I am a Software Engineer with over 4 years of experience in software development, focusing on SaaS. I specialise in backend development and have extensive experience in handling and optimising millions of requests daily and billions of data entries. I am collaborative and enjoy explaining technical concepts to non-technical stakeholders. I continuously strive to improve product quality and system security through thoughtful design, testing, and monitoring.

Jiayou Yao

I am a Software Engineer with over 4 years of experience in software development, focusing on SaaS. I specialise in backend development and have extensive experience in handling and optimising millions of requests daily and billions of data entries. I am collaborative and enjoy explaining technical concepts to non-technical stakeholders. I continuously strive to improve product quality and system security through thoughtful design, testing, and monitoring.

Available to hire

I am a Software Engineer with over 4 years of experience in software development, focusing on SaaS. I specialise in backend development and have extensive experience in handling and optimising millions of requests daily and billions of data entries.

I am collaborative and enjoy explaining technical concepts to non-technical stakeholders. I continuously strive to improve product quality and system security through thoughtful design, testing, and monitoring.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
See more

Language

English
Fluent

Work Experience

Backend Software Engineer at Mega Limited
May 1, 2023 - January 1, 2026
Developed and maintained multiple PHP/Node.js microservices handling hundreds of millions of requests per day. Contributed to payment systems, integrating Stripe, Apple Pay, and Google Pay for multi-channel processing. Built a large-scale data pipeline processing billions of events for analytics and reporting. Wrote unit, integration, and performance tests; improved server response times by over 50% through asynchronous processing, caching, database sharding, and SQL optimisation.
Web Developer at Mega Limited
May 1, 2023 - January 1, 2026
Worked on a file hosting service used by 300+ million users. Implemented frontend and backend features using MVC patterns, microservices, API gateway, and distributed architectures. Developed image and video related features using React, PHP, and MySQL, delivering services to hundreds of millions of users. Improved content loading performance by introducing dynamic loading, boosting load speed by approximately 90%.
Software Engineer at Getskills NZ
July 1, 2022 - December 1, 2022
Implemented a social Q&A platform to upskill New Zealand's unemployed people and graduates. Built a mobile-first UI with Flutter and a scalable backend using AWS serverless architecture (Lambda) and event-sourced CQRS GraphQL (AppSync) powered by Node.js.
Software Engineer at Lovelive Limited
November 1, 2020 - February 1, 2022
Developed multiple apps (online food ordering, shopping, and social media) from scratch using Flutter and React. Built backend services with Node.js and MongoDB, migrated backend and database to AWS (EC2, S3) for improved performance and scalability. Also contributed to a video player website and implemented encryption to deter crawling.

Education

Bachelor of Software Engineering (Honours) at The University of Auckland
January 1, 2019 - January 1, 2022

Qualifications

Certificate of Outstanding Achievement in COMPSCI 367 Artificial Intelligence
January 11, 2030 - May 13, 2026
Microsoft Learn Challenge | Ignite Edition: Innovate and secure your migration to Microsoft Azure
December 1, 2024 - December 31, 2024

Industry Experience

Software & Internet, Professional Services, Media & Entertainment