Steve is available for hire

Steve Johnson

Verified Expert in Engineering

System Design Developer

San Francisco, CA, United States

Toptal member since May 13, 2022

Expertise

React.js TypeScript JavaScript CSS HTML5 Algorithms Front-end Full-stack

Bio

Steve has worked in tech for four years, with three years of full-stack engineering experience. He has created education, bike share, marketing, and sales software that millions of people have used, and he loves delivering digital products that make value.

Portfolio

PeerTeach

Python, Flask, React, SQL, Linux Server Administration, DevOps, MVP Design

SlashAuth

React, GraphQL, NPM, MVP Design

Quickcard

React, Node.js, TypeScript, Express.js, PostgreSQL, Full-stack Development...

Experience

System Design - 8 years
React - 4 years
TypeScript - 3 years
Full-stack Development - 3 years
Express.js - 3 years
Node.js - 3 years
JavaScript - 3 years
PostgreSQL - 2 years

Availability

Part-time

Preferred Environment

MacOS, Slack, WebStorm

The most amazing...

...software I've created is a full analytics stack for a web startup.

Work Experience

Software Engineer

2022 - 2023

PeerTeach

Created printing, scanning, and grading systems for classroom assessments.
Managed a MongoDB-to-PostgreSQL migration and database refactoring.
Created onboarding tours and implemented product analytics.

Technologies: Python, Flask, React, SQL, Linux Server Administration, DevOps, MVP Design

Senior Software Engineer

2022 - 2022

SlashAuth

Created an npm package for drop-in authorization components.
Refactored an administrator portal to allow sub-administrators.
Restyled a dashboard to Figma design standards with Tailwind CSS.

Technologies: React, GraphQL, NPM, MVP Design

CTO

2020 - 2022

Quickcard

Developed a sales document editor with text, image, video, and web embeds.
Crafted a full analytics stack allowing users to track document interactions.
Engineered a client link creation process that includes selecting resources, tailoring criteria, injecting variables, and providing alternative recommendations.

Technologies: React, Node.js, TypeScript, Express.js, PostgreSQL, Full-stack Development, Software Architecture, Technical Leadership, Full-stack, User Experience (UX), User Interface (UI), Back-end, APIs, Back-end Development, QA Automation, Leadership, HTML5, Architecture, IT Strategy, CTO, SVG, Animation, Amazon Web Services (AWS), Algorithms, Front-end, Software Engineering, SQL, MVP Design

Full-stack Engineer

2019 - 2020

Studio Corsair

Created a performance metric dashboard aggregating data from Google Ads, Google Analytics, Facebook Ads, and Shopify APIs.
Engineered a cost-per-acquisition table breaking down costs by customer location.
Built a Bash shell script to streamline the creation of version release notes.

Technologies: PostgreSQL, TypeScript, Node.js, Express.js, QA Automation, Heroku, Bootstrap

Front-end Engineer

2019 - 2019

PrepFactory

Created a calendar application with a drag and drop interface.
Engineered a scientific calculator and question-overlay whiteboard.
Developed a teacher onboarding flow with animations.

Technologies: JavaScript, React, CSS, HTML, Web Animation, UI Animation, Leadership, Animation

Software Engineer

2019 - 2019

LINKA Technologies

Created a customer onboarding automation system with Shopify, Mailchimp, Typeform.io, HelloSign, HubSpot, Stripe, and Zendesk webhooks and APIs.
Integrated Authorize.net's payment support into back-end payment infrastructure.
Migrated payment systems to comply with Stripe Strong Customer Authentication (SCA).

Technologies: MongoDB, JavaScript, Node.js, Meteor, NestJS, AngularJS, Java, Android, Webhooks, Leadership, Angular, MEAN Stack, Bootstrap, jQuery, Mobile

Experience

Sales Deck Web App

Built a document editor, a send process, and resource management views. I also created analytics and integration systems. As a software engineering generalist, I worked on everything through the front and back end.

Marketing Analytics

Developed a TypeScript application for analyzing digital marketing activity for online stores. I built out views that took data from Google Ads, Google Analytics, Facebook Ads, and Shopify APIs. This data was divided into high-level insights and actionable items to improve marketing effectiveness.

Bike Share Software

https://www.linkalock.com/

Created software to manage bike-share hardware. We created systems to manage payments, monitor bicycle location and status, and analyze customer activity. Migrating to new hardware devices and back-end tools, we took this startup to the next level of operation.

Tutoring Application

https://www.prepfactory.com/

Orchestrated a React front end for a tutoring service. I built an onboarding system that guided tutors through their web views. I created a scientific calculator, a whiteboard overlay, and a scheduling system in those views.

Education

2012 - 2016

Bachelor's Degree in Engineering

University of Maryland - College Park, MD

Skills

Libraries/APIs

React, Node.js, jQuery

Tools

WebStorm, Slack, NPM

Languages

TypeScript, JavaScript, CSS, HTML5, HTML, SQL, Java, Python, GraphQL

Frameworks

Express.js, NestJS, AngularJS, Angular, Bootstrap, Redux, Flask

Paradigms

DevOps, MEAN Stack

Platforms

Amazon Web Services (AWS), MacOS, Meteor, Android, Heroku, Mobile

Storage

PostgreSQL, MongoDB

Other

System Design, Software QA, Full-stack, Full-stack Development, Software Architecture, Technical Leadership, Web Animation, UI Animation, User Experience (UX), User Interface (UI), Back-end, APIs, Webhooks, Back-end Development, QA Automation, Leadership, Architecture, IT Strategy, CTO, Algorithms, Front-end, Software Engineering, MVP Design, SVG, Animation, Linux Server Administration

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