Data Scientist

About CalypsoAI

​CalypsoAI, established in 2018, is dedicated to securing the future of artificial intelligence by enabling enterprises to innovate confidently with cutting-edge security and compliance solutions. Our mission is to forge a secure path for safe AI adoption, empowering organisations to leverage AI technologies responsibly and without risk. ​

At CalypsoAI, we believe that securing the future of AI demands innovative thinkers from diverse disciplines and backgrounds. We are committed to building an elite team to advance groundbreaking technology and ensure businesses and society thrive with confidence.

Role Summary

CalypsoAI is looking for an experienced Data Scientist, specialising in Artificial Intelligence and Large Language Models (LLMs), to build and deploy intelligent tools within our pioneering security platform. This role will focus on implementing cutting-edge AI/LLM solutions as practical features for AI red-teaming, defense, and securing agentic systems. You'll work hands-on to operationalise AI models, contributing directly to our platform's core intelligence.

Key Responsibilities:

• Design, develop, fine-tune, and evaluate LLMs and other deep learning models for AI security tasks (e.g., automated red-teaming operations, vulnerability detection, adversarial attack simulation and intelligent defense mechanisms).
• Implement and deploy these AI/LLM-powered tools as robust, scalable features within CalypsoAI's security platform.
• Build and maintain end-to-end pipelines optimised for AI/LLM workflows, including data processing, training/fine-tuning, validation, deployment, and monitoring (MLOps for AI).
• Collaborate closely with AI Researchers to productionize novel AI/LLM algorithms and security techniques.
• Work with Software Engineers to integrate complex AI/LLM components seamlessly into our products
• Optimise AI/LLM models for inference speed, cost, and resource utilisation.
• Monitor model performance and behavior in production, particularly focusing on safety, alignment, and security vulnerabilities.
• Apply software engineering best practices to AI/LLM development and deployment.

Required Qualifications: 

• BS or MS in Computer Science, Artificial Intelligence, Machine Learning, or a related quantitative field.
• 2-5 years of relevant professional experience, including hands-on experience developing, training, or fine-tuning AI models, especially LLMs.
• Strong programming skills in Python and extensive experience with ML/DL frameworks (TensorFlow/PyTorch) and AI/LLM libraries (e.g., Hugging Face Transformers, LangChain).
• Proven experience deploying complex AI/ML models into production environments.
• Strong analytical and problem-solving skills applied to complex AI systems.

• Experience specifically fine-tuning or training large-scale language models.
• Experience deploying LLMs or generative AI models using frameworks like vLLM, TGI, or cloud provider services.
• Understanding of LLM security vulnerabilities (e.g., prompt injection, data poisoning) and mitigation techniques.
• Familiarity with techniques like Reinforcement Learning from Human Feedback (RLHF).
• Experience with vector databases (e.g., Pinecone, Weaviate).

Life at CalypsoAI

At CalypsoAI, we believe that our people are the driving force behind our success. We foster a dynamic, collaborative, and inclusive work environment where innovation thrives, and employees feel empowered to make a real impact. Whether you’re working remotely or at one of our offices, we ensure you have the tools, flexibility, and support to do your best work.

Location

• Dublin Office: Thursdays
• Remotely or Dublin Office: Monday, Tuesday, Wednesday and Friday

Our Benefits & Perks

We offer a competitive benefits package designed to support your well-being, growth, and work-life balance:

✅ 25 Days Annual Leave – We believe in the importance of rest and recharge. Enjoy generous time off to relax and pursue personal passions.

✅ Fully Covered Health & Dental Insurance – Your well-being is our priority. We provide comprehensive health and dental coverage to keep you and your family protected.

✅ Pension Plan (Up to 3% Employer Match) – We invest in your future with a competitive pension plan, matching contributions up to 3%.

✅ TaxSaver & Bike to Work Scheme – Save on commuting costs with our tax-efficient travel benefits, whether you prefer public transport or cycling.

✅ Income Protection – We offer financial security and peace of mind in the event of unforeseen circumstances.

✅ Hybrid Working – We embrace flexibility, offering a hybrid work model that allows you to balance in-office collaboration with remote work.

✅ Dublin City Centre Office – Our modern, conveniently located office in the heart of Dublin provides an inspiring space for collaboration and connection.

✅ Catered Lunch Twice a Week – For those working from the office, we provide delicious, catered lunches twice a week to fuel your productivity and connection with colleagues.

✅ Quarterly Social Events – We love bringing our teams together! From team outings to special events, we ensure there are plenty of opportunities to connect and have fun.

✅ Annual CalypsoAI Day – Each year, we dedicate a special volunteering day for employees to contribute to causes that matter.

✅ Learning & Development Platforms – We support continuous growth with access to online learning platforms, helping employees upskill and stay ahead in their careers.

✅ Work from Anywhere (Up to 3 Weeks Per Year) – Enjoy the freedom to work from anywhere in the world for up to three weeks each year.

✅ Increased Benefits with Tenure – At CalypsoAI, we recognise and reward long-term dedication. As you grow with us, you'll enjoy enhanced pension contributions and additional annual leave, ensuring your commitment is recognised and supported.

At CalypsoAI, you’ll be part of an ambitious, fast-growing team shaping the future of AI security. If you're looking for a role where you can make an impact while enjoying a supportive and rewarding work environment, we’d love to hear from you!