Ugochukwu Christopher Onwubuyah
Lagos
Summary
Results-driven Software Quality Assurance Engineer with extensive experience at eTranzact International PLC. Expert in API testing and performance testing, I excel in identifying and resolving defects, ensuring application reliability. My strong analytical skills and collaborative approach have led to successful project outcomes across multiple platforms, enhancing user satisfaction and operational efficiency.
Overview
14
14
years of professional experience
1
1
Certification
Work History
Software Quality Assurance Engineer
eTranzact International PLC
01.2020 - Current
- Collaborated with 12-member project and development teams within an Agile software development framework.
- Possess in-depth knowledge of the entire application life cycle, including requirements gathering, design, development, deployment, and maintenance.
- Facilitated and led over 30 daily project stand-up meetings to ensure seamless communication and project progress.
- Conducted extensive functional testing, including: User Acceptance Testing (UAT), Regression Testing, Integration Testing.
- Executed various non-functional tests across 6 projects, including: Performance Testing, Load Testing, Stress Testing, Volume Testing, Usability Testing, User Interface (UI) Testing.
- Analyzed and reviewed over 19 business and system requirements/specifications to ensure alignment with project goals.
- Identified and reported bugs/defects for over 34 projects to the development team, enabling timely resolutions.
- Managed the bug resolution process by: Retesting applications after bug fixes, Updating bug statuses, Reporting progress to the project team.
- Led test-driven development for several critical applications, including: Payment subscription renewal system, Mobile banking applications, Merchant management applications, User and transaction management system, Suspected fraudulent activity detection system.
- Ensured the reliability of live applications, with some running for over two years without failure due to bugs.
- Conducted extensive tests on the payment switch, ensuring optimum performance, ensuring transactions that should be flagged as suspicious transactions, are flagged as such, and transactions that should be blocked are blocked.
Software Quality Assurance Tester
ESDIAC Nigeria Limited
01.2017 - 01.2020
- Executed comprehensive User Acceptance Testing (UAT) to ensure applications met business requirements and were fit for end-user use.
- Conducted detailed Usability Testing to validate user experience, ease of navigation, and overall interface efficiency.
- Demonstrated a deep understanding of the entire application development life cycle, including: Design: Collaborated with cross-functional teams to ensure user-centric application design, Development: Monitored and supported development processes to align with quality assurance standards, Deployment: Verified application readiness and functionality before deployment to production environments, Maintenance: Conducted post-deployment testing and monitored applications for long-term reliability.
- Identified, documented, and reported software defects to the development team using clear, actionable, and prioritized reports to expedite resolution.
- Maintained and managed an extensive library of test scripts to ensure comprehensive test coverage and adaptability to evolving project requirements.
- Regularly updated test scripts to align with changes in application features, functionality, and client expectations, ensuring accurate and effective testing practices.
Full Stack Developer
Freesia Networks
01.2015 - 12.2015
- Designed, developed, and maintained robust Content Management Systems (CMS), including the creation and customization of plugins, modules, and themes to enhance functionality and user experience.
- Developed and implemented responsive designs to ensure seamless performance across mobile, tablet, and desktop browsers, prioritizing accessibility and usability.
- Performed regular maintenance, updates, and bug fixes on the backend of existing web applications to enhance stability, functionality, and performance.
- Optimized website performance for maximum speed, scalability, and efficient resource utilization by implementing best coding practices and optimization techniques.
- Designed and updated website layouts and user interfaces using HTML, CSS, and industry-standard practices, ensuring visually appealing and user-friendly designs.
- Ensured the CMS platforms were intuitive, user-friendly, and easy to navigate, enabling non-technical users to manage content efficiently.
- Conducted regular performance testing, debugging, and cross-browser compatibility checks to deliver high-quality, reliable web applications.
- Collaborated with cross-functional teams to align website functionality and design with business goals and user expectations.
Full-stack Developer
Swap Space Systems
01.2012 - 12.2012
- Built the structural framework for various web applications, ensuring scalability, maintainability, and adherence to best practices.
- Demonstrated proficient understanding and application of HTML and CSS for creating responsive and visually appealing web designs compatible with various devices.
- Validated user inputs on the front end to ensure data integrity and compliance before submission to the backend.
- Leveraged strong expertise in PHP6 and MySQL5 to develop dynamic, database-driven web applications.
- Implemented secure user authentication by generating unique session IDs for each user during login, ensuring personalized and secure access.
- Maintained user-specific data across multiple web application pages by verifying session IDs before granting access, ensuring data integrity and session security.
- Designed robust authorization mechanisms to restrict user access to privileged pages, preventing unauthorized access and enhancing application security.
- Ensured secure session termination by destroying session IDs upon user logout, mitigating risks of session hijacking.
- Created, managed, and optimized databases for web applications, ensuring stability, reliability, and high performance.
- Ensured high application performance and responsiveness by optimizing queries and backend processes to handle front-end requests efficiently.
- Implemented stringent database security measures, including: Preventing unauthorized users from fetching information from the database, Restricting unauthorized users from writing into or modifying database content.
- Conducted regular database maintenance, performance tuning, and security audits to ensure consistent application reliability and data integrity.
Education
Computer Science -
Babcock University
Ogun, Nigeria07-2014
Skills
- API testing (Postman)
- Performance, load, and stress testing
- Mobile application testing (Appium)
- Web application testing (Selenium, Playwright, Cypress)
- Programming languages (Java, C)
- Scripting languages (PHP, Python, JavaScript)
- Database systems (MS SQL, MySQL, Oracle, MongoDB)
- Markup languages (HTML, CSS)
- Content management system development
- Jira for bug tracking
- Business specification document analysis
Websites
Certification
- HackerRank | Problem Solving (Basic), 02/01/25
- HackerRank | SQL Advanced, 02/01/25
- HackerRank | SQL Intermediate, 01/01/25
- HackerRank | SQL Basic, 01/01/25
- HackerRank | Python Basic, 01/01/25
- HackerRank | Java Basic, 01/01/25
- HackerRank | Software Engineer, 01/01/25
- HackerRank | Software Engineer Intern, 01/01/25
- Udemy Deep Learning: Convolutional Neural Networks in Python, 07/01/22
- Udemy | Software Testing, 07/01/22
- Anarctic Technologies Ltd | Java Secure Coding, 09/01/21
- Trader's Ball | Lagos Digital Marketing Training, 12/01/19
- Computer Professionals of Nigeria | Graduate, 06/01/14
- New Horizons | MS Server2003 Managing, 06/01/14
- New Horizons | CCNA, 06/01/14
- New Horizons | Network+, 06/01/13
- New Horizons | LINUX, 06/01/12
- New Horizons | CompTIA A+, 06/01/11
- New Horizons | VB.Net, 06/01/11
Accomplishments
- I drove the development of several applications, ensuring the backend and frontend software engineers fix issues spotted while testing, despite the unavailability of the project managers
- I carried out various user acceptance tests due to the absence of the user acceptance tester and tight deadlines
- I carried out various demo sessions, guiding potential customers on how to use our recently developed software, due to the failure of our project manager to attend our scheduled meeting with potential clients
Languages
English
First Language
Portuguese
Beginner
A1
Spanish
Beginner
A1
Japanese
Beginner
A1
Chinese (Mandarin)
Beginner
A1
German
Beginner
A1
Affiliations
President | High school chess club| Sep 2006 – July 2008
- I led a group of 20+ players, sharing critical game knowledge, coordinating practice schedules, and developing game strategies
- I fostered a positive and inclusive team culture, leading to a 50% increase in player retention
- I prepared the representative of the school, who eventually placed second in a nationwide competition
Lead defender| Company-wide sports tournament| February 2025 – July 2025
- I coordinated the defenders, ensuring the opponents did not have sufficient time to do damage to our team
- I provided football training kits for team members who needed kits in order to participate with the team
- I cheered and motivated team members in sporting activities that I did not participate in, ensuring my house was victorious
- I helped maintain order and tranquility within the house, pacifying house members who felt cheated by the umpire or referee, as the case may be, which resulted in my house winning the trophy for being the best-behaved
Other mentoring activities|
- Empowered a cohort of more than 10 mentees to improve their self-confidence and academic engagement, as observed in weekly progress reports
- Supported a class of 15 students, resulting in measurable grade improvement for over 80% of the class over one semester
References
References available upon request.
Timeline
Software Quality Assurance Engineer
eTranzact International PLC
01.2020 - Current
Software Quality Assurance Tester
ESDIAC Nigeria Limited
01.2017 - 01.2020
Full Stack Developer
Freesia Networks
01.2015 - 12.2015
Full-stack Developer
Swap Space Systems
01.2012 - 12.2012
Computer Science -
Babcock University
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