DGH Recruitment
Application Engineer
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Application Engineer
Role Overview:
The Application Engineer will be responsible for the end-to-end migration and remediation of applications impacted by identity, directory, domain, DNS, certificate, or Single Sign-On (SSO) changes as part of the merger programme.
The Application Engineer will act as the technical owner for assigned applications, taking responsibility for understanding application architecture, authentication methods, permission models, DNS dependencies, certificate requirements, vendor relationships, and business impacts to support successful migration and remediation activities.
Required Technical Skills:
- Enterprise applications integrated with Active Directory or Microsoft Entra ID
- Application authentication, authorisation, and access control models
- Single Sign-On (SSO) technologies including SAML 2.0, OpenID Connect, and OAuth
- Experience configuring, troubleshooting, and remediating SAML, OpenID Connect, and OAuth integrations
- DNS concepts including application-related DNS records, name resolution, and dependencies
- Experience managing application-related DNS changes, including DNS record updates, validation, troubleshooting, and dependency analysis
- SSL/TLS certificate management and application certificate dependencies
- Active Directory users, groups, service accounts, and permissions
- Application re-permissioning following identity, domain, or directory changes
- Application architecture, dependency mapping, and impact analysis
- SQL Server and relational database concepts including databases, schemas, tables, views
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Key Responsibilities:
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- Take ownership of applications assigned for migration or remediation
- Assess application architecture, authentication methods, permissions, integrations, and dependencies
- Identify impacts resulting from domain, identity, DNS, certificate, or SSO changes
- Define and coordinate application migration and remediation activities
- Assess and implement SSO remediation activities required to support domain, identity, tenant, or email address changes
- Support DNS remediation activities, including identifying, validating, and coordinating application-related DNS changes
Required Experience:
- Experience supporting application migrations, merger programmes, or large-scale transformation initiatives.
- Experience assessing application architecture, authentication methods, permissions, integrations, and technical dependencies.
- Experience delivering remediation activities related to identity, Active Directory, Entra ID, SSO, DNS, certificate, and domain changes.
- Experience supporting applications with SQL Server or other relational database back ends, including connectivity, authentication, service accounts, and dependency analysis.
- Experience supporting web-hosted applications, IIS, SSL/TLS certificates, load balancers, reverse proxies, and related infrastructure components.
- Experience working across Application, Identity, Active Directory, Entra ID, DNS, PKI/Certificate, SQL/Database, Networking, Infrastructure, and Vendor teams.
- Experience coordinating technical and business stakeholders to deliver application changes and migration activities.
- Experience supporting testing, cutover, production implementation, and post-migration support within large enterprise environments.
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