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

Zachary

From United States (UTC-5)flag

Full-stack Web Developer

Zachary – Python, React, Typescript

Zachary is a senior full-stack engineer with 6+ years of commercial experience in Python, React, TypeScript, and AWS. He has delivered production systems involving automation, infrastructure, and AI-powered workflows, with notable strengths in system design, database migrations, and client-facing communication. His experience spans both startup and enterprise environments, demonstrating strong ownership, adaptability, and mentoring skills.

6 years of commercial experience in
AI
Analytics
Data analytics
AI software
Enterprise software
Web development
Software development
Main technologies
Python
6 years
React
6 years
Typescript
6 years
AI-assisted coding
2.5 years
AWS
3.5 years
Additional skills
AI agent development
CI/CD
PostgreSQL
Jest
Playwright
Firestore
FastAPI
Next.js
Redis
Claude API
Firebase
Netlify
Stripe API
ETL
Claude Code
Docker
Kubernetes
GitHub Actions
Infrastructure provisioning
SQL
AWS Lambda
Amazon S3
Amazon ECS
XML
AI API integration
AI
CloudWatch
AI system design
AI agent orchestration
Node.js
Java
Golang
Direct hire
Possible
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Experience Highlights

Founder & Full-Stack Engineer
Sep 2025 - Ongoing8 months
Project Overview

It's an all-in-one partner for web building, custom full-stack applications, and responsive web designs.

Responsibilities:
  • Took loosely defined client problems and turned them into clear plans with tradeoffs, edge cases, and a path to production.
  • Owned the full lifecycle from initial scoping through architecture, implementation, launch, and post-launch iteration.
  • Worked across the stack as each problem demanded, covering user experience, backend services and APIs, data models, and operational workflows.
  • Shipped with appropriate testing strategy, rollout planning, and monitoring for each engagement's risk level.
  • Automated test suites, staged deployments via GitHub Actions, and used structured logging for observability.
  • Used Claude Code daily for prototyping, debugging, test generation, and documentation.
  • Partnered directly with clients acting as product stakeholders and connected technical decisions to customer and business impact.
  • Raised the bar through documentation, architecture decision records, and reusable implementation patterns.
Project Tech stack:
React
Typescript
Next.js
Node.js
Python
FastAPI
PostgreSQL
Firestore
CI
CD
Jest
Playwright
AI Engineer
Nov 2024 - Ongoing1 year 6 months
Project Overview

It's a multi-platform AI evaluation contractor performing code review, trajectory assessment, and rubric-based LLM output scoring for leading AI training organizations.

Responsibilities:
  • Evaluated production code and AI-assisted development workflows for correctness, maintainability, and operational readiness.
  • Wrote detailed written assessments connecting technical findings to practical impact.
  • Built evidence-based judgment about where AI-assisted development accelerated work reliably and where human judgment remained essential.
Project Tech stack:
AI agent development
AI system design
AI agent orchestration
AI API integration
AI
Python
React
JavaScript
GitHub Actions
Founder & Lead Engineer
Dec 2023 - Ongoing2 years 5 months
Project Overview

It's a full-stack e-commerce platform for the clothing brand.

Responsibilities:
  • Owned a customer-facing product from concept through launch and ongoing iteration.
  • Built a complete e-commerce platform and continuously improved it based on real usage.
  • Made full-stack architectural decisions across UX design, API contracts, data models, async job processing, and deployment pipeline.
  • Applied appropriate testing strategy and monitoring for a live production system handling real transactions.
  • Built AI-powered automation for inventory and product workflows using the Claude API.
  • Followed the system into production, monitored its behavior, and iterated based on real outcomes and failure modes.
  • Designed, developed, and deployed secure checkout, real-time product data, and automated fulfillment flows.
  • Managed DNS, SEO indexing, CI/CD, and performance optimization for a fast and reliable storefront.
Project Tech stack:
React
Typescript
Node.js
PostgreSQL
Redis
AWS
Jest
Playwright
Claude API
Firebase
Stripe API
Netlify
Software Engineer - Client Solutions
Jul 2021 - Jul 20254 years
Project Overview

It's an enterprise platform supporting automation, integrations, and client operations for 60+ enterprise clients.

Responsibilities:
  • Owned features and product areas from concept through launch and post-launch iteration for 60+ enterprise clients.
  • Collaborated closely with product, operations, and client stakeholders to shape solutions rather than just implement specifications.
  • Worked across the full stack as problems required, covering frontend, backend services, data models, and operational tooling.
  • Built Golang CLI automation that reduced AWS provisioning overhead by 40%.
  • Developed automation pipelines in Python and Java ETL systems that reduced manual processing workload and improved operational data accuracy.
  • Supported and integrated scalable data delivery workflows across client accounts.
  • Diagnosed and resolved complex production issues across multi-system data flows.
  • Established testing patterns, documentation standards, and architectural conventions adopted across the team.
  • Mentored other engineers on architecture, testing, and code quality standards.
Project Tech stack:
React
Typescript
Java
Node.js
PostgreSQL
Golang
AWS
Python
ETL

Languages

English
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