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Jameson Nyeholt

Jameson Nyeholt

Principal Software Engineer • Product UI Architecture

Portland, Oregon, US
(909) 753-9621
English, Spanish

Background


About

About

Principal Software Engineer specializing in large-scale product UI architecture within Ad Tech. I design and deliver cohesive front-end platforms and frameworks that enable teams to ship faster with higher quality. My work spans design system evolution, cross-app migrations, and complex data-driven interfaces—balancing product needs, technical depth, and developer experience. Recognized for bridging product, design, and engineering at scale while remaining a hands-on contributor and architectural leader.

Work Experience

Work Experience

  • Principal Software EngineerMicrosoft Advertising

    Mar, 2023 - Present

    Principal IC driving product UI architecture for Monetize (SSP) and Ad Server platforms. I define architectural patterns, lead complex migrations, and deliver end-to-end UI experiences that scale across multiple product teams.

    • Principal UI architect for the Unified Reporting experience—shipped cross-surface data exploration with performant virtualized tables, adaptive filters, and accessible keyboard navigation. Partnered with PM and Design to deliver Alpha→GA on schedule.

    • Defined and evangelized the front-end architecture strategy for Monetize, consolidating multiple legacy apps into a unified Nx monorepo. Established shared build tooling, typed API clients, and review standards that improved developer velocity by ~30%.

    • Led the migration from anx-react to Fluent UI React across Monetize surfaces. Authored migration playbook, component adapters, and lint rules to enforce design consistency while reducing bundle size and tech debt.

    • Designed and implemented the SMW API migration UI layer to decouple front-end data contracts from backend persistence. Reduced cross-team blockers and improved release confidence through typed query clients and integration tests.

    • Delivered the Cross-Device defaulting experience: a major UX and policy shift moving a paid opt-in feature to default-enabled. Partnered across product and compliance teams to land rollout strategy and instrumentation.

    • Established a lightweight ADR/spec process for UI projects to improve visibility and decision quality. Influenced adoption across multiple engineering teams, establishing a repeatable model for technical proposals.

    • Contributed to the Ads UI Kit (DataTableView, DatePicker, layout primitives) and codified Storybook usage patterns for accessible documentation and visual diffing.

    • Collaborated directly with product leadership to shape roadmap priorities for reporting, deal setup, and ad quality tooling. Regularly presented technical trade-offs and recommendations to senior engineering and PM leadership.

  • Senior Software Engineering ManagerMicrosoft Advertising

    Jun, 2022 - Feb, 20239 months

    Led reliability and performance initiatives post-acquisition; incubated feature proofs of concept and improved observability.

    • Increased load performance by 50% for Sellers Monitoring Workflow through API refactors and UI lazy-loading.

    • Implemented observability improvements with new Grafana dashboards and alerting signals.

    • Provided v-team technical leadership during transition to Microsoft tooling and pipelines.

    • Delivered customer-facing feature prototypes for validation and productionization.

  • Senior Software Engineer, Team LeadXandr

    Jul, 2020 - May, 20221 year 11 months

    Team lead for a six-engineer group building publisher-facing monitoring and analytics tools within the Monetize platform.

    • Architected and led delivery of the Sellers Monitoring Workflow UI, enabling real-time performance insight for publishers.

    • Refactored legacy codebases into a monorepo to share components and CI pipelines across apps.

    • Mentored engineers, guided design reviews, and established agile ceremonies for sustainable velocity.

  • Software Engineer IIXandr

    Mar, 2019 - Jun, 20201 year 4 months

    Full-stack engineer delivering customer-visible features across Monetize SSP and Ad Server.

    • Introduced TypeScript to the Monetize UI codebase, significantly reducing runtime errors.

    • Pioneered a Lerna monorepo pattern later scaled across engineering.

    • Built new performance analytics views for publishers; mentored junior developers.

  • Senior Software EngineerJama Software

    Apr, 2018 - Feb, 201911 months

    Led development of integration and analytics features across Jama Analyze and Jama Connect platforms.

    • Integrated Jama Analyze (formerly Notion.io) with Jama Connect for unified analytics.

    • Delivered major UX improvements for data management and system health.

    • Embedded with newly acquired teams to accelerate integration.

  • Software Engineer IIJama Software

    Jan, 2015 - Mar, 20183 years 3 months

    Full-stack engineer on SOC2-compliant requirements-traceability platform used by aerospace and medical device customers.

    • Built rule-based relationship and test-management features for Jama Connect.

    • Served as Scrum Master, improving sprint predictability and throughput.

    • Contributed to front-end guild standards and build health dashboards.

  • Software EngineerSnapflow

    Apr, 2013 - Dec, 20141 year 9 months

    Built a single-page workflow builder using Angular.js and RESTful APIs.

    • Maintained UI delivery velocity following senior departures.

    • Led technical screening and interview process for near-shore candidates.

  • Front End Developer10th Degree

    Jun, 2012 - Mar, 201310 months

    Developed SEM/SEO-optimized websites for automotive clients.

    • Built responsive, SEO-friendly sites for multiple dealerships.

    • Interviewed and mentored junior developers.

  • Web Developer, Contract Web Developer

    Jun, 2007 - May, 20125 years

    Freelance web developer building maintainable, SEO-friendly sites for small businesses and nonprofits while completing undergraduate studies.

Skills

Skills

  • Languages

    TypeScript

    JavaScript

    PHP

    Java

    Scala

    Python

    Ruby

    Swift

    Bash

    Lua

  • Frontend & Node.js

    React.js

    Fluent UI

    Node.js

    Nx

    Storybook

    Redux

    Webpack

    GraphQL

    Express.js

    Cypress

    Jest

    Enzyme

    SASS

    LESS

  • Architecture & Systems

    Monorepos

    Micro Frontends

    Design Systems

    Accessibility (A11y)

    Performance Optimization

    ADR Process

    Frontend Observability

  • Infrastructure & DevOps

    Azure Pipelines

    Docker

    Kubernetes

    Helm

    Prometheus

    Grafana

    Concourse CI

  • Databases

    PostgreSQL

    MariaDB

    MySQL

    MongoDB

Education

Education

  • Political Science, Bachelor of Arts, Honors, California State University, Long Beach

    Aug, 2007 - May, 2012

Volunteer Work

Volunteer Work

  • Volunteer, Stone Soup PDX

    Oct, 2024 - Oct, 2024

    Prepared meals for youth experiencing mental health crises in the Portland area.

Interests

Interests

  • Camping

    campingoutdoorshikingbackpacking
  • Tabletop Gaming

    board gamesroleplayingstrategyDungeons & Dragons
  • Design & Data Visualization

    UXinformation designaestheticsdata storytelling