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Daniel Lacaz Ruiz

@daniellacazruiz

Full-stack developer at ZunaChat who took a multi-tenant SaaS from zero to production and builds on-device ML apps.

At ZunaChat, contracted by PubliSend, I led a two-developer team that took a multi-tenant Django and Nuxt SaaS from zero to production in six months. I built its automation builder and unified WhatsApp and Instagram in a real-time inbox with OpenAI and Gemini agents.

On Aligna, contracted by Colunar, I built a React Native app that runs a TFLite model fully on-device and works offline. I also owned the Python ML pipeline, which achieved an average landmark error of 7 px.

For PulsoTech, contracted by bBox Funcional, I built a multi-tenant gym-operations platform and a React Native companion app. I designed its backend to process jobs asynchronously and stream results over WebSockets.

At Pivott Software, I was a core engineer on the Pivott VMS contract-lifecycle SaaS, building spend management and contract reminder features. Earlier, at Noki Systems, I independently built the flagship mobile app used by 300+ organizations across North America.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Developer

Current

Aligna

Jun 2026 - Present (5 months)

Built a React Native/Expo app running a TFLite model on-device for scoliosis detection, owning the ML pipeline and achieving 7px landmark error.

React Native Expo TFLite Python Mediapipe MobileNetV3 Cloudflare Workers PWA

Current

Senior Full-Stack Developer

Current

PulsoTech

Apr 2026 - Present (7 months)

Built a multi-tenant gym-operations SaaS platform with CRM, scheduling, real-time dashboards, and an offline-first React Native companion app.

Django Celery Django Channels WebSockets React Native Expo PostgreSQL Redis

Current

Senior Full-Stack Developer

Current

Independent Consultant

Feb 2025 - Present (1 year 9 months)

Independent consultant leading full-stack development for multiple SaaS and mobile projects, including ZunaChat, Aligna, PulsoTech, and a fintech trading platform.

Python Django Nuxt React React Native AWS LLM OpenAI Gemini TFLite Celery WebSockets PostgreSQL Redis Docker CI CD

Senior Full-Stack Developer

ZunaChat

Jan 2026 - Jun 2026 (5 months)

Led a two-developer team to take a multi-tenant Django/Nuxt MVP to production in six months, building a no-code automation builder, unified inbox, CRM, and audit log.

Django Nuxt AWS OpenAI Gemini Claude Code Pytest Vitest Playwright Sentry

Full-Stack Developer

Fintech Trading Platform

Feb 2025 - Dec 2025 (10 months)

Delivered a full-stack solution for trading-signals engagement, building signal-generation logic and computing actionable trading indicators.

Python Django React Trading Signals Fullstack Development

Software Engineer

Pivott Software

Jun 2023 - Jan 2025 (1 year 7 months)

Core engineer on a team of seven for the 18-month zero-to-production build of Pivott VMS, owning spend management, reminders engine, and multiple domains.

Django Nuxt PostgreSQL SSO Vitest Cypress OfficeJS Microsoft Entra ID (OAuth2 SSO)

Software Engineer

Noki Systems

Sep 2020 - Jun 2023 (2 years 9 months)

Independently built the flagship mobile app used by 300+ organizations, designed and maintained the Django REST API, and integrated Stripe and Twilio.

React Ionic Django REST Framework Stripe Twilio PostgreSQL Mobile Development