# Full‑Stack Product Development

> Selected work demonstrating this service.

- [Led the software development of a GIS map application, driving revenue growth by 10x and positioning the product as a primary data asset.](https://advisory.engineer.company/portfolio/led-the-software-development-of-a-gis-map-24/)
- [Directed full‑stack GIS map development, overseeing PostgreSQL, Mapbox, ReactJS, and NodeJS to deliver an integrated solution.](https://advisory.engineer.company/portfolio/directed-full-stack-gis-map-development-overseeing-postgresql-25/)
- [Led the development, deployment, and support of over 30 GIS projects, demonstrating expertise in PostgreSQL, Bash, Python, JavaScript, GDAL, ArcGIS, PostGIS, and Mapbox technologies.](https://advisory.engineer.company/portfolio/led-the-development-deployment-and-support-of-over-35/)
- [Set the platform's founding decisions in the weeks after the repository opened in November 2025 — the layering, database‑first data access and the zero‑warnings bar — and they still hold nine months on.](https://advisory.engineer.company/portfolio/set-the-platform-s-founding-decisions-in-november-2025-80/)
- [Built the operator back‑office — around 40 admin routes and 128 components covering claims, moderation, feature flags, cache and diagnostics — so the platform can be run without database access.](https://advisory.engineer.company/portfolio/built-the-operator-back-office-for-the-platform-102/)
- [Built company ownership claims end to end — a user claims a company, an administrator adjudicates, and an approval rewrites the authorization graph that decides who is allowed to edit what.](https://advisory.engineer.company/portfolio/built-company-ownership-claims-end-to-end-103/)
- [Built the platform's social layer — posts, feed, groups, mentions, a follower graph and an occasions digest — on the same function‑first data layer as the rest of the product.](https://advisory.engineer.company/portfolio/built-the-platform-s-social-layer-106/)
- [Built the hiring marketplace and the seafarer career workspace — 151 stored functions across 48 tables — covering vacancies, applications, certificates, rank progression and verified sea time.](https://advisory.engineer.company/portfolio/built-the-hiring-marketplace-and-career-workspace-107/)

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