Materials Engineer (Madrid)

About the role

Klinloop is developing a proprietary sorbent material, produced from specific alkaline battery residues through a hydrometallurgical route, to remove hydrogen sulfide from biogas. You will own the journey from lab recipe to robust, scalable production, working hand‑in‑hand with the CTO and a future COO in a small, science‑driven team. Right now, the process runs at lab scale and a pilot plant is being set up. Your mission is to stabilise and scale that process, create solid operating and quality practices, and help transform a promising material into a reliable industrial product that customers can trust.

What you will do

• Lead day‑to‑day production of material batches, from lab reactors to the pilot plant.
• Standardise the current hydrometallurgical process (leaching, precipitation, filtration) to reduce variability between batches and document clear operating procedures.
• Design and implement a quality control protocol...