Senior Application Architect (Legacy Estate, Dependency Analysis)

We are looking for a Senior Application Architect to support a technical discovery engagement, mapping dependencies across a large, heterogeneous, and partly undocumented application estate for a UK enterprise client.

Project: A ten-week discovery and technical assessment engagement focused on application and infrastructure dependency mapping — spanning protocols, service accounts, certificates, and a multi-version .NET estate — ahead of a remediation roadmap.

Responsibilities:
Assess dependencies across protocols, runtimes, service accounts, and certificates
Evaluate deprecated configuration dependencies (TLS 1.0/1.1, SMB, NTLMv1, 3DES) currently gating thousands of findings
Build a service account map to enable safe password policy enforcement without causing outages
Support certificate consumer mapping to identify pinned and mutual-TLS integrations ahead of certificate re-issuance
Assess a multi-version .NET estate with no clear documented requirements
Distinguish genuinely active systems from dormant ones, including decommissioning as a valid remediation route
Support shadow IT discovery across the estate

Requirements:
7+ years of experience in application architecture assessment across heterogeneous enterprise estates
Proven ability to establish dependency positions in the absence of documentation
Experience distinguishing active from dormant systems and recommending decommissioning where appropriate
Experience with shadow IT discovery
Working knowledge of Windows Server and Red Hat Enterprise Linux, sufficient to reason about application-to-platform coupling
Strong analytical mindset, able to work confidently with incomplete or conflicting source data
Upper-Intermediate English or higher

What We Offer:
Transparent strategy and thoughtful management that keep everyone aligned
Space for personal growth and career development without limits
A culture of continuous learning: internal courses, workshops, and English classes twice a week
Skill up events where we share experience and stay on top of trends
Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
Team spirit that thrives through regular events, gatherings, and celebrations