I am product designer, indie maker, and digital nomad living in internet.
Hi, i’m Stefeny i’m a freelance product designer with 12+ years of experience focusing on app interfaces.
Company I Worked With
Education & Experience
Established history of success in design and development, consistently delivering valuable insights and driving significant results.
Skills
Front-End
JavaScript
- ES6
- React
- TypeScript
- Next.js
- Gatsby
- Apollo
- Webpack
- GraphQL
- D3.js
- Leaflet
- Mapbox
- Leaflet
- Redux
- MobX
- Web3 (ethers.js)
Front-End
JavaScript
- ES6
- React
- TypeScript
- Next.js
- Gatsby
- Apollo
- Webpack
- GraphQL
- D3.js
- Leaflet
- Mapbox
- Leaflet
- Redux
- MobX
- Web3 (ethers.js)
Front-End
JavaScript
- ES6
- React
- TypeScript
- Next.js
- Gatsby
- Apollo
- Webpack
- GraphQL
- D3.js
- Leaflet
- Mapbox
- Leaflet
- Redux
- MobX
- Web3 (ethers.js)
Experience
March 2018 - May 2018
React Developer
I am a full-stack developer with focus on PERN/MERN stack and 10+ years of experience delivering software. My Toptal profile is available here.
Development tools:
- Javascript
- React Native
- Redux
March 2018 - May 2018
React Developer
I am a full-stack developer with focus on PERN/MERN stack and 10+ years of experience delivering software. My Toptal profile is available here.
Development tools:
- Javascript
- React Native
- Redux
March 2018 - May 2018
React Developer
I am a full-stack developer with focus on PERN/MERN stack and 10+ years of experience delivering software. My Toptal profile is available here.
Development tools:
- Javascript
- React Native
- Redux
Our Projects
Check out my portfolio of top-notch projects that I’ve delivered to both clients and the community. I’m more than happy to answer any questions you may have about how we can collaborate to achieve your objectives. Feel free to get in touch with me.
Provenance
As a fractional CTO I helped the team with strategic consult on the product development roadmap. I managed and led team of developers.
Development tools:
- AWS EC2
- Node.js
- React.js
GoSchoolBox
GoSchoolBox is a SaaS platform that serves as the technical infrastructure layer between school districts and tutoring companies. The number of users grew from 50k to 1mil.
Development tools:
- AWS
- Node.js
- MongoDB
Stackbit
Stackbit is a website builder that helps developers of any level to build their own Jamstack sites based on Next.js and Tailwind, fast.
Development tools:
- React
- Node.js
- MongoDB
- Typescript
Projects
Check out my portfolio of top-notch projects that I’ve delivered to both clients and the community. I’m more than happy to answer any questions you may have about how we can collaborate to achieve your objectives. Feel free to get in touch with me.
Apple ***
Web portal in React.js, which allows Apple ***
Development tools:
- React
- Framer Motion
GoSchoolBox
GoSchoolBox is a SaaS platform that serves as the technical infrastructure layer between school districts and tutoring companies. The number of users grew from 50k to 1mil. The GoSchoolBox platform has suffered from a significant number of application stability issues such as spontaneous error messages, gateway timeout errors, slow page load times and slow user flows. My role as a software architect was to ensure platform stability, resiliency, and scalability. I helped the team to integrate and set up APM with metrics and performance dashboards to detect and diagnose end-users’ experience with mission-critical services. I refactored and fixed critical user flows to improve user flow performance, server throughput and page load performance.
Development tools:
- AWS
- Node.js
- MongoDB
Provenance
As a fractional CTO I helped the team with strategic consult on the product development roadmap. I managed and led team of developers. I made code reviews to identify issues before they translate into technical debt. I helped developers with best practices and leverage tooling to speed up the development process and ensure code quality. I architected and built project’s infrastructure, CI pipeline and third-party integrations.
Development tools:
- AWS EC2
- Node.js
- React.js
Education & Experience
Established history of success in design and development, consistently delivering valuable insights and driving significant results.
Front-End
JavaScript
- Single-page Applications (SPA)
- ES6
- React
- TypeScript
- Next.js
- Gatsby
- Apollo
- Webpack
- GraphQL
- D3.js
- Leaflet
- Mapbox
- Leaflet
- Redux
- MobX
- Web3 (ethers.js)
Back-end
HTML & CSS
- Responsive websites
- Tailwind
- CSS-in-JS (Emotion, styled-components, Material UI)
- SASS
- Material
- UI Bootstrap
Others
Lorem Ipsum
- Chrome Extensions
- DevOps
- Headless CMS (Contentful, Prismic, Strapi)
- Search engine optimization (SEO)
- UI Prototyping
- Designing RESTful APIs
Fractional CTO | Software Architect | Full-Stack Developer
September 2016 - Present
I am a full-stack developer with focus on PERN/MERN stack and 10+ years of experience delivering software. My Toptal profile is available here.
React Developer
July 2018 - May 2019
- Built company's fully responsive website.
- Built customizable UI components used across multiple projects.
- Built functional prototype of funds management and payments system in exchange platform.
Development tools:
- Javascript
- React
- Gatsby
- GraphQL
- Styled-Components
- Typescript
React Developer
May 2018 - July 2018
- Designed and built a functional prototype of event management platform for managing swimming teams and swimming competitions.
- Designed a new user interface based on customer’s prototypes.
- Built a functional prototype from scratch as a single page application.
Development tools:
- Javascript
- React
- Redux-Saga
React Developer
March 2018 - May 2018
- Helped deliver a React Native project used for managing fitness studios.
- Fixed various bugs and issues in the project.
- Optimized the project for the Android platform.
Development tools:
- Javascript
- React Native
- Redux
Full-Stack Developer
August 2017 - May 2018
- Designed and built an interactive podcast platform.
- Designed and developed a RESTful API server using Heroku, Amazon S3, Node.js, Koa, PostgreSQL, and integration with Twitter API.
- Listeners are engaged with content, such as social media posts or preview of external web pages.
Development tools:
- Javascript
- React Native
- Redux
link-preview-generator
Lorem Ipsum
User authentication in a single page application (SPA), built with Node.js and React. Local authentication – users can log in using username, passport and authentication through Facebook.
Development tools:
- Javascript
- Node.js
- React
- Redux
- Redux-Saga
- Passport.js
- Koa.js
- Oath
auth-flow-spa-node-react
Lorem Ipsum
User authentication in a single page application (SPA), built with Node.js and React. Local authentication – users can log in using username, passport and authentication through Facebook.
Development tools:
- Javascript
- Node.js
- React
- Redux
- Redux-Saga
- Passport.js
- Koa.js
- Oath
neo-transfer
Lorem Ipsum
Neo-transfer allows you to login with a private key, see balance and transfer NEO or GAS within TestNet. Project is based on JS SDK for NEO blockchain.
Development tools:
- Javascript
- React
- Redux
- Redux-Saga
- Neon
- Blockchain
