John Vandivier

Software Engineer

Centreville, Virginia, United States12 yrs experience
Most Likely To SwitchAI ML Practitioner

Key Highlights

  • Ph.D. in Economics with a decade of software development experience.
  • Mentor and educator with 30k+ followers teaching programming.
  • Led AI product development for a $10B+ HR-tech platform.
Stackforce AI infers this person is a Full-Stack Developer with expertise in AI and Fintech.

Contact

Skills

Core Skills

Artificial Intelligence (ai)Software DevelopmentLeadershipFull-stack DevelopmentAmazon Web Services (aws)Data VisualizationWeb DevelopmentManagement

Other Skills

Python (Programming Language)Ruby on RailsGenerative AITypeScriptStatic AnalysisKubernetesFastAPIJenkinsDjangomypyRubyAmazon S3GitHubFlaskReact.js

About

John brings a unique background including a decade of software development and data analysis experience, a Ph.D. in Economics, and a prior life in D.C policy work. John is proud open source contributor, mentor, and educator, teaching programming to over 30k+ followers across social media channels.

Experience

12 yrs
Total Experience
1 yr 4 mos
Average Tenure
1 yr 9 mos
Current Experience

Gusto

Staff Software Engineer

Aug 2024Present · 1 yr 9 mos · Virginia, United States · Remote

  • AI Tech Lead in Gusto's 130+ headcount Retirement Engineering organization. Gusto is a $10B+ leading HR-tech, payroll, benefits, and people operations platform. I'm proud to help Gusto serve more than 400k US Small Businesses!
  • (Joined via Guideline acquisition, November 2025)
  • Developed more than 10 AI products including agentic, fully automated, and human-in-the-loop solutions with interfaces including Salesforce, Slack, and bespoke application interfaces
  • Implemented Gemini and Open AI support in Python and Ruby
  • Evaluation and guardrails to ensure safe deployment of regulated output with high accuracy, precision, customer satisfaction, and low cost and latency
  • Created a detailed intake and design process for AI projects, mitigating risk and optimizing delivery of measurable business value
  • Build vs Buy decisions and corporate training leading to stakeholder activation, high stakeholder AI literacy, and prompt engineering from technical and non-technical individuals
Python (Programming Language)Ruby on RailsGenerative AIArtificial Intelligence (AI)Software Development

Upstart

Senior Software Engineer

Mar 2022May 2024 · 2 yrs 2 mos · Alexandria, Virginia, United States · Remote

  • An AI lending platform that partners with banks and credit unions to provide consumer loans using non-traditional variables, such as education and employment, to predict creditworthiness. Employs 1350+ people and generates $515M+ annually.
  • Achievements:
  • Increased revenue by 10% per month by delivering core pricing logic for auto-secured personal loans.
  • Founded and organized the monthly Python Guild attended by 1/3 of corporate ICs, helping solve dozens of out-of-team issues per half, resulting in 10 days of engineering saved monthly.
  • Reduced Python static analysis errors by 50% and improved lint performance by 98%, optimizing multiple components by implementing mypy, sonarqube, and ruff leading to reduced production errors.
  • Championed and developed the Escape Velocity service starter, accelerating enterprise Python library publishing by 80%.
  • Interview, onboard, and mentor developers. Assist leadership in prioritization and negotiate scope with partners. Championed generative AI and multiplier tools.
  • Hundreds of TPS scale.
TypeScriptStatic AnalysisLeadershipKubernetesFastAPIAmazon Web Services (AWS)+10

Amazon

Cloud Engineer

Oct 2021Feb 2022 · 4 mos · Virginia, United States · Remote

  • Global e-commerce and cloud computing giant that offers a diverse range of products and services. Utilizes advanced algorithms and AI to enhance customer experience and operational efficiency. Employs 1.5M+ people and generates $469B+.
  • Achievements:
  • Led full-stack development with React, Node, TypeScript, and Java for the MyHR project, unifying HR systems across countries for improved record-keeping and legal compliance.
  • Led integration testing strategy with Java and JUnit. Created and assigned tasks to AWS staff and contractors.
  • Built AWS infrastructure using industry-standard Open Source tools like the AWS CDK in combination with Amazon-specific tools and processes.
  • For front-end testing, used Jest, Mocha, and Cypress. Automated testing for accessibility using jest-axe.
React.jsTypeScriptJavaJavaScriptAmazon Web Services (AWS)Integration Testing+7

Blue cross nc

Principal Developer

Jan 2021Oct 2021 · 9 mos

  • Leading health insurance provider that leverages technology and data analytics to improve patient outcomes and service quality. Employs 20K+ people and generates $127B+ annually.
  • Achievements:
  • Conducted full-stack development with JavaScript, TypeScript, Python, Seaborn, React, D3.js, Next.js, Drupal, and Docker to create user-friendly interfaces for medical professionals.
  • Provide a user-friendly interface for medical doctors to view and update patient data. Based on this data, visualize machine learning predictions about health outcomes.
  • Mentored junior developers.
React.jsTypeScriptJavaScriptData VisualizationPython (Programming Language)Material-UI+2

Capital one

Senior Software Engineer

Apr 2019Jan 2021 · 1 yr 9 mos · McLean, Virginia Area

  • Major financial services corporation that specializes in credit cards, auto loans, and accounts. Uses technology and personalized financial solutions to meet the diverse needs of consumers and businesses. Employs 52K+ people and generates $33B+ annually.
  • Achievements:
  • Led the COVID-19 response for CreditWise (a credit tool with over 40 million users and 10 million MAU) using Angular in AWS cloud to roll out finance-related content updates with reusable components, resulting in a 5% increase in site traffic.
  • Angular, TypeScript, Java, and other web technologies.
  • Replaced licensed screenshot testing software with an in-house solution, effectively saving $50,000+ annually in costs. Built with Cypress, Node.js, and ImageMagick.
  • Led the UI COVID response for web resulting in a 5% jump in traffic in early 2020.
  • You can view CreditWise below at https://creditwise.capitalone.com/ or click the link below ⤵️
Mocha (JavaScript Framework)TypeScriptAngularJavaScriptCypress.ioHTML+7

The college board

Full Stack Engineer

Nov 2018Mar 2019 · 4 mos · Reston, Virginia

  • A mission-driven not-for-profit organization known for its development and administration of standardized tests such as the SAT and Advanced Placement (AP) exams. Employs 1,600+ people and supports millions of students annually.
  • Achievements:
  • Full-stack development with React, Node, AngularJS, Bootstrap, Express, Puppeteer, React, Sequelize
  • Extensive AWS Cloud tech usage including CloudWatch, CodeCommit, CodeBuild, CodeDeploy, CodePipeline, Cognito, EC2, ECR, ECS, Lambda, IAM, RDS, and Route 53.
  • Implemented Node.js solutions for Sequelize seed and migration logic, Puppeteer tests, and Express server operations.
Amazon CognitoJavaScriptAWS LambdaAmazon Web Services (AWS)Node.jsSequelize+5

Halfaker and associates, llc

Lead Software Engineer

May 2017Oct 2018 · 1 yr 5 mos · Arlington, VA

  • Achievements:
  • Lead Developer for multiple AWS GovCloud projects with 10 developers across 3 companies, with the Department of Defense as our main client.
  • Run interviews, created a structured interview format, contribute to performance management, hiring, and firing decisions.
  • Full-stack development with Angular, Bootstrap, Express, Webpack, LoopBack, Jasmine, Karma, and React.
React.jsExpress.jsAngularJavaScriptManagementAmazon Web Services (AWS)+5

Saic

Lead Software Engineer

Jun 2015May 2017 · 1 yr 11 mos · Alexandria, Virgina

  • Achievements:
  • Web development in JavaScript and Java. Thick client development with VBA and the JavaScript API for Office.
  • Team lead for 9 developers and 4 non-developers within a Scaled Agile project of 50+ developers working with the United States Post Office (USPTO).
  • UI Architecture Group member, given SCM authority using SVN, Git, Jenkins, and Puppet.
  • Other technologies include jQuery, Oracle SQL, HandlebarsJS, RequireJS, NodeJS, Grunt, Java, JUnit, JPA, Spring, Maven, and Eclipse.
Section 508JavaJavaScriptWeb Content Accessibility Guidelines (WCAG)LeadershipVBA+3

Surgered

Director of Research

Dec 2014Aug 2015 · 8 mos · Alexandria, Virginia

  • Achievements:
  • Full stack web development with WordPress, HTML, CSS, JavaScript, jQuery, and PHP.
  • Data analysis and data ops with MySQL, MS Access SQL, Google Analytics, STATA, and Excel.
  • Web administration, DNS configuration, testing, deployment, and web vendor coordination.
  • Interviewed and onboarded new hires.
SQLJavaScriptMicrosoft ExcelFull-Stack DevelopmentPHP

Harden global

Director of Research

Jul 2013Dec 2014 · 1 yr 5 mos · Alexandria, Virginia

  • Achievements:
  • Full stack web development with WordPress, HTML, CSS, JavaScript, jQuery, and PHP.
  • Data analysis and data ops with MySQL, MS Access SQL, Google Analytics, STATA, and Excel.
  • Web administration, DNS configuration, testing, deployment, and web vendor coordination.
  • Interviewed and onboarded new hires.
SQLJavaScriptWordPressGoogle AnalyticsPHPFull-Stack Development

Education

George Mason University

Doctor of Philosophy - PhD — Economics

Jan 2017Jan 2021

George Mason University - Schar School of Policy and Government

Master's degree — Public Policy Analysis

University of Houston

Bachelor of Science (BS) — Economics and Political Science

GHS

Diploma

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