Core designer

What we do at Blykalla

Blykalla is a Swedish deep-tech company at the forefront of the nuclear industry, pioneering the development of small modular reactors that provide clean, safe, and reliable energy. Thanks to lead-cooling, we achieve high safety in a very compact format, allowing for a simple and cost-effective design that can be mass-produced. Our unique reactor design will provide safe and green baseload energy that perfectly complements solar and wind power.

What you’ll get to do

We're seeking a junior / mid-level Core Designer to join our Nuclear Engineering & Safety team in Stockholm. In this role, you will design and analyze fast reactor core configurations, optimize fuel loading patterns, and ensure safe, efficient, and economical operation of nuclear reactors throughout their fuel cycles.

Design and optimize reactor core variants for our cutting-edge lead-cooled fast reactor designs

Perform neutronic and burn-up analysis using industry-standard codes

Conduct safety analyses including shutdown margin, power peaking, and thermal-hydraulic evaluations

Develop and validate core design models and methodologies

Prepare technical documentation, design reports, and licensing submittals for regulatory review

Support transient and accident analyses to demonstrate compliance with safety limits

Stay current with advances in fuel designs, computational methods, and regulatory requirements

Who’ll you’ll get to work with

The core designer sits in the Nuclear engineering & safety team within Blykalla, and reports to the manager of Nuclear engineering & safety. We are a diverse team that is passionate about our work and our company.

Who you are

You will be part of a highly skilled team with a can-do attitude. We value personal chemistry and strive to create a workplace where you enjoy coming to. There are however a few things that we think will help for you to succeed in this role, these are:

Master's degree in nuclear engineering, physics, or a related field

0-5 ye