Joe Jalbert

Software engineer - ten years building ad-tech, clinical data systems, and consumer platforms that hold up at scale.

Featured work

A few projects that show how I think through a problem, end to end.

  • People.inc · 2023-2026

    Ad targeting without third-party cookies

    Led the end-to-end build of a Private Aggregation API pipeline - from the browser, through a Trusted Execution Environment, into S3 - replacing cookie-based audience data for ad targeting. 94% correlation with the legacy cookie method, with no reliance on third-party cookies.

    Also moved lazy-loading, refresh, and placement logic out of hard-coded rules and into centrally managed configs across the site portfolio, giving product and revenue teams direct control over viewability and revenue trade-offs without a code deploy. Applied across sites serving roughly 1% of all ads on the internet.

  • OneStudyTeam · 2022

    Direct data capture for clinical trials

    Built production features for Direct Data Capture software that replaced the mountains of paperwork traditionally used to collect clinical trial data, including for Pfizer's Lyme disease vaccine study. Paper-based data collection is one of the biggest bottlenecks in getting a drug to market, so digitizing it directly sped up the trials it touched. React/TypeScript on the front end, validated end to end against API-driven, PostgreSQL-backed storage.

  • Personal project · 2018-present

    ColorTabs, a Firefox extension

    Lets you set a custom color theme per domain, so different environments are visually distinguishable at a glance. Built out of my own need for it as a developer, still untouched in years and still picking up reviews from a few hundred active users.

    View on Firefox Add-ons (opens in a new tab)

Career

The rest of the path, condensed. Expand any role for more.

  1. Jan 2023 – Feb 2026

    Senior Software Engineer

    People.inc (formerly Dotdash Meredith)

    More detail

    Led the build of a Private Aggregation API pipeline to replace third-party-cookie-based ad targeting, and moved ad delivery to a config-driven system across a portfolio serving roughly 1% of all ads on the internet.

    What I learned

    The importance of proactive communication with third party stakeholders (Google), especially when using new and not widely adopted software.

  2. May 2022 – Dec 2022

    Software Engineer

    OneStudyTeam (formerly Reify Health)

    More detail

    Built production features for Direct Data Capture software that replaced paper-based data collection for clinical trials, including Pfizer's Lyme disease vaccine study.

    What I learned

    The value of working closely with QA engineers (if you're fortunate enough to have them) to understand what can still go wrong, even with automated testing in place.

  3. Oct 2018 – Jan 2022

    Senior Software Engineer

    X-Team

    More detail

    Worked across two flagship products in a cross-functional team with product, design, and QA. On beachbodyondemand.com, built a social, group-based workout experience in React/Redux, and improved page-load performance by moving the third-party SSO integration (Akamai) from client-side to server-side (Node/Express). On thechive.com, maintained the WordPress VIP publication and built a Node.js/Puppeteer scraper against the WP API to detect and log malicious third-party ad activity.

    What I learned

    The value of architectural diagrams, for planning, and for communicating with technical and non-technical people alike.

  4. 2020

    Volunteer Software Engineer

    Tech for Campaigns

    More detail

    Built campaign websites for state-level congressional candidates running in competitive races, built for speed to help drum up grassroots support and volunteers under a tight election timeline.

    What I learned

    Clients often don't know exactly what they want. It's more productive to mock something up and show them than to ask for it from a blank slate.

  5. Aug 2017 – Sep 2018

    Software Developer

    Adweek

    More detail

    Built custom CMS tooling and front-end features for contributors, migrated 10,000+ legacy video embeds to a new hosting platform (PHP/MySQL), and integrated third-party auth to power a premium content paywall. Also rebuilt site navigation to be fully customizable and added geolocation tooling for GDPR compliance.

    What I learned

    Patience with a legacy codebase built in a hurry. It's easy to get frustrated, but "legacy" is just a dirty word for something that makes money.

  6. Nov 2015 – Jan 2017

    Web Developer

    Morgan & Morgan

    More detail

    Built and maintained marketing sites for a nationwide law firm, brought legacy sites up to WCAG 2.0, and ensured cross-browser compatibility.

    What I learned

    The only way to really know if something's accessible is to test it manually, going through the site with a screen reader the way a visually impaired user would, not just adding the right HTML attributes.

  7. Mar 2015 – Sep 2015

    Web Development Intern

    Moxie Media Group

    More detail

    Maintained client sites for a web development agency, fixing front-end bugs and running QA across projects.

    What I learned

    Every client had a different idea of "done," even for similar sites. Better to pin that down early than assume.