Platform Engineer

We're looking for the second member of our Platform Engineering team to build, scale and own the infrastructure that powers Magentic's AI procurement solution. We have a very ambitious product vision, but we’re early in our building journey and are looking for an experienced Platform Engineer to build a best in class infrastructure from the ground up. This is a rare opportunity to join early enough to help build a high-quality rocket ship, rather than rebuild it in flight.
We’re pushing the boundaries of AI with next-generation agentic systems that can manage entire procurement workflows. Our mission is to make global manufacturing supply chains robust to an ever-changing world - that’s a $3tn market opportunity.
If that’s not exciting enough - we’re backed by world-class investors including Sequoia Capital, and you’d be working along a super talented team which brings together expertise from OpenAI, Meta, Revolut, NASA and McKinsey (and that’s just the first 11 people!).
What You’ll Do

• Design, build and own the cloud-native backbone that powers our AI agent workers at scale.
• Shape a multi-tenant, multi-cloud platform (we deploy were our customers are) following IaC and GitOps best practices, while balancing speed, cost and security.
• Work with the development team to design processes for secure software delivery (GitHub workflows, AI agent tooling for reviews, security and compliance)
• Make our systems, both AI and non-AI, highly observable
• Champion security, compliance and automation to turn them into an advantage, instead of friction

You Might Be a Great Fit if You

• Have deep cloud mastery of Azure and/or AWS
• Strong experience with containers and orchestration
• Are an enthusiastic student/hobbyist of AI able to leverage agent-assisted development
• Have managed production clusters at scale with IaC in security-certified companies
• Have experience working with development teams to make their lives easier
• Can take a loosely defined problem, sketch an architecture, and deliver a production-ready solution in days or weeks, not months
• Have the experience to know what is needed now and what can come later
• Can communicate clearly with both engineers and business stakeholders

Bonus Points

• Experience designing self-hosted, cloud agnostic, AI/ML infrastructure
• Infrastructure/platform experience in B2B settings, e.g.: Identity Federation

Compensation and BenefitsAt Magentic, we recognise and reward the talent that drives our success. We offer:

• Competitive Equity: play a real part in Magentic’s upside
• Visa sponsorship
• In-office lunches provided
• Salary sacrifice pension and nursery schemes
• Hybrid London HQ (3-4 days in the office/customer site)
• Annual team retreat—a fully-funded off-site to recharge, bond, and build