# Convex Works > Convex Works is a data systems firm based in Amsterdam, serving Europe. We help growing companies build one complete data system they own and trust — accurate, compliant, and feeding every tool and decision. Companies come to us when they can't trust their numbers, when useful first-party data leaks between their website, product, warehouse, ad platforms, and reporting, or when they want to own the data their business runs on instead of renting it inside vendor silos. We work in three stages: - **Audit** — We trace how customer and revenue data moves through your stack and where it gets dropped, delayed, or trapped, then return a prioritised list of fixes and a build plan. - **Build** — We build collection, storage, transformation, and delivery on infrastructure you control. GDPR and CCPA are handled in the data model and pipelines rather than patched on later, and richer first-party signals feed the ad platforms, AI workflows, sales tools, and dashboards you already pay for. - **Grow** — We stay on as an embedded data team, maintaining the system as vendors and schemas change and turning new business questions into shipped datasets, analyses, and automations. Contact: hello@convex.works. Sitemap: https://convex.works/sitemap.xml. ## Core pages - [Home](https://convex.works/): What Convex Works does, who it's for, and how an engagement works. - [Philosophy](https://convex.works/philosophy): Why Convex Works exists and how the team thinks about owned data systems for growing companies. - [Free data audit](https://convex.works/free-audit): Apply for a free audit. We review your public tracking in about a week and return a report on data gaps, leakage, and priority fixes. - [Contact](https://convex.works/contact): Request an intro call or send an inquiry. ## Case studies - [HouseFacts](https://convex.works/case-studies/housefacts): How first-party measurement recovered conversions hidden by Safari tracking prevention and ad blockers. - [Pneuma](https://convex.works/case-studies/pneuma): EU-hosted, consent-first measurement of the onboarding funnel and marketing, with conversion counts kept honest. - [Viral Loops](https://convex.works/case-studies/viral-loops): A first-party data system feeding one shared event layer, with budget-deciding conversions confirmed server-side. ## Careers - [Careers](https://convex.works/careers): Open roles and open applications. A small senior team shipping production systems with clear ownership and direct client impact. - [GTM Engineer (Full Stack)](https://convex.works/careers/gtm-engineer): Ship websites, landing pages, and growth systems. - [Junior Data & Systems Associate](https://convex.works/careers/junior-data-and-systems-associate): Help ship production-grade data and measurement systems. ## Team - [Nikitas Filosofof](https://www.linkedin.com/in/filosofof/): Managing partner, leading data science and business intelligence. - [Filippos Taprantzis](https://www.linkedin.com/in/ftaprantzis/): Managing partner and CTO, leading engineering. ## Optional - [Privacy Policy](https://convex.works/privacy-policy): How Convex Works handles personal data. - [Terms of Service](https://convex.works/terms-of-service): Terms governing use of the site and services.