Johann V.

Johann V.

Senior Full-stack Developer

San Francisco, United States of America
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About Me

Johann is a Senior Full-stack Developer with up-to-date knowledge of modern React tools and JavaScript frameworks and libraries for building and delivering distributed software solutions with attention to quality. He works on technologically sound and aesthetically impressive projects, developing user interface components and front-end solutions that enhance the user experience on multiple projects.

Work history

UpStack
UpStack
Senior Full-stack Developer
2022 - Present (3 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

LunarCrush
LunarCrush
Senior Full-stack Developer
2024 - 2024
Remote
  • Improved legacy React code based on best practices and served as a lead front-end developer for improvements.

  • Worked with Ethereum, Polygon, and other EVM-compatible chains like deploying and integrating Smart Contracts using Solidity, Web3.js, and Ether.js.

  • Led the migration of a large-scale web application from React and Node.js to Next.js and GraphQL, making significant performance and maintainability improvements.

  • Trained the development team for working with Next.js and GraphQL and mentored junior developers.

  • Refactored and updated the existing React Native applications for iOS and Android platforms.

React Next.jsTypescriptApollo-GraphQLHTML5CSS3Node.jsWeb3 Ether.jsSoliditySmart ContractsEthereum Smart Contracts ethereumPolygon Ethereum Virtual Machine (EVM)
Escape Velocity (EV3)
Escape Velocity (EV3)
Full-stack Developer for Open-source Crypto Analytics Site
2023 - 2024 (1 year)
Remote
  • Implemented pixel-perfect and responsive front-end pages using React and Material UI, implementing dynamic components like tables, dialogs, modals, etc.

  • Developed RESTful APIs with Node.js and Express to handle user authentication and support CRUD operations like task management, category filtering, etc.

  • Integrated TypeScript for type safety across the front end and back end, improving code maintainability and quality.

  • Implemented Redux for global state management, optimizing data flow and ensuring seamless synchronization of user actions across components.

  • Optimized state updates and reduced unnecessary re-renders by integrating Redux-Thunk for asynchronous actions.

Sparkrock
Sparkrock
Front-end Engineer
2023 - 2023
Remote
  • Developed front-end web pages using Angular 10, TypeScript, Bootstrap, and LESS/CSS.

  • Translated Figma designs into pixel-perfect, mobile-friendly interfaces and built reusable Angular components.

  • Managed data by updating Microsoft 365 tables and integrated back-end APIs built with .NET Core.

  • Collaborated with clients to gather and analyze requirements and provided comprehensive technical support.

Laurel Road
Laurel Road
Senior Front-end Developer
2022 - 2023 (1 year)
Remote
  • Refactored a huge codebase based on the best practices.

  • Migrated a React project from Reflux to Redux.

  • Created new custom hooks, implemented pixel-perfect Figma design, and updated the npm library for UI components.

Omniscience
Omniscience
React Developer
2021 - 2021
United States of America
  • Developed and implemented front-end components on an admin dashboard using different tools to improve performance.

  • Delivered end-to-end integration solutions on the dashboard using different AWS services.

  • Implemented and integrated GraphQL mutations, queries, and subscriptions with AppSync resolver on the admin dashboard.

CivImpact Labs
CivImpact Labs
Senior Front-end Developer
2021 - 2021
United States of America
  • Designed, built, and deployed a new SPA solution using modern front-end tools, libraries, and frameworks.

  • Worked on new UI solutions and implemented a video/audio conference feature on the SPA.

  • Managed REST API integrations using Axios and Redux-Thunk to enhance the workings of different components.

Assured Insurance Technologies
Assured Insurance Technologies
Webflow Expert
2021 - 2021
United States of America
  • Designed and developed a Webflow-based website using tools from the Webflow library.

  • Iterated and implemented Figma designs into responsive, pixel-perfect UI solutions.

  • Worked on third-party integrations with different systems on the project.

Modzy
Modzy
Senior React.js Developer
2021 - 2021
United States of America
  • Designed and deployed the admin dashboard powering Modzy's AI platform.

  • Translated designs into high-quality front-end solutions and delivered complex charts for data visualization.

  • Designed integration solutions for GraphQL queries and mutations, integrating them into the admin dashboard.

Etison
Etison
Senior React.js Developer
2020 - 2021 (1 year)
United States of America
  • Designed and built components, templates, dialogs, and workflows on the Editor app for ClickFunnels.

  • Executed a drag-and-drop feature for the editor using JavaScript Canvas API.

  • Migrated ERB templates to React and integrated REST APIs with the new solution.

ArcheTape
ArcheTape
Senior Front-end Developer
2020 - 2020
Remote
  • Designed, developed, and implemented a responsive web application, marketing website, and cross-platform mobile apps.

  • Implemented messaging/chat functionalities on a SaaS product with integration to FCM for push notifications.

  • Integrated several third-party React and React Native packages with the SaaS product.

LoungeBuddy
LoungeBuddy
Senior Front-end Engineer
2018 - 2020 (2 years)
United States of America
  • Built out and implemented mobile-friendly web pages with a modern user experience.

  • Designed and deployed a new iOS app built with React Native, implementing offline and online syncing functionalities for users.

  • Integrated the solution with back-end APIs and third-party systems and ran unit tests to increase test coverage.

Pleroma Social
Pleroma Social
Full-stack Developer
2016 - 2017 (1 year)
United States of America
  • Designed and implemented front-end pages and deployed a simplified alert solution to enhance customer support.

  • Worked on a universal search feature on an analytic app to display data entities within a single interface.

  • Developed and implemented multiple APIs for different back-end solutions.

Freelance
Freelance
Full-stack Developer
2014 - 2016 (2 years)
Remote
  • Built and maintained several software solutions for clients, bringing UI designs and interactions to life and implementing several websites.

  • Drove new features on solutions from start to finish through prototyping, validation, implementation, launch, and continuous iteration.

  • Performed technical and functional analysis of solutions on multiple projects, diagnosing and resolving complex issues.

Portfolio

Webflow Expert - Assured Insurance Technologies, Inc
Webflow Expert - Assured Insurance Technologies, Inc

Assured’s Claims Intelligence Platform helps users ingest and augment structured claims data, empowering them to make good decisions. Designed and built the website using Webflow CMS, Webflow UIKit, JavaScript, jQuery, HTML, and CSS. Implemented responsive UI solutions and integrated third-party systems with the platform.

Front-end Developer — Intellimize
Front-end Developer — Intellimize

Designed, built, and released front-end solutions on the Intellimize Editor app, adding new functionalities and implementing pixel-perfect Figma designs. Created new hooks to clean up the codebase, updated the UI components, fixed lint issues, and wrote unit tests on the solution.

Senior Front-end React Developer - Modzy Inc
Senior Front-end React Developer - Modzy Inc

Modzy is the ModelOps and MLOps software platform that businesses use to deploy, integrate, run, and monitor AI solutions. Built an admin dashboard for the platform, implemented designs and several complex charts, and integrated GraphQL queries and mutations.

Education

Learn Data Analysis with Pandas Course
Learn Data Analysis with Pandas Course
Codecademy
2020 - 2020
Bachelor's Degree
Bachelor's Degree
Indiana University Bloomington
2012 - 2016 (4 years)