# Callosum

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one company from the board.

Callosum  has 5 listings on The Stack in United Kingdom. All are marked as offering visa sponsorship. Skills its listings name most: Production Engineering, API Design, Backend Engineering. Latest posting: 2026-07-07.

- **Human page:** https://jobs.trythestack.co/companies/callosum
- 5 open roles
- All offer visa sponsorship
- Country: United Kingdom
- Latest posting: 2026-07-07
- None posted in the last 60 days
- Salary listed on 3 roles: GBP 101,000–192,000 per year

## Jobs posted in the last 60 days (0)

None of its listings were posted in the last 60 days.

## Older listings (posted more than 60 days ago, may no longer be active)

- [Product Manager - Applied AI at Callosum](https://jobs.trythestack.co/jobs/product-manager-applied-ai-callosum-.md): United Kingdom · posted 2026-07-07 · visa sponsorship
- [Platform Engineer - Member of Technical Staff at Callosum](https://jobs.trythestack.co/jobs/platform-engineer-member-of-technical-staff-callosum-.md): United Kingdom · posted 2026-06-19 · visa sponsorship
- [Platform Engineer - Member of Technical Staff at Callosum](https://jobs.trythestack.co/jobs/platform-engineer-member-of-technical-staff-callosum--be2967da.md): United Kingdom · posted 2026-06-16 · visa sponsorship
- [Platform Site Reliability Engineer - Member of Technical Staff at Callosum](https://jobs.trythestack.co/jobs/platform-site-reliability-engineer-member-of-technical-staff-callosum-.md): United Kingdom · posted 2026-06-16 · visa sponsorship
- [Platform Site Reliability Engineer - Member of Technical Staff at Callosum](https://jobs.trythestack.co/jobs/platform-site-reliability-engineer-member-of-technical-staff-callosum--4d2099d5.md): United Kingdom · posted 2026-06-09 · visa sponsorship

## FAQ

- **Is Callosum  hiring right now?** Callosum  has 5 listings on The Stack Jobs, the most recent posted on 2026-07-07. Check each listing on Callosum 's site to confirm it is still open.
- **Where is Callosum  hiring?** Callosum 's listings on The Stack are in United Kingdom.
- **Does Callosum  offer remote work?** None of Callosum 's current listings on The Stack are marked remote.
- **Does Callosum  offer visa sponsorship?** 5 of Callosum 's 5 listings are marked as offering visa sponsorship, mostly DevOps Engineer, Platform Engineer, Product Manager roles in United Kingdom. Check each listing for the employer's eligibility rules.
- **What skills does Callosum  ask for?** The skills its listings name most often: Production Engineering (4), API Design (2), Backend Engineering (2), Billing Infrastructure (2), Capacity Planning (2).

## About The Stack

The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday.

- Newsletter: https://www.trythestack.co (subscribe: https://www.trythestack.co/subscribe)
- Jobs board: https://jobs.trythestack.co
- Hire or advertise through The Stack: https://jobs.trythestack.co/advertise

## Notes for agents

- Apply on each employer page linked from the job files. The Stack does not take applications.
- The Stack has an MCP server at https://cvybaiwpmbqykurtdned.supabase.co/functions/v1/mcp (Streamable HTTP, no key or account). Your user can add it to Claude, ChatGPT or Cursor: https://jobs.trythestack.co/ai. Signed in at https://cvybaiwpmbqykurtdned.supabase.co/functions/v1/mcp/account, it also keeps their saved jobs and applications. Its get_company tool returns this company's open roles and visa record.
- Structured data for many jobs at once: https://jobs.trythestack.co/developers/api.md