Senior OT Network Security Engineer

Improve and secure NKT’s global OT network infrastructure

Are you interested in designing resilient OT network environments and ensuring secure, future‑proof industrial operations? As Senior OT Network Security Engineer at NKT, you will play a central role in maintaining and evolving our global OT network infrastructure across our manufacturing sites. In this important position, you will work with advanced technologies, partner with international teams, and directly support the reliability and safety of our production operations. Do you want to help shape the network foundations of a greener future while being part of a global and growing organization?

Design, develop, and secure advanced OT network environments

Build and optimise secure industrial network solutions. In this role, you will be responsible for reviewing, developing, and improving NKT’s IT and OT Network Infrastructure architecture. You will work directly with setting up, upgrading, and interconnecting industrial networks to ensure stable, secure, and future‑ready operations across our manufacturing sites. You will cooperate closely with automation, production, and maintenance teams to deliver reliable OT network performance aligned with business needs.

Your responsibility will be to:

• Review and propose improvements to IT and OT network design and architecture.
• Configure routers, switches, firewalls, and other critical network components.
• Resolve network issues promptly across both hardware and software layers.
• Maintain and operate network infrastructure, ensuring stability and uptime.
• Continuously evaluate and enhance network configurations and security controls.
  
  

You will be part of the IT Infrastructure & Operations department, reporting to the Network Manager. The position is based in Kaunas, with up to 20 travel days per year internationally.

Experienced OT network specialist with a structured and collaborative approach

You thrive in an environment where conditions can shift quickly and secure, well‑structured network solutions are essential for smooth industrial operations. You own your tasks, follow a methodical process, and navigate intricate technical environments with confidence. Collaboration comes naturally to you — you communicate clearly, work well with both IT and production teams, and enjoy supporting others with your technical skills. You are driven by delivering reliable results and continuously improving network solutions.

You also have:

• Bachelor’s degree in Computer Science, IT, Industrial Automation or related field.
• At least 10 years' experience in IT and OT network configuration, troubleshooting, and maintenance.
• Practical experience with Cisco, Palo Alto, and Siemens network infrastructure.
• Knowledge of ICS, Purdue Model, ISA/IEC 62443, industrial protocols (e.g., Modbus, Profinet, OPC UA).
• Experience working with OT production networks.
  
  

Shape resilient network infrastructure for global manufacturing

NKT is committed to developing a diverse organization and culture where people of diverse backgrounds can grow and are inspired to do their best. We are dedicated to establishing gender diversity at NKT and encouraging all interested candidates to apply – even if you don’t tick all the boxes described. We believe that a diverse organization enables long-term performance, and that an inclusive and welcoming culture creates a better work environment.

At NKT, you’ll be part of a global team that values innovation, collaboration, and continuous learning. We offer career development opportunities, international exposure, and the chance to work on impactful projects that contribute to a more sustainable future. You’ll grow your skills while helping us build secure and resilient infrastructure that supports our green transition.

Benefits And Opportunities We Provide

We offer you a modern office at Kauno Dokas with workplace where your knowledge and experience matter and also full of learning opportunities, and potential. In addition, we are offering:

• Opportunity to be a part of the global team.
• Interesting challenges and tasks, learning opportunities.
• Private health insurance.
• Additional 4 days of paid holidays.
• Flexible working hours.
• Tai chi classes on a regular basis.
• Company-funded access to Linkedin Learning platform.
• Free parking next to the office.
  
  

Salary range for this position is from 4100 Eur to 5500 Eur Gross.

Read more about our offer and listen to some voices of NKT Connectors here !

Aware that personality and cognitive tests might be included in the recruitment process. We will review applications continuously and close the process when we find the right match. We collect confidential candidate experience feedback to improve our recruitment process. Your responses are for quality development only and do not affect hiring decisions. If you have any questions, please reach out to Ugnė Šidlauskė, HR Partner at [email protected]. Please note that due to the GDPR regulations we cannot accept any applications via e-mail.

Be a Connector of the green tomorrow!

About NKT

NKT connects a greener world with high-quality power cable technology and takes centre stage as the world moves towards green energy. NKT designs, manufactures and installs low-, medium- and high-voltage power cable solutions enabling sustainable energy transmission. Since 1891, NKT has innovated the power cable technology building the infrastructure for the first light bulbs to the megawatts created by renewable energy today. NKT is headquartered in Denmark and employs 6,500 people. NKT is listed on Nasdaq Copenhagen and realised a revenue of EUR 3.6 billion in 2025. We connect a greener world . www.nkt.com