Nathaniel Simmons
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Nathaniel Simmons Email & Phone Number

Senior Software Engineer at CoStar Group
Location: Washington, District of Columbia, United States 11 work roles 1 school
1 work email found @costargroup.com LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email

Work email n****@costargroup.com
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Current company
Role
Senior Software Engineer
Location
Washington, District of Columbia, United States
Company size

Who is Nathaniel Simmons? Overview

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Quick answer

Nathaniel Simmons is listed as Senior Software Engineer at CoStar Group, a with 4408 employees, based in Washington, District of Columbia, United States. AeroLeads shows a work email signal at costargroup.com and a matched LinkedIn profile for Nathaniel Simmons.

Nathaniel Simmons previously worked as Software Developer at Costar Group and Senior Software Engineer (Contract) at Epiq Systems. Nathaniel Simmons holds B.S., Philosophy, Computer Science from Portland State University.

Company email context

Email format at CoStar Group

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{first_initial}{last}@costargroup.com
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AeroLeads found 1 current-domain work email signal for Nathaniel Simmons. Compare company email patterns before reaching out.

Profile bio

About Nathaniel Simmons

I’m a software engineer with a passion for creating clean, understandable, and maintainable solutions. I’ve worked on codebases containing varying degrees of technical debt. Analyzing, refactoring, and extending code while reducing debt is something I’m familiar with and good at. That said, I’m happiest when building things from scratch, with the opportunity to build them “correctly” from the start and with the goal of preventing the kind of technical debt that has occupied my thoughts (who am I kidding, nightmares) more times than I’d like.After working with the bloat and needless complexity of ASP.NET Web Forms, I became a fan of MVC architecture for many reasons, including its simplicity, separation of concerns, and reflection of the stateless nature of the web. I then discovered the power and beauty of Ajax to build complex functionality while keeping things lightweight and minimal. This has led me quite naturally to the enthusiastic adoption of client-side MVC frameworks like AngularJS. I’ve also spent time knee deep in T-SQL development which has benefited my web development skills significantly and allowed me to design and develop features from end-to-end, debug more thoroughly, and contribute to projects in a more comprehensive manner.

Listed skills include Microsoft Sql Server, C#, Tfs, Asp.Net, and 31 others.

Current workplace

Nathaniel Simmons's current company

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CoStar Group
Costar Group
Senior Software Engineer
washington, district of columbia, united states
Website
Employees
4408
AeroLeads page
11 roles

Nathaniel Simmons work experience

A career timeline built from the work history available for this profile.

Senior Software Engineer

Current

Washington, District Of Columbia, United States

Sep 2021 - Present

Software Developer

Washington D.C. Metro Area

Jul 2019 - Sep 2021

Senior Software Engineer (Contract)

Portland, Oregon Area

• Designed, developed, and deployed line of business web application used as system of record for tracking and managing metadata related to class action cases.[Technical Stack: AngularJS, MVC 5.2, JavaScript, Web API, Bootstrap, Entity Framework, C#, T-SQL, Git, Scrum]

May 2016 - Aug 2018

Senior Web Developer

Portland, Oregon Area

Jan 2016 - Apr 2016

Senior Web Developer

Mofumobi, Inc

Portland, Oregon Area

• Designed and developed ERP web applications targeting mobile devices.• Developed custom features on an accelerated timeline for mobile work orders app to accommodate customer’s unique workflow needs. Delivering a high quality product on time was integral to securing continued business with this important customer.[Technical Stack: ReactJS, NodeJS, ExpressJS, jQuery, JavaScript, Web API, C#, T-SQL, Gulp, webpack, Bamboo, JIRA, Git, Scrum]

Jan 2016 - Apr 2016

Senior Software Engineer (Contract)

Portland, Oregon Area

• Developed feature for internal application which enabled staff to see versioned historical snapshots of reference information over the lifetime of a class action case.[Technical Stack: AngularJS, MVC 5.2, JavaScript, jQuery, Web API, Bootstrap, Entity Framework, C#, T-SQL, Git]• Designed and developed enhancements to claimant data processing application that increased workflow formalization/streamlining, data visibility/capture, and application-to-domain congruence. The quality of this work was recognized as responsible for securing further sales with the client.[Technical Stack: MVC 4, JavaScript, jQuery, Liquid CSS, Entity Framework, C#, T-SQL, TFS]

Jul 2014 - Sep 2015

Senior Software Engineer (Contract)

Portland, Oregon Area

• Co-architected and developed highly scalable (5 million+ users) web application for claimants to submit a claim and review and approve, or challenge, the findings regarding their claim. — Designed and developed intuitive, responsive, and maintainable asynchronous JavaScript UI for claimants to drill down tabular claim data by selecting one of six filters and clicking a row to define the criteria for the next table's data.• Instrumental in the development of highly scalable (5 million+ users) web application for the collection of data to expedite matching claimants to records in a trillion+ row dataset.— Designed and developed intuitive, responsive, and maintainable asynchronous table-based JavaScript UI for claimants to add and manage their entities (potential 10,000+) and the entities associated to those entities.[Technical Stack: MVC 4, JavaScript, jQuery, Ajax, Blueprint CSS, LINQ to SQL, C#, T-SQL, TFS]

Oct 2012 - Feb 2014

Web Developer (Contract: 11/2011 - 2/2012)

Portland, Oregon Area

• Designed and developed feature for public website enabling users to calculate and compare parking options and prices during a given travel period, reducing parking customer service phone and email volume by 30%.[Technical Stack: ASP.NET Web Forms, JavaScript, jQuery, Ajax, WCF, Entity Framework, C#, T-SQL, TFS]• Initiated and led definition and implementation of Software Configuration Management Process.— Consolidated and migrated source code into TFS. — Restructured Visual Studio solutions to enable automated deployment and parallel development.— Trained web team on version control system and work item tracking.• Initiated and led 6 person web development team’s adoption of Scrum.• Reduced development time required for adding credit card functionality anywhere on public website by developing way to use existing control, designed for specific page, on any page.• Developed ASP.NET webpages for public website allowing users to register for events and contests and make credit card purchases.• Reduced development and configuration time needed for adding or adjusting slideshow functionality to public website by designing and developing reusable control configurable by spreadsheet and markup.• Enabled public website users to easily learn about marine operations by developing webpage with relevant hyperlinks menu system, email list registration form, and informational video.• Identified and eliminated inefficiency by developing SSIS to automate RSVP email validation and reminder email list generation for non-responders.• Refactored intranet employee seating map control to use HR's database backend instead of separately updated SharePoint XML, eliminating inefficiency and inaccurate data.• Designed and developed database backend and intranet webpage enabling authorized employees to select and export complex reports to Excel.

Nov 2011 - Oct 2012

Software Engineer

Portland, Oregon Area

• Contributed to development of web application for creating, managing and printing claim related documents.[Technical Stack: MVC 3, JavaScript, jQuery, LINQ to SQL, C#, T-SQL, TFS]• Developed web application for processing claims by providing visual comparison of outgoing, current and incoming data and a toolset for tagging, validating and importing records.[Technical Stack: ASP.NET Web Forms, ADO.NET, C#, T-SQL, SourceSafe]• Resolved UI bugs in Silverlight web application by modifying XAML.• Co-developed stored procedures that utilized dynamic SQL to refactor permissions and convert connection methods from SQL Authentication to Integrated Security for over 300 databases, reducing security vulnerability.

Mar 2011 - Oct 2011

Data Analyst

Portland, Oregon Area

• Developed .NET application to split file requiring multiple types of print media into files requiring a single type, increasing print throughput by eliminating media switching during printing. Developed ASP.NET website for configuration.• Designed and developed .NET application to export, format, and password protect SQL Server data in Excel workbooks, automating complex and massive reporting for external clients.• Designed and implemented SQL Server stored procedures, functions, indexes and tables to automatically import and validate class action claims data.• Designed and developed SQL function to probabilistically classify entity names as business or individual, reducing manual processing time by over 50%.• Led initial scrub, parse and SQL import of class action case data, some exceeding 1.7 million claimant rows.

Mar 2008 - Mar 2011

Implementation Specialist

Portland, Oregon Area

• Developed SSIS solution, leveraging existing architecture to ETL client data flat files to production database for use by downstream processes.• Used Adobe Illustrator, Photoshop and word processing software to transform mockups into production grade static forms for merging with dynamic content and eventual high volume printing.

Dec 2007 - Mar 2008
Team & coworkers

Colleagues at CoStar Group

Other employees you can reach at costargroup.com. View company contacts for 4408 employees →

1 education record

Nathaniel Simmons education

FAQ

Frequently asked questions about Nathaniel Simmons

Quick answers generated from the profile data available on this page.

What company does Nathaniel Simmons work for?

Nathaniel Simmons works for CoStar Group.

What is Nathaniel Simmons's role at CoStar Group?

Nathaniel Simmons is listed as Senior Software Engineer at CoStar Group.

What is Nathaniel Simmons's email address?

AeroLeads has found 1 work email signal at @costargroup.com for Nathaniel Simmons at CoStar Group.

Where is Nathaniel Simmons based?

Nathaniel Simmons is based in Washington, District of Columbia, United States while working with CoStar Group.

What companies has Nathaniel Simmons worked for?

Nathaniel Simmons has worked for Costar Group, Epiq Systems, Sbi Software, Mofumobi, Inc, and Port Of Portland.

Who are Nathaniel Simmons's colleagues at CoStar Group?

Nathaniel Simmons's colleagues at CoStar Group include Jada Fitzgerald, Daniel Rodriguez, Neal Brown, Sandra Roumi, and Bibi Niraula.

How can I contact Nathaniel Simmons?

You can use AeroLeads to view verified contact signals for Nathaniel Simmons at CoStar Group, including work email, phone, and LinkedIn data when available.

What schools did Nathaniel Simmons attend?

Nathaniel Simmons holds B.S., Philosophy, Computer Science from Portland State University.

What skills is Nathaniel Simmons known for?

Nathaniel Simmons is listed with skills including Microsoft Sql Server, C#, Tfs, Asp.Net, T Sql, Visual Studio, Asp.Net Mvc, and Mvc.

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