Diana N.

Senior Engineering Manager @ Twitch

San Francisco Bay Area

About

Experience

  • Senior Software Engineering Manager at Twitch
    May 2022 - Present · 4 yrs 2 mos

    - Leads and grows high performing teams (5 iOS engineers and, for 2.5 years, 5 Android engineers; successfully hired across senior (L6), mid (L5), entry (L4) levels and promoted 2 SDEs (L5->L6). - Owns quarterly and annual strategy and execution for two mobile platform teams focused on developer velocity, infrastructure and operational excellence. - Defined and drove company-wide mobile platform strategies impacting 16+ engineering teams, including adoption of new architectural pattern, modularization of legacy monolith code, a new experimentation framework, right-to-left language support. - Spearheaded development of internal cross-platform web view technology, enabling full-stack web engineers to ship mobile features, expanding contributor base by 31%. - Directed a 6 month initiative to accelerate release engineering, increasing app release cadence by +122% (22 to 49 per year) and reducing avg. time to market -52% (27 to 13 days). - Automated and streamlined release responsibilities, reducing manual release efforts from 30 to <1.5 hrs per release cycle, unlocked 6-11% of engineering capacity across all mobile teams. - Actively contributes to Twitch culture and leadership development as a member of the Intern Success Partner (2025), Leadership Book Club organizer (2023-24), mentor in the Twitch mentoring program (2022-25), and DEI Engineering Leadership Council (2023).

  • Apple (3 yrs 2 mos)
    • AIML - Engineering Manager
      Jan 2021 - Apr 2022 · 1 yr 4 mos

      - Managed a globally distributed team of 6 software engineers and 5 site reliability engineers responsible for operating data centers hosting 4,500 Apple devices for on-device ML testing. - Directed a $6.6M data center expansion, overseeing infrastructure capacity planning and device procurement/installation, while partnering cross-functionally and reporting progress to the VP of AIML for strategic alignment. - Rebranded and scaled the engineering team by 63%, while expanding managed device fleets by 53% across 4 international sites. - Improved CI/CD platform reliability by implementing staging-based integration testing and rolling agent updates, significantly reducing downtime and upgrade risks. - Organized and facilitated cross-functional off-sites for 3 partner organizations to align roadmaps, clarify ownership boundaries, and establish measurable SLOs/SLAs.

    • Siri - Full Stack Engineer
      Mar 2019 - Jan 2021 · 1 yr 11 mos

      - Accelerated customer adoption of on-device testing infrastructure of ML evaluation, enabling execution of 4M+ ML samples daily built on TeamCity CI/CD. - Designed, built, and scaled a full-stack automation service supporting 80+ Apple teams; expanded functionality by integrating with internal services (new APIs, data models, and UX flows) to automate device availability reporting, eliminating manual processes. - Improved database performance by 4x (from 5 to 1.2 mins ingestion) through optimization of Ruby sync methods, increasing data freshness and reliability for downstream workflows.

  • Junior Web Developer and Junior Designer at Giant Rabbit
    Sep 2016 - Feb 2019 · 2 yrs 6 mos

    Full Stack Development: web based consultant work for 75+ different non-profits - Building full websites in PHP Drupal (7 & 8), phpSlim with Javascript and Node Sass. - Incorporates third-party API tools for fundraising, mass media integration, AWS, printing PDF, etc. - Collaborates with other developers to deliver clients proof of concepts for new features. - Push and migrate features/code live with agile workflow concurrently with multiple different devs. - Conducts interviews for Junior Developers and Project Managers. IT and Dev Ops - Set up AWS servers, S3 buckets, SES emailing, and transferring/configuring DNS/DNR - Tinkers with Ansible for LAMP server setup and rolling out automated security updates and php upgrades. Design Work - Analyzes users' goals and experiences to frame the design process with key themes and objectives. - Establish design vocabulary by selecting fonts, colors and branding elements. - Supported developers with explanations for the user experience of a design.

  • Software Engineer Intern at Robert Half
    May 2015 - Dec 2015 · 8 mos

    - Developed a python web application for internal company use of Amazon Web Service’s Cloud Services. - Designed user-friendly front-end for easy navigation and better user experience. - Used Python, Python-Flask, Docker, Jenkins, AWS and Gitlab. - Focused on continual integration, session handling, authentication and multi-threading.

  • Mills College (2 yrs 4 mos)
    • Teaching Assistant
      Jan 2015 - May 2015 · 5 mos

      - Encourages independent problem solving skills and logical thinking. - Uses paircoding to debug and implement strategic testing.

    • Senior Resident Assistant
      Aug 2014 - Mar 2015 · 8 mos

      - Collaborated in a team of 3 to design and execute a 3 day training program for a staff of 28 focusing on personal and professional development. - Scheduled, administered and facilitated bi-monthly staff meetings in collaboration with supervisor. - Supervised 10 Resident Assistant staff members - Managed up to supervisors

    • Graphic Designer
      Feb 2013 - Sep 2014 · 1 yr 8 mos

      - Regularly update and maintain multimedia presentations and announcements via TV display - Established and controlled branding for publications and media - Redesigned large scale design projects to emphasize the mission statement of the Graduate School of Business - Designed marketing collateral - Successfully negotiated wage and promotion