Senior Application Architect (Legacy Estate, Dependency Analysis)

Job description

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