Home / News / Competitions / Administrative Positions / Archive / GATE Institute is looking for Junior researcher (Research area: 3D City Modeling)


Application deadline: 30th of January 2022




GATE is a joint initiative between Sofia University “St. Kliment Ohridski”, Chalmers University of Technology, Sweden and Chalmers Industrial Technology, Sweden. The Swedish institutions are leading organizations in strategic initiatives such as AI Sweden, AI Research Centre, AI Innovation of Sweden and the Digital Twin Cities Centre.

GATE develops research capacity and potential in Big Data and Artificial Intelligence, cultivating the next generation of leading scientists by expanding the existing research network and establishing long-term agreements with leading global organizations. The Institute builds sustainable stakeholder relationships, focusing on technological collaboration between government, industry, academia and non-governmental organizations towards Artificial Intelligence and smart decision-making models.

We use artificial intelligence for a better and safer life.

Be part of the future and participate in applied research that develops innovations in the field of big data and artificial intelligence in collaboration with the scientific community, business and government.

For our research team we are looking for young at heart, motivated for high results and open to the unlimited possibilities of the future


Junior researcher (R1)

Research area: 3D City Modeling


GATE City Digital Twin project is a large interdisciplinary flagship project aims at developing a digital twin platform for designing, testing, applying and servicing the entire lifecycle of the built environment. This ambitious research project will be developed for the first time in Bulgaria. Crucial to its success is the building of semantically enriched 3D model of a city and the further development of the underlying scientific methods and technologies to facilitate the simulation and analysis of city scenarios (urban planning and design, infrastructure development, buildings’ energy performance, air and noise pollution, etc.).

Specific semantics will be developed that address city-scale simulation requirements. This may include the development of new or contributions to emerging Application Domain Extensions for CityGML, meaningful integration of data from heterogeneous sources and semantically enrichment with additional data (e.g., social data), design and implementation of relational (i.e., PostGIS) or a graph database (i.e., Neo4j) to store and import/export geospatial data.

We are looking for junior researchers to build a multidisciplinary team that will go beyond to development of digital replicas and visualizations. The team with a diverse and flexible skillset should explore the full potential of integration of data from all stages of urban development and solving complex problems in urban modelling, simulation, analysis and visualization.


Your responsibilities:

  • Develop new methods and automated solutions for the integration and 3D visualization of data (including geo-spatial and spatial-temporal data) originated from multiple distributed sources (cadastral data, satellite images, point clouds);
  • Develop 3D models that combine geometric details, rich semantics and spatial relationships;
  • Contribute to development of ontology-based definitions and standard’s extensions;
  • Proposes appropriate (and innovative) data ingestion, preparation, integration and enrichment techniques, optimally addressing data quality requirements;
  • Keep up-to-date with latest technology trends and relevant technical standards, such as Resource Description Framework (RDF), CityGML, CityJSON;
  • Participate in educational programs in the field of AI, knowledge management and 3D modeling;
  • Participate in generating ideas for applying the results of scientific work in innovative projects;
  • You are engaged in continuous professional development and participate in training and knowledge exchange events;
  • Prepare presentations to promote research results at national and international level;



  • Bachelor or Master’s degree as a minimum - in computer science, geoinformatics/geomatics, applied mathematics, engineering, or in a related discipline;
  • Experience in 3D modelling and semantic 3D data enrichment;
  • Scripting and programming skills using Python, Java, C++, Scala, R, or other and parsing JSON, XML, CSV, and fixed-width data formats;
  • Experience with GIS and 3D standards such as CityGML, CityJSON, IFC;
  • Experience with GIS software tools and platforms, including but not limited to ArcGIS, QGIS, PostGIS, FME, Cesium ion, CesiumJS and/or QGIS.
  • Experience in data management, including data collection, integration, modeling, clearing, storage and comprehensive data quality assurance;
  • Experience in the development of databases (relational databases, graph databases, etc.) is an advantage.
  • Solid oral/written communication and presentation skills in order to explain the outcome of research (and value thereof) to coworkers and peers; Ability to prioritize tasks and work on multiple assignments, and a deep desire to find ways to create value and deliver results.
  • Fluent English is a must.


Our offer:

  • You will have the freedom to conduct research in any area within the scope and priorities of GATE, creating new visions for the future
  • You will be provided with numerous opportunities for learning, knowledge exchange and career development, locally and internationally
  • Your research will be supported by an advanced research infrastructure, comprising of the GATE platform and Open Innovation Labs
  • You will have a flexible work schedule and, modern and appealing work environment, stirring up creativity and productivity;
  • Competitive working conditions and a salary commensurate with your skills and experience


How to apply:

Please send your contact data and files with personal documents on our Application Form - Gate (gate-ai.eu) till January 30th 2022:

  • Cover/motivation letter that explains the motivating factors for considering the position (max. 2 pp),
  • CV,
  • Copies of diplomas for completed education and certificates of qualification,
  • Two references letters or personal recommendations, arranged by applicants and directly submitted by the letter or provided as contact data in the cover letter
  • As an attachment to your application please sign and enclose the following declaration:

    I agree to the processing of my personal data included in this application for the needs necessary to carry out the recruitment.


Stages of the contest:

1.The Selection Committee reviews the documents, submitted by the candidates and selects those meeting the requirements of the job, as described in the job profile. The selected candidates will be informed by 30 January 2022.

2.Online interviews will be held with the selected applicants in the period 31 January – 18 February 2022.

3. All interviewed candidates will be notified in writing.

4.The successful candidate will be offered a labour contract under the project BG05M2OP001-1.003-0002-C01 „Big Data for Smart Society”.


Additional information on the site www.gate-ai.eu or contact us on: dessislava.petrova@gate-ai.eu


By applying for these positions, you voluntarily provide your personal data and consent to be processed for the purpose of recruitment and selection of personnel. The processing of your personal data shall be carried out in accordance with the requirements of Regulation (EU) 2016/679 (General Data Protection Regulation), the Personal Data Protection Law and related legal acts in Bulgaria.