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.

Design Director, Digital

Company: Critical Mass

Location: Los Angeles, CA

Posted Nov 04, 2023

The job posting is for a Design Director position at Critical Mass. The role involves leading the design of a digital design system, managing a small design team, and collaborating with other discipline leads. The ideal candidate should have 8+ years of relevant experience, a strong portfolio, and expertise in Figma and other industry standard creative tools. The salary range is $165,000 - $185,000 USD. Critical Mass is committed to diversity and inclusion.

Strategy Director

Company: Critical Mass

Location: Other US Location

Posted Nov 06, 2023

The text describes a Strategy Director role at Critical Mass, a digital agency. The role involves strategic leadership, insights and planning, managing project quality, collaborating with team members, and providing guidance on I&P practices. The ideal candidate should have 5+ years of experience in account planning, business analysis, qualitative and quantitative research, web analytics, and information architecture. Critical Mass offers competitive benefits, including global maternity and parental leave, flexible work hours, and a commitment to diversity and inclusion. The company expects employees to work from the office a minimum of 4 days a week to foster continuous learning, collaboration, and engagement.

Associate Media Director

Company: Critical Mass

Location: New York City, NY

Posted Nov 06, 2023

The Associate Media Director role involves managing online media strategy, building client relationships, identifying customer insights, and staying updated on industry trends. The ideal candidate has 6-8 years of experience in online media planning and buying, social media, and search, with a strategic mindset and ability to work independently. The company offers competitive benefits, including global maternity and parental leave, and expects employees to work from the office a minimum of 4 days a week to foster learning, collaboration, and engagement. The salary range is $70,000 to $125,000 USD.

Freelance Associate Creative Director, Art

Company: Critical Mass

Location: New York City, NY

Posted Nov 07, 2023

The text describes a highly skilled and experienced Associate Creative Director with a strong creative voice and strategic thinking abilities. They lead major marketing initiatives, develop solid client relations, and have a broad knowledge of design, experience design, brand development, interactive commerce, and creative processes. The individual is looking to enhance their management skills, fostering professional growth and inspiring their team. They drive strategies addressing customer needs and business goals, contribute creative solutions, and promote continuous improvement. The candidate has 4+ years of design, marketing, or communications interactive work experience, a strong design portfolio, and a passion for design. They are expected to work from an office a minimum of 4 days a week to strengthen continuous learning, collaboration, and employee engagement. Critical Mass is an equal opportunity employer committed to diversity and inclusion.

Account Director

Company: Critical Mass

Location: Chicago, IL

Posted Nov 07, 2023

Critical Mass, a leading digital marketing agency, is seeking an experienced Account Director. The role involves managing key client accounts, driving digital excellence, and collaborating with cross-disciplinary teams. The ideal candidate should have 6-10 years of experience in internet marketing, digital strategy, and site development. They should possess excellent communication skills, leadership abilities, and a comprehensive understanding of the digital landscape. Critical Mass offers competitive benefits, including global maternity and parental leave, extensive vacation, and a focus on diversity and inclusion. The company expects employees to work from the office a minimum of 4 days a week to strengthen learning, collaboration, and engagement.

Account Director

Company: Critical Mass

Location: New York City, NY

Posted Nov 07, 2023

The text describes a highly experienced Account Director role at Critical Mass, an agency specializing in digital marketing, user experience, and product design. The role involves managing client relationships, providing strategic direction, leading internal and client teams, managing finances, and driving organic growth. The ideal candidate should have 5-10 years of experience in account management, managing complex projects and clients, and formulating long-term strategic plans. They should also possess strong leadership, negotiation, and communication skills. The company emphasizes continuous learning, collaboration, and employee engagement, expecting employees to work from the office at least 4 days a week. The salary range for this role is $150,000-$165,000 USD. Critical Mass is committed to diversity, equity, and inclusion, with a target of achieving at least 50% representation from underrepresented communities.

Project Manager

Company: Critical Mass

Location: Chicago, IL

Posted Nov 06, 2023

Critical Mass is seeking a Project Manager with at least 3 years of experience in managing various digital projects. The ideal candidate will have a strong understanding of project management principles, excellent communication skills, and the ability to lead a cross-functional team. The role involves collaborating with clients, developing project plans, managing budgets, and ensuring project success. Critical Mass offers competitive benefits, including global maternity and parental leave, diverse learning opportunities, and a collaborative work environment. The company is committed to diversity, equity, and inclusion, with a target of achieving at least 50% representation from underrepresented communities.

Project Coordinator

Company: Critical Mass

Location: Other US Location

Posted Oct 28, 2023

Critical Mass is offering a Trailhead program for a 12-week learning journey to understand their work and integrate new hires into their team. The Winter 2024 Trailhead Cohort starts on February 6, 2024. The Project Coordinator role involves assisting in the development of interactive web-based solutions, managing project plans, schedules, and budgets, and promoting professionalism. The company provides competitive benefits, global maternity and parental leave, and a focus on diversity, equity, and inclusion. They expect employees to work from the office a minimum of 4 days a week to strengthen learning, collaboration, and engagement.

Technical Support Analyst

Company: Critical Mass

Location: Other US Location

Posted Nov 06, 2023

Critical Mass is hiring a Technical Support Analyst to provide comprehensive support for their ArtBot computing environment. The role involves assisting with on/off-boarding, offering desktop support for PC and Mac systems, managing hardware pickup routes, and overseeing system configuration. The company emphasizes continuous learning, collaboration, and employee engagement, expecting employees to work from the office at least 4 days a week. The ideal candidate should have experience in supporting Windows 11 and MacOS Monterey/Ventura, strong customer service skills, and excellent organizational abilities.

Operations Coordinator

Company: Critical Mass

Location: Chicago, IL

Posted Oct 28, 2023

Critical Mass is offering a Trailhead program for a 12-week learning journey to understand the company's work and culture. The program aims to integrate new hires into the team and support their career growth. The Operations Coordinator role involves identifying partner organizations to supplement the agency's services. The role requires post-secondary education, strong computer skills, and excellent communication abilities. Critical Mass offers competitive benefits, including global maternity and parental leave, flexible work hours, and a focus on diversity, equity, and inclusion. The company expects Trailhead Talent to work from the local office 4 days a week to enhance learning, collaboration, and engagement.

Senior Paid Search Strategist

Company: Critical Mass

Location: New York City, NY

Posted Oct 28, 2023

The Talent Team at Critical Mass emphasizes providing top-notch training, onboarding, and employee experience. They aim to foster continuous learning, improve collaboration, and increase engagement by requiring employees to work from the office for a minimum of 4 days a week. The company is committed to diversity, equity, and inclusion, with a target of achieving at least 50% representation from underrepresented communities. Critical Mass is an equal opportunity employer that does not tolerate discrimination. The salary range for the position is $50,000 to $95,000 USD.

Marketing Science Lead

Company: Critical Mass

Location: Other US Location

Posted Nov 04, 2023

The Marketing Science Lead is a multidisciplinary expert in tracking, measurement, data visualization, testing, evaluation, and statistical modeling. They champion data science practices, supervise a team of analysts, and ensure their growth and development. The role involves delivering complex projects, identifying and addressing clients' business needs, and fostering understanding of marketing science across the agency. The company offers competitive benefits, global maternity and parental leave, and a focus on employee experience and long-term success.

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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