Application Developer
Posted 4 days ago by Vanloq - Workforce Solutions
Negotiable
Inside
Hybrid
Sheffield, England, United Kingdom
Summary: The Application Developer role focuses on building modern, cloud-native identity and access management capabilities within a leading financial services organization. The position involves developing secure identity APIs and event-driven workflows on Google Cloud Platform, collaborating with various engineering teams to deliver scalable identity services. This contract role is set until the end of the year and is classified as inside IR35. The developer will play a crucial role in enhancing enterprise-scale identity lifecycle management and access orchestration.
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
Key Skills:
- 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
Salary (Rate): undetermined
City: Sheffield
Country: United Kingdom
Working Arrangements: hybrid
IR35 Status: inside IR35
Seniority Level: undetermined
Industry: IT
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.