NLP Research Scientist

Ova Technologies

$120K — $160K *
Consumer Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Master's or Ph.D. in relevant fields such as Computer Science or AI.
  • 3+ years of experience in NLP research or applied machine learning.
  • Strong understanding of NLP concepts, deep learning, and transformer architecture.
  • Proficiency in Python and hands-on experience with PyTorch or TensorFlow.
  • Experience with NLP frameworks like Hugging Face Transformers and spaCy.

Responsibilities

  • Conduct research in NLP, LLMs, and Generative AI.
  • Design and evaluate NLP models for various tasks including text classification and sentiment analysis.
  • Develop and fine-tune transformer-based models like BERT and GPT.
  • Build Retrieval-Augmented Generation pipelines using vector databases.
  • Design and scale data preprocessing and model training pipelines.
  • Perform prompt engineering and various fine-tuning techniques for applications.
  • Collaborate with cross-disciplinary teams to deploy NLP solutions.

Benefits

  • Flexible work arrangements.
  • Comprehensive health and wellness benefits.
  • Learning, certification, and conference sponsorship opportunities.
  • Access to high-performance GPU infrastructure.
  • Opportunity to work on cutting-edge NLP and Generative AI research.
Full Job Description
NLP Research Scientist

Job Title

NLP Research Scientist

Job Summary

We are seeking an innovative NLP Research Scientist to develop cutting-edge Natural Language Processing (NLP) and Large Language Model (LLM) solutions for real-world applications. The ideal candidate will have a strong background in machine learning, deep learning, and modern NLP techniques, with experience conducting research, developing state-of-the-art models, and translating research into scalable production systems. You will collaborate with multidisciplinary teams to build intelligent language applications that drive business impact.

Key Responsibilities
  • Conduct research in Natural Language Processing (NLP), Large Language Models (LLMs), and Generative AI.
  • Design, develop, and evaluate NLP models for tasks such as text classification, named entity recognition (NER), question answering, summarization, sentiment analysis, machine translation, and conversational AI.
  • Develop and fine-tune transformer-based models including BERT, RoBERTa, T5, GPT, Llama, Mistral, Gemma, and other foundation models.
  • Build Retrieval-Augmented Generation (RAG) pipelines using vector databases and embedding models.
  • Design scalable data preprocessing, model training, evaluation, and inference pipelines.
  • Perform prompt engineering, supervised fine-tuning (SFT), parameter-efficient fine-tuning (PEFT), LoRA, and QLoRA for domain-specific applications.
  • Conduct experiments, benchmark models, analyze results, and optimize model performance for accuracy, latency, and cost.
  • Collaborate with ML engineers, data scientists, software engineers, and product teams to deploy NLP solutions into production.
  • Stay up to date with the latest advancements in NLP, LLMs, retrieval systems, and generative AI through research papers, conferences, and open-source communities.

Required Qualifications
  • Master's or Ph.D. in Computer Science, Artificial Intelligence, Machine Learning, Computational Linguistics, Data Science, or a related field.
  • 3+ years of experience in NLP research or applied machine learning.
  • Strong understanding of:
    • Natural Language Processing
    • Deep Learning
    • Transformer Architectures
    • Attention Mechanisms
    • Representation Learning
    • Language Modeling
    • Information Retrieval
    • Prompt Engineering
  • Proficiency in Python.
  • Hands-on experience with PyTorch or TensorFlow.
  • Experience with Hugging Face Transformers, Sentence Transformers, spaCy, NLTK, or similar NLP frameworks.
  • Strong understanding of NLP evaluation metrics such as BLEU, ROUGE, METEOR, Precision, Recall, F1-Score, and BERTScore.
  • Experience with Git, Docker, Linux, and cloud platforms (AWS, Azure, or Google Cloud).

Preferred Qualifications
  • Experience with Retrieval-Augmented Generation (RAG) architectures.
  • Experience with vector databases such as FAISS, Pinecone, Milvus, Weaviate, or Chroma.
  • Hands-on experience with LLM fine-tuning techniques including LoRA, QLoRA, and PEFT.
  • Familiarity with distributed training frameworks such as DeepSpeed or PyTorch Distributed.
  • Experience with reinforcement learning from human feedback (RLHF) or preference optimization techniques.
  • Publications in leading AI or NLP conferences such as ACL, EMNLP, NAACL, NeurIPS, ICML, ICLR, or COLING.
  • Contributions to open-source NLP or AI projects.

Technical Skills
  • Python
  • PyTorch / TensorFlow
  • Hugging Face Transformers
  • Sentence Transformers
  • spaCy
  • NLTK
  • LangChain
  • LlamaIndex
  • FAISS
  • Pinecone
  • Milvus
  • Docker
  • Kubernetes
  • MLflow
  • Git
  • Linux
  • SQL
  • AWS / Azure / Google Cloud

Soft Skills
  • Strong analytical and research mindset.
  • Excellent problem-solving and critical thinking skills.
  • Effective communication and technical writing abilities.
  • Ability to collaborate with cross-functional teams.
  • Curiosity and passion for advancing NLP and AI research.

Nice to Have
  • Experience with multimodal AI and vision-language models.
  • Knowledge of AI agents and agentic workflows.
  • Experience with synthetic data generation and evaluation.
  • Familiarity with MLOps, model serving, and CI/CD pipelines.
  • Experience with knowledge graphs and semantic search.

Benefits
  • Competitive salary and performance-based incentives.
  • Flexible work arrangements.
  • Comprehensive health and wellness benefits.
  • Learning, certification, and conference sponsorship opportunities.
  • Access to high-performance GPU infrastructure.
  • Opportunity to work on cutting-edge NLP and Generative AI research in a collaborative environment.

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