Francisco Hernandez
Remote | Hybrid | On-Site (Los Angeles, CA)

Product Engineer [email protected]
English & Spanish communicator
US Citizen


Over 20 years of experience using Ruby on Rails, building applications for the web. As a polyglot developer I've also worked on DotNet/C# and Go projects backends with Next.js frontends.

Experienced with all facets of development end-to-end from concept to production deployment, Ops, DevOps and maintenance. I like working closely with customers to define and implement product.

Looking for a role in which I can use my experience and knowledge on a skillfully diverse, trusting team be it remote or hybrid/on-site and have fun while doing it.

Remote available Time Zones: Full PST and CDT (Americas) For Hybrid/On-Site relocation can be considered.

DevOps, infra, monitoring and systems experience on several different cloud infrastructure providers. I can setup your dockerfiles, ci/cd pipelines, and cloud infrastructure. Infra cost benefit analysis.

Deep interest in working with anything IOT, Embedded Systems, and Rust. Experience with Raspberry Pi and ESP32 with Rust and MicroPython.


Product Engineering Team Lead @ Prestti

September 2021 – Current // Remote / Hybrid - LATAM (Los Angeles USA, Guadalajara Mexico, Medellin Colombia)

  • Lead the team to build from Concept to Product definition to development to production deployment of mission critical software used as the operating system of the lending business.
  • At this startup I lead a team of 6 developers on this project, mentored and managed a team of mixed experienced engineers to build a modern cloud native apps using Ruby on Rails web app and GraphQL API that powered the React and Next.js apps.
  • Loan Underwriting and ERP/CRM system with multiple API integrations. Automated Metro2 Format credit reporting to various credit agencies.
  • Tech: Full stack Ruby on Rails, Tailwind, Next.JS, GraphQL, Go. DevOps: Kamal, GitHub Actions, AWS, Hetzner APIs: Docusign, Plaid, Metro2 Reporting, Experian API.

Senior Full Stack Engineer @ J.D. Power

December 2020 - August 2021 // Remote / Hybrid - USA

  • J.D. Power acquired ALG from TrueCar.com for it's best-in-class residual value forecasting and data analytics software platforms. Therefore this is a continuation of role at J.D. Power everything automotive data provider.
  • Tech: Full stack Ruby on Rails, C#/DotNet, GraphQL. DevOps: GitLab DevOps and IDP, AWS. APIs: Many private APIs.

Senior Full Stack Engineer @ TrueCar.com

August 2016 - December 2020 // Santa Monica, CA

  • Lead the migration of existing systems to use modern technologies to achieve a more efficient business processes. Migration legacy self-managed on-prem systems to AWS to leverage the cloud architecture and services provided by AWS.
  • Worked closely with customers to understand their needs and provide solutions to their problems via self service software we developed for internal use.
  • Collaborated with data scientists and engineering to implement machine learning models based on the ETL data pipelines we built to clean, normalize and ingest data from many different data sources across the entire automotive industry.
  • Lead the implementation for a GraphQL API using DotNet/C# to bring in all data from the various services we had to a single API that could be exposed to the end user of our data services APIs.
  • Tech: Full stack Ruby on Rails, C#/DotNet, GraphQL. DevOps: GitLab DevOps and IDP, AWS. APIs: Many private APIs.

Co-Founder (Product Development) @ Son of a Pixel

March 2014 - January 2017 // Los Angeles, CA

  • Created a hybrid ERP, CMS, Marketing and POS system to manage daily operations at multiple print manufacturing facilities. Built iOS, Android and web apps for Son of a Pixel to offer uniquely customizable print products.
  • Built web admin and APIs to enable Print-On-Demand functionality for a variety of products and services we offered.
  • Tech: Full stack Ruby on Rails, JS/Angular, Mobile dev (with Ionic). DevOps: Capistrano, AWS. APIs: Braintree Payments.

Head of Engineering @ InAuth (Subsidiary of American Express)

July 2012 - March 2014 // Santa Monica, CA

  • Lead a team of 5 developers to build out an Anti-Fraud and Risk Detection engine focused around Browser and Mobile clients. Handled all facets of development from cloud services, DevOps, architecture, implementation and deployments over many different platforms both in-house as a SaaS product and external deployments on customer provided JVM based infrastructures.
  • This system was designed to run either in the cloud or on-premises due to the nature of the data we collected and processed which included PII and other sensitive data.
  • Tech: Full stack Ruby on Rails, Mobile dev (Android Java and iOS ObjectiveC). DevOps: Capistrano, AWS. APIs: Many private APIs.

Full Stack Engineer @ JibJab Media and StoryBots

Jun 2010 - Jul 2012 // Venice, CA

  • Worked on a wide variety of areas at JibJab Media, led initiatives for handling Payment processing operations, website and mobile app Analytics and Search across the board. Also managed transition to modern HTML5/CSS3 practices across several properties.
  • Was part of the StoryBots app for kids with interactive video and learning. Our development teams first launch of the mobile product on iOS.
  • Tech: Full stack Ruby on Rails.

Full Stack Engineer @ Flektor / MySpace.com

January 2007 - January 2009 // Culver City, CA

  • Employee #3 at startup Flektor that was purchased by MySpace. We created an online video editing and sharing platform very advanced for it's time, all with Flash and Ruby on the backend. I was the sole web developer at the company and was responsible for integrating backend service API's and front-end development working intensively with product owners and designers to get the product to market and integration into the MySpace ecosystem. We created the worlds first live debates platform with live Q&A for the 2008 US Presidential election in conjunction with MySpace and Fox Interactive Media.
  • Tech: Full stack Ruby on Rails, JS/JQuery/Flash/Air APIs: MySpace OpenSocial, Paypal Payments, Authorize.NET

Full Stack Engineer @ Integralnet

January 2005 - December 2006 // Irvine, CA

  • Built a tools for content management, billing systems, API's for third-party integration, member services websites, general purpose analytic software to analyze sales of products.
  • Unique system built to track digital video assets including actors, documentations, credentials and their usage across other properties and services.
  • Tech: Full stack Ruby on Rails, JS/JQuery. DevOps: Linux sys admin. APIs: ACH Payment processors.

Independent Contractor @ f16z systems

January 2004 - January 2005 // Los Angeles, CA

  • Quiz Website - Java, Hibernate, Spring, XWork, WebWork, JSP, Servlets, MySQL
  • Real Estate Sale Sign Production Management System - PHP3
  • Graphic Design Management and Proofing System - PHP3

Full Stack Engineer @ Chromatic Printing

December 1999 - January 2004 // Los Angeles, CA

  • Wrote a large scale system to handle all things relating to running a modern web-enabled print shop. From point of sale systems, e-commerce, accounts receivable, inventory tracking, run management, product lifecycle reporting, billing, payroll. ERP and CRM.
  • Tech: PHP3 / MySQL. DevOps: Linux sys admin. APIs: ACH Payment processors.


Programming Languages

  • Ruby
  • DotNet/C#
  • JavaScript
  • Go
  • SQL
  • HTML
  • CSS
  • Rust
  • MicroPython

Libraries & Frameworks

  • Ruby on Rails
  • Tailwind
  • GraphQL
  • React
  • Next.js


  • Linux
  • Kamal
  • Docker
  • Github Actions
  • GitLab CI/CD
  • Bare Metal
  • Hetzner
  • AWS

Tools | Services | Database

  • GraphQL
  • Restful
  • Git
  • Docker
  • CI / CD
  • GitHub
  • GitLab
  • Hetzner
  • AWS
  • Kamal
  • PostgreSQL
  • SQLite
  • Redis
  • MQTT
  • Kafka
  • IOT
  • ESP32


Pioneer Academy of Electronics @ Maxine Waters Employment Preparation Center

June 1996 - June 1998 // Watts, CA

Analog and Digital Eletronics courses with along with computer programming and robotics.

Attended this special academy designed to help the underserved community in the midst of recovery from the damage sustained during the Los Angeles Riots years prior. This School was funded by various donors such as Pioneer Electronics, Maxine Waters and Magic Johnson.

* These classes and after-school program were taken while attending high-school in 11th/12th grades.

3Com and Cisco Network Engineering Program @ Cerritos Community College

June 1998 - December 2000 // Cerritos, CA

Attended the program that 3Com and Cisco partnered with Cerritos Community College to offer students an opportunity to learn about computer networking and a new service called The Internet.

Learned how to setup networking infrastructure at local colleges and businesses. Lots of hands of training and use of Cisco iOS and 3Com network stacks.

Volunteer & Professional Development

Volunteer & Organizer @ Downtown LA Youth and Culture Center

January 2010 - January 2012 // Los Angeles, CA

  • Played an instrumental role in bringing the complete non-profit 501(c)(3) organization online with a website, social media presence, and online donation system.
  • I offered my services pro-bono to the MacArthur Foundation to manage tutor scheduling, class registrations for students wishing to enroll in the center at no cost to them.