mainstay-io > mainstay-io Employee Directory > David Saunders
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David Saunders
Senior Frontend Engineer
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Location: San Jose, California, United StatesApprox. Years of Experience: 14
David Saunders's Current Workplace
Mainstay
Company Size
51-300
Amount Raised
N/A
Mainstay is the premier provider of actionable data and high-quality tools to empower renters with information, expand opportunities for market participants, and to bring clarity and trust to the single-family rental ecosystem. Founded within Opendoor, Mainstay launched as an independent company in 2024.
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Notable Investors
N/A
Rental
Enterprise
Home Services
Rental Property
Property Management
Experience
Senior Frontend Engineer
Mainstay · Full-time
Feb 2025 - Present
2 mos
Principal Frontend Engineer
Tread · Full-time
Mar 2024 - Jan 2025
11 mos
• Appointed as one of the first-ever team leads in the company, assuming key management responsibilities from the CEO and VP of Engineering. Lead a cross-functional team of four frontend and backend engineers, facilitating agile ceremonies, and consistently ensuring that project goals and timelines are met. • Introduced and implemented frontend testing frameworks, building the necessary infrastructure and promoting a culture of quality assurance among frontend engineers. • Developed essential application features that aligned with customer and internal business needs, prioritizing user experience enhancements and playing a key role in securing multiple sales deals. Skills: TypeScript · React.js
Senior Software Engineer
Heap · Full-time
May 2022 - Dec 2023
1 yr 8 mos
• Contributed as a key member of Heap's Product-Led Growth (PLG) team, actively shaping and executing strategies to drive product adoption and user engagement. • Guided Heap's Design System Working Group, leading initiatives to develop and promote Heap's component library to provide a more consistent, user-friendly, and accessible experience for Heap's users. • Architected and developed an email content generation service that provided highly personalized data insights to customers, resulting in 60% open rates and 10% click-through rates. • Championed the development and implementation of strategic paywall initiatives, proactively enforcing Heap's data usage standards and effectively distinguishing between Heap's free and paid plans. Achieved a substantial $200-300k/quarter increase in renewal and new ARR. • Created a custom Slack integration for interfacing with LaunchDarkly that saved Heap $100k/year in LaunchDarkly seat fees and resolved major points of friction for internal support teams. • Successfully refactored core Heap features from Backbone to React, unblocking major product initiatives and significantly improving developer velocity. • Enhanced the developer experience by optimizing CI/CD pipelines, fine-tuning webpack and ESLint configurations, and implementing comprehensive monitoring across the application stack. • Collaborated with product managers, designers, and other engineers to scope projects, refine requirements, and define timelines. • Advocated for on-call improvements and refined alerting and monitoring to reduce page frequency. Skills: Node.js · React.js · TypeScript · Design Systems
Senior React Software Engineer
Tuft & Needle · Full-time
Oct 2021 - May 2022
8 mos
• Core member of Tuft & Needle's Design System team, helping to architect and build a component library utilized by multiple retail websites. • Conducted code reviews to ensure that design system components meet accessibility, brand, and technical standards. • Mentored and led pair programming exercises with mid- and junior-level developers. Skills: CSS · Design Systems · React.js · TypeScript
React Developer
Optum · Full-time
Aug 2020 - Sep 2021
1 yr 2 mos
• Developed, maintained, and refactored customer-facing web applications using React, Redux, TypeScript, Redux Saga, React Testing Library, and Jest. • Built and updated a suite of reusable components in a monorepo environment. • Worked closely with a distributed team of frontend, backend, and QA engineers in an agile scrum setting. • Ensured that applications meet modern web accessibility standards (WCAG 2.0, WAI-ARIA, etc.). • Served as a subject matter expert for internal business stakeholders. • Handled front-end deployments to QA and staging environments. • Conducted code reviews and led technical demos. Skills: Front-end Engineering · React.js · TypeScript
Front End Developer
Prosek Partners · Full-time
Jan 2019 - Aug 2020
1 yr 8 mos
• First development hire for Prosek Partners, a leading financial public relations and communications firm. • Responsible for defining the company's technical stack and development processes and procedures. • Spearheaded the creation and configuration of an internal, reusable component library. • Developed proprietary web applications using React and a custom-built internal API. • Performed full-stack WordPress development, including creating custom themes and plugins. • Created custom, reusable component libraries for websites and web applications. • Identified tools to assist in collaboration between departments and to improve the efficiency of Prosek's design, development, QA, and launch efforts. • Managed the development phase of projects, regularly communicating with clients and ensuring that projects adhere to scope, budget, and timeline requirements. • Lead search engine optimization efforts within the organization. • Drafted hosting contracts, maintenance contracts, and scope of work documents. • Conducted WordPress training sessions for clients after site delivery. Skills: Front-end Engineering
Front End Developer
Monkee-Boy Web Design, Inc.
Aug 2015 - Jan 2019
3 yrs 6 mos
• Lead developer for all custom WordPress site development. • Developed dynamic and static websites using HTML, CSS, JS (ES6), PHP, and various web APIs. • Built custom, reusable WordPress plugins and themes. • Conduct code reviews, lead team training sessions, and provide mentorship for junior developers. • Consistently completed projects within scope, budget, and timeline. • Completed maintenance tasks for projects post-launch, including implementing new feature requests, resolving issues, and performing security updates. • Assisted in project and requirement scoping. • Assisted in QA efforts for all company-developed sites. Sites developed while at Monkee-Boy Web Design, Inc. can be viewed from my profile's Projects section. Skills: Front-end Engineering
Front End Development Manager
Clarity Ventures, Inc.
Apr 2014 - Aug 2015
1 yr 5 mos
• Developed DNN, WordPress, and static websites using HTML, CSS, JavaScript/jQuery, and SQL. • Served as the primary point of contact for a number of entrepreneurial, private industry, and government projects. • Consistently completed projects within scope, budget, and timeline. • Delegated project tasks to the front-end development team. • Conducted one-on-one on reviews with front-end development team members. • Performed QA on managed projects. • Organized and lead training sessions for the front-end development team. Skills: Front-end Engineering
Project Manager
Six Red Marbles
Nov 2012 - Mar 2014
1 yr 5 mos
• Managed teams of front-end and back-end developers to create and maintain custom content management systems for our clients. • Trained and led internal and freelance teams on content entry and content management system use for all assessment-related projects. • Managed day-to-day operations for digital and print production projects. • Negotiated business terms and pricing with clients. • Regularly completed projects within the projected time and budgetary requirements. • Created schedules, workflow and pricing trackers, and budgets. • Performed IT tasks for the Austin office, including setting up networks and maintaining computer systems. • Was responsible for all office management tasks for the Austin office, including coordinating moves, ordering supplies, and communicating with building management.
Business Developer
Solomon Exam Prep
Oct 2011 - Jan 2012
4 mos
• Lead business development efforts for a prominent securities industry licensing examination preparation firm. • Negotiated successful business transactions with prominent financial institutions and wealth management firms throughout the Pacific Northwest. • Marketed and sold study material for financial securities exams. • Maintained the company's website.
Independent Contractor
McGraw-Hill
Aug 2011 - Oct 2011
3 mos
• Copyedited high school-level German textbook for print production. • Corrected German spelling and grammatical errors.
Education
  • 2007 - 2011
    University of California, DavisBA, Anthropology, History, German
  • 2012 - 2012
    UCLAEcology and Evolutionary Biology
  • 2010 - 2010
    Humboldt-Universität zu BerlinAnthropology, German
  • 2003 - 2007
    Oak Park High School