Andrew – Python, React, Typescript, experts in Lemon.io

Andrew

From United States (UTC-7)flag

Full-stack Web Developer|Strong senior

Andrew – Python, React, Typescript

Andrew is a Senior Full-Stack Engineer with 15+ years of commercial experience across startups and enterprise, combining strong Python and React depth with applied AI integration. He's built products from scratch — IoT robotics platforms, AI-powered SaaS tools, geospatial social apps — and scaled them across infrastructure, user growth, and team capability. What makes him stand out is genuine product ownership: he consistently bypasses stakeholder noise to build for actual end-users, drives architectural decisions independently, and communicates trade-offs with precision.

15 years of commercial experience in
AI
Consumer services
Environmental services
Fintech
Recruiting
Enterprise software
SaaS
Main technologies
Python
10 years
React
10 years
Typescript
8 years
AWS
7 years
GCP
7 years
Additional skills
AI agent development
Node.js
WebRTC
Vue.js
Cloudflare
BLE
Spring Boot
MySQL
Hubspot
Java
OpenAI
Docker
Swift
DigitalOcean
Tensorflow
Splunk
Cassandra
Kubernetes
Jenkins
Angular
React Native
Direct hire
Possible
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Experience Highlights

Lead Engineer
Dec 2025 - Apr 20263 months
Project Overview

Carbon sequestration startup developing a fleet of autonomous terraforming robots that inject wood underground to capture carbon and generate carbon credits. The platform covers real-time robot control across multi-acre field deployments and a site monitoring system for managing land elevation progress at scale.

Responsibilities:
  • Led a cross-functional software and mechanical engineering team to design, source, and build a fleet of autonomous terraforming robots deployed across 2-acre work sites.
  • Built an iOS control application communicating with robots via BLE and Modbus protocols, achieving sub-300ms latency across the full deployment area.
  • Developed a real-time monitoring platform for carbon injection sites, giving site managers visibility into land elevation progress and tools to make testable, data-driven decisions.
  • Architected backend infrastructure using NestJS and Cloudflare to support multi-site coordination, observability, and geospatial data rendering via MapBox.
Project Tech stack:
BLE
MapBox
Nest.js
Vue.js
Cloudflare
WebRTC
Founding Engineer
Aug 2024 - May 20259 months
Project Overview

AI-powered reference-checking platform that automates recruiter workflows by delegating reference collection to AI. Candidates respond via SMS, voice, or web — eliminating friction and scaling throughput without adding headcount.

Responsibilities:
  • Scaled the platform from MVP to a full production service, achieving 5× user capacity at 1/3 the original infrastructure cost.
  • Integrated OpenAI to automate reference collection across SMS, voice, and web channels, growing monthly candidate conversion from 15 to 40.
  • Architected the Python/Java backend with Spring Boot and MySQL on AWS, including HubSpot integration for recruiter pipeline automation.
  • Designed the full React frontend with a modular component system, landing page, and brand identity — cutting development time in half.
Project Tech stack:
OpenAI
Python
Java
Spring Boot
React
AWS
MySQL
Hubspot
Founding Engineer
Aug 2022 - May 20252 years 9 months
Project Overview

Social outdoor adventure platform connecting outdoor enthusiasts to activities and adventure partners. Features cooperative geospatial editing, in-app messaging, and ML-driven athlete matching.

Responsibilities:
  • Built the native iOS app in Swift from the ground up to connect outdoor enthusiasts with adventures, ski partners, and local guides.
  • Re-architected the full backend from a Firebase prototype to a scalable DigitalOcean/Docker stack, achieving 12× traffic capacity at the same infrastructure cost.
  • Designed and trained a TensorFlow ML model for automated athlete categorization, contributing to 3× user growth.
  • Integrated MapBox for real-time cooperative geospatial editing and location-aware activity discovery.
Project Tech stack:
Swift
React
Python
DigitalOcean
Docker
MapBox
MySQL
Tensorflow
Firebase
Senior Full-Stack Engineer
Jul 2019 - Jun 20222 years 10 months
Project Overview

Checkout platform engineering at one of the world's largest fintech companies. Scope spanned developer tooling, A/B experimentation infrastructure, and integration work with new products post-acquisition — contributing to measurable uplift in conversion and revenue at scale.

Responsibilities:
  • Built internal logging and debugging tooling to surface bottlenecks across the development cycle, improving transparency around downtime and incident response.
  • Formed and led a team to develop an A/B testing framework for UI variants, delivering a 3% lift in user retention.
  • Led a cross-functional team applying device-, region-, and behavior-based heuristics to checkout flow redesigns, achieving a 30-point conversion increase.
  • Partnered with post-acquisition Honey and Venmo teams to identify and resolve customer friction points, contributing to $30M in incremental revenue.
Project Tech stack:
Node.js
Java
React
Kubernetes
Splunk
Jenkins
Cassandra
Senior Front-End Engineer
Aug 2017 - May 20191 year 9 months
Project Overview

Enterprise WiFi network management application used by IT teams to configure and monitor wireless infrastructure.

Responsibilities:
  • Developed and shipped UI features for the HiveManager network management application, driving a 15% improvement in usability and retention.
  • Introduced Angular and established a cohesive application architecture across the frontend codebase, cutting development time by a third.
  • Chaired stand-ups and transitioned the team to a continuous release cycle, clearing a full year's backlog of outstanding bugs.
Project Tech stack:
Angular
React Native
Jenkins
MySQL

Education

2018
Computer Science
Bachelor's degree

Languages

English
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