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VANLOQ LIMITED
Application Developer
Private salary
Sheffield
Hybrid
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Leader
Description
Application Developer Identity & API Engineering (Contract)
Location: Hybrid Sheffield
Contract: Until end of year (Inside IR35)
Sector: Financial Services
We are working with a leading financial services organisation who are looking to engage a highly skilled Application Developer to support the build-out of modern, cloud-native identity and access management (IAM) capabilities.
This contract role is focused on developing secure identity APIs, event-driven workflows, and automation across Google Cloud Platform, supporting enterprise-scale identity lifecycle management and access orchestration.
You will work closely with cloud security, DevOps, platform, and application engineering teams to deliver scalable, secure identity services in a fast-paced, regulated environment.
Key Responsibilities
Design and implement identity lifecycle workflows covering provisioning, de-provisioning, and orchestration
Build secure, scalable RESTful APIs supporting identity, access, and governance use cases
Integrate APIs with authentication and token services using OAuth2, OIDC, JWT, and federation standards
Develop event-driven architectures using Pub/Sub to support asynchronous identity and access workflows
Build cloud-native services using Cloud Run, Cloud Functions, GKE, or containerised workloads
Implement Infrastructure as Code using Terraform for IAM, APIs, Pub/Sub topics, and permissions
Support CI/CD pipelines, automated testing, and validation of IAM policies and API behaviour
Troubleshoot identity, access, and API issues across distributed systems
Collaborate with security teams on audits, compliance, and incident investigations
Produce clear technical documentation and reusable components
Required Experience
Strong experience building identity-focused APIs and workflows
Hands-on experience with identity orchestration platforms (e.g. Auth0 Actions, Okta Workflows, WorkOS, SlashID)
Strong programming skills in Python, Go, Java, or Node.js
Solid understanding of event-driven architectures, Pub/Sub, and message processing patterns
Proven experience with cloud-native development on GCP
Good knowledge of Terraform or equivalent IaC tooling
Experience with API gateways, service mesh, or reverse proxies
Strong understanding of security-first design principles in enterprise environments
Nice to Have
Experience with additional identity providers (Okta, Azure AD, Ping Identity)
Exposure to Kubernetes (GKE, workload identity, RBAC)
Experience with secrets management tools (Vault, Secret Manager)
Familiarity with compliance frameworks such as SOC2, ISO 27001, or PCI
Why Apply?
Contract through to year-end with extension potential
Hybrid working from Sheffield
Inside IR35 engagement
Opportunity to work on large-scale identity and access platforms
High-impact role within a major financial services transformation programme
If you are an Application Developer with strong identity, API, and cloud experience looking for your next contract role, please apply or get in touch for more details.
Role tech stack
Processing
Terraform
Kubernetes
Java
OAuth2
Vault
JWT
VANLOQ LIMITED
Application Developer
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