Lead Full-Stack Engineer

EUforYa Jan 2026 - Present

Building a human-in-the-loop automation platform that combines locally-running and cloud AI.

  • Built the web application from the ground up as a Ruby on Rails service
  • Integrated local and cloud AI services to power a human-in-the-loop automation workflow
  • Built the admin panel supporting distinct admin, reviewer, and moderator roles
Ruby on Rails AI Integration Automation

Co-Founder & Lead Engineer

Cordial Credit May 2022 - Present

Built a complete financial service web application from the ground up.

  • Developed the full-stack application end to end: React frontend and Ruby on Rails backend
  • Implemented a custom Stripe Elements payment integration (the more advanced workflow)
  • Built a separate admin app to harden security, rather than exposing admin features in the user-facing app
  • Co-designed the application architecture and user interface
React Ruby on Rails Stripe API

Full-Stack Developer

Candor (Teal Organization) Jun 2023 - Aug 2024 (1 year)

Worked in a self-organizing Teal organization, contributing to product strategy and architecture.

  • Co-created features for CandorApp in a fully autonomous team environment
  • Participated in architecture discussions and influenced technical direction
  • Contributed to strategic product evolution decisions
Ruby on Rails React PostgreSQL

Co-Founder & Chief Technology Officer

Communicaite Jan 2021 - Jan 2023 (2 years)

Persuaide

AI service helping improve communication quality.

  • Built microservice architecture with React frontend, Rails backend (PostgreSQL), and Python AI service
  • Maintained, orchestrated, and deployed the AI microservices
  • Led the technical team as CTO while staying hands-on across the stack

Pursuance

Internal service for team alignment and AI pre-training progress tracking.

  • Identified team need and conceptualized solution
  • Fully built product in Rails using available UI design

Resonaid

LinkedIn outreach automation tool.

  • Built React frontend, Chrome extension, and Rails backend
React Ruby on Rails Python AI/ML Microservices Browser extensions

Full-Stack Developer

Analytics Fire (acquired by R-Zero) Aug 2016 - Feb 2021 (4 years 7 months)

Worked on solar panel company software with complex tax calculations and savings algorithms.

  • Maintained and enhanced software for solar panel agents with usage calculations and tax incentives
  • Built testing framework improving developer-QA collaboration
  • Led internal talks on programming patterns and software quality
  • Introduced test automation tools company-wide
Ruby on Rails React Agile Test Automation

Web Developer

XING Apr 2011 - Sep 2015 (4 years 6 months)

Worked on Germany's leading professional social network serving over 50 million users.

Company Profiles

  • Developed messaging system and external API integrations
  • Re-implemented admin panel improving usability and reducing complexity
  • Refactored external API integration mechanisms, saving development time
  • Maintained REST API and AMQP communication between services

XING Talent Manager

  • Built Rails backend and Pinocchio frontend (BackboneJS framework)
  • Worked on search-heavy features using ElasticSearch
Ruby on Rails ElasticSearch REST API AMQP 50M+ Users

Freelance Full Stack Developer & Consultant

Various Clients Mar 2009 - Present

Selected highlights from freelance work:

  • Led REST API implementation on Node.js/Vercel for US crypto-backed loans platform
  • Built mobile-first scientific social website
  • Developed employee benefits management app with Bank API integration and AWS storage
  • Reorganized and prepared complete USDA nutrition database for web application
  • Created comprehensive Intranet solution (projects, groups, news, calendar, wiki, forum) in Rails with MongoDB
  • Conducted security audits for Ruby on Rails applications
Ruby on Rails React Node.js Python PostgreSQL MongoDB AWS Security Audits

Web Developer

Netguru Jun 2006 - Dec 2008 (2 years 7 months)
  • Implemented Foursquare-like application for rating everything
  • Developed feature-rich travel website
  • Created open source library increasing development productivity (Aggregator and Aggregatable behaviors for CakePHP)
PHP JavaScript CakePHP Open Source

Open Source projects

AwesomeState

A better, more convenient, easier to use Redux State

Tech: React, JavaScript, TypeScript

2023

OpenSecrets

Storing versioned environment variables without shooting yourself in the foot

Tech: Python, Google Cloud

2021

Integrative

Connecting ActiveModel to data sources outside of the database

Tech: Ruby, Ruby on Rails

2016

RelationalMapper

Using relational databases with ease in Clojure

Tech: Clojure

2016