Summary
Overview
Work history
Education
Skills
Key Projects
Accomplishments
Affiliations
References
Timeline
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Dillon Matthews

Mullingar,Ireland

Summary

QA Engineer with 4+ years of experience at Fiserv, specialising in API testing, Manual and end-to-end system validation within fintech environments. Proven track record of leading testing efforts across multiple high-impact projects, including chargeback systems and merchant platforms.

Strong experience in API testing (Postman), UI testing, and database validation (SQL/Toad), with foundational exposure to automation using Selenium WebDriver and BDD frameworks. Known for taking ownership of testing activities, working independently, and delivering high-quality releases in Agile environments.

Overview

7
7
years of professional experience
4
4
years of post-secondary education

Work history

QA engineer

Fiserv
Dublin, Ireland
2022.07 - 2026.04
  • Performed manual testing across UI, API, and database layers for multiple fintech applications
  • Led and owned testing efforts across several projects, ensuring high-quality releases and accurate data validation
  • Conducted API testing using Postman, validating request/response data, authentication, and error handling
  • Worked closely with developers and stakeholders in Agile teams to define test scenarios and ensure coverage
  • Gained early exposure to automation through Selenium WebDriver and BDD frameworks, primarily focused on UI test cases
  • Conducted end-user testing, enhancing user experience and satisfaction.
  • SQL statements for effective database testing.

Shop assistant

Dunnes Stores
Westmeath, Ireland
2018.12 - 2022.06
  • Provided friendly and attentive customer service.
  • Managed stock levels on shop floor for continuous product availability.
  • Resolved customer complaints and process issues with proactive problem-solving skills.
  • Managed cash and card payments efficiently during peak periods.
  • Maintained organized and visually appealing product displays.
  • Collaborated effectively with team members during busy periods.
  • Assisted customers in finding desired items to enhance their shopping experience.

Education

BEng (Hons) - Software Engineering

Technological University of the Shannon: Midlands Midwest (TUS)
Athlone, Ireland
2021.09 - 2022.11

Bachelor of Science - Software Development (Mobile Apps and Connected Devices)

Technological University of the Shannon: Midlands Midwest (TUS)
Athlone, County Westmeath, Ireland
2018.09 - 2021.05

Skills

Technical Skills:

  • Languages: Programming: SQL,Java,PythonCucumber,BDD
  • Automation & Tools: Postman,IntelliJ IDEA, Jenkins, Selenium
  • Testing: API Testing, UI Testing, Regression Testing, E2E Testing, UAT
  • Version Control: GitLab, Jira, Jenkins and GitHub
  • Database & Tools: Toad, SQL scripting, Data validation
  • Other: Putty, CSV data handling, Test Data Generation

Soft Skills:

  • Teamwork and collaboration
  • Time and task management
  • Problem-solving and troubleshooting
  • Adaptable and fast learner
  • Strong communication
  • Self-motivation
  • Creative thinking

Key Projects

Disputes API (Current – Lead QA)

  • Sole QA responsible for end-to-end manual testing of Disputes API (V1 & V2 – OPY & IPP calls)
  • Validated API functionality including input validation, authentication, data integrity, and error handling
  • Performed extensive manual regression and integration testing across multiple API flows
  • Delivered a company-wide demo, explaining API functionality and workflows
  • Built strong knowledge across multiple APIs (Boarding, Maintenance, etc.) before taking full ownership
Disputes MFE (Merchant Portal – Current Project)
  • Acting as sole QA, working directly with a developer on delivery
  • Performing full UAT and end-to-end manual testing of merchant-facing dispute functionality
  • Testing UI flows within the RAM 2.0 Merchant Portal
  • Supporting data setup through BDD-based processes executed via Jenkins pipelines
  • Validating 80-byte file processing for chargeback data ingestion
  • Currently in final stages before production release
eMAX Project (Lead QA – 1.5 Years)
  • Led manual QA for a chargeback data migration project onboarding 3 new clients
  • Validated data transfer between APS systems and internal databases (e.g. BWQ28 via Toad)
  • Performed database validation, UI checks, and data integrity testing
  • Created and managed mock data via CSV uploads and automated scripts (Putty)
  • Played a key role in successful go-live delivery
  • Operated independently without senior QA oversight
RAM 2.0 Merchant Portal (Early Career)
  • Performed manual UI testing and created BDD test scenarios
  • Gained initial exposure to automation by writing basic Selenium WebDriver test cases
  • Used PyCharm to run Python-based BDD test cases
  • Built strong foundational knowledge of merchant systems and chargeback lifecycle

Accomplishments

  • Completed Fiserv Graduate Programme
  • Led QA efforts across multiple successful project releases
  • Delivered internal demos to stakeholders
  • Recognised for strong ownership and independent working
  • Earned rewards for exceeding targets in key projects

Affiliations

  • GAA and Soccer
  • Music and Gaming
  • Udemy courses

References

References available upon request.

Timeline

QA engineer

Fiserv
2022.07 - 2026.04

BEng (Hons) - Software Engineering

Technological University of the Shannon: Midlands Midwest (TUS)
2021.09 - 2022.11

Shop assistant

Dunnes Stores
2018.12 - 2022.06

Bachelor of Science - Software Development (Mobile Apps and Connected Devices)

Technological University of the Shannon: Midlands Midwest (TUS)
2018.09 - 2021.05
Dillon Matthews