Lead, Digital & Wholesale Banking at Interswitch

Interswitch Limited is an integrated payment and transaction processing company that provides technology integration, advisory services, transaction processing and payment infrastructure to government, banks and corporate organizations. Interswitch, through its “Super Switchâ€Â provides online, real-time transaction switching that enable businesses and individuals have access to their funds across the 24 banks in Nigeria and across a variety of payment channels such as Automated Teller Machines (ATMS), Point of Sale (PoS) terminals, Mobile Phones, Kiosks, Web and Bank Branches.

To deliver hands-on technical engineering of the Temenos T24 / Transact core banking platform — building, customizing, integrating and tuning the system so that digital and wholesale banking products are delivered to specification, on time and to production-grade quality.
This is a senior individual contributor technical role reporting to the Head, Digital & Wholesale Banking.
Where the Head owns architecture, governance and stakeholder strategy, the Senior Technical Consultant is the senior pair of hands that turns those designs into working, tested, secure code and configuration.
Without this role, technical designs and product requirements would not be reliably engineered into the platform.

Responsibilities 

Technical Delivery & Customization:

Local Development: Build and maintain local developments — Versions, Enquiries, Templates, routines and APIs — using InfoBasic, jBASE and the Temenos Integration Framework (IF), in line with the architecture set by the Head.
Implementation Support: Execute the technical build for T24 implementations, upgrades and module rollouts from development through to post-go-live support.
Standards Adherence: Apply coding, version-control and local-development standards so that work is consistent, reviewable and maintainable.

Module Configuration & Integration:

Module Configuration: Configure and fine-tune core modules supporting corporate lending, trade finance, treasury and digital channels (LD, FT, MD, LC, TR, AC).
Integration Engineering: Engineer secure, real-time interfaces between the T24 core and peripheral systems (payment gateways, CRM and mobile/digital banking apps) using IF and IRIS / APIs.

Quality Assurance & Performance Tuning: 

Testing: Develop and execute Unit, System Integration (SIT) and User Acceptance Testing (UAT) cases for customizations and integrations and remediate defects.
Troubleshooting: Perform root-cause analysis on system errors, performance bottlenecks and database locks, and implement durable fixes.
Performance Tuning: Profile and tune jBASE / TAFJ / TAFC performance to meet availability and response-time targets.

Environment & Release Support: 

Environment Management: Support multi-environment landscapes (Dev, Test, UAT, Production), including code promotion, data migration and environment integrity.
Release & Recovery: Support deployment, release and disaster-recovery activities, contributing to high-availability and business-continuity assurance.

Documentation & Knowledge Sharing: 

Technical Documentation: Produce technical specifications, build notes and user guides for delivered customisations and integrations.
Knowledge Sharing: Mentor junior developers and analysts and contribute to the team’s shared technical knowledge base.

Position in Structure: 

The role reports to the Head, Digital & Wholesale Banking and operates as a senior technical contributor across the following capability areas of the Temenos estate:

Customisation & Local Development: InfoBasic / jBASE development of Versions, Enquiries, Templates, routines and APIs to the governed architecture.
Module Configuration: Configuration and optimisation of wholesale, corporate and digital modules — lending, trade finance, treasury and digital channels.
Integration Engineering: Real-time interfaces between the T24 core and peripheral systems via Integration Framework and IRIS / APIs.
QA, Performance & Environments: Unit / SIT / UAT test build and execution, performance tuning, environment support and release / DR assistance.

Behavioral Competencies: 

Analytical Thinking
Strong problem-solving with the resilience to resolve critical, high-pressure system issues.
Drives Results Delivers quality customisations and fixes to time across multiple concurrent priorities.
Ensures Accountability Takes ownership of code quality, test coverage and the stability of delivered work.
Communicates Effectively Clear written and verbal communication with both technical peers and business analysts.
Optimises Work Processes Continuously improves build, test and deployment practices for reliability and speed.

Skills: 
Temenos Technical Mastery: 

Strong working knowledge of Temenos T24 / Transact architecture, TAFJ / TAFC runtimes and the jBASE database environment.

Development Tools:

Hands-on proficiency in InfoBasic programming, Design Studio, Integration Framework (IF) and the Interaction Framework (IRIS / APIs).

Functional Breadth:

Practical configuration of wholesale and corporate modules (LD, FT, MD, LC, TR, AC) and digital banking interfaces.

Environment & Migration: 

Experience working across Dev / Test / UAT / Production landscapes and executing data migration protocols.

Testing & Tuning: 

Competence in Unit / SIT / UAT design and in performance profiling and tuning.

Requirements

Education: 

General Education Bachelor’s or Master’s Degree in Computer Science, Information Technology, Software Engineering or a related discipline. 
Relevant certifications is expected, such as:

Certified Temenos T24 / Transact Consultant — Technical (highly desirable)
Temenos Integration Framework / Design Studio certification — advantageous
InfoBasic / core-banking development certification — advantageous Experience. General

Experience:

Minimum of 6–8 years’ experience in core banking systems, with at least 3–4 years of hands-on Temenos T24 / Transact technical development, customization and integration.

Managerial Experience: 

No direct management responsibility; expected to provide technical guidance and mentoring to junior developers and analysts and to lead discrete technical workstreams.

KPI Framework: 

Performance is measured across five dimensions spanning build quality, delivery and platform stability:
Build Quality: Defects escaping to production; code-review and standards-compliance pass rate; rework rate on customisations.
Delivery Execution: Assigned customisations, configurations and integrations delivered to plan; on-time, on-spec completion.
Quality Assurance: Unit / SIT / UAT pass rate; test coverage of delivered components; defect remediation turnaround.
Platform Stability & Performance: Incident rate attributable to own work; performance/tuning improvements achieved; database-lock recurrence.
Environment & Documentation: Successful code promotion and migrations; DR-test contribution; completeness of technical documentation.

Reporting line: 

The Lead, Digital & Wholesale Banking (Temenos Transact) reports to the Head, Digital & Wholesale Banking (Temenos Transact Consultant).