Senior Full-Stack Developer (React + SQL) – Data & Analytics

About the role

We are looking for a senior full‑stack developer with a strong data background to build fast, native React visualizations for a U.S. demand‑analytics platform. You will work on‑site in Medellín, collaborating directly with product, data engineering, data science, and UX teams.

Key responsibilities

• Design, build, and debug React dashboards and visualization components for KPIs, trends, forecasts, and drill‑downs.
• Write and optimise complex SQL queries on datasets of up to 800 million rows per day.
• Extend and maintain ETL pipelines and caching layers, ensuring data security and low‑latency API responses.
• Partner with cross‑functional teams to translate business problems into clear analytics experiences.

Required profile

• 5+ years of experience in full‑stack development, data engineering, or analytics engineering.
• Professional experience building production‑grade React visualizations (JavaScript/TypeScript).
• Advanced SQL skills with query optimisation on high‑volume data.
• Proficiency in Python for data processing or backend work.
• English level B2+ / C1 for direct collaboration with U.S. teams.

Required skills

• React
• TypeScript / JavaScript
• SQL
• Python
• ETL pipelines
• Caching strategies
• Star and snowflake schema modelling
• REST APIs
• Databricks (or similar cloud data platforms)