Roman Herrera
Senior Full‑Stack Engineer
About
Full‑stack engineer with 10+ years designing and shipping production systems that turn complex data into intuitive products. Expert in TypeScript / React, Python, AWS, and geospatial ETL with a record of hardening platforms against failures and scaling them to national reach. Proven partner to leadership—helping secure funding rounds—while mentoring teams and championing developer experience. Passionate about developer experience, automation, and using code to simplify the complex.
Core Skills
Professional Experience
- Engineered national‑scale real‑estate intelligence pipelines that ingest zoning, property, and permit data for 300+ US cities, ranking opportunities with LLM‑driven scoring; drives a Next.js UI where users refine leads in real time.
- Closed a six‑figure annual data‑licensing gap by leading an ETL migration to PostGIS, enabling millisecond geospatial filters and eliminating third‑party GIS fees.
- Cut map‑tile costs by 50 % and improved first‑paint speed by 20 % by re‑platforming from Mapbox REST to TileServer‑GL on AWS.
- Reduced production incidents by 65 % through end‑to‑end test automation, CI/CD gatekeeping, and mentoring 2 junior engineers—maintaining a 2 % rollback rate on more than 2000 merged PRs.
- Accelerated fundraising by crafting technical demos, data rooms, and investor pitches that helped leadership secure a multi‑million‑dollar seed round.
- Co‑created Deepblocks Pro, a WebGL 3D zoning modeller in React that lets developers iterate massing studies live; shortened feasibility analysis from days to minutes for thousands of users.
- Architected a multi‑tenant subscription engine that boosted ARR by 22 % YoY while slashing churn‑induced support tickets by 30 %.
- Built ChatDB, a LangChain‑powered chat interface that generates graphs, ranking tables, and maps on demand; drove 40 % higher user engagement and opened a new analytics upsell tier.
- Integrated financial modelling into Deepblocks Pro, enabling instant pro forma calculations and scenario comparisons that influenced $500 M+ in development decisions.
- Developed a React dashboard that optimised import/export routes, cutting freight spend by 15 % for beta customers; the technology sold for six‑figure acquisition within 18 months.
Certifications
XFM110 - Technical Fundamentals of Generative AI
Stanford - Feb 2025
Credential ID 0x7332eA1229c11C627C10eB24c1A6F77BceD1D5c1
Education
JAE Higher Polytechnic Institute
Recent Projects
AIM Engine
A platform to deliver off-market leads for commercial and residential real estate.
Deepblocks Pro
A platform that provides a comprehensive market overview for real estate development planning across 200+ cities.
ChatDB
A chat interface that provides on-demand graphs, ranking tables, and maps using historical data for market selection decisions.
Cryptongo
An engaging educational game designed to teach you about cryptocurrencies and blockchain technology.