Senior IT Architect; Enterprise​/Clinical Platforms

Role Summary

Ontada is an oncology data science and technology business dedicated to transforming the fight against cancer. We are hiring an IT Architect to define and drive cloud-native integration architecture across Ontada products and partner ecosystems. This role owns solution and platform architecture for API-led connectivity, event-driven integration, and secure data exchange—ensuring our systems are scalable, reliable, observable, and straightforward to evolve.

Familiarity with healthcare interoperability standards (HL7/FHIR, including SMART on FHIR) is a plus; the primary focus is strong enterprise-architecture fundamentals applied to modern cloud-native integration models. Success in this role is measured by the clarity and adoption of reference architectures and standards, the reliability and scalability of the integration ecosystem, and the ability to influence decisions across multiple initiatives while mentoring engineering teams.

• Cloud‑Native Integration: API‑led connectivity, event-driven architecture, pub/sub, schema management, idempotency, retries, back pressure
• APIs: RESTful services, OpenAPI/Swagger, API gateways, versioning and contract-first design
• Messaging:
  Kafka (or equivalent), queues/streams, event schema design
• Platform Patterns:
  Microservices, containerization (Docker), service discovery, configuration management; service mesh (where applicable)
• Data & Performance:
  Oracle and relational databases;
  Redis (caching);
  Elasticsearch; analytics/pipelines (e.g., Databricks)
• Interoperability (nice to have): HL7v2, FHIR (R4+), SMART on FHIR, OAuth2/OIDC, C-CDA
• Observability:
  Logging, metrics, distributed tracing (e.g., Dynatrace)
• Cloud & Platforms:
  Azure, AWS, GCP, Cloud Foundry
• Engineering Practices: CI/CD, automated testing, code reviews, architecture documentation

• Architecture Leadership & Strategy – Drive architecture for interoperability and integration capabilities across systems, services, and product offerings. Partner with Product Owners, Sales, Business Analysts, QA, and Project Management to translate functional and non-functional requirements into target architectures and delivery plans.
• Define architecture standards, reference implementations, and guardrails for APIs, integration patterns, security, and operational readiness.
• Evaluate solution options and drive alignment across stakeholders; communicate trade-offs, risks, and recommendations to technical and non-technical audiences.
• Provide technical guidance to coach, motivate, and develop engineers and architects.
• Cloud-Native Integration Architecture – Define and govern integration reference architectures across APIs, events, and asynchronous workflows. Establish platform patterns and guardrails for API gateways, service-to-service communication, schema/version management, and contract testing.
• Design for resiliency and performance using proven patterns (timeouts, retries, circuit breakers, bulkheads, idempotency, caching) and align to SLOs/SLAs.
• Guide event-driven integration (e.g., Kafka or equivalent) with well-defined event schemas, lifecycle management, and operational controls.
• Collaborate with security and platform teams to ensure secure-by-default integration approaches (OAuth2/OIDC, least privilege, secrets management, threat modeling).
• Healthcare Interoperability & Partner Integrations (Optional) – When applicable, drive design for healthcare data exchange leveraging HL7v2 and/or FHIR (R4+), including SMART on FHIR, to enable integrations with EMRs and partner systems.
• Partner with domain SMEs and external stakeholders to define interoperability expectations (security, conformance, onboarding) and ensure integrations are scalable and supportable.
• Define API contracts, versioning strategy, and error taxonomy to enable predictable integrations for internal and external consumers.
• Partner with engineering teams to implement and evolve reusable integration components, adapters, and accelerators that reduce time-to-integrate.
• Operational Excellence & Production Ownership – Collaborate with engineering in release, sprint, and project planning to ensure delivery commitments are…