Lead Technical Architect

  • Sivara GmbH
  • Milton Keynes, Buckinghamshire
  • 21/06/2026
Full time Information Technology Telecommunications

Job Description

Salary: £18,000 - 18,900 per year

Requirements
  • STEM degree or equivalent experience
  • One or more major certifications, e.g.: CCNP, VCP, PCNSE, Microsoft Azure Network Engineer Associate, AWS Solutions Architect - Associate
  • Proven experience designing secure enterprise networks across on prem, private cloud, and public cloud
  • Experience with network automation, orchestration, and provisioning
  • Strong datacentre design and infrastructure integration capability
  • Skilled in producing architecture across conceptual, logical, and physical layers
  • Experience leading and developing technical architecture teams
  • Ability to influence senior stakeholders with evidence based recommendations
  • DV clearance required (sole British nationals only)
Responsibilities
  • Design and govern secure network architectures across VMware private cloud, Microsoft on premise, and Azure/AWS
  • Lead creation of scalable, resilient LAN, WAN, hybrid cloud, and datacentre solutions
  • Translate business/security needs into conceptual, logical, and physical architectures
  • Produce high quality HLDs/LLDs aligned to TOGAF
  • Lead and mentor technical architects, providing direction and coaching
  • Act as escalation point for complex technical incidents
  • Evaluate design options and advise on cost, security, quality, and delivery trade offs
  • Design secure architectures, ideally with government/defence exposure
  • Develop DDoS, firewall, WAF, IDS/IPS, EDR/XDR/NDR protection strategies
  • Design business continuity, disaster recovery, and resilient datacentre solutions
  • Review and assure complex solutions for compliance and performance
  • Use operational data to identify optimisation opportunities
  • Maintain technical roadmaps aligned with organisational goals
  • Stay current with emerging tools and technologies
Technologies
  • AWS
  • Architect
  • Azure
  • Cloud
  • Firewall
  • Support
  • LAN
  • Network
  • Security
  • TOGAF
  • VMware
  • WAF
More

We are seeking an experienced Lead Technical Architect with strong networking expertise and end to end datacentre design experience to support a secure government programme. This role is based in the Milton Keynes area and requires on site presence for 3 days each week. We offer a 6 month contract at a competitive day rate of £790 inside IR35. You will work within a high security environment, ensuring the integrity and reliability of our technical architecture.

last updated 25 week of 2026