Wisdom Liu
Software Engineer Ii @Arcadis
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WORK HISTORY
Software Engineer Ii @Arcadis
Los Angeles, CA, US
Architected and maintained a scalable IVR system and admin web panel, supporting operations across the U.S. and Canada- Developed the Pennsylvania 511 Turnpike Message Handler with Twilio, using Lambda, DynamoDB, and CloudWatch for real-time data processing- Implemented AWS Cognito for secure user management, streamlining authentication and boosting security- Strengthened security by implementing AWS CDK and Secrets Manager to enforce API key access restrictions- Integrated AWS Polly for multi-language dynamic text-to-speech conversion, enhancing user experience- Built a reusable outbound email solution using AWS SES, automating workflows and improving efficiency- Enhanced staging and production environments via CDK, enabling secure Intelepeer communications- Encrypted communications by transitioning to TCP/TLS with Intelepeer- Standardized data ingestion pipelines- Led improvements in IVR system performance and scalability using Node.js, Re-think, and PostgreSQL- Refined and modularized legacy code, reducing technical debt and improving maintainability.
EDUCATION
UC Irvine
Bachelor of Arts (B.A.)
SKILLS
ABOUT WISDOM LIU
Backend: Node.js (Express), PGSQL (AWS RDS), DynamoDBCloud: AWS SDK/CDK, S3 (Caching), AWS Secrets Manager, AWS Lambda (Twilio Integration), CloudWatch, AWS Cognito, Amazon SES, AWS CodeArtifact (NPM Repos)Systems: Linux (Administration, Command Line)Frontend: React (Redux), Angular, Vue.jsLanguages: JavaScript, TypeScript, SQL
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