API Integration Engineer Project Based

Were hiring an API Integration Engineer to own our ATS/HRIS integrations end-to-end: from designing secure REST APIs and webhooks to delivering certified connectors (e.g. Workday Greenhouse Lever) and partner enablement assets (Postman collections docs sample code). Youll translate client we need an API requests into clear reliable integrations that recruiters can use without leaving their ATS.

What Youll Do (Key Responsibilities):
- Design and implement Prisma Integration Spec (v1) across environments (sandbox & production).
- Build and maintain REST endpoints (/orders /packages /reports /documents) and webhooks (status completion adverse action).
- Implement OAuth2 client-credentials HMAC-signed webhooks idempotency keys and retry logic.
- Ship hosted candidate flows hand-off (invite links) and optional document handoff (pre-signed URLs).
- Deliver results write-back (status deep link PDF JSON summary) into ATS/HRIS.
- Produce developer assets: OpenAPI spec Postman collection sample payloads code snippets and a clean docs site.
- Work with partners (Workday/Greenhouse/etc.) on field mappings and certification checklists.
- Own observability (metrics logs alerts) webhook DLQs and incident runbooks with clear SLAs.
- Champion security & compliance (PII minimization audit logs regional residency ISO 27001/SOC2 practices).

Must-Have Qualifications:
- 48 years building B2B integrations/APIs with modern stacks (Node/TypeScript Python Go Java or similar).
- Strong in Workflow Automation (such as: n8n or similar) REST/JSON/SOAP integration OAuth2 webhooks HMAC signatures and SAML/OIDC (SSO)
- Hands-on with cloud storage pre-signed URLs file validation/antivirus and secure document processing.
- Experience with OpenAPI/Swagger Postman and automated testing of APIs.- Practical knowledge of event-driven design (queues retries idempotency) and observability (Grafana/ELK/Datadog).
- Excellent system-design and clear technical writing skills (developer docs runbooks).

Nice-to-Have
- Prior work with ATS/HRIS (Workday Greenhouse Lever iCIMS) or HR-Open/HR-XML mappings.
- Background in eKYC/ID verification security/compliance or background screening workflows.
- Knowledge of Indonesia/Southeast Asia HR & data-protection contexts.
- Infra familiarity: Azure/AWS containers CI/CD secrets management.

Location & Type
- Jakarta (preferred) / Remote within WIB time zone
- Full-time (contract/freelance/consultant)

If you meet these requirements and you are looking for a new exciting opportunity within a successful growing company then this role is for you!

Integrity Indonesia is an equal opportunity employer.

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Integrity Indonesia is a foreign investment company that has operated since 2001 in Indonesia and with established affiliates in Malaysia and Thailand. Our business is to provide services related to the Prevention Detection and Investigation of risk.
As a rapidly expanding company with a robust business plan Integrity Indonesia is looking for self-motivated and results-oriented individuals with solid qualifications who enjoy the challenge to grow and succeed.