Critical Mass Jobs (18 Open Roles) and Hiring Activity

Roles Critical Mass opened and closed per day

OpenedClosed

Sun 25

Mon 26

Tue 27

Wed 28

Thu 29

Fri 30

Show as a table

Day	Opened	Closed
Sun 25	0	0
Mon 26	0	0
Tue 27	0	0
Wed 28	0	0
Thu 29	0	0
Fri 30	0	2

No job board shows when roles close: we compare Critical Mass's board with our previous scan every day. Large boards are re-read every few days, so changes can land in batches.

Newest Critical Mass jobs

Role	Location	Posted
Project Manager San Jose, Costa Rica · 2026-10-21	San Jose, Costa Rica	2026-10-21
Project Manager San Jose, Costa Rica · 2026-10-21	San Jose, Costa Rica	2026-10-21
Marketing Science Analyst San Jose · 2026-09-29	San Jose	2026-09-29
Invoice Reconciliations Manager (Media) San Jose, Costa Rica · 2026-09-23	San Jose, Costa Rica	2026-09-23
Associate Invoice Reconciliations (Media) San Jose, Costa Rica · 2026-09-23	San Jose, Costa Rica	2026-09-23
Designer (Visual & IA) San Jose, Costa Rica · 2026-09-09	San Jose, Costa Rica	2026-09-09
Project Manager (Media & Digital Campaigns) San Jose, Costa Rica · 2026-09-07	San Jose, Costa Rica	2026-09-07
Talent Acquisition Manager San Jose · 2026-09-03	San Jose	2026-09-03
Marketing Science, Analyst San Jose, Costa Rica · 2026-08-26	San Jose, Costa Rica	2026-08-26
Marketing Science, Analyst - Media San Jose, Costa Rica · 2026-08-24	San Jose, Costa Rica	2026-08-24
████████ ██████ ████	██████, ██	2026-██-██
████████ ██████ ████	██████, ██	2026-██-██
████████ ██████ ████	██████, ██	2026-██-██
🔒 8 more roles at Critical Mass, with full descriptions, salaries and seniority, are in the API. Get the full list free →

Each role links to the posting on Critical Mass's own career site.

Questions the API answers about Critical Mass

Each count is one API parameter away from the full list.

8senior, lead and management rolesseniority=senior,lead,manager,director,executive🔒roles that state a salary in the descriptionhas_salary=true🔒roles that say they sponsor visasvisa_sponsorship=true

Where Critical Mass is hiring

Location	Jobs
San Jose, Costa Rica	16 (89%)
San Jose	2 (11%)

Seniority

Seniority (from the job title)	Jobs
Entry	2
Senior	4
Manager	2
Director	2

Pay

Critical Mass's job list doesn't include salaries. The API reads each full description and pulls out the salary when the posting states one, so you can filter Critical Mass's roles by minimum pay.

Get Critical Mass's full job feed

One call returns every open Critical Mass role as JSON. Add filters such as remote=true or posted_after= to fetch only what's new since your last call.

curl --get "https://job-search-api-career-site-jobs.p.rapidapi.com/company" \
  --data-urlencode "company=https://job-boards.greenhouse.io/criticalmass" \
  -H "X-RapidAPI-Key: YOUR_KEY" \
  -H "X-RapidAPI-Host: job-search-api-career-site-jobs.p.rapidapi.com"

Example response

{
  "company": "Critical Mass",
  "title": "Project Manager",
  "location": "San Jose, Costa Rica",
  "isRemote": false,
  "employmentType": "full-time",
  "postedAt": "2026-10-21",
  "ats": "greenhouse",
  "seniority": null,
  "salaryMin": "…",
  "salaryMax": "…",
  "salaryCurrency": "…",
  "yearsExperienceMin": "…",
  "visaSponsorship": "…",
  "descriptionText": "… the full job description …",
  "applyUrl": "https://job-boards.greenhouse.io/criticalmass/jobs/8279995"
}

Get the full feed through the Job Search API
Every role, full descriptions, salaries, seniority, a minimum-salary filter and a live check that drops closed jobs. Free plan, no card needed.

Try it free →

More companies hiring on Greenhouse

All companies using Greenhouse →

Data from Critical Mass's public Greenhouse job board, refreshed 2026-10-30. Clean Feeds is not affiliated with Critical Mass. Questions or removal requests: hello@getcleanfeeds.com.

Critical Mass jobs and hiring activity