Job Description

We are seeking an experienced HVAC and Ventilation System Engineer
to lead the design and development of safety-critical ventilation systems for
nuclear facilities. You will work within one of our engineering teams in a
multicultural and multidisciplinary stimulating environment, where you will be
responsible for establishing the complete design framework—from deriving
top-level requirements from international codes and standards through basic and
detailed design phases.

This role requires deep expertise in translating regulatory
guidelines (IAEA, SSM, and other nuclear codes) into actionable system
requirements while applying rigorous systems engineering principles to ensure
safety, reliability, and regulatory compliance.

What we do at Blykalla

Blykalla is developing the next
generation of nuclear technology with our Small Modular Reactor (SMR) based on
innovative fuel, materials, and reactor designs. As Sweden’s only SMR
developer, we are on a mission to decarbonize industries and enable safe,
scalable, and sustainable energy solutions. Our technology uses uranium nitride
fuel and lead coolant, creating novel challenges and opportunities for the fuel
cycle and supporting systems.

What you’ll get to do

As an HVAC and Ventilation System Engineer, you will play a key
role in leading the design and integration of nuclear ventilation and HVAC
systems, ensuring safety, reliability, and regulatory compliance throughout all
design phases. You’ll collaborate with cross-functional teams and regulatory
bodies to develop systems that meet the highest safety standards for nuclear
facilities. Your key responsibilities would be:

Requirements Development &
Regulatory Compliance

• Derive and establish system
  requirements from international guidelines and nuclear standards (IAEA,
  SSM, ASME AG-1, etc.).
• Interpret and translate
  regulatory requirements into functional, performance, and safety criteria.
• Ensure compliance with nuclear
  safety classifications, QA standards, and maintain traceability throughout
  the design lifecycle.

System Design & Architecture

• Lead conceptual, basic, and
  detailed design of nuclear ventilation and HVAC systems.
• Develop system architectures,
  pressure cascade concepts, and zoning strategies for confinement.
• Define filtration and
  ventilation configurations, including HEPA and carbon filtration systems
  for normal and emergency operations.

System Engineering &
Integration

• Perform system-level trade-off
  studies to balance safety, reliability, and cost.
• Coordinate HVAC integration
  with other safety systems such as containment and fire protection and
  ventilation.
• Apply MBSE methods and manage
  technical data, documentation, and configuration control.

Safety Analysis & Risk
Management

• Conduct FMEA and HAZOP analyses
  for ventilation and confinement systems.
• Evaluate performance under
  normal, accident, and beyond-design-basis conditions.
• Support Verification &
  Validation (V&V) activities and safety reviews in accordance with
  nuclear standards.

Technical Documentation &
Project Management

• Develop and maintain
  comprehensive technical documentation, including system design
  descriptions, design basis documents, P&IDs, flow diagrams,
  single-line diagrams, and safety analysis reports.
• Manage change requests,
  configuration control, and versioning across the project lifecycle.
• Prepare technical reports and
  presentations for regulatory bodies, safety committees, and stakeholders.
• Communicate complex concepts
  clearly to both technical and non-technical audiences.

Collaboration & Leadership

• Collaborate with
  cross-functional teams including reactor engineers, safety specialists,
  structural engineers, and regulatory affairs
• Work closely with regulatory
  authorities during design reviews and licensing processes
• Provide technical guidance and
  mentorship to junior engineers and design teams
• Manage multiple projects and
  meet deadlines in a highly regulated environment
  

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 a few things that will help you succeed in this role:

• Master's degree in Mechanical,
  Nuclear, Energy, Process Engineering, or a related field
• Minimum 10 years of experience
  in HVAC and ventilation system design for nuclear facilities or highly
  regulated
  industries
• Proven track record of leading
  basic and detailed design of safety-critical ventilation systems
• Expert knowledge of nuclear
  ventilation codes and standards including: IAEA Safety Standards, ASME
  AG-1, National regulatory requirements (e.g., SSM, NRC, ONR), ISO
  standards for nuclear ventilation
• Deep understanding of nuclear
  safety classification, safety functions, and defense-in-depth principles
• Expertise in confinement
  design, pressure cascade systems, and contamination control
• Knowledge of HEPA filtration,
  activated carbon systems, and radiation protection principles
• Knowledge and be capable of
  evaluating the results of HVAC modeling and simulation software.)
• Knowledge of systems
  engineering processes and lifecycle management
• Strong analytical and
  problem-solving abilities with meticulous attention to nuclear safety
• Excellent written and verbal
  communication skills in English
• Proven ability to work
  effectively in cross-functional, multicultural teams
• Unwavering commitment to safety
  culture and regulatory compliance
  
  

Meritorious skills:

The following skills are not required but will be considered an
advantage:

• PhD in a relevant engineering
  discipline
• INCOSE SEP (Systems Engineering
  Professional) certification
• Experience with firefighting
  system design for nuclear or highly regulated industries
• Knowledge of Swedish language
• Experience with nuclear
  licensing processes and regulatory interactions
• Field experience in
  construction, testing, commissioning or startup of HVAC and ventilation
  systems for nuclear plants.
  
  

Location

This position is for our office in Stockholm.

So, what do you think?

Joining our team means being part of a supportive and innovative
environment where your ideas are valued and your expertise is recognized. You
will have the opportunity to work with industry leaders and contribute to the
safe and sustainable use of nuclear power.

Note: We encourage applicants from
diverse backgrounds and are an equal-opportunity employer.