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David James Mitten

Senior Fullstack Developer

davidmitten88@gmail.com

DaveMitten

davidjamesmitten

@DavidJamesMitt1

davidjamesmitten.com

Professional Summary

Mission driven, startup veteran, 7+ years experienced fullstack developer with a strong background in Node.js, TypeScript, React, and cloud technologies. Proven track record of designing and implementing scalable microservices architectures and working with large data volumes. Adept at rapidly delivering value through efficient system design and best practices implementation.

Professional Experience

Lead Developer

Company:

ONE TRIBE

Dates:

Nov 2020Sept 2024

Duration:

3 yrs 11 mos

Location:

Remote

One Tribe is a carbon credit platform that allows users to track and offset their carbon footprint. Grew into lead engineering position while partnering with CTO to architect and scale One Tribe's carbon credit platform, enabling businesses to track, monitor, and offset their environmental impact.

Core Development:

Built custom BigCommerce application and engineered multi-platform webhook system integrating 6+ major e-commerce platforms (Magento, WooCommerce, BigCommerce, Shopify, Mailchimp, Gravity forms and more) and marketing tools, processing hundreds, sometimes thousands of daily events
Contributed to fullstack applications using React, Next.js, and Node.js with TypeScript, supporting 100+ active users
Collaborated with CTO to implement carbon milestone tracking system, managing environmental impact data for enterprise clients
Supported UI modernization by implementing Tailwind CSS, reducing stylesheet size by more than40% and accelerating component development
Developed custom Stripe payment processing handling $100K+ in revenue across multiple pricing tiers and products

Platform Improvements:

Assisted in building internal Next.js admin dashboard replacing Retool, reducing customer support response time and saving a minimum of 15+ engineering hours weekly
Helped establish CI/CD pipeline with GitHub Actions and Vercel, reducing deployment time.
Contributed to testing suite development achieving 75% coverage on critical paths
Implemented SSR-generated carbon impact pages for 100+ brands, improving load times and SEO considerably.

Infrastructure & Collaboration:

Participated in code reviews and supported junior developers while maintaining quality standards
Simplified onboarding process by reducing required steps by 60%, significantly decreasing user drop-off rates -Assisted in migration of 3GB of optimized text-based data from Firebase to Xata with zero downtime, improving query performance and handling 90,000+ cloud function invocations monthly

Skills:

JavaScript,

Next.js,

React,

TypeScript,

Tailwind CSS,

Stripe,

Node.js,

Express.js,

Contentful,

Vercel,

Jest,

GCP,

Xata,

PostgreSQL,

MongoDB,

Firebase,

NextAuth (Auth.js)

Software Engineer

Company:

Antler Digital

Dates:

Jan 2023Sept 2024

Duration:

1 yr 9 mos

Location:

Remote

Antler digital is a startup that helps companies build digital products. Expanded One Tribe's development capabilities through Antler Digital partnership, complementing primary role by contributing to diverse client projects in parallel.

Worked with MetaMask and Web3.js for blockchain integration for an NFT platform.
Created systems with Payload CMS, ensuring a flexible and scalable content management system.
Used github actions CI/CD for deployment locally and in production, ensuring a fast and reliable deployment process minimising human error.
Created unit tests with Jest, ensuring a comprehensive and reliable testing strategy, wherever we had budget to do so.

Skills:

JavaScript,

React,

Tailwind CSS,

TypeScript,

Next.js,

Node.js,

Express.js,

MongoDB,

Jest,

Python,

Django,

FastAPI,

docker,

AWS,

Payload CMS,

Stripe,

CI/CD,

Git,

GitHub,

Contentful,

Vercel

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Frontend Developer

Company:

Firstbase

Dates:

Jan 2020Sep 2020

Duration:

9 mos

Location:

Remote

Firstbase is a startup that helps companies bring remote working to their employees. Joined Firstbase as the founding engineer at pre-product stage, working directly with founders to architect and build the core platform that enabled enterprises to deploy and manage remote work operations at scale.

Rapidly mastered Java/Spring Boot tech stack, progressing from initial learning to production deployment in one week while maintaining team's development velocity
Strengthened platform quality through extensive test suite development, achieving 90%+ coverage across React components while implementing critical business features
Enhanced platform accessibility to WCAG 2.1 AA standards, improving user experience for screen readers and assistive technologies

Skills:

JavaScript,

React,

Java,

Spring Boot,

CSS,

A11y,

WCAG 2.1,

Test Automation,

Jest

React Developer

Company:

Beatchain

Dates:

Mar 2019Sep 2019

Duration:

7 mos

Location:

London, United Kingdom

Beatchain helps music companies access the $4bn+ unsigned artist market. Joined Beatchain at early-stage to develop their social media marketing platform, helping capture market share in the $4bn+ unsigned artist space by enabling streamlined multi-platform content management.

Developed consolidation social media scheduling system using React/Redux/Redux-Saga state management stack.
Implemented robust state management handling multi-platform posts for musicians in the $4bn+ unsigned artist market, supporting scheduling across 5+ major social networks from a single interface
Built scalable social media automation platform enabling artists to manage multiple accounts with 60% less time investment, supporting thousands of scheduled posts across Twitter, Instagram, Facebook, and more
Built and optimized frontend components with SASS, contributing to improved dashboard performance for artists

Skills:

JavaScript,

React,

Ant Design,

HTML,

CSS,

React Hooks,

React Router

React Developer

Company:

Currikula

Dates:

Nov 2018Mar 2019

Duration:

5 mos

Location:

London, United Kingdom

Currikula was a startup that helped students get better grades. Joined Currikula's founding engineering team, working directly with founders to build and scale an AI-powered educational platform from initial concept to supporting 290+ active students with automated essay improvement tools.

Spearheaded migration to architected scalable modern React/Typescript stack (CRA, ES6, Ant Design), enabling rapid feature deployment and supporting 290+ active users with zero downtime
Implemented modern ES6 features and custom hooks that reduced code duplication by 60%
Collaborated on database schema design and API architecture, resulting in 30% faster query response times and efficient handling of thousands of daily essay submissions

Skills:

JavaScript,

React,

TypeScript,

HTML,

CSS,

Styled Components,

CRA,

ES6,

Ant Design

Contract Developer

Company:

Tails.com

Dates:

Oct 2018Jan 2019

Duration:

4 mos

Location:

London, United Kingdom

Tails.com is a startup that provides health conscious pet food. Collaborated with Tails.com's marketing team as dedicated QA engineer, developing and executing A/B testing strategies to enhance user experience across their personalized pet food subscription service.

Worked with the marketing team to implement A/B testing in the platform.
Helped with the setup of various analytics tools to track user behavior and improve the platform increasing user conversion rates and reducing user dropoff rates in the signup flow and landing pages.

Skills:

JavaScript,

A/B Testing,

HTML,

CSS,

jQuery,

A/B testing

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Code instructor

Company:

ESCEN - Ecole Supérieure de Commerce et d'Economie Numérique

Dates:

Sep 2018Sep 2018

Duration:

1 mo

Location:

London, United Kingdom

ESCEN is a school for digital business and economics. Designed and delivered practical frontend development workshop for business students, using interactive demonstrations to teach Bootstrap/HTML5 fundamentals while providing hands-on technical mentorship through project completion.

Developed and delivered 2-day intensive Bootstrap/HTML5 curriculum for digital business students, using JSFiddle for interactive demonstrations and hands-on learning
Mentored students through final project development, providing technical guidance on frontend technologies (HTML5, Bootstrap, CSS, JavaScript) and best practices for web development

Skills:

HTML5,

Bootstrap,

CSS,

JSFiddle

Code Workshop Instructor

Company:

National Film and Television School

Dates:

Jul 2018Jul 2018

Duration:

1 mo

Location:

London, United Kingdom

National Film and Television School is an acclaimed school for film and television. Designed and delivered practical web development curriculum for digital media students, combining technical instruction with hands-on project mentorship to enable successful delivery of frontend projects using Bootstrap and HTML5.

Designed and taught practical web development workshop series, guiding business students from basic HTML/CSS concepts to completing functional web projects
Provided hands-on technical mentorship through JSFiddle demonstrations and real-time project support, enabling non-technical students to successfully deliver frontend projects

Skills:

HTML5,

Bootstrap,

CSS,

JSFiddle

Junior Full Stack Developer

Company:

Honest Brew

Dates:

Aug 2017Oct 2018

Duration:

1 yr 3 mos

Location:

London, United Kingdom

Honest Brew is an online beer subscription service and shop. Started software engineering career at HonestBrew's rapidly growing e-commerce platform (28% monthly growth), maintaining and optimizing their WordPress/WooCommerce infrastructure while shipping 10,000+ monthly craft beer orders.

Maintained and optimized WooCommerce platform supporting 28% month-over-month growth and 10,000+ monthly beer shipments, ensuring zero downtime during peak ordering periods through proactive plugin management and performance monitoring
Collaborated with senior developers to enhance customer experience features, resulting in a 15% increase in average order value and successful deployment of age verification, subscription management, and inventory tracking systems
Reduced CSS bundle size by 40% and decreased page load time by 2.5s by consolidating multiple CSS files into a streamlined SASS architecture with Gulp automation
Implemented Git version control system, resulting in 30% fewer deployment errors and enabling 2x faster developer onboarding

Skills:

JavaScript,

PHP,

HTML,

CSS,

Wordpress,

Woocommerce,

Sass,

Git

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Tech I use daily:

React

Javascript

Next.js

Jest

Tailwind CSS

TypeScript

Vercel

Payload CMS

Stripe

MongoDB

MongoDB Atlas

Mongoose

Express

Node

Firebase

Git

GCP

GitHub

PostgreSQL

Xata

CSS

Github CI/CD

HTML5

ES6

ESLint

Prettier

Tech I use occasionally:

CRA

A/B Testing

Styled Components

AWS

React Router

Nest.js

React Native

Contentful

Python

Django

FastAPI

Cyber Security

Web3

Blockchain

Ethereum contract writing

Solidity

Styled Components

A/B Testing

jQuery

Monetate

swiper.js

Sass

A11y

WCAG 2.1

Bootstrap

Java

Spring Boot

Ant Design

Tan Stack Query

jQuery

Deck.gl

Chart.js

Woocommerce

Wordpress

Qualifications & Certifications:

Bachelors Degree

Udemy Academy: React Front To Back

Javascript Algorithms and Data Structures

General Assembly Web Development Immersive

Something you might not know:

In a previous life I was a frontman in a band. I still write and record music.

I am a keen cook and love to try new recipes.