# John Ballon

> Senior Software Engineer at Calm

Location: New York, New York, United States
Profile: https://flows.cv/johnballon

I love to code.

## Work Experience
### Senior Software Engineer @ Calm
Jan 2021 – Present

### Software Engineer @ Calm
Jan 2020 – Jan 2021

### Freelance Software Engineer @ Toptal
Jan 2020 – Present

### Software Engineer @ Ark Behavioral Health
Jan 2020 – Jan 2020 | Quincy, Massachusetts, United States
• Migrated React-based web applications to TypeScript.
• Worked with the design team to implement pixel-perfect responsive designs using CSS3, media queries, flexbox, CSS Modules, and preprocessor SASS.
• Performed Cross Browser Testing to ensure that React, Gatsby.js, or Next.js application code was properly polyfilled and working as expected on various browsers and operating systems.
• Utilized the Google Dev Tools Lighthouse feature to gather information related to Performance, SEO, Best Practices, and Accessibility and implemented suggestions to improve search engine position.
• Wrote unit, integration, and end-to-end (e2e) tests for Express.js back-end and React Components on the front-end using Cypress and Jest to improve test coverage.
• Created, configured, and maintained Linux-based Nginx servers to efficiently serve Single Page Applications (SPAs) and static content.
• Used React Dev Tools Performance Profiler to gain a finer-grain understanding of component rendering lifecycles and implemented performance optimizations where possible.
• Authored AWS service orchestration script using TypeScript to parallelize the generation of the static data required by our statically built web applications and improved build time by an exponential factor.
• Maintained infrastructure on AWS that consisted of various Elastic Beanstalk environments, CI/CD pipelines, and supporting services.

### Software Engineer @ WeCampaign
Jan 2018 – Jan 2020 | Greater Los Angeles Area
• Developed a 27,000-page full-stack directory application with geospatial search capabilities using React, Redux, Express.js, PostgreSQL, Docker, and AWS.
• Improved performance of web applications by identifying rendering bottlenecks through the use of the React Dev Tools Performance Profiler.
• Improved accessibility of React components that lacked semantic HTML5 tags through the application of ARIA labels and WAI-ARIA Roles, Properties, and States.
• Styled React components with pixel-perfect accuracy and added responsive layout with CSS3, SASS, and CSS Modules. 
• Performed Single Page Application-based SEO research and implemented best practices using React-based static site generators Next.js and Gatsby.js.
• Implemented various data collection scripts using Selenium to automate the gathering of actionable data.
• Constructed continuous delivery pipelines on AWS using CodePipeline and CodeDeploy to automatically deploy changes made to application code.

### Software Engineer/System Engineer @ JustHive
Jan 2017 – Jan 2018 | Greater Los Angeles Area
• Collaborated with the development and design teams to build a React/Redux-based User Portal that interfaced with RESTful APIs to perform changes to user content.
• Migrated HTML4 to HTML5 by replacing divs with semantic tags wherever possible.
• Worked directly with the CEO and CTO to deconstruct complex features into actionable prioritized tasks with estimated timelines.
• Built and maintained over ten microservices that exposed REST APIs written with Express.js to support various aspects of the application.
• Managed and expanded cloud infrastructure on AWS, which included Elastic Beanstalk, CloudFormation, DynamoDB, Lambda, S3, Elastic Container Registry, Simple Queue Service, Simple Notification Service, Cognito, and X-Ray.
• Developed a cryptocurrency for company ICO on Ethereum's blockchain.

### 10x Club Teaching Assistant @ App Academy
Jan 2017 – Jan 2017 | San Francisco Bay Area
• Supported instructor with teaching algorithms, data structures, and interview skills to experienced software engineers.
• Oversaw whiteboarding to ensure students learned proper form and implemented optimal solutions.
• Provided graduates with ongoing resume/portfolio support as they applied to and interviewed with various companies.

### Hacker-in-Residence @ App Academy
Jan 2017 – Jan 2017 | San Francisco Bay Area
• Led a team that implemented improved UI and logic using React/Redux for App Academy admissions dashboard, creating an intuitive user experience.
• Refactored portions of the codebase from Embedded Ruby to React/Redux.
• Guided web developer student applicants through technical interviews while assessing algorithmic thinking and providing constructive feedback.


## Education
### Bachelor's degree in Finance, General
The College of New Jersey
Jan 2012 – Jan 2016


## Contact & Social
- LinkedIn: https://linkedin.com/in/john-ballon-3b021113a

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Source: https://flows.cv/johnballon
JSON Resume: https://flows.cv/johnballon/resume.json
Last updated: 2026-03-22