Data engineer

Fast-growing and impact-driven, Wise Energy develops data-driven solutions that enable companies to reduce their energy consumption and accelerate their decarbonization. Operating at the crossroads of energy and technology, the company builds high-performance tools that transform complex energy data into actionable insights for industries such as manufacturing, logistics, and retail.

Supported by a collaborative and entrepreneurial team, Wise Energy combines technical expertise with a strong product vision to deliver scalable and practical solutions to real-world energy challenges.

To support its growth, Wise Energy is looking for a Data Engineer.

Responsibilities

You will play a key role at the intersection of data architecture, backend development, and energy use cases, contributing directly to the core of the platform.

This position focuses on designing and building robust data systems, including EMS data ingestion, time-series modeling, and high-performance analytical layers.

You will collaborate closely with product, backend, and energy experts to translate real-world energy challenges into scalable and reliable data solutions.

Your main responsibilities:

• Design and evolve the data architecture (ingestion, modeling, analytics)
• Develop and maintain data pipelines (EMS, IoT, metering data)
• Model and process time-series energy data (costs, usage, scenarios)
• Optimize SQL queries and manage PostgreSQL performance and schema
• Develop backend logic and analytical APIs (TypeScript / Deno)
• Ensure data quality, reliability, and traceability across the platform
• Contribute to technical decisions and continuous platform improvement

Profile (freelance OR employee)

• Degree in Computer Science, Data Engineering, or related field
• Fluent in French and English
• Experience in data engineering and/or backend data systems
• Strong expertise in SQL and PostgreSQL
• Experience with TypeScript (Node.js or Deno)
• Experience with data pipelines and data architecture

Nice to have:

• Experience in the energy sector or with EMS / IoT systems
• Experience with Supabase
• Knowledge of performance optimization and scalable systems

Offer

• A key role with strong ownership over the data platform
• Growth opportunities in a fast-scaling environment
• Hybrid work setup (Brussels – Belgian Climate Hub)
• Competitive compensation package including salary and stock options

Your application will be treated with the utmost confidentiality, in accordance with the GDPR. PaHRtners promotes diversity, equity, and inclusion.