Lance Jeffers Email & Phone Number

Tempe, Az, Us

Scottsdale, Arizona, Us

- Reduced initial load time and subsequent navigation time by multiple seconds after leading a cross-team effort involving 4 teams to incorporate caching with Service Workers, IndexedDB, and React Query.- Improved engineering velocity by partnering with the Design team to oversee the development of a reusable component library written with React and CSS-in-JS.- Led a team of 4 software engineers focused on frontend developer productivity as part of an ongoing effort to improve the developer experience within the company.- Raised the accessibility standards of the company’s web products to WCAG “A” level compliance, resulting in a more inclusive user experience. - Organized monthly “JavaScript Guild” meetings where 30+ frontend developers presented best practices, discussed emerging frontend technologies, and held architectural discussions.- Modernized the company’s approach towards application stability support by incorporating observability tools like DataDog Real User Monitoring (RUM) and integrating them with APM monitoring, enabling efficient issue detection and tracing for developers and Site Reliability Engineers.- Cut maintenance time by approximately one week per quarter per team through the implementation of a build tool used by company-wide TypeScript applications, reducing regular maintenance effort required.- Reduced time to create new web projects by 7x by building a Node.js CLI tool that scaffolds an optimized template.- Improved type safety in 370,000+ lines of code across 6 projects by guiding 4 teams in adopting TypeScript and facilitating code migration.- Elevated Nextiva's new-hire Net Promoter Score (NPS) by ~30 points by establishing a standardized onboarding for front-end developers and gathering feedback for continuous enhancement.- Interviewed dozens of engineering candidates and collaborated with leadership and recruiting teams to enhance the interview process.

Scottsdale, Arizona, Us

- Decreased the incidence of failed deployments by 18% by documenting a repeatable deployment flow and sharing it with engineering managers and developers.- Delivered UI features in React and SCSS by working in an agile team with 2-week sprint cycles.- Reduced technical debt by working with product and engineering managers to document and prioritize key items across two codebases.- Participated in code reviews to reduce bugs, share knowledge, and improve overall code quality.

Austin, Tx, Us

- Delivered critical stability improvements that prevented UI code from accidentally causing a Denial Of Service (DOS) against internal production servers.- Contributed to a responsive component library built with React, SCSS, and Storybook by adding Accordion, Tabs, and Calendar components while following accessibility best practices. - Increased test coverage from ~20% to 80% by applying Test-Driven Development (TDD) approaches with Jest and React Testing Library.- Improved the authoring experience for marketing teams by building Contentful CMS integrations using TypeScript.- Participated in code reviews across multiple repositories to ensure high code quality and shared knowledge.

- Streamlined new customer onboarding by developing a Node, React, and TypeScript starter template that could be reused across various designs.- Improved initial page load times by leveraging Static Site Generation and Server Side Rendering features of NextJS.- Simplified content management by leveraging various Content Management Systems (WordPress and Contenful) so that more UI changes could be performed without relying on code updates.

Tempe, Az, Us

- Generated an additional ~$900,000/year in revenue by re-organizing marketing page UI based on heatmap data and A/B testing combined with data collected from support and sales teams.- Created “JavaScript Basics” curriculum for internal employees in other departments to upskill and then worked with the Learning & Development team to track participation and feedback.- Built support-flow features and internal CRM integration with React for a desktop application (Electron) used by ~700 support agents.- Improved software reliability by adding more end-to-end tests via Cypress and instructing other developers on the team on best practices for end-to-end testing.

- Used HTML, CSS, and JavaScript to build customer-facing landing pages.- Increased conversion rate and decreased bounce rate by reducing page load times to 0.9 seconds on average.- Maintained simple DNS and linux hosting for several static websites.