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Build & Deployment Engineer

Job in City of London, Central London, Greater London, England, UK
Listing for: Deerfoot Recruitment Solutions Limited
Full Time position
Listed on 2026-09-28
Job specializations:
  • Software Development
Job Description & How to Apply Below
Position: Build & Deployment Engineer
Location: City of London

Build & Deployment Engineer - C#/.NET, Octopus Deploy & Secure Coding
City of London - Hybrid (4 Days on-site, 1 day WFH each week)
Inside IR35 Contract

Are you a build and deployment engineer who can open up the C# code behind a pipeline and fix it yourself? That combination is exactly what's needed here.

You'll join the Platform Engineering function of one of the world's largest financial groups, owning the on-premises toolchain that takes software from source code to production. Git Hub Enterprise, Team City, JFrog Artifactory and Xray, and Octopus Deploy, all integrated with Service Now change and vulnerability management. In a regulated banking environment, every build and deployment has to be secure, repeatable, traceable and auditable - and making that happen is your job.

Alongside the platform work, you'll take technical ownership of secure coding standards: turning security policy into practical engineering controls that development teams inherit by default, rather than having to build for themselves. There's also a live migration of applications from legacy tooling onto Octopus Deploy to get stuck into.

What You'll Be Doing

Engineering, administering and supporting the on-premises build, packaging, artefact and deployment toolchain
Building and maintaining automated CI/CD pipelines and standard templates for application teams, across Windows and Linux environments
Writing, reviewing and troubleshooting the C#/.NET code behind internal deployment integrations, APIs and automation tooling
Diagnosing complex build and deployment failures across code, dependencies, build agents, artefact repositories and target environments
Migrating applications from legacy deployment tooling onto Octopus Deploy
Defining and embedding pipeline security controls - SAST, SCA, dependency scanning, secrets detection and artefact scanning (Git Hub CodeQL, Dependabot, JFrog Xray and Curation)
Managing software supply-chain controls: approved repositories, open-source governance, package lifecycle, traceability and SBOM
Integrating deployment automation with change and release management, including segregation of duties and audit evidence
Working with Cyber Security, Risk and Control and development teams to onboard applications and remediate vulnerabilities
Supporting platform upgrades, patching, resilience, DR, monitoring and incident response

What You'll Bring

Strong hands-on experience of enterprise software build, packaging and deployment engineering
Strong C# development skills and a solid understanding of .NET Framework and modern .NET build and deployment - this is essential
Practical experience with Visual Studio, MSBuild, NuGet, IIS, Windows services and REST APIs
Administration or engineering experience with at least two of:
Octopus Deploy, Team City, Git Hub Enterprise, JFrog Artifactory, JFrog Xray, Azure Dev Ops Server
Strong Power Shell, plus working knowledge of Bash/shell scripting
Good understanding of Git workflows, artefact repositories, package versioning and environment promotion
Experience implementing secure coding controls (SAST, SCA, secrets detection) and a good grasp of secure development principles, including authentication, secrets management, certificates and TLS
Windows Server and on-premises hosting knowledge, working knowledge of Linux deployment patterns, and SQL Server database deployment (e.g. DACPAC)
Experience working within formal change, incident and release management in a controlled, regulated environment
Desirable: ASP.NET/ASP.NET Core, Entity Framework, NUnit/xUnit, Service Now integration, Terraform, Docker/Kubernetes, OWASP, SBOM standards, Cyber Ark This  is a chance to own the build and deployment platforms at the heart of a top-tier financial services technology function, and to shape how secure coding is done across it. Click apply now to submit your CV, or get in touch for a confidential conversation about the role before you do.

If you've held any of these roles or used these technologies/skills, this role could be a great fit:
Build Engineer, Release Engineer, Deployment Engineer, Build & Release Engineer, Dev Ops Engineer, Dev Sec Ops  Engineer, CI/CD Engineer, Platform Engineer, Software Configuration Manager, Release Manager, Application Security Engineer, .NET Developer, C# Developer, Octopus Deploy Engineer, Team City Administrator, JFrog Artifactory Administrator, Git Hub Enterprise Administrator, Azure Dev Ops Engineer, Power Shell Automation Engineer.

Deerfoot Recruitment Solutions Ltd is a…
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