Christopher Hagar

5.0

(4 reviews)

US$25.00

For every 15 mins

Sessions/Jobs

First 15 mins free for your first session

ABOUT ME

Software Engineer, Architect, and Mentor

Accomplished technical leader and experienced software architect and engineer with a wide breadth of experience and deep technical skill. Projects I have led have included a complete company spin-off; a global SEM platform used to manage $200+ million a year in spending; and critical, sensitive, or public systems for Google, Expedia, eBay, major hospitals, etc.

Wealth of expertise in solving business problems efficiently, rapidly building high-reliability products and systems, solving complex problems in data architecture, software architecture, systems integration, regulatory compliance and internal controls, security, higher-level mathematics and computer science, building software teams, project management, customer/client relations and support, IT management, data analytics, reporting and business intelligence, UI and product design, etc.

Able to handle all aspects of a project individually, or strongly contribute and lead a team or organization.

Bachelor of Science (B.S.) in Mathematics, Hobart College. Including coursework equivalent to additional majors in Computer Science and Political Science.

English

Eastern Time (US & Canada) (-04:00)

Joined October 2019

EXPERTISE

Ruby on Rails

15 years experience

I have extensive and in-depth experience with Ruby on Rails, including numerous professional projects, customizing and rewriting ActiveRe...

I have extensive and in-depth experience with Ruby on Rails, including numerous professional projects, customizing and rewriting ActiveRecord internals, use in statistics with R, interaction with databases including with SQL Server, core Ruby, etc.

Rails 4 Active record Rails API Ruby on Rails Ruby Rails 5Ruby on Rails 4

Database

20 years experience

Extensive experience from the theoretical (relational algebra, big-O complexity) to the practical (data architecture, reporting and analy...

Extensive experience from the theoretical (relational algebra, big-O complexity) to the practical (data architecture, reporting and analytics, performance optimization, solutions architecture). I have experience with PostgreSQL, MySQL, Microsoft SQL Server, SQLite, Teradata, Netezza, NoSQL databases, etc.

SQL Microsoft SQL Server MySQL

SQL Microsoft SQL Server MySQL PostgreSQL

20 years experience

8 years experience

2 years experience

3 years experience

20 years experience

REVIEWS FROM CLIENTS

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EMPLOYMENTS

Consultant

Independent Consulting

2019-08-01-Present

• Software development and project leadership • Compliance, risk management, and security • Data science, analytics, and business intelli...

• Software development and project leadership • Compliance, risk management, and security • Data science, analytics, and business intelligence • Startup/executive consulting • Teaching, training, and mentoring

Ruby

SQL

Ruby on Rails

Ruby

SQL

Ruby on Rails

PostgreSQL

Heroku

JavaScript

Svelte

Principal Software Engineer and Manager

Dragon Innovation

2018-01-01-2019-08-01

• Hired and built the software team after company acquisition and departure of leadership and senior staff. • Led recruiting, interviewin...

• Hired and built the software team after company acquisition and departure of leadership and senior staff. • Led recruiting, interviewing, hiring, training, reviews, etc. Also managed a team of overseas contractors. • Lead engineer and architect. Release manager. Rails, Vue.js, Postgres, Heroku. Multiple applications. • Implemented new agile development processes, led sprint meetings, mentored developers, etc.

Ruby on Rails

PostgreSQL

Heroku

Ruby on Rails

PostgreSQL

Heroku

Vue.js

CTO

ReInforced Care

2015-07-01-2018-01-01

• Led the transition of all software and IT platforms and operations from a former parent company to a new data center, office, and call-...

• Led the transition of all software and IT platforms and operations from a former parent company to a new data center, office, and call-center facility. Sourced and selected all software and IT vendors. • Led software engineering, architecture, operations, security, compliance, and support for all internal and customer-facing applications, data, and IT systems. • Performed hands-on development on a variety of new and legacy systems, with technologies including SQL Server, Ruby/Rails, Python, and C\#/ASP.NET. • Led extensive and detailed security and risk assessments and remediation with leading hospitals. Developed compliance policies and internal controls for PHI, call-center operations, IT operations, network, application, and physical security, etc. • Reported directly to the CEO and provided strategic direction, analysis, and guidance.

Python

Ruby on Rails

Python

Ruby on Rails

Microsoft SQL Server