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SENIOR INFRASTRUCTURE ARCHITECT (LLD)

Company: Duncan & Ross

Location: Alger Centre, London

Posted: June 18, 2026

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Position Details

Job Summary

We are seeking an experienced Senior Infrastructure LLD Architect to produce Low Level Design documentation for a large-scale banking infrastructure project. The engagement is remote, contract-based (2 months), and requires immediate availability. The candidate will work as part of a delivery team supporting a structured infrastructure rollout, covering Active Directory, Identity & Access Management, Endpoint Security, PKI, PAM, SIEM, Windows Infrastructure, Provisioning, and ITSM platforms within secure, highly available enterprise environments.

This is a delivery-focused role. Senior professionals only — 10+ years minimum.

Key Responsibilities

  • Produce detailed Low Level Design (LLD) documents and architecture governance artifacts across assigned infrastructure domains.
  • Design and implement Active Directory (AAA) architectures, including multi-forest environments, tenant isolation, RBAC, delegation models, and s...