Testing complex systems so they feel simple in production.

Lead software test engineer across three AI SaaS platforms — Salesgroup.ai, ChatQuick.ai, and WordWriter.co. Scope spans test planning, backend performance testing, API security hardening, and server infrastructure.

• Led QA across Salesgroup.ai, ChatQuick.ai, and WordWriter.co — developed test plans and self-healing test suites for each platform.
• Partnered with the backend engineering team to implement strategic API rate limits, enhanced log monitoring, and reCAPTCHA v3 — reducing bot attacks by over 85% and improving threat visibility.
• Engineered and executed backend load and performance tests with Apache JMeter, simulating 500+ concurrent users to assess API scalability and surface bottlenecks.
• Configured MTA-STS domain security, improving email transport security and overall domain hardening.
• Maintained hosting platform security through periodic server updates, security incident scan reviews, and blocking malicious IP addresses to reduce attack exposure.
• Generated actionable Apache JMeter load testing reports for development teams — analysing response times, throughput, error rates, and bottlenecks to support backend performance optimisation.

QA and frontend engineering at a US healthcare startup. Covered E2E and smoke testing, AI agent quality assurance for health products, manual UI testing, and frontend analytics integration for the Physician Copilot platform.

• Executed comprehensive E2E and smoke testing across web and mobile application features, ensuring product reliability and quality prior to each release.
• Performed detailed manual UI and functional testing of responsive web application components, validating user acceptance criteria.
• Designed and executed AI agent quality assurance for health-related products — stress-testing response accuracy, relevance, safety, and alignment with product roadmap requirements using diverse health prompts.
• Contributed to the Physician's Copilot frontend codebase, implemented Google Analytics tracking key user journeys, and delivered weekly user activity reports to support product improvement, QA coverage, and roadmap decisions.

Freelance cloud infrastructure consulting on Upwork — designed secure cloud environments, translated client requirements into practical infrastructure architecture, and delivered documented findings with actionable recommendations.

• Delivered cloud architecture consulting, designing secure cloud environments covering project creation, resource hierarchy, IAM policies, access controls, and scalable infrastructure planning.
• Translated client requirements into practical cloud infrastructure designs covering identity management, resource organisation, networking considerations, and environment separation.
• Documented test findings and root cause analysis, providing recommendations for quality improvements and infrastructure optimisation.