Platform Engineer

Senior Platform Engineer (PHP) Fully Remote (UK) Up to £90,000 12 Month FTC We’re working with a high-scale SaaS business undergoing significant engineering growth and platform evolution, currently looking to add a Senior Platform Engineer into a highly technical, product-engineering-led environment. This role sits within a senior platform function focused on improving developer experience, internal tooling, scalability, and platform reliability across a large engineering organisation. The business operates at significant scale, supporting thousands of customers and handling high traffic volumes daily.

This is not a traditional infrastructure-heavy Platform Engineer role. The focus is much more around backend/platform engineering, developer enablement, tooling, systems scalability, and solving engineering problems that improve how development teams build and ship software. What You’ll Be Doing Designing and improving internal platform and backend tooling Supporting engineering scalability, reliability, and developer experience initiatives Working closely with Platform, SRE, DevEx, and wider engineering teams Improving CI/CD workflows, QA/development environments, and automation processes Contributing to high-scale backend systems and platform optimisation work Mentoring engineers and leading smaller technical initiatives Supporting AI-assisted engineering workflows and tooling adoption across teams What They’re Looking For Strong backend engineering experience using PHP Experience working within high-scale SaaS or product-led environments Strong systems thinking and platform engineering mindset Experience building scalable backend systems and APIs Strong communicator with collaborative working style Comfortable mentoring engineers and taking ownership of technical problems Cloud experience (AWS preferred) Passion for improving engineering efficiency and developer workflows Nice To Have DevEx / Internal Developer Platform (IDP) experience ECS, containers, or distributed systems exposure AI tooling experience (Claude, Cursor, Copilot etc.) React/frontend ecosystem familiarity Why This Role Stands Out Fully remote working Engineering-led culture with strong technical leadership Opportunity to shape internal developer experience at scale Modern cloud-native environment with strong investment into platform engineering AI-first engineering approach with active experimentation and tooling adoption High autonomy and ownership within a collaborative senior engineering team Interesting scalability and systems challenges in a large SaaS environment This role would suit a strong backend/platform engineer who enjoys solving engineering problems at scale, improving developer experience, and working within a modern product engineering culture.