Mid-Level API Developer - Onsite - KSA Octopus RTG

Robusta Technology Group (RTG) is a key driver of digital transformation by providing a holistic tech ecosystem. RTG works with its local and international partners to help build digital customer experiences, establish engineering hubs and build ventures across multiple industries and domains. In this pursuit, RTG serves as a catalyst for impact and growth through events, spaces and content focused on creating impact and growth across the different interactions.

Octopus is proud to be part of the Robusta Technology Group (RTG), a leading tech consultancy group. With a decade of experience and a successful track record of delivering over 300 projects across Europe, the Middle East, and North America, RTG has established itself as a preferred employer in the Egyptian market. Octopus and Robusta are building a bridge between Europe and Africa, creating tailored hub solutions to connect companies with top talent across the globe.

We are looking for an
API Developer (Integration Engineer)to design, build, and maintain the integration layer connecting a digital Residents and Tenants Portal with various third-party and enterprise systems.

You will be responsible for developing secure and reliable APIs and middleware that enable key platform capabilities including authentication, e-signature, payments, access control, CRM integrations, and notifications.

The ideal candidate has strong experience in backend development and API integrations, with a solid understanding of API security, authentication protocols, webhooks, and event-driven architectures.

• Design, develop, and maintain RESTful APIs and integrations with third-party and enterprise systems.
• Integrate with identity and authentication providers to support SSO, 2FA, password reset, and session management.
• Develop integrations with e-signature platforms such as Docu Sign or similar solutions to support contracts, addendums, and termination workflows.
• Integrate with CRM and leasing systems to synchronize unit listings, inquiries, leads, offers, and other relevant data.
• Develop integrations with access-control systems for access cards, visitor codes, and vehicle registration.
• Support payment and invoicing integrations, including invoice generation triggers, proof-of-payment workflows, and payment-status synchronization.
• Integrate with email and SMS notification gateways for alerts, confirmations, and renewal notifications.
• Integrate external data feeds, such as weather and events APIs, where required.
• Build middleware and orchestration logic to keep data and application states synchronized across multiple systems.
• Define and maintain API contracts using
  OpenAPI/Swagger
  .
• Implement secure authentication and authorization mechanisms using
  OAuth2, OIDC, and JWT
  .
• Design robust error-handling, retry, and recovery strategies for integrations.
• Implement webhook and event-driven handlers for asynchronous workflows such as e-signature completion, payment confirmation, and access-control approvals.
• Coordinate with internal teams, client IT teams, and third-party vendors to manage integration environments, credentials, and API access.
• Support the promotion of integrations from sandbox/testing environments to production.
• Develop integration, API, and contract tests and support QA and UAT activities.
• Monitor API performance, logs, and error rates and troubleshoot integration issues during production and hypercare periods.
• Maintain technical documentation, integration architecture diagrams, and operational runbooks to support knowledge transfer and handover.
• Collaborate with developers, QA engineers, product teams, and external vendors to ensure successful delivery of integration-dependent features.

• 4+ years of experience
  in API development, backend development, or integration engineering.
• Strong hands-on experience building and consuming
  REST/JSON APIs
  in production environments.
• Solid understanding of
  OAuth2, OIDC, JWT
  , and webhook-based architectures.
• Experience integrating with at least one e-signature platform such as
  Docu Sign, Adobe Sign
  , or a similar solution.
• Hands-on experience with
  SSO and identity providers
  such as Azure AD, Okta, Auth0, or similar.
• St…