API Specialist (Integration, Middleware & Data Flows) (Onsite – JHB) (Contract)

API Specialist (Integration, Middleware & Data Flows) (Onsite – JHB) (Contract) Datafin R Undisclosed Contract Senior position Johannesburg Posted 19 Apr 2026 by Datafin Expires in 15 days Job 2636452 Save Apply Now About the position ENVIRONMENT: A purpose-driven conservation organisation operating across 13 African countries is building a unified, data-driven platform to support ecological, operational, and financial decision-making. Their environment is highly complex, consisting of interconnected systems operating across remote regions with intermittent connectivity. They are seeking an API Specialist to focus on designing, building, and maintaining integration layers between systems, devices, and their central data warehouse. This role forms a critical part of breaking down the broader Enterprise Architecture function into focused delivery components DUTIES: Design, build and maintain APIs and middleware for system integrations Enable secure, reliable data flow between systems and the central data warehouse Develop and manage store-and-forward / offline-first integration patterns Implement error handling, monitoring, and retry mechanisms across integrations Collaborate with BI, IT, and system owners to ensure data consistency and integrity Document API structures, data mappings, and integration logic Support data ingestion pipelines into downstream platforms Work closely with vendors to ensure integration standards are met REQUIREMENTS: 4+ years’ experience in API development and system integration Strong experience with REST APIs, middleware, and distributed systems Experience with data pipelines and system-to-system integrations Solid understanding of data structures, transformations, and validation Experience working in cloud or hybrid environments Ability to troubleshoot and resolve integration and data flow issues Advantageous: Experience with event-driven architecture (queues, messaging systems) Exposure to IoT integrations or device data ingestion Knowledge of offline-first or low-connectivity environments ATTRIBUTES: Strong problem-solving and analytical mindset Detail-oriented with strong documentation ability Ability to work across teams and systems Comfortable in complex, evolving environments Desired Skills: REST API Solving Problems Systems Integration About The Employer: Our client is a mission-driven conservation organisation focused on the management and rehabilitation of protected areas across Africa. Apply Now Datafin View agency profile See all Datafin jobs About the agency Datafin Recruitment was established in 1999 and is one of South Africa’s leading Recruitment companies. Owned and managed by two sisters Lindy and Bev Sollinger, we focus on connecting with both our clients and candidates in an authentic conscious meaningful manner. We focus on the Tech, Digital/Online, Data, Finance and HR industries. read more read less Receive a daily digest of all new jobs matching this job. Your information is safe with us and you can cancel any time. EMAIL ME JOBS LIKE THIS Please enter your email address Please enter a valid email address Expires in 15 days