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Cheong Tzen Yang

@cheongtzenyang

Software QA Engineer building real-time test automation systems that improve stability, data accuracy, and release confidence.

Malaysia

Message

What I'm looking for

I’m looking to own QA quality in real-time, data-driven products—building automation, validating APIs and event pipelines, and partnering closely with dev to ship stable releases. I value clear standards, measurable KPIs, and continuous improvement.

I’m a Software QA Engineer focused on quality in real-time fintech systems, with deep expertise in WebSocket validation, Kafka pipeline integrity, and end-to-end automation. I bring a forensic testing mindset and translate complex system behavior into reliable, repeatable test coverage.

At Trontal Group, I built the company’s QA function from the ground up—growing it into a 3-person team, establishing structured QA workflows, and embedding QA deeply into fast-moving development cycles. I established full QA infrastructure including a Playwright/TypeScript E2E automation suite, GitLab CI pipelines, a live QA dashboard, and dedicated enterprise test environments, improving automation coverage, release stability, and data accuracy.

My testing scope spans deep WebSocket testing for message sequencing, event delivery, reconnection logic, latency behavior, and synchronization across services. I validate Kafka event streams to ensure message ordering, delivery guarantees, schema consistency, and cross-service data alignment, and I verify OHLCV data accuracy against live exchange sources.

Previously at Bytecenture Consulting, I led testing for TikTok’s Music and VOD features across web and mobile. I diagnosed ~50+ high-severity defects, improved playback stability by ~25%, and reduced regression cycle time by ~40% through automation and reusable sanity-check routines.

Experience

Work history, roles, and key accomplishments

Current

QA Engineer

Current

Trontal Group Sdn Bhd

Jul 2025 - Present (11 months)

Builds and leads the QA function and quality strategy for all products and releases. Designs and runs manual and end-to-end automation using Playwright/TypeScript integrated with GitLab CI, including WebSocket and Kafka validation for real-time data accuracy.

QA Leadership Test Strategy Manual Testing Playwright TypeScript Gitlab CI Load And Performance Testing API Testing Postman WebSockets Reconnection Logic Testing Latency Behavior Analysis Kafka Testing Message Ordering Verification Schema Consistency Checks Smoke Testing Jira

Software Quality Assurance Engineer

Bytecenture Consulting Sdn. Bhd.

Jun 2024 - Apr 2025 (10 months)

Led end-to-end manual and automated testing for TikTok’s Music and VOD features across web and mobile, partnering with product and design to reproduce issues and validate fixes. Used tracing and debugging tools to investigate APIs and improve stability and regression efficiency.

End To End Testing Manual Testing Testing Automation Charles Proxy Debugging Performance Analysis Regression Testing Defect Reproduction Jira

Software Quality Assurance Tester

EightStorm

Jul 2022 - Jul 2024 (2 years)

Designed and executed manual test plans for client web applications, covering functional, regression, and usability testing. Tracked and documented defects in Bugzilla and collaborated with development teams to review requirements and ensure fixes.

Manual Testing Functional Testing Regression Testing Usability Testing Bugzilla

Network Testing Project

Freelance

Mar 2024 - May 2024 (2 months)

Planned and executed distributed network testing with a team across multiple locations. Designed test cases and consolidated network testing results into timely reports.

Network Testing Distributed Teams Test Case Design Results Consolidation Test Reporting

QA Engineer Intern

Bytecenture Consulting Sdn. Bhd.

Nov 2023 - May 2024 (6 months)

Performed manual testing for Photo Mode and Cross-Language Agent across multiple devices. Tracked bugs in JIRA and supported creation of test plans, checklists, and QA process documentation.

Manual Testing Jira Test Planning QA Documentation Checklists

Software Quality Assurance Tester

Global Odds Holdings

Jun 2022 - Mar 2023 (9 months)

Performed broad manual testing to validate software functionality, performance, and UI/UX. Documented and tracked defects with development teams and contributed QA insights to support continuous improvement.

Manual Testing Functional Testing Performance Testing UI UX Defect Documentation Code Review

Software Developer & QA

Various Short-term Contracts

Jan 2018 - May 2022 (4 years 4 months)

Supported multiple short-term client engagements by conducting front-end testing and collaborating on requirements gathering. Assisted with QA support across multiple client-side technologies.

Front end Testing Requirements Gathering QA