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Belgrade, RS

Function:  Engineering
Job Category:  Research & Development

Mathematical Modeler

A safer, low-carbon shipping industry is underpinned by data sharing. We at Wärtsilä Voyage are creating the digital infrastructure needed to enable high-performing maritime logistics – for the safe movement of goods and people. Through our world-leading Smart Marine portfolio, we support our customers in their efforts to ensure secure, highly energy-efficient and cost-effective marine operations. 

Wärtsilä is on a mission to enable sustainable societies through innovation in technology and services. As we change course towards a cleaner, smarter maritime future, we’re looking for top talent to join our team. Are you ready to join the Voyage?


Wärtsilä Voyage Belgrade as a part of Wartsila Voyage is a high-tech, modern development center, which has dozens of unique specialists. The company actively uses flexible development methodologies, a developed technological culture allows creating unique technical solutions.
We create integrated technological solutions to improve the safety and efficiency of shipping, navigation, and ship operations:

  • fleet monitoring and management
  • vessel traffic control systems
  • marine training systems
  • on-board navigation equipment
  • mobile navigation apps


Team of Wartsila marine engineering simulators is looking for mathematical modeler. You can become part of a team which works on a market leader product (45% market share) that imitates marine engineering functionality for vessels.


This is a permanent role, the preferable location is Belgrade, Serbia.


What you will be doing:

  • Development from the scratch for math models of dynamics systems
  • Numerical solution of system of equations
  • Usage of Math modelling SW packages


To be successful in this role, we expect you to have:

  • 3-5 years’ experience in math modelling of the following areas - hydraulics, heat transfer, thermodynamics, mechanics, automation and control, electrical power systems
  • Higher education in Physics/Mechanics/Engineering domain
  • English at intermediate level or higher to work in an international team. 


We will be amazed if you have (but not mandatory):

  • Practical experience in modeling:

Hydraulics (gravity flow, pumping through pipeline, pump characteristics, pipeline elements’ resistance, Bernoulli equation, two-phase media flow (liquid + gas)

Heat Transfer (heat capacity of materials – solid, liquids, gases; heat exchange between various media; temperature transfer & temperature resistance of materials)

Thermodynamics (ideal gas laws; real gas specifics; main thermodynamics parameters and characteristics, its interdependencies; thermodynamics laws; phase transitions)

Mechanics (kinematics and dynamics of rigid body, rotational dynamics equations; mechanical energy parameters and equations, mechanical energy transitions, inertia characteristics; simple mechanisms)

Automation and regulation (main principals and parameters; governors (controllers) – main types and work principals; controlled system parameters and dynamic)

  • C++ programming language knowledge


In Wärtsilä Voyage you will have the opportunity to:

  • Be a part of a global team of professionals
  • Work on complex interesting products at the edge of the technologies
  • Build your career at international scale
  • Introduce your ideas and take initiatives
  • Profit from the relocation package & salary linked at Euro rate
  • Profit from the medical insurance, flexible remote working arrangements & other internal benefits.

Last application date: 30/09/2022

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.

This is Wärtsilä

Wärtsilä Voyage transforms how vessels perform their journeys and ports manage their operations by leveraging the latest digital technologies. Using data and AI-driven software, we deliver real-time insights into operations, performance, and energy use to enhance safety, efficiency, and reliability, saving fuel and minimising emissions. Our solutions combine bridge infrastructure, cloud data services, decision support systems, and smart port solutions to enable shore-to-shore visibility. We are committed to building an end-to-end connected digital ecosystem for shipping where all vessels and ports are integrated, and all operations are safe and sustainable. 

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. We emphasise innovation in sustainable technology and services to help our customers continuously improve their environmental and economic performance. Our dedicated and passionate team of 17,000 professionals in more than 200 locations in 68 countries shape the decarbonisation transformation of our industries across the globe. In 2021, Wärtsilä’s net sales totalled EUR 4.8 billion. Wärtsilä is listed on Nasdaq Helsinki. Find out more at