Skills

Communication Leadership Decision-making

Job Specifications

Job Title:Principal Engineer- CDN transition
Job location: London
Duration:6 Months
Description:
The Contract Principal Engineer - CDN Migration is the lead technical authority for the CDN workstream within an active programme to migrate from an existing CDN platform to a target CDN.
The role is responsible for technical leadership, decision-making, and hands-on delivery throughout the migration, including validating and refining the target solution, managing technical risk, and guiding the transition to full production traffic.
This includes ensuring that traffic quality, bot management, and abuse controls are maintained or improved during the migration, particularly for media-style workloads with high visibility and sensitivity to false positives.
Working closely with permanent engineers and programme stakeholders, the role ensures the migration is delivered safely, meets performance and reliability expectations, and leaves the organisation well-positioned to operate and evolve the new CDN platform.
Required experience & skills
Core experience
Deep, hands-on experience operating CDN platforms in production at scale
Experience of CloudFlare or Fastly
Proven experience transitioning or stabilising live traffic between CDN platforms
Strong understanding of HTTP caching, TLS, edge routing, and failure modes
Experience working in environments with demanding uptime and performance requirements
Collaboration & delivery
Comfortable taking ownership of an existing platform and improving it pragmatically
Strong collaborator who works effectively alongside permanent teams
Calm, methodical approach to risk in high-change, high-traffic environments
Strong communication skills with technical and non-technical stakeholders
Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.

About the Company

Lorien is a technology, transformation and telecom talent solutions specialist. We combine tech expertise with the scope, depth and breadth of large-scale talent solutions. Driven by both clients and candidates, covering Europe and the US, we work with all sectors, sizes and tech needs – from start-up to established, tech companies and those who use tech to propel them further - we work with them all. Our unique position in the market means we have the insight to create tailored solutions – keeping our clients ahead of t... Know more