Hi My Name is
Crono Chiu

Full Stack React/AWS Developer

End-to-End Web Development Engineered for Business Growth

I design and deliver high-performance Front-end, Back-end, and Full-Stack web applications optimized for modern performance standards. Built with deployment flexibility in mind, your application can scale effortlessly via AWS cloud infrastructure or operate securely in a 100% offline, local environment.

About Me

With over 5 years of full Software Development Life Cycle (SDLC) experience at Amazon, I have built a career at the intersection of technical excellence and strategic process improvement. My background in full-stack development, combined with a deep specialization in AWS cloud infrastructure, has allowed me to consistently deliver high-availability applications that solve complex business challenges.


Throughout my tenure at Amazon, I have implemented and maintained multiple production applications end-to-end. One of my most significant recent achievements involved overhauling legacy ticket processes by architecting an automated GenAI pipeline using AWS EventBridge, Lambda, Bedrock, and internal APIs, which resulted in a 99% reduction in manual operational effort and improving scalability. I have also led critical infrastructure migrations to AWS CDK, ensuring self-mutating, automated CI/CD pipelines that reduce tech debt and provide long-term maintainability and scalability. Whether resolving high-priority security vulnerabilities—such as the RDS security group violations — or developing global executive dashboards with React and Node.js that reducing maintenance effort by 50% and improving performance by over 30%, my focus remains on building robust, secure, and user-centric solutions.


Beyond my technical contributions, I am a dedicated mentor and collaborator. I have successfully guided new team members through comprehensive code review processes and knowledge-sharing sessions, leading to measurable improvements in deployment stability and team performance. I thrive in environments that value high engineering standards, cross-functional collaboration, and the proactive application of emerging technologies like AI to the software development lifecycle.


Professional Skills

Front-end - React & Typescript
  1. Modern UI Development: Experienced in building robust, responsive single-page applications (SPAs) and user interfaces utilizing modern React and TypeScript ecosystems.
  2. Legacy Modernization: Skilled in migrating outdated, code-based front-ends to scalable components and state management architectures, significantly reducing long-term maintenance overhead.
  3. Data Visualization: Proficient in creating data-dense, interactive analytics dashboards and global reporting interfaces that support cross-functional, data-driven decision-making.

Back-end - NodeJS & Express
  1. Scalable Microservices: Experienced in architecting high-throughput RESTful APIs, distributed microservices, and backend middleware across multiple language runtimes, including Node.js, Python, and Java.
  2. Intelligent Automation: Adept at building automated cross-region event processing systems, workflow orchestrators, and intelligent AI-powered solutions to streamline operational efficiency.

Database - SQL & NoSQL
  1. Data Modeling & Architecture:: Proficient in both relational database modeling (MySQL/PostgreSQL) and schema-less NoSQL data structures, ensuring high availability and system alignment.
  2. Performance Optimization: Skilled in query tuning, managing connection pooling, and handling cross-region data synchronization to ensure high-throughput, low-latency performance.
  3. ETL & Data Consistency: Experienced in automating automated workflows and data integration pipelines to validate high-volume datasets, accelerate ingestion, and maintain strict data consistency.

AWS Cloud Solutions
  1. Infrastructure as Code (IaC): Specialized in defining, managing, and standardizing infrastructure through AWS CDK, replacing legacy setups with self-mutating frameworks.
  2. CI/CD & Serverless Pipelines: Expert in designing secure, multi-stage deployment pipelines (Beta, Gamma, Prod) using core serverless AWS components like Lambda, API Gateway, EventBridge, S3, and CloudFront.
  3. Security & Resilience: Strong background in proactive cloud vulnerability remediation, threat modeling, secure subnet configuration, and credential management for business continuity.

Career Endeavour

May 2020 - Apr 2026

Web Apps Business Analyst | Amazon

  1. Overhauled legacy ticket processes with an automated pipeline utilizing AWS EventBridge, Lambda, Amazon Bedrock (Claude), and internal Ticket APIs, increased scalability and eliminated 99% of manual process.
  2. Modernized deployment pipeline by replacing unsupported infrastructure packages to AWS CDK for self-mutating, automated CI/CD, ensuring long-term maintainability.
  3. Collaborated with Senior SDEs to deliver new front-end components using React and Redux store and new middleware APIs using Java, helping streamline the planning for new hire training and ensuring data persistence.
  4. Mentored 2 new team members, leading weekly ramp-up sessions and bi-weekly knowledge-sharing sessions, implementing comprehensive code reviews process, resulted in more than 20% decrease in deployment failure
  5. Developed and maintained a Global Executive Dashboard using React.js, NodeJS, AWS Cloud services to provide holistic view of OT/VTO to leaderships, driving data-driven decisions across network
  6. Automated ETL workflows using AWS Glue and custom SQL queries to prepare and validate high-volume datasets into AWS RDS, ensuring 100% data consistency and enhancing ingestion speed
  7. Revamped a legacy Real-Time monitoring web application from JavaScript/HTML code-based front-end to React.js and EC2/Java backend to AWS SDK/NodeJS, reducing maintenance effort by 50% and improving performance by more than 30%
Feb 2017 - May 2020

Sr. Workflow Analyst | Amazon

  1. Streamlined the planning data reporting processes using Excel Power Query to connect directly to data sources, transforming manual spreadsheet updates into a scalable, one-click refreshing dashboard for improved strategic decision-making
  2. Spearheaded bi-weekly strategic planning meetings with operation managers across network to optimize staffing coverage and proactively align resources to meet changing, high-priority demands
  3. Mentored junior staff on departmental workflows and procedures, facilitating their career growth and resulting in 3 conversions from acting to permanent positions
Jan 2014 - Feb 2017

Customer Service Manager | Amazon

  1. Led a team of 6–15 associates, using performance metrics to coach and develop individuals, resolve complex escalations, and maintain peak customer experience standards
  2. Identified performance trends through data analysis and implemented targeted coaching plans that improved individual and team metrics
  3. Fostered a team culture of accountability, continuous improvement, and customer-first thinking