Leslie Cohn-Wein

Director of Engineering

Dallas, Texas, United States15 yrs 6 mos experience
Most Likely To SwitchHighly Stable

Key Highlights

  • Led design system development at GitHub.
  • Pioneered data-driven experiments at Netlify.
  • Advocated for web accessibility across projects.
Stackforce AI infers this person is a SaaS-focused frontend engineering leader with a strong emphasis on design systems and user experience.

Contact

Skills

Core Skills

Design SystemsUser ActivationFrontend DevelopmentWeb DevelopmentDigital Communications

Other Skills

ReactConversionCoachingTechnical DecisionsProject ManagementData-driven ExperimentsCustomer AcquisitionCSS ArchitectureJamstackReduxHTML5SassVueVuePressES6

About

I'm a design-minded frontend software engineering leader with experience building productive teams and delivering resilient, user-centered web apps and sites that increase conversions and win awards. I especially love working with teams using React, component libraries, and CSS, and I am a passionate advocate for web accessibility. With a background in agencies, startups, and product-led growth teams, I'm especially keen on shipping quality code that can bring rapid results and business value through iteration.

Experience

15 yrs 6 mos
Total Experience
3 yrs 1 mo
Average Tenure
4 yrs 3 mos
Current Experience

Github

Staff Engineering Manager, Design Systems

Feb 2022Present · 4 yrs 3 mos · Remote (San Francisco HQ) · Remote

  • Lead and support the team who builds Primer, GitHub's design system.
ReactDesign Systems

Netlify

3 roles

Engineering Manager, Growth

Jun 2021Jan 2022 · 7 mos

  • Lead the Growth pod, a rapidly expanding team with targeted goals around user activation and conversion.
  • In this role, I focused on:
  • coaching and supporting engineers in rapidly delivering experimental features
  • providing guidance on technical decisions and removing blockers
  • working with engineers on scoping and estimating work in order to reach key business outcomes faster
  • creating clarity on our team's mission through close collaboration with my Product Management partner and clear project management processes
  • streamlining collaboration between Engineering, Product, Design, and Data to gain faster insights
  • ensuring proper implementation of instrumentation
  • managing the team's QA and release process
  • recruiting, interviewing, and hiring engineers
  • growing engineers through 1:1 goal setting, accountability, and feedback
  • identifying targeted opportunities for individual engineers to create greater impact on our users and the company
  • serve as a management liaison for the frontend guild, supporting the frontend engineering discipline at Netlify and advocating for initiatives like a design system, adoption of visual regression testing, and gradual TypeScript migration
User ActivationConversionCoachingTechnical DecisionsProject Management

Staff Front End Engineer

Promoted

Jun 2020Jun 2021 · 1 yr

  • In 2020, Netlify raised its Series C and I was promoted to be Netlify's first Staff Frontend Engineer. I was also the founding engineer on Netlify's new Growth team, shipping data-driven experiments focused on customer acquisition, activation, and retention.
  • In this role, I also:
  • helped expand the core frontend discipline from 2 to 11 engineers during rapid-growth Series C phase, participating in every step of the hiring process from interview design and interviewing to onboarding, code review, and mentorship
  • kicked off 3 major initiatives (testing, dependency updates, and CSS architecture) to improve the stability, quality, and developer experience of working in our React codebase
  • wrote a technical implementation plan for the creation of a design system
  • shipped a lot! From a brand new central dashboard in the Netlify app (dubbed the "Team Overview"), to launching a new pricing scheme and security features, to handling frontend code review for major releases like Build Plugins, 2FA, and self-hosted Git
  • partnered with others across the Engineering org to adopt feature flags into our codebase and development workflows
  • shipped improvements to our internal React component library and design tokens
  • wrote guidelines to help engineers properly prioritize accessibility bugs
  • invited to speak on Smashing Podcast about how we build Netlify on Netlify
  • lead live Q&A sessions with speakers at October's virtual Jamstack Conference
  • hosted topic tables at Reactathon about dynamic Jamstack and web accessibility
  • lead a small team to build linkable log lines, a highlight of the company’s first-ever “Netlivation Day”: from design to QA in a single day!
Data-driven ExperimentsCustomer AcquisitionReactCSS ArchitectureFrontend Development

Senior Front End Engineer

Oct 2018Jun 2020 · 1 yr 8 mos

  • As a front end engineer at Netlify (joining early Series B as employee 30-something), I built new user-facing features, squashed bugs, and helped maintain our core customer-facing product (app.netlify.com): a React web app with Redux built on the Jamstack architecture.
  • I also developed new pages on our marketing site, spun up a new website for the Jamstack Conference, and onboarded engineers from our Developer Experience team during their product rotations.
  • A few releases I'm extra proud of:
  • working with a small team to concept and build the Netlify Analytics product from the ground up, prototyping with front end charting libraries, influencing UX decisions, and owning UI development of the MVP
  • evolving the charts developed for the Analytics product to be used for a new "Builds" page, showing usage charts and insights
  • launching a total rebuild of our documentation site https://docs.netlify.com - and learning Vue and VuePress in the process!
  • pairing on a "notifications panel" in the app that presents realtime StatusPage updates, powered by a serverless function
ReactJamstackReduxHTML5SassFrontend Development

Canvas united

Lead Front End Engineer

Jan 2016Oct 2018 · 2 yrs 9 mos · Remote (New York, New York HQ)

  • At Canvas, I served as the lead front end engineer on a small team at a digital agency headquartered in NYC. From my home office in Dallas, I partnered with skilled designers and full stack engineers to build sites from the ground up for a diverse assortment of clients.
  • Produced work that garnered recognition from Communication Arts Interactive, Awwwards, and The Webbys
  • Lead development of mobile-first, responsive websites using HTML5, Sass, and ES6
  • Built front ends using React and static site generators like Gatsby and Middleman
  • Spearheaded the adoption of Jamstack architecture, leveraging Contentful and Netlify
  • Created custom animations with Sass keyframes, SVGs, Greensock, and Velocity.js
  • Engineered interactive 3D visualizations in WebGL with three.js and D3.js
  • Utilized modern techniques like CSS grid and clip-path with graceful fallbacks
  • Implemented WCAG 2.0 AA best practices and served as a company-wide resource on web accessibility
  • Maintained internal boilerplates and libraries used on production sites and helped develop "skinnable" reusable components for use across multiple client projects
  • Mentored junior developers and code reviewed front end features
  • Presented at regular engineering demo nights and "lunch and learn" seminars
  • Partnered with senior leadership on the Canvas Process Team to improve company procedures and increase efficiency
  • Selected client list:
  • The Parker Palm Springs
  • Crunch Fitness
  • WorldPride NYC / Stonewall50
  • The Beekman Hotel
  • Howard Hughes Corporation (Ward Village)
  • Woods Bagot
  • Dataminr
HTML5SassES6ReactJamstackFrontend Development

Resource/ammirati, an ibm company

Front End Developer

Jan 2014Dec 2015 · 1 yr 11 mos · New York, New York

  • At Resource/Ammirati, I collaborated with a small team of designers and back end developers to build sites for notable clients at a fast-paced, full-service agency. I helped our clients increase pageviews and conversions by creating memorable brand associations and ensuring quality across browsers and devices.
  • Developed responsive websites from scratch using HTML5, Sass, JavaScript, and jQuery
  • Built static sites using CakePHP, MVC frameworks, and static site generators
  • Worked on front ends powered by popular CMSes including WordPress & Drupal
  • Utilized Grunt and Gulp automation tools to speed development
  • Maintained boilerplates and contributed to front end best practices
  • Selected client list:
  • Nintendo
  • In The Raw
  • Sweet 'N Low
  • Comedians in Cars Getting Coffee
  • Brooklyn Bowl
  • Pirate's Booty
HTML5SassJavaScriptjQueryWeb Development

Union for reform judaism

3 roles

Web & Digital Communications Manager, Youth Programs

Jul 2013Dec 2013 · 5 mos

  • Following my promotion to Communications Manager, I managed the digital presence and coordinated communications for more than 30 youth programs across North America. I also continued to oversee web and communications training for hundreds of staff.
  • Designed and developed WordPress blogs for 15+ individual brands and annual conventions
  • Created coordinated digital marketing campaigns that lead to record attendance
  • Interpreted web and email analytics to develop communications strategies informed by data
  • Designed and ran graphics at NFTY Conventions and URJ Biennials for thousands of guests
  • Presented workshops at NFTY Conventions and URJ Biennials on communications topics
  • Promoted from Web Associate in July 2013
WordPressDigital MarketingWeb AnalyticsDigital Communications

Web Associate, NFTY & URJ Camps

Aug 2010Jul 2013 · 2 yrs 11 mos

  • As Web Associate for NFTY and the URJ Camps, I provided digital and communications support for youth programs across North America.
  • Facilitated the creation and implementation of staff training protocols on web technology
  • Assisted staff in updating their websites, sending bulk email, and posting to social media
  • Lead troubleshooting efforts and debugged HTML email display issues
  • Promoted to Communications Manager in July 2013

Head Resident Advisor, Kutz Camp

Jun 2010Aug 2010 · 2 mos

  • Served as head camp counselor at a teen leadership summer camp, overseeing a staff of 15+ college-aged counselors and more than 150 campers. Also designed and edited the daily camp newspaper in InDesign.
  • Past summer positions held at camp include Senior Resident Advisor (2009), Resident Advisor (2007), Ambassador Supervisor (2007) & Office Assistant / Canteen Staff (2006).

Open media foundation

Web & Graphics Intern

Sep 2009Jun 2010 · 9 mos · Denver, Colorado

  • As an intern at OMF, I designed and implemented Drupal websites for socially conscious non-profits in Denver.
  • Conducted discovery process with clients
  • Strategized and built sitemaps and database diagrams in OmniGraffle
  • Designed Photoshop mockups for presentation
  • Assisted in Drupal installation, customization, and CSS theming for chosen design
  • Trained clients on using the Drupal admin
  • Served as an AmeriCorps fellow, providing services to community organizations in need
  • I also worked with fellow interns to revision the Digital Media Outreach Center as a partnership between the University of Denver and the Open Media Foundation, encouraging symbiotic growth for student developers and local non-profits.

University of denver

Online Editor, The Clarion

Mar 2009Mar 2010 · 1 yr · Denver, Colorado

  • As online editor of the University of Denver's official student newspaper The Clarion, I managed the online workflow, including uploading & editing new media content on a weekly basis.
  • I also created mockups & oversaw a full website redesign that increased pageviews by 10,000 a week. The redesign included interactive campus crime maps, video interviews, & social media integration. We won ninth Best of Show for a small school website at the National College Journalism Convention in San Diego in February 2010.

Smart start colorado

Web Intern

Mar 2008Jun 2008 · 3 mos · Denver, Colorado

  • I was hand-selected by my Web Application Development professor to create a content management system for an early childhood education organization utilizing Coldfusion, SQL, & standards-based HTML & CSS. I designed & built out the CMS functionality and implemented an interactive Flash map of Colorado displaying dynamic data.

Education

University of Denver

BA — Digital Communication and Media/Multimedia

Jan 2006Jan 2010

LC Anderson High School

High School Diploma

Jan 2002Jan 2006

Stackforce found 100+ more professionals with Design Systems & User Activation

Explore similar profiles based on matching skills and experience