Senior Platform Engineer

United KingdomUnited Kingdom·London,Londonfull-timesenior
EngineeringDevops Engineer
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Quick Summary

Overview

About the role We’re looking for an exceptional Senior Platform Engineer to join Definely during a pivotal stage of growth. Senior Platform Engineers get involved with the whole product infrastructure and tooling, building out novel and scalable solutions for engineers and customers.

Technical Tools
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About the Role

~1 min read

We’re looking for an exceptional Senior Platform Engineer to join Definely during a pivotal stage of growth. Senior Platform Engineers get involved with the whole product infrastructure and tooling, building out novel and scalable solutions for engineers and customers. We’re also responsible for reliability, security and automation.

Responsibilities

~1 min read

The work we do in platform is broad and deep, but in a normal week you’ll be involved in:

  • 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

  • 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

  • 💰 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

Definely builds specialist review tools for lawyers working on complex contracts. As AI accelerates the volume and pace of legal decisions, Definely ensures lawyers can understand the full structure of a contract, see the implications of every change, and negotiate with confidence and control.

Launched in September 2020 by Nnamdi Emelifeonwu and Feargus MacDaeid, who worked together at Freshfields, Definely is trusted by over 150+ in-house legal teams and private practice firms, with thousands of users globally. Its customers span top Magic Circle and AMLaw 200 firms, including A&O Shearman, Slaughter and May, DLA Piper, KPMG, Samsung and IKEA.
Definely recently raised its Series B and is backed by Microsoft, Google, and Octopus Ventures. This is a rare opportunity to shape a new category at the moment it becomes essential.

 

‍By submitting your application, you agree that DEFEYENE LEGAL SOLUTIONS LIMITED ('Definely') may collect, process, and store your personal data as part of our recruitment process. We will use the information you provide to assess your qualifications for the role you are applying for and to communicate with you regarding your application.Your personal data will be stored for up to 12 months, after which it will be securely deleted unless we have another lawful basis to retain it. You have the right to access, correct, or request the deletion of your data at any time.For more details on how we handle your personal data and your rights, please send us an email to people@definely.com and we will send your our privacy policy.


If you have any concerns about how your data is being processed, please do not hesitate to contact us.

Location & Eligibility

Where is the job
London, United Kingdom
Hybrid — some on-site time required
Who can apply
Open to applicants worldwide

Listing Details

Posted
May 13, 2026
First seen
May 13, 2026
Last seen
May 24, 2026

Posting Health

Days active
10
Repost count
0
Trust Level
23%
Scored at
May 24, 2026

Signal breakdown

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definelycareersSenior Platform Engineer