---
title: "Callosum Jobs & Careers: 10+ Open Roles (October 2026)"
canonical: "https://www.metaintro.com/company/callosum"
language: "en"
author: "Metaintro"
---

![](/api/company-logo?url=https%3A%2F%2Fwww.callosum.com%2Fapple-icon.png%3Fapple-icon.af8fe6b7.png&sig=zXVKf__QWognJoy1GDBwk7kAjhsGC7v8qc9V36ETcY4)
# Callosum

AI & compute company

[See 12 open roles](#company-roles)[Ask about Callosum](/signup?redirect=%2Fthread%2Fnew%3Fmessage%3DTell%2520me%2520about%2520Callosum%253A%2520what%2520they%2520do%252C%2520who%2520they%2520hire%252C%2520and%2520which%2520of%2520their%2520open%2520roles%2520fit%2520me.)

Hiring now

12open roles
- [Developer5](/company/callosum/jobs/developer)
- [Artificial Intelligence/Machine Learning4](/company/callosum/jobs/artificial-intelligence-machine-learning)
- [Science, Technology, Engineering, and Math2](/company/callosum/jobs/science-technology-engineering-and-math)
- [Security1](/company/callosum/jobs/security)

## Is Callosum hiring?

Yes. As of October 13, 2026, Callosum has 12 open roles on Metaintro.

## Open roles

Newest first. Pay shown when the posting lists it.

RoleLocationSetupPayPosted
- [Applied AI - Member of Technical StaffDeveloperLondon · On-siteLondonOn-site—8d ago](/job/applied-ai-member-of-technical-staff-at-callosum-3f5ca24a-4525-5ee1-b38e-330109b56857)
- [ML Research Engineer - Member of Technical StaffArtificial Intelligence/Machine LearningLondon · On-siteLondonOn-site—Aug 20, 2026](/job/ml-research-engineer-member-of-technical-staff-at-callosum-bd710484-e56d-5497-91e4-51d3ce105e3c)
- [Evolutionary Optimisation - Member of Technical StaffDeveloperLondon · On-siteLondonOn-site—Aug 20, 2026](/job/evolutionary-optimisation-member-of-technical-staff-at-callosum-6e99494c-a514-5947-88f7-bb84fced07eb)
- [Networking & Interconnect Systems - Member of Technical StaffScience, Technology, Engineering, and MathLondon · On-siteLondonOn-site—Aug 20, 2026](/job/networking-and-interconnect-systems-member-of-technical-staff-at-b1ef9e1a-3058-5507-9b81-ca542b3afa9f)
- [Research Engineer, Benchmarking - Member of Technical StaffArtificial Intelligence/Machine LearningLondon · On-siteLondonOn-site—Aug 20, 2026](/job/research-engineer-benchmarking-member-of-technical-staff-at-callosum-5565f635-6462-5719-a028-292a68cc4bf5)
- [Security Lead - Member of Technical StaffSecurityLondon · On-siteLondonOn-site—Aug 20, 2026](/job/security-lead-member-of-technical-staff-at-callosum-1dbdc35c-bf19-53e3-834e-03f0cce31b49)
- [Agent Runtime & Systems - Member of Technical StaffDeveloperLondon · On-siteLondonOn-site—Aug 20, 2026](/job/agent-runtime-and-systems-member-of-technical-staff-at-callosum-a4368807-92a3-5895-84e1-8a3cdb4d5ca2)
- [Research Engineer, Evals - Member of Technical StaffArtificial Intelligence/Machine LearningLondon · On-siteLondonOn-site—Aug 20, 2026](/job/research-engineer-evals-member-of-technical-staff-at-callosum-4292e313-b67e-5c83-b054-b42ec87fc01d)

[View all 12 roles](/company/callosum/jobs/all)

## Hiring pattern

How fast Callosum is adding roles, and how they're set up.

### New roles each monthRoles first posted in the month

2
11
0
0

JulyAugustSeptemberOctober

_October: 0 new roles._

## Skills they ask for

Most frequent across open postings.

Most requested skills

- Python

Tech stack

**Libraries**
: D3.js
: Tailwind CSS

**Analytics**
: Google Tag Manager

**Frameworks**
: Next.js

**CMS**
: Sanity

## Company facts

**Industry**
: AI & compute company

**Sector (NAICS)**
: Information

**Website**
: [callosum.com](https://www.callosum.com/)

**Careers**
: [callosum.com/join-us](https://callosum.com/join-us)

## Questions about Callosum

**Is Callosum hiring?**
: Yes. As of October 13, 2026, Callosum has 12 open roles on Metaintro. The most are in Developer (5), Artificial Intelligence/Machine Learning (4), and Science, Technology, Engineering, and Math (2).

**What skills does Callosum look for?**
: Its open roles most often ask for Python.

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