# Senior AI Researcher ML Engineer Cognitive Computing at Athena Cloud Limited

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- **Company:** Athena Cloud Limited (https://jobs.trythestack.co/companies/athena-cloud-limited)
- **Location:** Greece
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 5–10 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Python, Machine Learning, Deep Learning, Agentic AI, Cognitive Computing, NLP, Retrieval-Augmented Generation, MLOps, Kubernetes, TensorFlow, PyTorch, SQL, Docker, Predictive modelling, Cloud infrastructure, Autonomous systems
- **Posted by employer:** 2026-08-20
- **Added to The Stack:** 2026-08-21
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://jobs.workable.com/view/hMpNksiEbqZMHUt2qxb4LL/hybrid-senior-ai-researcher-ml-engineer-cognitive-computing-in-athens-at-athena-cloud-limited (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/senior-ai-researcher-ml-engineer-cognitive-computing-athena-cloud-limited

## About the role

Responsibilities:
- Lead research and engineering for Agentic AI and Cognitive Computing components (design, prototype, and productionize models).
- Architect and deploy RAG pipelines, document ingestion, conversational orchestration, and self-healing ML systems.
- Build end-to-end MLOps workflows for sovereign cloud environments (data pipelines, training, CI/CD, monitoring).
- Develop anomaly detection, predictive models, and clustering for autonomous infrastructure optimization.
- Collaborate with infrastructure, security, and product teams to meet sovereignty, compliance, and scalability goals.
- Produce reproducible experiments, technical designs, and transition artifacts for engineering teams.

Requirements:
- MSc or PhD in CS, EE, ML, or equivalent experience with a strong research/engineering track record.
- Deep hands-on experience with ML/DL frameworks (PyTorch or TensorFlow), Python, and model deployment.
- Experience with RAG, NLP systems, large-model orchestration, and production MLOps (Kubernetes, Docker).
- Strong knowledge of data engineering, time-series/tabular modelling, anomaly detection, and predictive analytics.
- Prior work with sovereign/cloud infrastructure, secure deployments, or regulated environments is a plus.
- Excellent problem-solving, experimental rigor, and ability to move prototypes to production.

## Responsibilities

Lead the research and development of Cognitive Computing systems and Agentic AI engines to advance autonomous infrastructure. Design and deploy production-grade machine learning models and end-to-end AI pipelines within sovereign cloud environments.

## Requirements

Requires a Master's degree or Ph.D. in Computer Science, Electrical Engineering, or Machine Learning. Candidates must have a proven track record in AI research or machine learning engineering with expertise in Python and modern ML/DL frameworks.

## FAQ

- **Is this Senior AI Researcher ML Engineer Cognitive Computing role still open?** It was posted on 2026-08-20. Listings more than 30 days old may no longer be active, so check Athena Cloud Limited's site before applying.
- **Does Athena Cloud Limited offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Athena Cloud Limited's site.
- **Where is this role located?** The listing gives the location as Greece. It is marked on-site.
- **What skills does this role ask for?** The listing names: Python, Machine Learning, Deep Learning, Agentic AI, Cognitive Computing, NLP, Retrieval-Augmented Generation, MLOps, Kubernetes, TensorFlow, PyTorch, SQL, Docker, Predictive modelling, Cloud infrastructure, Autonomous systems.

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