Manuel Martinez — Filter Developer

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Profile

Filter Developer at eyeo (Adblock Plus / AdBlock) · specialising in anti-circumvention.

Reverse engineers adversarial JavaScript; counters ad-circumvention techniques; ships fast filter fixes at scale for millions of users.

Lead maintainer with 14,000+ commits to the ABP anti-circumvention filterlist.

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Filter Developer — Anti-Circumvention 2021 → present

eyeo GmbH (Adblock Plus / AdBlock) · gitlab.com/eyeo/anti-cv/abp-filters-anti-cv

Lead maintainer of the ABP anti-circumvention filterlist, an open-source GPLv3 project enabled by default in Adblock Plus and AdBlock (and used under the hood of several browsers), serving millions of users.
Maintain filter coverage for high-profile circumventing platforms including YouTube, Facebook, eBay, and retail media networks, countering active anti-adblock measures.
Identified and countered circumvention implementations at Facebook and eBay, triggering anti-adblock escalation at both platforms.
Reverse engineer using JavaScript, browser DevTools, and ABP snippet filters to detect and neutralise adversarial/circumventing ad-delivery techniques.
Counter websites that actively detect and discriminate against adblockers, developing filter-based solutions to restore user first! browsing.
Contribute specifications for new ABP snippet filters based on real-world circumvention patterns, helping shape what gets prioritised in the snippet backlog.
Ship rapid filter fixes through automated deployment pipelines; triage and resolve community-reported issues on GitLab.
Monitor cross-ecosystem circumvention trends via the Filter List Authors Slack community, tracking developments across ABP, AdGuard, and uBlock Origin.
Collaborate async with a geographically distributed open-source team; all work conducted publicly on GitLab (previously GitHub).

Filter Developer 2020 → 2021

eyeo GmbH (Adblock Plus / AdBlock) · github.com/abp-filters/abp-filters-anti-cv (archived)

Reviewed, updated, and maintained filters across multiple ABP and AdBlock filterlists.
Categorised and prioritised filter issues via DevTools; triaged community-reported breakage.
Collaborated with filterlist authors to ship targeted fixes and minimise false positives.

CS Senior Partner Specialist / Service Executive 2012 → 2020

Booking.com

Debugged website performance and verified functionality; liaised with developer support teams on escalated site issues.
Reported bugs and tested product deployments across customer and partner-facing platforms.
Ran cross-browser and cross-platform QA across internal tools; diagnosed and escalated technical issues in complex web environments.

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JavaScript / Asynchronous JS / DOM

ABP / AdGuard / uBlock Origin filter syntax & snippets/scriptlets

Reverse engineering ad‑circumventing/adversarial websites

Browser DevTools (Chromium, Firefox)

Unix shell

Git / GitLab / GitHub

Python

Ruby on Rails

HTML & CSS

Open source contribution workflows

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Le Wagon — Lille (Batch #328) 2019

Full-Stack Web Developer Bootcamp · HTML, CSS, JavaScript ES2015, Ruby on Rails, SQL, Git

Udacity 2018 – 2019

Front-End Web Developer Nanodegree · Intro to Programming Nanodegree

IUSAPAR University 2002 – 2007

Bachelor's Degree in Fine Arts

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