Platform Site Reliability Engineer - Member of Technical Staff at Callosum

✨ The Stack take on this Callosum job

• 🏢 Callosum has 5 jobs here, 5 with visa sponsorship see all
• 🛂 Skilled Worker visa. Standard minimum salary: £41,700 a year guide

Updated 2026-11-05, from our data and official sources.

Apply with your AI assistant

With The Stack connected to Claude, ChatGPT or Cursor, paste this. Your assistant tailors your CV and cover letter, checks the visa facts and gives you the apply link.

Help me apply to this job on The Stack: https://jobs.trythestack.co/jobs/platform-site-reliability-engineer-member-of-technical-staff-callosum-

Not connected yet? Connect in a minute. To help your user apply, call the MCP tool prepare_application with slug "platform-site-reliability-engineer-member-of-technical-staff-callosum-": it returns the apply link, the visa facts and a CV and cover letter checklist. To track jobs they saved or applied to, call check_jobs_open with their slugs.

About the role

Responsibilities:
- Own end-to-end operational health of the production platform: define SLOs, monitoring, alerting and observability.
- Run and improve on-call processes: create runbooks, lead incident response, conduct blameless postmortems and ensure follow-through.
- Lead capacity planning and operational strategy for heterogeneous compute backends to handle large-scale concurrent traffic.
- Define "production-grade" standards and build reliability practice for a fast-growing platform serving real customer traffic.
- Collaborate closely with platform, hardware and orchestration teams to expose diverse compute backends reliably.

Requirements:
- Strong SRE or production-engineering background running customer-facing systems at scale.
- Experience defining and operating SLOs, monitoring pipelines, alerting and incident response playbooks.
- Proven capacity planning and performance tuning experience for high-concurrency services across diverse infrastructure.
- Hands-on familiarity with container orchestration, observability tooling and infrastructure-as-code practices.
- Strong collaboration skills and a bias for building durable operational systems rather than temporary fixes.

Responsibilities

Own the end-to-end operational health of the production platform, including SLOs, observability, and capacity planning across heterogeneous compute backends. Build the reliability practice and collaborate with hardware and orchestration teams to ensure stable service delivery.

Requirements

Requires a strong SRE or production engineering background managing large-scale customer-facing systems. Proficiency in modern operational tooling, container orchestration, and experience driving incident response improvements are essential.

Key skills

• Site Reliability Engineering — in 54 other listings on The Stack
• Production Engineering — in 4 other listings on The Stack
• Observability — in 305 other listings on The Stack
• Container Orchestration — in 21 other listings on The Stack
• Infrastructure-as-Code — in 49 other listings on The Stack
• CI/CD — in 630 other listings on The Stack
• Incident Response — in 64 other listings on The Stack
• Capacity Planning — in 18 other listings on The Stack
• SLO Definition
• Compliance Execution
• Monitoring
• Alerting

On The Stack (as of 2026-11-05)

• Callosum has 4 other listings on The Stack, 4 of them marked as offering visa sponsorship.
• 214 visa-sponsored jobs in the United Kingdom on The Stack, posted in the last 60 days.
• 44 visa-sponsored devops engineer jobs in Europe on The Stack, posted in the last 60 days.
• The top of its stated salary (GBP 192,000 per year) is higher than 12 of the 16 other GBP per-year salaries stated by listings in the United Kingdom on The Stack.

Frequently asked questions about Callosum

Is this Platform Site Reliability Engineer - Member of Technical Staff role still open?

It was posted on 2026-06-16. Listings more than 30 days old may no longer be active, so check Callosum 's site before applying.

Does Callosum offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Callosum 's site.

Where is this role located?

The listing gives the location as United Kingdom. It is marked on-site.

What is the salary for this role?

The listing states a salary of GBP 101,000–192,000 per year.

What skills does this role ask for?

The listing names: Site Reliability Engineering, Production Engineering, Observability, Container Orchestration, Infrastructure-as-Code, CI/CD, Incident Response, Capacity Planning, SLO Definition, Compliance Execution, Monitoring, Alerting.