Erwin Lee
About
Erwin Lee is from Singapore. Erwin is currently Chief Technology Officer at 99 Group (99.co | Rumah123 | SRX) , located in Singapore, Singapore. In Erwin's previous role as a Group Head of Engineering (L6) at GoTo Group, Erwin worked in Singapore, Singapore until Apr 2023. Prior to joining GoTo Group, Erwin was a Head Of Engineering at Moka and held the position of Head Of Engineering. Prior to that, Erwin was a Senior Engineering Manager at Moka, based in Singapore from Oct 2019 to Apr 2020. Erwin started working as Engineering Manager - Core, Loyalty & Payment at Moka POS in Singapore in Jan 2019. From May 2018 to Dec 2018, Erwin was Engineering Lead at Moka. Prior to that, Erwin was a Senior Software Engineer at Moka from May 2017 to Apr 2018. Erwin started working as CTO (Co-Founder) at Tapiver in Singapore in Dec 2016.
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Erwin Lee's current jobs
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Erwin Lee's past jobs
- successfully break our legacy monolith backend into several microservices by using Domain Driven Design. Increase the uptime of our services from 99.2% in 2017 to 99.9% in 2020. - Rearchitect customer and loyalty service using CQRS architecture. Reduce the response time by 97%.
manages 5 teams(Payment, Table Management, Loyalty, Sync Bill Online, and Employee management). Achievements: - Manage the delivery of our new product Moka Pay (payment aggregator) and successfully integrated to several e-wallets partners, such as OVO, GoPay, Kredivo, LinkAJA, WeChat, AliPay, DANA, and Akulaku. - progressively eliminated the payment discrepancy from 0.3%(before taking over) to 0% in 6 months. - help revamp the hiring process, introduce 4 stages interview process, grow the team from 30 engineers to 80+ engineers. - refactor our authorization service to reduce force logout event from 600k monthly to 0. Dubbed as the most significant impact engineering improvement. technology: Spring Boot, Kafka, SQS, AWS Api Gateway, Elastic beanstalk, Redis, DocumentDB, DataDog, Sentry, CleverTap.
Led a small team of 5. Achievements: -Delivered several features in a short time span, Table Management, Syncbill Online and Employe slot features. - Reviewed our AWS's cost and able to propose changes which reduce the monthly cost by up to 40%
Pioneered the engineering team in Singapore. achievements: - Rearchitect Moka Backend from Monolith into microservices. Delivered 2 first microservices, Loyalty and Account management. - Rearchitect the backoffice.mokapos.com from RoR to Single page application based on React with Redux. Improve the page load by 30% averagely. Technology: Spring Boot, AWS API Gateway, Lambda, PostgreSQL, New Relic, Redis, Mixpanel, Nexmo.
Tapiver is a location-based shopping app for Singapore. Tap into any location in Singapore (“Haji Lane” or any of your favourite location) and you will be able to shop at the retail stores on your smartphone. As the tech founder of Tapiver, my responsibilities include: - Liaise with Business and marketing team to translate business requirement to technology solutions. - Designed, architected and developed Tapiver Backend using Play framework and integrated with Stripe, One Signal, Firebase, AWS S3, and Nexmo. The backend service is developed with scalability and clean code as the top priority. - Designed the database structure for Tapiver, which has around 50 tables to accommodate different use cases. - Work in the team of 2 to develop https://seller.tapiver.com using React with Redux.
-Acted as sole project executor, completed all tasks and managed project from start to finish for the following projects: 1. OnTalk Vault Web(similar to Google drive or dropbox) using React with redux within a very tight 6 weeks’ timeline. 2. OnTalk Web POC(similar to whatsapp web chat) using angular JS -work in the team of 2 to revamp OnTalk manager dashboard with the new flows, functionality and look and feel using Spring framework
-Designed and implemented an automatic failover software that monitors and maintains services availability, leading to 99.8 percent service uptime and 85 percent reduction in customer support calls. (Java, Amazon Web Service/AWS API) -Developed a dashboard that allows the client to monitor real time service's latency and availability (ActiveMQ, Play Framework) -Developed a RESTful API to mimic the functionality provided on our syndicate trading detection portal(Jersey) -Fixed major issues in a data analyzer software for syndicate trading detection portal leading to 95 percent reduction in false negative result. -Consistently able to finish scraper/crawler for numerous trading sites to provide real time data in an agreed format within 80% of the given timeline. (Ruby and Java) -Created a RESTful API to manage servers from various Cloud Services(Play Framework) -implemented crash-resistant mysql master and master replication -automated deployment of services using Shell scripts