danielaalzerreca.com
βFeb 15, 2026 - Frontend Engineer
Premium website for a Basel voice teacher replacing a cumbersome old WordPress setup with a modern Next.js + Vercel stack, built heavily with a vibe-coding workflow.

Chilean developer based in Basel, Switzerland. Building React frontends for biotech research tools at Genedata, helping scientists analyze genomic data and drug discovery workflows.
Building toward systems that treat state, replay, supervision, and recovery as first-class for agents.
Version control for cognition: deterministic traces, causal localization, and accountable agent behavior.
Reliability, debugging, and the operational constraints that make autonomous software trustworthy.
π Basel, Switzerland Β· Developer at Genedata
π Reading Hamming & reorganizing my life in Obsidian (again)
π©πͺ Learning German (slowly, very slowly)
Long-running projects that prove software can last
How a healthcare compliance platform built in 2016 still serves 8 clinics across Chileβwith long-term reliability, no rewrites, and no pivot anxiety.
Chilean healthcare law requires strict patient complaint tracking. Paper fails. Generic tools don't understand compliance.
Built domain-specific SaaS with Meteor.js/MongoDB. Real-time workflows, deadline alerts, compliance reporting.
8 clinics, 8 years in production. Still running on original codebase. Proof that boring tech + domain knowledge wins.
Complete operating system for multi-region pest control company. From spreadsheet chaos to centralized workflowsβsales, scheduling, operations, billing, compliance, all in one system.
Multi-region operations running on spreadsheets and email. No visibility, slow follow-ups, compliance risks.
Built 11 integrated modules: sales pipeline, scheduling, operations, invoicing, collections, compliance, HR, fleet.
10 years running, 91k LOC, 33 collections, 7 automations. Single source of truth replacing dozens of spreadsheets.
βFeb 15, 2026 - Frontend Engineer
Premium website for a Basel voice teacher replacing a cumbersome old WordPress setup with a modern Next.js + Vercel stack, built heavily with a vibe-coding workflow.
βJun 15, 2022 - Mobile Developer
Mobile application for workplace safety and quality of life. Dynamic forms, risk analysis, and worker wellbeing tracking for iOS and Android.
Writing as a tool for clarifying complex technical and personal problems.
βMar 12, 2026
In long-running agent systems, the visible failure is usually downstream from the step where the run first became unrecoverable.
βMar 4, 2026
Model internals can explain tokens, but agent failures are timeline failures that require causal execution history.
I'm always down to chat about frontend architecture, developer experience, or why your commit messages should be essays.
β (Promise: less intense in person than in writing. Probably.)
Based in Basel. Available for coffee if you're around. Mountains nearby preferred.