Lead Technical Architect

Company: Sivara GmbH
Apply for the Lead Technical Architect
Location: Milton Keynes
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

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Posted: June 21st, 2026