Recommended expert
Salar (M.sc.) Mohtaj
Project management and tutor
Experience
Jun 2024 - Present
1 year 9 monthsProject management and tutor
LLMs Learning Journey
- Designed and managed an upskilling academy for Deutsche Telekom.
May 2023 - Jun 2024
1 year 2 monthsProject management
News-Polygraph
- Led development of multi-modal AI models for disinformation detection.
Dec 2019 - Present
6 years 3 monthsBerlin, Germany
Research Scientist
German Research Center for AI (DFKI)
- Evaluated and improved quality of machine-generated text for NLP applications.
- Developed transfer learning approaches for fake news detection.
- Created and delivered an online NLP course for AI Campus.
Mar 2019 - Nov 2022
3 years 9 monthsDeveloper
TextComplexityDE
- Built and deployed a German text readability assessment module.
- Organized a national challenge on text complexity prediction.
Mar 2019 - Nov 2019
9 monthsBerlin, Germany
Research Scientist
Technical University of Berlin
- Built supervised/unsupervised models for automated claim extraction.
- Designed German text readability assessment tools and datasets.
Feb 2017 - Aug 2017
7 monthsDeveloper
Parsivar
- Developed an open-source Persian NLP toolkit (normalizer, stemmer, POS tagger).
Sep 2015 - Jan 2018
2 years 5 monthsDeveloper
Hamtajoo
- Built a Persian plagiarism detection system for scientific papers.
- Implemented scalable, asynchronous processing with Celery and RabbitMQ.
Apr 2014 - Feb 2019
4 years 11 monthsTehran, Iran, Islamic Republic of
Researcher and Developer
ICT Research Institute of ACECR
- Developed a Persian plagiarism detection platform used by academic institutions.
- Created the widely adopted Persian NLP toolkit, Parsivar.
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Education (12 years), Information Technology (12 years), Telecommunication (1.5 years), and Media and Entertainment (1 year).
Education
Information Technology
Telecommunication
Media and Entertainment
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Research and Development (12 years), Product Development (8.5 years), Information Technology (5 years), and Project Management (3 years).
Research and Development
Product Development
Information Technology
Project Management
Summary
I’m a researcher with a background in NLP and information retrieval, focusing on the evaluation and real-world application of generative models. My work spans machine learning and large language models, including projects on harmful content detection, fake news identification, and text complexity assessment, resulting in publicly available datasets, practical tools, and international publications.
Skills
- Programming & Data: Python, C/c++, R, Sql (Postgres)
- Llm Tools & Frameworks: Langchain, Llamaindex, Promptfoo, Hugging Face Hub
- Ml / Nlp Frameworks: Pytorch, Hugging Face Transformers, Spacy, Scikit-learn, Allennlp
- Infrastructure: Docker, Git, Aws, Pycharm, Apache Lucene/solr
Languages
Persian
NativeEnglish
AdvancedGerman
IntermediateEducation
Jan 2020 - Jun 2024
Technical University of Berlin
PhD in Computer Engineering · Computer Engineering · Berlin, Germany
Sep 2011 - Feb 2014
AmirKabir University of Technology
Master of Science, School of Computer Engineering · Computer Engineering · Tehran, Iran, Islamic Republic of · 17.3/20
Sep 2006 - Jun 2011
Shahrood University of Technology
B.S., School of Computer Engineering · Computer Engineering · Shahrud, Iran, Islamic Republic of · 16/20
Profile
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Frequently asked questions
Do you have questions? Here you can find further information.
Where is Salar based?
Salar is based in Berlin, Germany.
What languages does Salar speak?
Salar speaks the following languages: Persian (Native), English (Advanced), German (Intermediate).
How many years of experience does Salar have?
Salar has at least 12 years of experience. During this time, Salar has worked in at least 5 different roles and for 8 different companies. The average length of individual experience is 2 years and 6 months. Note that Salar may not have shared all experience and actually has more experience.
What roles would Salar be best suited for?
Based on recent experience, Salar would be well-suited for roles such as: Project management and tutor, Project management, Research Scientist.
What is Salar's latest experience?
Salar's most recent position is Project management and tutor at LLMs Learning Journey.
What companies has Salar worked for in recent years?
In recent years, Salar has worked for LLMs Learning Journey, News-Polygraph, German Research Center for AI (DFKI), and TextComplexityDE.
Which industries is Salar most experienced in?
Salar is most experienced in industries like Education, Information Technology (IT), and Telecommunication. Salar also has some experience in Media, Entertainment and Publishing.
Which business areas is Salar most experienced in?
Salar is most experienced in business areas like Research and Development (R&D), Product Development, and Information Technology (IT). Salar also has some experience in Project Management.
Which industries has Salar worked in recently?
Salar has recently worked in industries like Information Technology (IT), Education, and Telecommunication.
Which business areas has Salar worked in recently?
Salar has recently worked in business areas like Research and Development (R&D), Product Development, and Project Management.
What is Salar's education?
Salar holds a Doctorate in Computer Engineering from Technical University of Berlin, a Master in Computer Engineering from AmirKabir University of Technology and a Bachelor in Computer Engineering from Shahrood University of Technology.
What is the availability of Salar?
Salar is immediately available full-time for suitable projects.
What is the rate of Salar?
Salar's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.
How to hire Salar?
To hire Salar, click the Meet button on the profile to request a meeting and discuss your project needs.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
1000
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500
250
Market avg: 840-1000 €
Market avg: 840-1000 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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