Website Tezza Business Solutions Ltd
Tezza Business Solutions Ltd is a "niche” service provider of Software Development, Quality Assurance and Software Testing services. Tezza began its operations as Web Development company in 2000 in Overland Park, Kansas. Since then, we’ve evolved into a Services-oriented company who only engage … read morein Product development as a value-add service to our customers who continue to appreciate our "Customer First” Service Delivery approach. Tezza opened its first office in Kenya in 2009 with a primary goal of building capacity of qualified software development and testing resources to work on outsourced projects from North America. Whilst we are partners and reseller of solutions today, our primary interest is in providing services; the products we sell are sold in conjunction with the services we provide. Since 2009, Tezza has grown in size and reputation with over 150 resources and offices in key 4 East and West African countries – Kenya, Nigeria, Tanzania and Uganda. Tezza has now become the #1 QA and Software Testing Company in East Africa providing services to companies within the Banking, Insurance, Healthcare and Telecommunication market verticals.
The Integration/API Tester is responsible for validating integrations between the core banking system (T24/Temenos) and surrounding systems such as mobile banking, internet banking, payment gateways, and third-party services. The role ensures seamless, secure, and accurate data exchange across all integrated platforms.
Key Responsibilities
Design and execute integration and API test cases for T24 interfaces
Validate APIs supporting channels such as mobile banking, agency banking, and internet banking
Perform end-to-end testing of transactions across systems
Validate ISO 8583 / ISO 20022 message formats where applicable
Test integrations with payment switches, middleware, and third-party systems
Analyze API documentation and derive comprehensive test scenarios
Perform data validation between T24 and interfacing systems
Identify, log, and track defects
Support SIT and pre-UAT phases
Collaborate with developers, business analysts, and vendors
Key Requirements
Bachelor’s degree in IT, Computer Science, or related field
3–6 years’ experience in API/Integration testing within banking systems
Hands-on experience with T24/Temenos integrations
Strong understanding of REST/SOAP APIs
Experience with Postman or SoapUI
Knowledge of JSON, XML, and message validation
Understanding of banking transaction flows
Basic SQL skills
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