Dan Mello, Developer in Broomfield, CO, United States
Dan is available for hire
Hire Dan

Dan Mello

Verified Expert  in Engineering

Back-end Engineer and Developer

Broomfield, CO, United States

Toptal member since January 10, 2025

Expertise
Back-end DevelopersRubyRuby on RailsMacOSPostgreSQLGitDatabaseVisual Studio DevelopmentAmazon S3
Bio

Dan is a senior back-end engineer with over eight years of experience building robust solutions in the startup industry. His expertise lies in Ruby on Rails, adept database management, and API design, as well as seamless implementation and integration of 3rd-party tools. Dan’s proficiency extends to event-driven architecture and successfully transitioning existing applications into microservices, showcasing a versatile skill set honed through diverse industry experience.

Portfolio

Sondermind
Ruby on Rails (RoR), Ruby, PostgreSQL, Amazon S3 (AWS S3), Git, Data Structures...

Experience

  • PostgreSQL - 8 years
  • Database Management - 8 years
  • API Integration - 8 years
  • Ruby - 8 years
  • RESTful Web Services - 8 years
  • Git - 8 years
  • Schema Migration - 8 years
  • Ruby on Rails (RoR) - 8 years

Availability

Part-time

Preferred Environment

MacOS, Visual Studio Code (VS Code), Ruby, Ruby on Rails (RoR)

The most amazing...

...thing I've been a part of is the growth of a small startup to unicorn status with a market valuation of over $1 billion.

Work Experience

Software Engineer IV

2020 - 2024
Sondermind
  • Separated critical functionality from a monolith architecture to a dedicated microservice.
  • Headed the design and implementation of multiple projects critical to the company's success.
  • Implemented and maintained 3rd-party integrations crucial for continued telehealth functionality and satisfaction.
  • Optimized slow-performing API endpoints and PostgreSQL database queries and reduced response times by as much as 10 times.
  • Collaborated with product managers and stakeholders to translate requirements into robust software solutions.
Technologies: Ruby on Rails (RoR), Ruby, PostgreSQL, Amazon S3 (AWS S3), Git, Data Structures, APIs, Back-end, API Integration

Experience

Every Deck Helper

A Ruby on Rails/React application that allows users to create and manage deck lists for the trading card game Magic: The Gathering. Users can also share their deck lists with other members to garner feedback and suggestions for their favorite decks.

Skills

Libraries/APIs

PubNub

Tools

Git

Languages

Ruby

Frameworks

Ruby on Rails (RoR)

Platforms

MacOS, Visual Studio Code (VS Code)

Storage

PostgreSQL, Database Management, Amazon S3 (AWS S3)

Other

API Integration, APIs, Back-end, RESTful Web Services, Schema Migration, Data Structures

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring