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Simon Willems Email & Phone Number

Senior Software Engineer
Location: Aurora, Colorado, United States 6 work roles 1 school
1 work email found @trustsitka.com LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 86%

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Role
Senior Software Engineer
Location
Aurora, Colorado, United States

Who is Simon Willems? Overview

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Simon Willems is listed as Senior Software Engineer based in Aurora, Colorado, United States. AeroLeads shows a work email signal at trustsitka.com and a matched LinkedIn profile for Simon Willems.

Simon Willems previously worked as Senior Frontend Developer at Fis and Senior Software Engineer at Sitka, Inc.. Simon Willems holds Bachelor'S Degree, Computer Science from The University Of Texas At San Antonio.

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Profile bio

About Simon Willems

Senior Angular/React Developer with over ten years experience working on large scale enterprise applications and experience in graphic design, web development, digital marketing, and accessibility. I focus on clean design, simple user interfaces, and efficient backend programming to deliver the best experiences to the widest possible audiences with exceptional attention to detail. Adhering to a strong personal philosophy in web standards, progressive enhancement, documentation of patterns, testing, and platform flexibility, I am always eager to embrace new challenges while respecting the best practices of my discipline. I have deep knowledge of Javascript, Typescript, SCSS/SASS (Grid, Flex, BEM), Angular, AngularJs, Grunt/Gulp, Nx, REST, SSE, Websockets, GraphQL, ADA, CI pipelines, git, monotrunk development, JEST, Jasmine, Karma, Protractor, and Cypress. Moderate knowledge of Vue.

Listed skills include Responsive Web Design, Javascript, Php, Asp.Net, and 11 others.

6 roles

Simon Willems work experience

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Senior Frontend Developer

Fis

Jacksonville, Fl, Us

• Sole Senior Frontend Specialist within the company; tasked with scaling a Typescript/React set of application with .NET backend and AWS infrastructure for FIS Impact Labs, an incubator company within FIS• Rewrote large portions of the applications, dramatically reducing SLOC and improving maintainability and stability• Improved DevOps scripting and automation to ensure smoother and more reliable releases• Enhanced code quality by implementing pre-merge hooks for testing, accessibility, and circular dependency checks• Introduced a shared component library, internally codenamed “Spruce,” that published common components written inStorybook to Chromatic, a hosting solution, when a PR was opened via automation hook allowing designers and productmanagers to review the specs of the actual deliverable as early as possible• GoCart was acquired out of FIS by Skipify, a startup competitor, with a portion of GoCart staff offered onboarding• Served to successfully help shift all infrastructure of the existing GoCart products seamlessly into Skipify infrastructure ona tight deadline; continued to work on product strategy, roadmap, and standardized engineering principles thereafter

Dec 2021 - Feb 2023

Senior Software Engineer

San Francisco, Us

• Fullstack engineer primarily focused on a Typescript/React frontend for a video telehealth startup (Series A)• Wrote AudioWorklet processor for realtime audio analysis to ensure proper mic levels for recordings and message the user on clipping, low sound floor, and no audio channel which resulted in a reduction of the total support volume by one fifth• Instrumented many product quality of life improvements such as form UX with masked input guides, surfacing SLA response timers to providers, allowing granular control over patient comms via a dashboard, and creating text only consults for video-shy providers• Introduced e2e testing via a Cypress GitHub Action to improve release quality• Worked closely with leadership to develop Zone Team concept with norms and ceremonies

Nov 2020 - Nov 2021

Frontend Manager

Promontech Llc

Frontend Manager (2019), Technical Lead (2017), Software Engineer• First frontend engineer hired to support development of a Loan Origination System utilizing the Angular framework written entirely in Typescript eventually consisting of six discrete applications for public consumers and workforce users• Made foundational contributions including a Google-style monotrunk repository with colocated code using the Nx framework which allowed for:o Integration testing of shared libraries using generated dependency graphs for downstream consumerso Architect schematics for rapid prototyping using our custom common UI components and service librarieso Deployment of a Storybook living style guide for UX team to test design changes in appo Cypress e2e testing implementation for QA team with CI hooks, Jasmine unit testing for FE Engineerso Ability to deploy the same codebase to multiple build targets such as Electron (desktop), Ionic (mobile), and web o Highly optimized bundles utilizing tree shaking, lazy loading, and other such techniques• Created implementation standards for GraphQL, SSE, Websockets, and SASS tooling for UI teams• Developed numerous CI pipeline integrations for linting, security vulnerability scanning, and accessibility reporting• Assisted in development of organizational paradigms such as Spotify-style vertical team structure, Shape Up principles,various Agile ceremonies alongside Scrum Masters, release strategies, and career tracks for engineers• Conducted employee reviews for direct reports, budgeted continuing education for conference attendance

Jan 2016 - Jun 2020

Senior Web Developer

Englewood, Colorado, Us

• Managed a small team of web developers and designers creating fully custom websites for high-end clientele in the medical sector, primarily concentrated in aesthetic and plastic surgery• Created a proprietary boilerplate of technologies, customized for both the frontend and backend, running on a highly modified Wordpress core along with Javacript MVC frameworks like AngularJs• Developed plugins and REST APIs for platform-independent web applications, such as patient galleries and automated practice review tools, and developed a PhoneGap solution to port apps to phone platforms (iOS, Android)• Implemented development improvements including: Responsive Web Design, Schema.org markup, Open Graph protocol, Open Search integration, Adaptive Image solution, polyfill fallbacks, SVG solutions for high pixel-density displays, and various page load optimizations for mobile (minification, gzip, HTTP request reduction techniques, data URIs, etc.)• Worked closely with Marketing to assist in various campaigns, brand identity explorations, and SEO strategies

Oct 2012 - Nov 2015

Web Developer

College Station, Tx, Us

Web Developer for the College of Veterinary Medicine & Biomedical Sciences as well as affiliate programs and organizations including: Feline Medical Symposium, Legends Premier Stallion Season Auction, Interdisciplinary Faculty of Toxicology, Diagnostic Imaging & Cancer Treatment Center, Vet Emergency Team, Schubot Exotic Bird Health Center, Gastrointestinal Laboratory, and Comparative Gastroenterology Society• Using the Umbraco .NET framework, customized a Content Management System (CMS) for the main college website consisting of 2,000+ pages, 100+ users, and 300,000+ page views from unique visitors each month. Used MVC, ASP, C#, VB, LINQ, & SQL for back-end development and XML with XSLT Macros for front-end development as security against SQL injections and other common invasion techniques• Designed and deployed sibling sites related to the college including Feline Medical Symposium, Legends Premier Stallion Season Auction, Interdisciplinary Faculty of Toxicology, Diagnostic Imaging & Cancer Treatment Center, Vet Emergency Team, Schubot Exotic Bird Health Center, Gastrointestinal Laboratory, and Comparative Gastroenterology Society• Achieved full compliance with Section 508 guidelines of the ADA for accessibility, validation, and usability• Developed HTML5/CSS3 templates for cross-platform video delivery to mobile and desktop devices• Created dynamic RSS and XML feeds for news and events to serve to users as well as integrate with aggregators• Dramatically improved Search Engine Optimization (SEO) moving many high value keywords to page one rank• Developed mass email campaigns to referral veterinarians all over the nation with full analytics for campaign tracking

Feb 2010 - Jun 2012

Team Lead, Web Developer

Naked Lime

Served as lead flash and scripting developer on a team of a dozen developers overseeing the management and deployment of all flash/scripting projects for over 8,000 template-based automotive dealership websites• Sole developer in charge of the largest enterprise level account encompassing hundreds of sites all over the nation• Responsible for all flash galleries, slideshows, animation libraries, and enterprise theme builds• Taught ActionScript 3.0 and JavaScript best practices courses internally to developers with follow-up testing of participants• Due to recruiting background, was utilized as a hiring consultant for interviews. Involved in the hiring of five developers and the personal training of three through their probationary periods

Aug 2008 - Feb 2010
1 education record

Simon Willems education

  • The University Of Texas At San Antonio
    The University Of Texas At San Antonio
    Computer Science
FAQ

Frequently asked questions about Simon Willems

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

What is Simon Willems's role at their current company?

Simon Willems is listed as Senior Software Engineer.

What is Simon Willems's email address?

AeroLeads has found 1 work email signal at @trustsitka.com for Simon Willems.

Where is Simon Willems based?

Simon Willems is based in Aurora, Colorado, United States.

What companies has Simon Willems worked for?

Simon Willems has worked for Fis, Sitka, Inc., Promontech Llc, Omni Medical Marketing, and Texas A&M University.

How can I contact Simon Willems?

You can use AeroLeads to view verified contact signals for Simon Willems, including work email, phone, and LinkedIn data when available.

What schools did Simon Willems attend?

Simon Willems holds Bachelor'S Degree, Computer Science from The University Of Texas At San Antonio.

What skills is Simon Willems known for?

Simon Willems is listed with skills including Responsive Web Design, Javascript, Php, Asp.Net, Graphic Design, Css, Restful Webservices, and Html5.

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