TINTU MARIAM TOM
Mickleham,VIC
Summary
Results-driven Senior Quality Engineer with a proven track record of delivering high-quality solutions across the retail, payments, and insurance sectors. Recognized for early adoption of AI-powered testing tools and effectively leveraging innovative technologies to enhance automation and operational efficiency. Currently contributing expertise at Block, Inc., a leading global fintech organization, driving quality assurance initiatives that elevate product standards and customer satisfaction. Committed to continuous improvement and excellence in quality engineering practices.
Overview
15
15
years of professional experience
1
1
Certification
Work History
Senior Quality Engineer
BLOCK INC
Melbourne, VIC
02.2022 - Current
- Designed and developed integration tests using Spring Boot (Java/Kotlin) and REST Assured to validate microservices and API contracts
- Reviewed and improved unit test coverage across Java-based services, ensuring code reliability and best practices
- Championed shift-left testing by embedding quality practices early in the SDLC, catching defects at the code level
- Conducted code reviews on pull requests, providing feedback on quality, testability, and edge case coverage
- Wrote Kafka integration tests using Testcontainers to validate end-to-end event workflows
- Identified and resolved bugs in Java-based platform services, contributing directly to production stability
- Performed root cause analysis on production defects, implementing fixes with regression tests to prevent recurrence
- Wrote and enhanced unit and integration tests to increase code coverage and reduce defect leakage1
- Advocated for TDD practices, improving code design and reducing post-deployment defects
- Contributed to platform codebase beyond traditional QA scope, demonstrating strong development and testing capabilities
- Collaborated with development teams to identify and resolve defects early in the process.
Quality Engineer
Afterpay Touch Group
Melbourne, VIC
08.2018 - 02.2022
- Designed and executed comprehensive API test suites using REST Assured to validate RESTful services for data integrity, response accuracy, and performance.
- Built robust integration test frameworks using Spring Boot and WireMock, enabling end-to-end microservices validation with simulated third-party dependencies.
- Developed contract tests and automated regression suites within CI CD pipelines, reducing manual effort by 40% and accelerating release cycles.
- Delivered end-to-end payment testing across Stripe and Adyen covering authorization, capture, refund, settlement, and webhook validation.
- Tested multi-currency, multi-region, and multi-payment method flows including cards, digital wallets, and BNPL integrations.
- Validated 3D Secure (3DS1 & 3DS2) authentication and PCI-DSS compliance, ensuring secure cardholder data handling and card scheme adherence for Visa and Mastercard mandates.
- Conducted production validation testing post-deployment, including smoke tests and synthetic transaction monitoring to ensure zero payment disruption.
- Monitored payment success rates, decline rates, and error codes using Datadog, collaborating with SRE teams to triage and resolve production issues.
Quality Analyst
My Deal .com.au
Melbourne, VIC
06.2017 - 07.2018
- Performed end-to-end, functional, and regression testing of MyDeal website across cross-browser and mobile responsive environments
- Built automated test suites using Selenium WebDriver (C#) for UI regression testing
- Conducted API integration testing (Postman) for Shopify, Neto, WooCommerce, and Magento product imports
- Tested backend CRM functionalities — customer management, sales, refunds, order processing, and reporting
- Validated Google Analytics and Tag Manager configurations for accurate digital tracking
- Tested Campaign Monitor email workflows and Zendesk UAT for customer support
- Wrote SQL scripts on Microsoft SQL Server for data validation and backend verification
- Verified Trustpilot review integration on the website
- Developed test plans, defect reports, and API documentation for internal and external teams10Worked in Agile (JIRA) for sprint tracking, user stories, and iterative delivery
Senior System Analyst
Allianz Cornhill Information Services
Trivandrum
04.2011 - 05.2016
- Analyzed system requirements and designed solutions to enhance operational efficiency.
- Led cross-functional teams in implementing system upgrades and process improvements.
- Developed and maintained documentation for system processes and procedures.
- Collaborated with stakeholders to identify business needs and translate them into technical specifications.
- Website development and maintenance of Pet Insurance website - Petplan
Education
Bachelor of Engineering Technology - IT
University College of Engineering
Kerala INDIA06-2007
Skills
- Java programming
- Kotlin programming
- AWS
- Spring Boot development
- Automated REST API testing - REST Assured
- Kafka expertise
- WireMock testing
- Automated testing with Selenium
- API Testing - Postman, Swagger
- Database - MySQL, Dynamo DB
- Docker deployment skills
- Observability - Datadog, Newrelic, Splunk, Sumo logs
- JIRA project management
- CI/CD - Jenkins, Buildkite
- AI tools - Claude Code, Codex
Certification
- ISTQB Certification
- AWS Certified Cloud Practitioner
Languages
English
Full Professional
Software
JAVA
Kotlin
Rest Assured
MCP
Selenium
Timeline
Senior Quality Engineer
BLOCK INC
02.2022 - Current
Quality Engineer
Afterpay Touch Group
08.2018 - 02.2022
Quality Analyst
My Deal .com.au
06.2017 - 07.2018
Senior System Analyst
Allianz Cornhill Information Services
04.2011 - 05.2016
Bachelor of Engineering Technology - IT
University College of Engineering