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Dan – AWS, React, Typescript, experts in Lemon.io

Dan

From United States (UTC-4)flag

Full-stack Web Developer|Senior

Dan – AWS, React, Typescript

Dan is a senior full-stack engineer with deep expertise in React, Next.js, Node.js, and Python, complemented by strong experience in AWS and GCP. He has led frontend architecture for complex platforms in synthetic biology and marketing tech, demonstrating a clear product-oriented mindset and strong communication skills. Dan is comfortable with ambiguity, adapts quickly to new technologies, and is effective in both greenfield and product-driven environments. He is recognized for his thoughtful approach, technical breadth, and ability to mentor others.

18 years of commercial experience in
Advertising
Biotech
Business intelligence
Life science
Marketing
Productivity
Sales
Scientific research
AI software
Enterprise software
Simulation software
Web development
Main technologies
AWS
14 years
React
10 years
Typescript
8.5 years
Next.js
5 years
Node.js
14 years
Additional skills
Python
FastAPI
AI
AI agent development
Django
Docker
GraphQL
GCP
Playwright
Django REST
Direct hire
Possible
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Experience Highlights

Staff Software Engineer
Feb 2025 - Dec 202510 months
Project Overview

The marketer’s command center where marketers mobilize agents to build revenue-generating audiences and journeys, and where agents proactively surface recommendations to drive compound growth.

Responsibilities:
  • Developed and optimized interfaces and orchestration layers for agentic AI workflows to streamline audience creation and marketing campaigns.
  • Implemented novel user interfaces and experiences to facilitate decisioning, uplift modeling and personalization features.
  • Enabled onboarding for enterprise customers and partners by delivering extensible data warehouse integrations and activation channels.
Project Tech stack:
React
FastAPI
Ruby on Rails
React Query
WebSocket
Zustand
Typescript
AI agent development
AI chatbot development
Web Components
Web Sockets
LangChain
LangGraph
Senior Software Engineer
May 2019 - Oct 20245 years 5 months
Project Overview

The electronic lab notebook (ELN) is a key component of the computer-aided design (CAD) platform, enabling rich visualization and progress tracking of scientific experiments and protocols.

Responsibilities:
  • Developed a composable ELN solution using modular component architecture.
  • Implemented interactive plotting solutions to enable data visualization.
Project Tech stack:
React
GraphQL
TipTap
Typescript
PostgreSQL
Senior Software Engineer
May 2019 - Oct 20245 years 5 months
Project Overview

A computer-aided design (CAD) platform for biology, aiming to turn genetic engineering into a rigorous engineering discipline by combining advanced lab-based synthetic biology with powerful computational design tools. The tools help genetic designers program living cells using standardized biological parts, models, and simulations, so companies can engineer complex biological systems and genetic circuits more predictably and efficiently.

Responsibilities:
  • Led front-end architecture and development for a flagship web application and CAD platform.
  • Implemented bulk operations and status updates to 10x throughput of synthetic biology tasks.
  • Implemented authentication flows and identity management for internal and external users.
  • Optimized application performance by leveraging front-end build systems and caching strategies.
  • Codified design system and component library to establish consistent brand identity.
  • Implemented user event tracking strategies and analytics to measure KPIs.
Project Tech stack:
React
Next.js
FastAPI
Pydantic
SQLAlchemy
GraphQL
Relay
Python
Principal Software Engineer
Apr 2016 - May 20193 years 1 month
Project Overview

The product allows marketers to drag and drop PDFs into a web-based builder to create an interactive experience. Platform users can have data delivered to their SnapApp accounts and to their marketing automation systems.

Project gallery:
Portfolio example for SnapApp LeadREV by Dan
Responsibilities:
  • Developed and maintained a SaaS platform for authoring interactive marketing content.
  • Enforced technical standards and best practices.
  • Integrated modern front-end tooling in order to streamline deployment and allow for modern programming practices.
  • Orchestrated code compartmentalization and service-oriented architecture.
  • Contributed to CI/CD pipeline infrastructure in order to deploy code faster and more reliably.
  • Supported and mentored junior developers.
Project Tech stack:
React
MongoDB
MongooseODM
Amazon SQS
Redis
AWS Lambda

Languages

English
Advanced

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