Mid-Level Backend Software Engineer

About the role

Granular is a fast‑growing climate‑tech startup building a SaaS platform that helps electricity markets match green generation with consumption on an hourly basis. As a Mid‑Level Backend Software Engineer you will contribute to the core optimisation engine and enable scalable, reliable services for our European and US customers.

Key responsibilities

• Design, develop, test and release new backend functionality for the Granular Energy Platform.
• Implement and maintain REST APIs that expose optimisation and risk‑management capabilities.
• Collaborate with product, data and operations teams to define and shape new features.
• Improve development processes, code quality and team culture.

Required profile

• 3‑6 years of professional software development experience.
• Strong command of a high‑level language (Python preferred, Java or C# acceptable).
• Comfortable working in a fast‑moving startup or remote environment.
• Fluent English with solid communication and organisational skills.

Required skills

• Python (primary language)
• Java or C# (optional)
• Polars data‑manipulation library
• PostgreSQL (relational database)
• Kubernetes on Azure
• Terraform for infrastructure as code
• REST API development
• Message queues and blob storage
• Pandas (optional)

What we offer

• Transparent salary bands based on seniority and location.
• Remote‑first work model with a home‑office stipend and co‑working allowance.
• Three annual all‑hands gatherings across Europe.
• Minimum 30 days of holiday plus public holidays and a paid volunteering day.