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Definely

Senior Platform Engineer

Definely

Senior Platform Engineer at Definely building scalable solutions for engineers and customers. Involved with operational performance, CI/CD management, and cloud architecture.

Posted 5/13/2026full-timeLondon • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies
AWSCloudTerraform

About the role

Key responsibilities & impact
  • Own the operational performance of our systems, analysing repetitive work and toil, and automating where most advantageous
  • Manage our CI/CD system and improve the developer experience whilst maintaining error budgets and deployment safety
  • Design and architect our platform to support product needs at a strategic level
  • Build a highly robust cloud environment (mostly AWS) through IaC,automation and best-fit architectures
  • Leading projects of improvement to our platform and ensuring delivery according to plan
  • Collaborating closely with product engineering, security and leadership teams across the business

Requirements

What you’ll need
  • Strong experience in platform engineering, DevOps, or Infrastructure roles
  • Expertise in Cloud tools and services (AWS is our primary cloud)
  • Deep understanding of DevOps SRE practices
  • Directing and architecting robust and resilient cloud services through IaC (we use Terraform)
  • Knowledge of highly performant and strongly governed CI/CD practices and tooling
  • Ability to lead technical projects and make pragmatic architectural decisions
  • Have experience with security products and tooling, and DevSecOps experience in a highly dynamic environment
  • Have experience leading incident response and post incident reviews
  • Deep experience with data platforms (databases, queues, caches, storage etc.)
  • Have experience building AI/ML infrastructure or workloads
  • Have worked in high growth SaaS or startup environments

Benefits

Comp & perks
  • 💰 Competitive salary & annual bonus
  • 📈Share options
  • 🎉 Quarterly team socials & annual company offsite
  • 🏠 Hybrid working + 🌍 1 month “work from anywhere”
  • 🏖️ 25 days holiday + bank holidays
  • 🎂 Take your birthday off
  • 📚 £750 annual learning & development budget
  • 🩺 Private healthcare (incl. dental & optical)
  • 👶 Enhanced parental leave
  • 🚲 Additional perks: Cycle to Work, Workplace Nursery salary sacrifice scheme, and top-quality equipment

ATS Keywords

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Hard Skills & Tools
platform engineeringDevOpsInfrastructureAWSIaCTerraformCI/CDDevSecOpsdata platformsAI/ML infrastructure
Soft Skills
leadershipcollaborationproject managementarchitectural decision makingincident responsecommunication