Ollie Tan

Software Developer · Milpitas, California

Experience

  1. Senior Full Stack Developer

    Advantech USA

    Maintaining enterprise applications and architecting real-time asset management systems for organizational operations. Designing and developing modern tools with AI-powered capabilities, SAP integrations, and microservices architecture.

    C#ReactNext.jsAIMicroservicesTailwindShadcnUIORMSAP
  2. Software Developer

    BMO Financial Group

    Built investment platforms for wealth management and led cloud infrastructure migration to AWS. Architected microservices using gRPC and developed real-time React dashboards for portfolio analytics.

    C#PythonReactTypeScriptNode.jsAWSgRPC
  3. Software Developer

    Book4Time

    Engineered high-performance backend APIs for enterprise spa management platform. Implemented payment gateway integrations, built observability infrastructure, and optimized core services using TDD and caching strategies.

    C#.NETReactTypeScriptNode.jsPostgreSQLRedis
  4. Web Developer

    CIK Telecom

    Developed automated warehouse and payment systems for telecom operations. Modernized legacy VB.NET applications to React and Node.js stack with improved performance and maintainability.

    JavaScriptNode.jsReactMongoDBMQTT

Skills

Languages
C# · TypeScript · Python · JavaScript · Go · Java · SQL
Backend
Node.js · FastAPI · Django · .NET · REST · gRPC · Microservices
Frontend
React · Next.js · Angular · Redux · SSR · Responsive Design
Databases
PostgreSQL · MongoDB · MS SQL · Redis · Amazon RDS
Infrastructure
AWS · Docker · Kubernetes · Kafka · Terraform · CI/CD