Platform Site Reliability Engineer - Member of Technical Staff
Callosum —London
- £101,000 - £192,000 a year
- Full-time
- AI
Quick apply
Site Reliability Engineer
Allwyn UK —Watford
- Hybrid work
- Software troubleshooting
- AWS
- Scripting
- Annual leave
- Employee assistance programme
Quick apply
7d
Site Reliability Engineer
GoCardless —London
- £78,400 - £117,600 a year
- English
- AWS
- Software development
Site Reliability Engineer- London
FDM Group —London
- Hybrid work
- Software troubleshooting
- Analysis skills
- Annual leave
13d
HPC Infrastructure Site Reliability Engineer
Radiant —London
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Master's degree
Quick apply
Site Reliability Engineer
Artificial Labs Ltd —London
- Remote
- DevOps
- AWS
- Mentoring
- Employee assistance programme
- Life insurance
Lead Site Reliability Engineer (AWS)
British Council —London
- Azure
- DevOps
- English
7d
Site Reliability Engineer - SRE Fleet
Cisco Systems —London
- Full-time
- AI
12d
Site Reliability Engineer
Trainline —London
- £55,000 - £63,000 a year
- Full-time
- Hybrid work
- AWS
- Scripting
- Linux
Senior / Lead Site Reliability Engineer
Allwyn UK —Watford
- Hybrid work
- Leadership
- Annual leave
- Employee assistance programme
Quick apply
7d
Lead Site Reliability Engineer
JPMorganChase —London
- Full-time
- Mentoring
- AI
- Analytics
5d
Site Reliability Engineer - Comcast Technology Solutions
Comcast Corporation —London
- Full-time
- Bachelor's degree
- Scripting
- Communication skills
14d
Senior Site Reliability Engineer
NewDay —London
- Full-time
- Mentoring
Principal Site Reliability Engineering Expert Director
Boston Consulting Group —London
- Full-time
- Travel
- Scripting
- AI
Site Reliability Engineer
Department for Business and Trade —London
- £45,835 - £60,993 a year
- Part-time
- Hybrid work
- AWS
- Presentation skills
- Communication skills
8d
DevOps Engineer / Site Reliability Engineer
Freelancer.com —London
- £70,000 - £100,000 a year
- Full-time
- Azure
- Computer Science
- Engineering
Quick apply
Site Reliability Engineer (SRE)
Virtusa —London
- No travel
- Communication skills
6d
Senior Cloud Site Reliability Engineer
Nice —London
- Hybrid work
- DevOps
- AWS
- Continuous improvement
5d
Site Reliability Engineer, Infrastructure - ThousandEyes
Cisco Systems —London
- Full-time
- Doctoral degree
- Master's degree
- Bachelor's degree
7d
CDS Clear IT Site Reliability Engineer
London Stock Exchange Group —London
- Full-time
- English
- IT
12d

I want to receive the latest job alerts for site reliability engineer in hemel hempstead hp3

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

site reliability engineer jobs near hemel hempstead hp3

Site Reliability Engineer jobs in London

Site Reliability Engineer jobs in Remote

Site Reliability Engineer jobs in Glasgow

Site Manager jobs in Newcastle Upon Tyne

Site Reliability Engineer jobs in Bromley

Site Manager jobs in Bristol

Site Reliability Engineer jobs in Sunderland

Entry Level Civil Engineer jobs in London

Site Reliability Engineer jobs in Remote, United Kingdom

Site Reliability Engineer jobs in Edinburgh

Site Reliability Engineer jobs in Reading

Site Reliability Engineer jobs in Belfast

Site Reliability Engineer jobs in Manchester

Artificial Intelligence Engineer jobs in England

Site Reliability Engineer jobs in Hackney

Mechanical Engineer jobs in Birmingham

Internship Software Engineer jobs in London

Site Reliability Engineer jobs in Birmingham

Telecom Engineer jobs in London

Site Reliability Engineer jobs in Leeds

Platform Site Reliability Engineer - Member of Technical Staff

Callosum
London

Quick apply

Job details

Full-time
£101,000 - £192,000 a year

Benefits

UK visa sponsorship
Private medical insurance

Qualifications

Incident response
AI

Full job description

About Us

The last era of AI scaled on a single bet: bigger models, more identical chips, more data. As problems grow more complex and the requirements of intelligence more diverse, that bet is breaking down. Real-world problems are heterogeneous: no single model or chip can solve them alone. The next era of AI requires heterogeneity at the infrastructure level - diverse models on diverse chips, each with distinct strengths, co-evolving into systems of capability that move the Pareto frontier of what is possible. That's what we are building.

Callosum is the Intelligent Systems Company. We started from questioning what actually creates intelligence. We believe there is no single answer, but rather a system-level solution. We co-evolve models, workflows, and silicon together to show that intelligence does not come from a single component, but it emerges from the diversity of co-optimised mechanisms working together and aware of each other. Heterogeneity will define the next era of compute, and is a principle that holds in biological, neuronal, and economic systems alike.

In early 2026 we launched with results showing orders of magnitude improvements in performance, and this is only the beginning. Agentic AI is the future of how intelligence is deployed: multi-step, long-horizon, and operating in changing environments. These systems are inherently heterogeneous, and can only be as powerful as the infrastructure that runs them.

We are engineers and scientists based in London, working together across the full depth of the stack. We are curious, intellectually honest, and building what doesn't exist yet. If you thrive on uncharted territory and are energised by the scale of the challenge, we'd love to hear from you.

About the Role

Our platform is the production system our customers route real traffic through. When it degrades, their product degrades. You will own its operational health end-to-end: SLOs, observability, incident response, deployment discipline, and capacity planning across heterogeneous compute backends. As the platform scales to millions of concurrent requests across heterogeneous compute, the work shifts from building the operational foundation to defending it under conditions most teams never encounter.

You'll define "production-grade" means for a platform at the centre of a fast-growing company, and own it end to end. The reliability practice is yours to build. You will work closely with the platform team, setting the technical direction. You will work closely with the hardware and orchestration teams to expose heterogeneous backends reliably through the platform.

Who You'll Build

Service-level objectives, monitoring, alerting, and observability
On-call and incident response: runbooks, escalation, blameless postmortems, and follow-through
Capacity planning and the operational side of running across heterogeneous compute backends

What You Bring

Strong SRE or production-engineering background running customer-facing systems at scale
Fluency with modern operational tooling: observability stacks, container orchestration, infrastructure-as-code, CI/CD
Experience owning incident response and driving reliability improvements.
Compliance execution experience

What Sets You Apart

Open-source contributions to relevant infrastructure, or production systems whose scale and complexity you can speak to in detail
Early-stage and AI-native company experience

What We Offer

Competitive Salary, determined by skills and experience
Equity & Ownership
Private healthcare
We offer Visa sponsorship and relocation benefits to hire the best in the world
We work in person at our London office. You'll have the tools, space and setup to do your best work, and if you have specific needs, just tell us

We're committed to building an inclusive workplace where everyone feels welcome, and believe in equal opportunities for all.

Compensation Range: £101K - £192K

Quick apply

Refine Your Search

site reliability engineer jobs in hemel hempstead hp3

Platform Site Reliability Engineer - Member of Technical Staff

Site Reliability Engineer

Site Reliability Engineer

Site Reliability Engineer- London

HPC Infrastructure Site Reliability Engineer

Site Reliability Engineer

Lead Site Reliability Engineer (AWS)

Site Reliability Engineer - SRE Fleet

Site Reliability Engineer

Senior / Lead Site Reliability Engineer

Lead Site Reliability Engineer

Site Reliability Engineer - Comcast Technology Solutions

Senior Site Reliability Engineer

Principal Site Reliability Engineering Expert Director

Site Reliability Engineer

DevOps Engineer / Site Reliability Engineer

Site Reliability Engineer (SRE)

Senior Cloud Site Reliability Engineer

Site Reliability Engineer, Infrastructure - ThousandEyes

CDS Clear IT Site Reliability Engineer

I want to receive the latest job alerts for site reliability engineer in hemel hempstead hp3

Related Searches

Explore jobs in more locations

About Us

About the Role

Who You'll Build

What You Bring

What Sets You Apart

What We Offer

Jobseeker tools

Employer Tools

Browse

Stay Connected