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Hi, I’m Makanjuola Oyekola, a Java developer with 4+ years of hands-on experience building backend systems that are clean, scalable, reliable and get things done. I focus on turning complex business needs into working software, designing robust REST APIs, functional databases, and automating tests from end to end. I’ve worked in core banking environments using Temenos Transact T24 (InfoBasic) where accuracy and performance are critical. I’m a believer in simplicity and production-ready code. I collaborate closely with developers, testers, and product teams to deliver real value. I’m not just here to code — I’m here to help build software that actually works for people. I’m relentless when debugging and optimizing CRUD operations, and I enjoy refining code until it runs smoothly in production. I thrive in cross-functional teams and value clear communication. Beyond coding, I aim to build software that helps people and organizations operate better.…Hi, I’m Makanjuola Oyekola, a Java developer with 4+ years of hands-on experience building backend systems that are clean, scalable, reliable and get things done. I focus on turning complex business needs into working software, designing robust REST APIs, functional databases, and automating tests from end to end. I’ve worked in core banking environments using Temenos Transact T24 (InfoBasic) where accuracy and performance are critical. I’m a believer in simplicity and production-ready code. I collaborate closely with developers, testers, and product teams to deliver real value. I’m not just here to code — I’m here to help build software that actually works for people. I’m relentless when debugging and optimizing CRUD operations, and I enjoy refining code until it runs smoothly in production. I thrive in cross-functional teams and value clear communication. Beyond coding, I aim to build software that helps people and organizations operate better.

Makanjuola Oyekola

Back-End Developer, Programmer, QA Engineer

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Hi, I’m Makanjuola Oyekola, a Java developer with 4+ years of hands-on experience building backend systems that are clean, scalable, reliable and get things done. I focus on turning complex business needs into working software, designing robust REST APIs, functional databases, and automating tests from end to end. I’ve worked in core banking environments using Temenos Transact T24 (InfoBasic) where accuracy and performance are critical. I’m a believer in simplicity and production-ready code. I collaborate closely with developers, testers, and product teams to deliver real value. I’m not just here to code — I’m here to help build software that actually works for people. I’m relentless when debugging and optimizing CRUD operations, and I enjoy refining code until it runs smoothly in production. I thrive in cross-functional teams and value clear communication. Beyond coding, I aim to build software that helps people and organizations operate better.…Hi, I’m Makanjuola Oyekola, a Java developer with 4+ years of hands-on experience building backend systems that are clean, scalable, reliable and get things done. I focus on turning complex business needs into working software, designing robust REST APIs, functional databases, and automating tests from end to end. I’ve worked in core banking environments using Temenos Transact T24 (InfoBasic) where accuracy and performance are critical. I’m a believer in simplicity and production-ready code. I collaborate closely with developers, testers, and product teams to deliver real value. I’m not just here to code — I’m here to help build software that actually works for people. I’m relentless when debugging and optimizing CRUD operations, and I enjoy refining code until it runs smoothly in production. I thrive in cross-functional teams and value clear communication. Beyond coding, I aim to build software that helps people and organizations operate better.

Available to hire

Hi, I’m Makanjuola Oyekola, a Java developer with 4+ years of hands-on experience building backend systems that are clean, scalable, reliable and get things done. I focus on turning complex business needs into working software, designing robust REST APIs, functional databases, and automating tests from end to end. I’ve worked in core banking environments using Temenos Transact T24 (InfoBasic) where accuracy and performance are critical. I’m a believer in simplicity and production-ready code. I collaborate closely with developers, testers, and product teams to deliver real value. I’m not just here to code — I’m here to help build software that actually works for people.

I’m relentless when debugging and optimizing CRUD operations, and I enjoy refining code until it runs smoothly in production. I thrive in cross-functional teams and value clear communication. Beyond coding, I aim to build software that helps people and organizations operate better.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Automated Testing Engineer (Freelance) at eHealth4everyone

May 1, 2015 - Present

Developed and deployed a fully automated daily test suite for MSDAT, covering functionality, UI, usability, and performance across 8 dashboards. Scheduled scripts to run every 24 hours via CI/CD, validating data integrity and system responsiveness. Configured automated reporting — emailing daily test summaries and archiving logs/screenshots to Google Drive. Monitored reliability, debugged script failures, and extended coverage across Demographics, Health Outcomes, Facilities, and Financing dashboards. Delivered executive-ready reports with actionable diagnostics.

Technical Consultant (Web / Banking App Dev QA Automation Temenos T24 Specialist) at ITSS -GLOBAL LLC

November 1, 2022 - May 1, 2025

Delivered bank-grade software and tested critical banking applications. Developed and maintained responsive web app functionalities using JavaScript; designed manual and automated test suites (Selenium/TestNG); authored detailed test plans; led UAT planning and continuous testing for Temenos Infinity (Spotlight, Online Banking). Performed regression testing, optimized Temenos T24 routines, and collaborated in Agile sprints and code reviews.

Associate Software Engineer (Java Backend | Spring Boot | SQL) at DECAGON

November 1, 2021 - October 1, 2022

Delivered production-ready code; developed features using Java and Spring Boot; built and tested full-stack solutions, including REST APIs and database interactions with MySQL; wrote and optimized SQL queries; integrated log4j for logging and monitoring; used Git for version control.

Application Hosting Service Officer (Cloud Systems Engineer | IT Infrastructure Specialist) at NIGERIA NATIONAL PETROLEUM COMPANY, Ltd.

April 1, 2019 - October 1, 2021

Kept business-critical systems running; supported 100+ users; provisioned and managed cloud resources via Active Directory; resolved outages to maintain 98% uptime for data center operations.

Technology Analyst (Cloud Solutions Engineer | Education Technology Specialist) at FERTILE-TECH BUSINESS SYSTEMS

December 1, 2012 - November 1, 2014

Delivered enterprise-edtech solutions; deployed and managed G Suite for Education for 3,000+ users; launched GEARS SaaS platforms on Google App Engine; engineered data migration with 100% integrity; trained 21 computer science students; led digital transformation initiatives.

Portal Admin/ICT Support Analyst (Systems Architect | Data Solutions Lead | Infrastructure Specialist) at DERITECH SOLUTIONS Ltd

July 1, 2010 - October 31, 2012

Delivered bulletproof data systems for offline-first data capture; managed 400+ WAMP-based PCs; optimized LAN/Wi-Fi connectivity; implemented adaptive data uploads to global servers; conducted UAT and portal access training for 200+ HRPs; oversaw hardware/software provisioning.

Data Manager (Data Solutions | Research Ops Lead) at PATHS 2

August 1, 2009 - October 30, 2009

Led a team in coding open-ended survey responses and structuring data based on analytical models; transformed qualitative data into quantifiable insights.

System Administrator/Network Support (Network Infrastructure Admin | VSAT Intern) at IT PLUS Ltd.

December 1, 2007 - February 1, 2008

Engineered connectivity solutions; performed foundational networking tasks; configured and maintained VSAT networks; hardened security across hardware and protocols; supported remote field locations.