- Frontend: JavaScript, TypeScript, React/Redux, GraphQL, Handlebars, Pug, CSS
- Backend: Node.js, Express.js, SQL, PostgreSQL, MongoDB, Apollo Server, Python, Go, RESTful APIs
- Tooling/Cloud/Other: AWS (Lamdba, S3, SQS, SDK, IAM, CloudTrail, EC2), Digital Ocean, Heroku, Git/GitHub, Docker, Jest, React Testing Library, Mocha.js, Chai.js, OpenApi Specification