Sigma AI is a general training data collection, preparation and annotation services company. With 30+ years of experience in the data annotation space, we support companies with the right mix of people, processes and technology to train smarter AI that serves humans better.

Sigma Cognition is an AI consultancy and full-service proof-of-concept and solutions provider.

We're looking a Junior Computational Linguist to provide technical support and advice on NLP and AI to the Sigma project management team.

Responsibilities:
- To collaborate with the Sigma AI team in the analysis of customer proposals, preparation of offers, carrying out of tests or pilots and training of the team of annotators or reviewers.
- To configure annotation tools, automatically pre-annotate or generate data if possible, or implement active learning models to accelerate the annotation process, evaluate the quality of projects using quality metrics, and automatically detect errors.

Requirements:
- Degree in Linguistics.




- Knowledge of NLP techniques: text classification, NER, POS, dependency grammars, relationship detection, question-answering, machine translation, context-free language and grammar modeling, automatic transcription and dialogue systems.
- Python language.
- Linux and Bash scripting.

Preferred:
- Master's degree in Computational Linguistics or NLP.
- Knowledge of audio, video and text annotation tools, active learning models and quality metrics.
- Knowledge of Machine Learning, Deep Learning and Transformers.
- Knowledge of Python NLP libraries: NLTK, Scikit-learn, Spacy, RASA and Transformers.
- Acoustic analysis tools such as PRAAT.
- Computer-assisted translation (CAT) tools.
- Descriptive and inferential statistics.
- Experience of annotation projects.
- Knowledge of linguistic typology.

📌 Junior Computational Linguist (Madrid)
🏢 Sigma Group
📍 Madrid