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Deadline for submission: 13 February 2024


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.

In connection with the institute's ambitious goals for growth, as well as to work on a major international project of the Horizon Europe programme, we are searching for a young at heart, motivated for excellent performance, and open to the future's limitless possibilities.


Junior Researcher

Data Engineer



  • Setup and maintain the data collection tools in the GATE platform (Apache Kafka, NiFi and Hop)
  • Transport data from external sources to the data stores in the GATE platform in different structured and semi-structured formats (SQL, JSON, XML, CSV, etc.) and in different modes of operation (one-time ingestion of static files, import of databases, periodic loading of messages, continuous accumulation of streaming data in real time)
  • Data pre-processing in preparation for subsequent storage and analysis on the GATE platform by filtering, enriching, unifying, synchronizing, combining, etc.
  • Storing the data in different data stores on the GATE platform (Postgres, MongoDB, GraphDB and Hadoop).



  • Advanced degree in technical and computer science, mathematics, computer science, communications and computer engineering or related field;
  • At least one year of experience in computing and communication technologies;
  • Professional experience of working in a Linux environment;
  • Professional experience working with Docker containers;
  • Professional experience working with with AirFlow process workflow management tools;
  • System knowledge in distributed computing systems using both relational (SQL) and non-relational databases (NoSQL);
  • Initial knowledge of the Hadoop architecture and ecosystem (HDFS, Mapreduce);
  • Hands-on experience in using APIs for working with relational and non-relational data (ODBC/JDBC, JSON, XML) and data transport formats over various protocols (TCP sockets, HTTP, MQTT, etc.);
  • Analytical skills, very good communication skills, teamwork. Ability to prioritize tasks and commitments;
  • Discretion, responsibility, accuracy, loyalty;
  • English - excellent level of proficiency


Our offer:

  • You will work on a unique technical infrastructure for Bulgaria built on an institutional cloud managed by Kubernetes;
  • You will learn the tools and technologies for big data processing from the Hadoop ecosystem;
  • You will have the opportunity to work on a large EU-funded Horizon Europe project in an international team of experts and researchers in the field of artificial intelligence and data processing;
  • You will be able to benefit from numerous training, knowledge exchange and professional development opportunities at national and international level;
  • Flexible work schedule and work in a modern and attractive work environment that stimulates creativity and productivity;
  • Competitive working conditions and remuneration 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) until February 13th 2024:

  • 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
  • Copies of documents certifying past work experience in the relevant field
  • 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.


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


By applying for these positions, you voluntarily provide your personal data and consent to the processing of such data for recruitment and selection purposes. The processing of your personal data is carried out in accordance with the requirements of Regulation (EU) 2016/679 (General Data Protection Regulation), the Personal Data Protection Act and related regulations in Bulgaria.


Selection stages:

  • Examination of the documents submitted and admission to the competition of those who satisfy the requirements set out in the notice. The successful candidates will be informed by 13th February 2024.
  • An interview with the successful candidates will take place until 15th February 2024.
  • All interviewed candidates will be informed of the outcome of the competition.
  • The selected candidates will be hired on a labor contract.