# Harrison Ha

> Software Engineer at Amazon

Location: London, England, United Kingdom
Profile: https://flows.cv/harrisonha

Full-stack technology leader with 8+ years of experience delivering end-to-end solutions for startups and enterprises. Expert in crafting scalable frontend and backend architectures, leveraging Generative AI to drive innovation and streamline workflows. Proven track record in leading cross-functional teams, optimising system performance, and developing impactful digital products that achieve measurable business outcomes.

## Work Experience
### Software Engineer @ Amazon
Jan 2025 – Present | Greater London, England, United Kingdom
Working in prime video

### Senior Software Engineer @ Lloyds Banking Group
Jan 2023 – Jan 2024 | London, England, United Kingdom
• Spearheaded the migration of backend microservices from IBM API Connect v5 to v10, cutting latency and achieving 90% of API responses within 400ms.
• Integrated SSO with Azure AD, enhancing authentication security and simplifying API access via Azure RBAC.
• Led a team in implementing scalable, resilient solutions, improving system performance.

### Senior Software Engineer @ IMMO
Jan 2022 – Jan 2023 | London, England, United Kingdom
• Developed a Generative AI-powered data extractor, reducing manual data entry time by 99%.
• Pioneered a micro-frontend architecture, enabling independent team deployments and expediting project timelines.
• Designed and rolled out a unified design system, cutting website development time by 40%.
• Mentored engineers, fostering technical growth and collaboration.

### Founder @ Treviu
Jan 2019 – Jan 2023 | Hong Kong
• Launched an app ranked in the top 10 of the HK App Store, with a growing user base and strong engagement metrics.
• Engineered scalable system architectures to accommodate rapid user growth while maintaining high performance.
• Directed business operations, marketing, and product development, achieving strong brand recognition.

### Solution Analyst @ Cathay Pacific Airways
Jan 2018 – Jan 2019 | Hong Kong
•Transitioned the airline booking system from a monolithic to a microservices architecture, significantly improving system reliability and scalability.

### Analyst Programmer @ CKLY Trading Limited
Jan 2017 – Jan 2018 | Hong Kong

### Application Consultant @ IBM
Jan 2016 – Jan 2017 | Hong Kong

### Trainee Developer @ En-trak
Jan 2014 – Jan 2015 | Hong Kong


## Education
### Bachelor’s Degree in Computer Science
The Hong Kong University of Science and Technology

### Overseas Exchange Program in Computer Science
Iowa State University


## Contact & Social
- LinkedIn: https://linkedin.com/in/harrisonha

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Source: https://flows.cv/harrisonha
JSON Resume: https://flows.cv/harrisonha/resume.json
Last updated: 2026-04-05