Application Developer

Role Title: Application Developer

Location: Sheffield (3 days onsite is mandatory)

Rate: £400 - £475

Role Summary We are looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures . This role focuses on building secure, scalable identity and access workflows across Google Cloud Platform, integrating identity services with custom APIs, Pub/Sub pipelines, and cloud-native applications.

You will collaborate closely with tech leads, Cloud Security, DevOps, and Application

Engineering teams to design and implement robust IAM automation, identity life cycle workflows, and secure service integrations that support enterprise-level cloud and Identity operations.

Key Responsibilities

Identity Orchestration

Design and implement identity flows for provisioning, de-provisioning and orchestration of identity life cycle events.

Integrate with Cloud Identity Services, ServiceNow, and internal services to streamline/orchestrate identity provisioning and identity life cycle management.

Build policy-based orchestration workflows for adaptive authentication and contextaware access using industry standards (like OPA).

API Development

Design, build, and secure RESTful APIs and Back End services supporting identity, provisioning, and governance workflows.

Integrate APIs with our new authentication service for token validation, user sessions, and application-level authorization.

Build and document internal SDKs, Middleware, and shared libraries for consistent IAM logic across services.

Ensure API security, performance, reliability, resilience, and observability.

API-to-Pub/Sub Event Processing

Develop pipelines where API events publish to Pub/Sub for asynchronous workflows such as:

o automated identity life cycle tasks o access review event triggers o logging and audit forwarding o security anomaly detection

Build Cloud Functions, Cloud Run microservices, or containerized services to process Pub/Sub messages.

Implement robust event-processing patterns including retries, idempotency, DLQs, and structured lo...