Proxy Engineer – Consultancy

Company: Hamilton Barnes Associates Limited
Apply for the Proxy Engineer – Consultancy
Location: London
Job Description:

The firm is seeking a Senior Security Proxy Engineer to join on a 6-month hybrid contract based in London (3 days on-site), focusing on implementing, operating, and optimising enterprise proxy infrastructure to enable secure access to internal and third-party services, while supporting regulatory compliance, security controls, and large-scale user productivity.

Responsibilities

  • Implement, configure, and maintain enterprise Proxy and secure web gateway services, managing policies for web access control, traffic inspection, TLS decryption, and egress IP enforcement
  • Monitor Proxy service health, availability, and performance, performing root-cause analysis for incidents and participating in incident response and post-incident reviews
  • Support compliance activities by maintaining logging, retention, and inspection settings, and providing Proxy logs and traffic analysis for security investigations and audits
  • Implement and maintain identity-aware Proxy policies integrating with identity providers and authentication systems, supporting onboarding of new applications and SaaS services
  • Maintain operational documentation, configuration standards, and troubleshooting runbooks, collaborating with network, endpoint, IAM, cloud, and security teams

Skills / Must Have

  • 6+ years hands‑on experience supporting enterprise Proxy or secure web gateway platforms, with strong knowledge of HTTP/HTTPS, TLS, certificates, and encryption/decryption processes
  • Experience implementing and managing Proxy policies for traffic inspection, filtering, and outbound control in production environments
  • Solid networking fundamentals, TCP/IP, DNS, routing, and load balancing with proven ability to troubleshoot complex Proxy‑related access and performance issues
  • Experience with identity‑centric access models, SSO, and device or user‑based policy enforcement within Proxy environments
  • Familiarity with cloud‑delivered or hybrid Proxy environments, with exposure to automation or scripting for Proxy configuration and monitoring

Contract Details

  • Contract Type: Initial 6 month contract (Inside IR35)
  • Location: Hybrid in London

Salary

  • £500 per day Inside IR35

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Posted: May 17th, 2026