JASON CHO
Rockville
Summary
Mid-level Frontend / Full-Stack Engineer with 5+ years of experience building modern, scalable, and accessible applications for government and enterprise clients. Proficient in React.js, Angular, JavaScript (ES6+), and TypeScript, with expertise in responsive design and 508/WCAG accessibility standards. Skilled in UI/UX design and optimization, delivering cross-browser compatible and mobile-first solutions that enhance user engagement. Backend exposure with Node.js, Express.js, and Python, developing APIs and integrating frontend with backend services. Experienced with cloud platforms (AWS, Azure) and DevOps tools (Docker, GitHub Actions, Jenkins) for deployments and CI/CD automation. Collaborative in Agile/Scrum environments, with proven ability to work across design, QA, and DevOps teams to deliver production-ready applications.
Overview
8
8
years of professional experience
Work History
Senior Full-Stack Engineer, Consultant at Internal Revenue Services (IRS)
Accenture Federal Services
02.2022 - 05.2025
- Designed, built, and deployed features for the IRS digital mail platform and dashboard, improving taxpayer–IRS interactions and reducing processing delays.
- Optimized backend architecture with Node.js and AWS, enhancing scalability for high-volume online submissions.
- Developed responsive React components with a focus on 508 accessibility and cross-browser compatibility.
- Collaborated with UX teams to redesign UI/UX flows, enabling the IRS to handle more secure filings efficiently.
- Built and deployed AWS serverless Lambda and Step Functions to automate workflows and integrate digital mail services.
- Strengthened security and compliance by implementing OAuth2 authentication and encryption for sensitive taxpayer data.
- Automated CI/CD pipelines with Docker, Jenkins, and GitHub Actions, improving release reliability.
- Mentored junior developers on React best practices and AWS integration, contributing to team-wide knowledge growth.
- Environment: React.js, JavaScript, TypeScript, Node.js, Express.js, REST APIs, AWS (Lambda, Step Functions, S3, EC2), Docker, Jenkins, GitHub Actions, Redux, HTML5, CSS3, 508 Accessibility, Agile/Scrum.
Junior Frontend Developer
Dantech Corporation
06.2021 - 11.2021
- Designed and enhanced UI/UX for corporate websites, modernizing layouts for accessibility and usability.
- Built and deployed interactive frontend features with React.js hosted on AWS, improving user experience across enterprise platforms.
- Collaborated with cloud engineers to enforce AWS cloud security standards, protecting sensitive data.
- Implemented lazy loading, caching, and code-splitting to improve page load times.
- Assisted in building RESTful API integrations to connect frontend systems with backend services.
- Created cross-browser compatible components ensuring consistent user interactions.
- Applied Agile methodologies to support iterative development, testing, and releases.
- Participated in daily standups and code reviews, contributing to team-wide productivity improvements.
- Environment: React.js, JavaScript, HTML5, CSS3, Bootstrap, Tailwind CSS, REST APIs, AWS, Figma, Git, Agile/Scrum.
Junior Frontend Developer
JKosmmune LLC
08.2017 - 12.2018
- Built and customized Shopify storefronts using HTML, CSS, and JavaScript for responsive, mobile-first designs.
- Enhanced UI/UX workflows, increasing customer engagement and storefront performance.
- Integrated MongoDB and SQL databases for handling and managing customer data.
- Developed custom Shopify templates, improving usability and brand consistency.
- Debugged cross-browser issues to ensure compatibility across multiple platforms.
- Applied SEO best practices for improved online visibility and customer reach.
- Collaborated with product and marketing teams to refine features and release cycles.
- Delivered bug fixes and improvements through Agile sprints, aligning with business goals.
- Environment: Shopify, JavaScript, HTML5, CSS3, SQL, MongoDB, Bootstrap, Responsive Design, Git, Agile/Scrum.
Education
Bachelor’s Degree -
University of Michigan
Ann Arbor, MI12.2014
Skills
- Languages: JavaScript (ES6), TypeScript, HTML5, CSS3, Python, SQL
- Frontend: Reactjs, Angular, Bootstrap, Tailwind CSS, Material UI, Responsive Design, Accessibility (508, WCAG), Figma
- Frameworks & Libraries: Redux, Nodejs, Expressjs
- Backend & APIs: REST APIs, GraphQL, Microservices
- Databases: MongoDB, PostgreSQL, MySQL
- Cloud & DevOps: AWS (EC2, S3, Lambda, Step Functions), Azure, Docker, Git, GitHub, GitLab, Jenkins
- Testing: Jest, Cypress, Selenium, Postman
- Tools & Others: Webpack, Babel, NPM, Yarn, VS Code, Jira, Agile/Scrum
OTHER EXPERIENCE:
- Campaign Mail & Data – Vienna, VA
- Nov 2015 – Nov 2016
- Data Entry Clerk
- Analyzed and recorded various types of documents into the database with high accuracy and efficiency.
Timeline
Senior Full-Stack Engineer, Consultant at Internal Revenue Services (IRS)
Accenture Federal Services
02.2022 - 05.2025
Junior Frontend Developer
Dantech Corporation
06.2021 - 11.2021
Junior Frontend Developer
JKosmmune LLC
08.2017 - 12.2018
Bachelor’s Degree -
University of Michigan