Microsoft Excel and Office skills.

Executive Creative Director

Company: Critical Mass

Location: Los Angeles, CA

Posted Feb 26, 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.

PIPELINE, Future Client Services Talent

Company: Critical Mass

Location: Other US Location

Posted Mar 03, 2023

Critical Mass, a renowned digital experience design agency, is seeking talented Account Managers for various levels. They emphasize a hybrid work model, requiring a minimum of 3 days in the office weekly to foster learning, collaboration, and engagement. The company is committed to diversity and inclusion, and offers opportunities for remote work. They provide comprehensive training and onboarding to ensure long-term success.

Future Creative Openings

Company: Critical Mass

Location: Portland, OR

Posted Feb 18, 2023

Critical Mass is a digital experience design agency that is open to remote work and hiring talented industry creatives. They offer a range of job openings, including freelance and full-time positions, and are committed to diversity and inclusion in the workplace.

Account Director

Company: Critical Mass

Location: Nashville, TN

Posted Mar 01, 2023

The text describes a high-level Account Director role in an integrated agency, responsible for managing and growing client relationships, leading internal teams, and delivering cross-channel campaigns. The role requires strategic direction, financial management, and collaboration with clients and other teams. The candidate should have 5-10 years of experience in integrated agencies and be comfortable working in an office at least 3 days a week.

Product Specialist

Company: Critical Mass

Location: Other US Location

Posted Mar 04, 2023

The Product Specialist role involves developing and maintaining expertise on all aspects of the client's products, researching future developments, and ensuring high-quality work by reducing mistakes and increasing team competency. The role requires onsite time at both client and agency offices and involves creating knowledge documentation, providing training, and acting as a Quality Assurance resource.

Marketing Science Analyst

Company: Critical Mass

Location: Chicago, IL

Posted Mar 04, 2023

The job posting is for a Marketing Science Analyst position with 1-3 years of experience. The role involves analyzing complex data, turning it into actionable insights, and designing, building, and automating analyses, reports, and dashboards. The ideal candidate should have strong communication skills, experience with website and digital media analytics platforms, and a solid understanding of digital media channels. The role also requires familiarity with marketing attribution models, data visualization platforms, and APIs. The company emphasizes continuous learning, collaboration, and employee engagement, proposing a hybrid work model. Critical Mass is committed to diversity and inclusion, and does not tolerate discrimination.

Technology Lead, Front End

Company: Critical Mass

Location: Nashville, TN

Posted Feb 25, 2023

Critical Mass is looking to add a Technology Lead to their growing team. The role involves leading technical teams, developing web applications, and working with various front-end technologies. The company offers a hybrid work model and is committed to diversity and inclusion.

Technology Lead, Front End

Company: Critical Mass

Location: Austin, TX

Posted Feb 25, 2023

Critical Mass is seeking a Technology Lead to oversee a team of developers in transforming architectural concepts into prototypes. The role requires hands-on coding, leadership, and multitasking skills. The candidate should be able to provide technical analysis, estimate tasks, and work with various front-end technologies. The position is remote within the US and requires a U.S. security clearance.

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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