Shield Engineer at SHIELD Engineering (Device-first fraud detection company)

Developed fraud intelligence for a device-first fraud detection product using proprietary fingerprinting technology. Built agentic SR E with AWS access for troubleshooting, provisioning, monitoring, and cost optimization under security controls. Built hosted n8n workflows and RAG-based ChatGPT agents to automate internal workflows (monthly cloud cost checks/analysis and Slack-interactive flows) reducing manual effort and improving response time. Created developer knowledge-sharing automation using pipelines and AI-generated changelogs to share feature information. Designed and delivered a job-based impact analysis platform plus a dynamic rule engine to safely evaluate and simulate anti-fraud rule changes on historical data, enabling safer rollout decisions for risk/abuse controls.

Shield Engineer at SHIELD Engineering (Device-first fraud detection company, AWS/AIS workflow/anti-fraud intelligence)

Built intelligence for device-first fraud detection clients leveraging proprietary fingerprinting technology. Implemented an agentic SRE using AWS, Slack workflow, and other resources for troubleshooting, provisioning, monitoring, and cost optimization under security controls. Developed hosted n8n workflow automation and built ChatGPT agents with RAG to automate internal workflows, including monthly cloud cost checks and Slack-interactive workflows. Designed and delivered a job-based impact analysis platform plus a dynamic rule engine for anti-fraud rule configuration. Enabled fast rule-change impact analysis on historical data for safer rollback/out decisions in risk/abuse control. Managed AWS resources including EKS clusters, batch jobs, and infrastructure via Terraform; administered ArgoCD for developer deployments and built observability dashboards with Prometheus + Grafana. Enhanced developer knowledge-sharing by creating AI-enabled automated workflows using AI-generated logs and

Shield Engineer at SHIELD

Built and delivered device-first fraud detection intelligence by leveraging proprietary fingerprinting technology to provide actionable insights for clients. Developed an AI workflow automation system (n8n + RAG agents) to host and operate internal agent-based workflows, including monthly cloud cost checks/analysis and Slack-interactive workflows to reduce manual operations and improve response times. Designed core backend components: a job-based impact analysis platform and a dynamic rule engine for configuring anti-fraud rules, enabling fast impact analysis on historical data to support safer risk/control decisions. Created an AI-enabled developer knowledge sharing system using AI-generated change logs and shared feature information.

Working in Shopee Engineering Infra Platform Team at Shopee

Worked on Shopee internal DevOps platform and infrastructure for SRE/developers supporting near-daily operational workflows: permission control, container scaling, service deployment, domain and resource application management. Focused on three main projects. 1) Generic search product based on Elasticsearch with AI-related minor implementation; enabled teams to index data into a common document model and provide search functions; defined key metrics such as click-through rate and conversion rate. 2) Infra product management controlling application lifecycle and key integration ability with other systems (Service Migrations system). Built a service migration system on top of a message queue to communicate with distributed systems and ensure final consistency. 3) Support for infrastructural operations around service deployment, load balancing, and domain configuration.

DevOps & Cloud Operations / AI Workflow Automation / Backend Engineer at ShopEe Engineering (Platform / SRE & DevOps)

Managed AWS resources based on business and developer requirements, including EKS clusters, batch jobs, and infrastructure provisioning via Terraform. Administered ArgoCD for developer deployments and built monitoring dashboards with Prometheus + Grafana for multi-team observability and alerting. Developed an internal DevOps platform to reduce manual workload, enabling engineers to manage AWS Lambda functions, EMR jobs, data pipelines, and database connections via self-service UI. Focused on promotion of application bundles across environments/regions and built scalable internal data pipelines using Spark on EMR for ETL and data analytics support. Implemented data pipeline features to allow analysts to configure and run pipelines via UI, plus provisioned data preparation and ad-hoc query support.

Working in Shopee Engineering Infrastructure Platform / DevOps & Cloud Operations at Shopee

Developed and operated internal infrastructure platforms to reduce daily manual workload for SRE and developers, including self-service management of AWS Lambda functions, EMR jobs, data pipelines, and database connections through an internal UI. Administered developer deployments via Argocd and built monitoring dashboards with Prometheus/Grafana. Led/owned multiple infrastructure product initiatives: a generic search product using Elasticsearch, an internal platform for service lifecycle and integrations with a service migration system (message-queue based for distributed systems) and service resource/permission migration with final consistency. Performed data pipeline engineering for analytics needs and conducted research to enhance distributed systems and faster-changing client requirements.

DevOps & Cloud Operations / Platform Engineering at Shopee

Led DevOps and cloud operations including AWS resource management, EKS cluster provisioning, batch jobs and infrastructure management with Terraform. Administered Argocd for developer deployments and built monitoring dashboards with Prometheus + Grafana for multi-team observability and alerting. Designed and built an internal DevOps platform for SRE/developers to reduce manual workload via self-service UI to manage AWS Lambda, EMR jobs, data pipelines, and database connections; supported application bundle promotion across environments/regions. Engineered scalable internal data pipelines using Spark on EMR for ETL and provided UI-configurable pipeline execution and ad-hoc querying for analytics teams. Conducted research and implemented infrastructure solutions for fast-changing client requirements; led initiatives to self-host and optimize distributed systems such as ClickHouse, ScyllaDB, and Flink on Kubernetes to improve scalability and data-flow efficiency. (2024.01-2024.12: also wo

Backend Developer at ShopeePay Acquiring Service team

Backend development for ShopeePay acquiring services using Go and TDD, including feasibility studies, technical design, and performance tuning. Worked on core systems such as acquiring service orchestration to trigger downstream services (e.g., promotion and wallet) to fulfill offline payment flows, as well as QR-code-based offline payment processing with multi-country/region, currency handling, and cross-border transaction support. Also built backend services on top of the main acquiring service to support merchant portal applications and integrations for payment-related use cases.

Backend Developer (Go, TDD) / Backend engineering for ShopeePay acquiring at ShopeePay Acquiring service team

Backend development in Go using TDD, with responsibilities including feasibility studies, technical design, and performance tuning. Owned core parts such as state machine revamp, merchant portal services, and some payment flows. Acquiring service as a communicator triggering downstream services (e.g., promotion and wallet) to fulfill offline payment. Implemented offline payment processed by scanning QR codes, supporting multiple countries/regions, currencies, and cross-border transactions; integrated with external switch companies when the user/merchant is not part of the ShopeePay partner server. Built merchant portal application backend on top of main acquiring service to serve merchant portal applications.

Backend Developer (Service Migration / Payments / Acquisition) at ShopeePay Acquiring Service Team

Backend development in Go with TDD. Conducted feasibility studies, technical design, and performance tuning. Owned core system rewrites and services including the acquiring service, merchant portal services, and parts of payment flows. Acquiring service acted as a communicator to trigger downstream services such as promotions and wallet flows to fulfill offline payment processes. Implemented offline payment handling with QR scanning, supporting multiple countries/regions and currencies, and coordinating cross-border transactions. Integrated with external switch companies when merchants were not part of the ShopeePay partner server stack.

Backend Developer (Acquiring Service) at ShopeePay Acquiring Service team

Worked as a backend developer (Golang) using TDD. Owned feasibility studies, technical design, and performance tuning. Contributed to core state machine revamp, merchant portal services, and parts of payment flows. Acquiring service acted as a communicator to trigger downstream services (e.g., promotion and wallet) to fulfill offline payment needs. Offline payment handled QR-code scanning across multiple countries/regions/currencies and cross-border transactions, including communication with external switch companies when the user/merchant was not part of ShopeePay partner server. Built backend services on top of acquiring service to serve merchant portal applications.

Front-End Developer / DevOps & Frontend (React) for SRE internal platform at Shopee Engineering Infra

Built internal DevOps platform to cover daily SRE and developer use cases based on React. Collaborated with internal technical teams to identify user pain points, propose feasible solutions, arrange tasks for teammates, and conduct technical research to improve frontend performance. Owned operational infrastructure domains such as service deployment, service/resource management, DNS application, load balancing application, and network service topology. Served as technical lead coordinating daily business alignment with PM and backend teams, plus internal technical enhancements.

Frontend Developer / DevOps Platform Developer (SRE & Developers) at Shopee Engineering Infrastructure Team

Built internal DevOps platforms for daily SRE and developer use cases based on React (frontend). Worked with internal technical teams to identify user pain points and develop feasible solutions; managed task alignment with PM/backend; conducted technical research to improve frontend performance. Projects included generic search products (Elasticsearch-based), internal platform components for search analytics metrics (e.g., click-through rate, conversion rate) and Infra product management controlling application lifecycle and integration compatibility with service migration systems. Contributed to data-driven and operational tooling including infrastructure service deployment, service/resource management, DNS application, load balancing application configuration, and network service topology.

Front-End Developer (DevOps platform) at Shopee Engineering Infrastructure team

Built an internal DevOps platform (React-based) to cover daily SRE use cases for developer productivity, including permission control, container scaling, service deployment, domain and resource application management. Teamed with internal engineering groups to identify user pain points, define feasible solutions, arrange tasks, and conduct technical research to improve frontend performance and usability. Served as a technical lead for frontend alignment with product managers and backend engineers and delivered internal technical enhancements.

Front-End Developer / Frontend Infra (DevOps Platform) at Shopee Engineering Infra team

Built an internal DevOps platform covering daily SRE use cases and developer workflows based on React for frontend. Collaborated with internal tech teams to identify user pain points, deliver feasible solutions, and run technical research to improve frontend performance. Tech lead for daily business alignment with PM and backend teams and drove internal technical enhancements.

Frontend Developer (Office Efficiency / Knowledge Management) at Meituan

Front-end development for office efficiency initiatives. Cited projects included an internal knowledge management platform (similar to Confluence) used daily by employees, where I handled editor-related feature R&D and contributions. Worked on a CMS system to support article and news upload and a page rendering system with grid-based rendering configuration for business teams, including common components for grid rendering content configuration.

Front-End Developer (Office Efficiency team) at Meituan

Worked on office efficiency tooling and user-facing improvements as a frontend developer.

Front-End Developer (Editor-related features) / Content tooling at Citadel (internal knowledge management platform)

Built editor-related R&D features for an internal knowledge management platform (similar to Confluence) used daily by all employees. Also worked on a CMS system for internal business teams to upload articles and render page front-ends, along with a grid-based rendering system for configurable page layouts and reusable components.

Web / CMS Frontend Developer (Data Analysis / Web Dissector) at Web Dissector / Related Systems

Developed data analysis platform capabilities supporting daily commercial data and features such as heatmaps and other analytics. Built systems used by business teams to upload/manage content (articles/news) and configure paged rendering based on grid-based layout engines.

Frontend Developer / CMS Editor Features at Cidecake (internal knowledge management at Meituan)

Owned editor-related R&D features for an internal knowledge management platform (similar to Confluence) widely used by employees every day.

Web Developer (CMS / rendering / analytics platforms) at Various internal systems (CMS, grid rendering, web discetor/data analytics)

Contributed to internal CMS and page rendering systems enabling business teams to manage articles and configure pages through a grid-based rendering pipeline, including reusable components integrated with CMS configuration. Developed or supported a web data analytics platform providing daily commercial data and additional features such as heat maps.

Web Developer (Data Analysis Platform) at Web Discestor (internal data analytics platform)

Supported daily commercial data and features such as heatmaps on a data analysis platform.