Radio Science & Orbit Determination Researcher/Developer (Tudat)

Contribute to developing an open science orbital dynamics platform based on the TU Delft Astrodynamics Toolbox (Tudat), focussing on applications to radio science for planetary missions.

Radio Science & Orbit Determination Researcher/Developer (Tudat)

Job description

We are seeking a researcher/developer to combine core development of the TU Delft Astrodynamics Toolbox (Tudat) with radio-science application development for the development of an open science spaceflight dynamics infrastructure. The goal is to enable high-fidelity orbit propagation and estimation from real tracking data (Doppler, range, VLBI, etc.) for planetary missions. Additional work packages in the same project will focus on space situational awareness and solar system dynamics.

Responsibilities

• Develop and maintain Tudat’s C++ core and Python interfaces, ensuring performance, robustness, and long-term maintainability.
• Implement and validate extensions and improvements to radio-science estimation pipelines, including observation models, dynamical models, and mission-specific configuration.
• Extend relevant background models in Tudat (gravity variations, radiation pressure, atmosphere, spacecraft dynamics) and interfaces for mission data ingestion.
• Lead the application of the framework to selected missions and representative datasets, including defining validation cases, producing reference results, and coordinating scientific priorities with project partners.
• Contribute to scientific publications describing the platform and demonstrating scientific results enabled by the radio-science workflows and open-source toolchain.
• Build end-to-end workflows supporting FAIR and open science, including version-controlled analysis setups and consistent outputs.
• Write documentation, tutorials, and developer guides; support users via issue tracking and community channels.
• Collaborate closely with platform developers and scientists across TU Delft and partner institutes.

Job requirements

• A Master’s degree (or equivalent) in Aerospace Engineering, Mechanical Engineering, Physics, Astronomy or similar
• Strong software engineering skills in C++ and Python, as well as git, CI, testing, code review, etc.
• Strong background and research experience in astrodynamics/orbit determination and numerical methods.
• Experience in usage and development of Tudat or a similar tool is required; experience in the usage and development of Tudat is a strong plus.
• Experience with radio tracking data analysis or planetary mission spacecraft dynamics is a strong plus.
• Ability to work in a multidisciplinary, open-source environment.

TU Delft

Delft University of Technology is a top international university combining science, engineering and design. It delivers world class results in education, research and innovation to address challenges in the areas of energy, climate, mobility, health and digital society.

Faculty Aerospace Engineering

The Faculty of Aerospace Engineering at Delft University of Technology is a leading international community where innovation in aerospace meets global challenges. Our support and scientific staff, including PhD candidates, postdocs, and students, largely work together on three main themes: the energy transition, sustainable aerospace, and safety and security, with the aim of tackling climate change and contributing to the independence and security of Europe.

Conditions of employment

• Duration of contract is 30 months (temporary).
• An excellent pension scheme via the ABP.
• The possibility to compile an individual employment package every year.
• Discount with health insurers on supplemental packages.
• Flexible working week.
• Plenty of opportunities for education, training and courses.
• Partially paid parental leave.
• Attention for working healthy and energetically with the vitality program.