Own full-stack delivery and applied machine learning experiments at Bells of Steel in Calgary, using React Native, TypeScript, and Python.

This senior contract role combines production mobile development with wearable research and evidence-based product decisions. You will work directly with the founder, owning the React Native/Expo app, Supabase/Postgres backend, local-first data, sensor ingestion, and ML evaluation. Hands-on technical design, SQL, APIs, authorization, statistics, and practical React/TypeScript are central to the work.

Key Responsibilities: Own app release, monitoring, and day-to-day operation

Build reliable sync, access control, and sensor ingestion

Design wearable measurement and machine learning experiments

Turn validated findings into coaching features





Review AI-assisted code and maintain reproducible decisions

Requirements: Production mobile app shipping and post-launch support experience

Personally built and evaluated applied machine learning systems

Solid backend, SQL, API, authorization, and React skills

Python, statistics, calibration, leakage, and reference error knowledge

Usually six-plus years owning technical design and delivery decisions

Lead Bells of Steel’s app, data pipeline, and machine learning calls through Calgary’s hybrid contract schedule.

📌 Senior Full-Stack Applied ML Lead (Calgary)
🏢 Bells of Steel
📍 Calgary