Senior Data Scientist (Agentic AI Platform)

Náplň práce, právomoci a zodpovednosti:

What you will do

We are hiring a Senior Data Scientist to play a key role in building our Agentic AI Platform — a system of autonomous, tool-using AI agents that plan, reason, and execute complex business workflows end-to-end. The ideal candidate combines strong ML fundamentals with hands-on experience in LLM-based application development, agent orchestration frameworks, and Microsoft Azure cloud services. You will architect and ship production-grade agentic solutions, mentor junior team members, and set technical direction for GenAI initiatives across the organization.

How you will do it

• Design, build, and productionize multi-agent systems — including planning, tool calling / function calling, memory, and orchestration — using frameworks such as LangGraph, AutoGen, CrewAI, or Semantic Kernel.

• Develop RAG pipelines end-to-end: document ingestion, chunking strategies, embeddings, vector search (Azure AI Search / FAISS / pgvector), re-ranking, and grounding for agent knowledge.

• Integrate agents with enterprise systems and APIs via tool/function calling and Model Context Protocol (MCP) or similar connector patterns.

• Build and maintain LLM evaluation frameworks for agentic workflows — task-completion metrics, hallucination detection, trajectory analysis, LLM-as-judge pipelines, and A/B testing.

• Implement guardrails, safety, and governance for agents: prompt-injection defense, content filtering, role-based tool permissions, human-in-the-loop checkpoints, and audit logging.

• Fine-tune and optimize LLMs where needed (LoRA/PEFT, prompt optimization, model routing, latency/cost trade-offs) on Azure OpenAI / Azure AI Foundry.

• Design, build, and evaluate classical ML models (classification, regression, forecasting, NLP) where they complement agentic workflows.

• Own LLMOps/MLOps for the platform: experiment tracking, prompt versioning, CI/CD, observability and tracing (LangSmith, Azure Monitor, OpenTelemetry), drift monitoring, and retraining strategies.

• Collaborate with data engineers on data quality, availability, and governance across Azure Data Lake, Databricks, and Synapse Analytics.

• Translate ambiguous business problems into agentic AI solutions; present architecture decisions and results to senior stakeholders.

• Mentor junior data scientists, lead code/design reviews, and champion engineering best practices.

Zamestnanecké výhody, benefity:

What We Offer

• Competitive salary and performance-based incentives.

• Opportunity to architect a greenfield agentic AI platform from the ground up.

• Azure and AI certification sponsorship plus a continuous learning budget.

• Technical leadership pathway and mentorship opportunities.

• Access to cutting-edge GenAI tooling, compute, and cross-domain AI projects.

• Flexible hybrid working model and collaborative culture.

Our salary and benefits

The initial basic salary for this position will be in the range of €2,430 - €3,807 per month, plus a 13th month salary applied after your first 6 months in the job. The final package will reflect your experience, skills, and qualifications relevant to the role. We are committed to fair, equitable, and gender-neutral pay practices.

• At Johnson Controls, your work comes with benefits that support both your career and your wellbeing.

• Meal vouchers fully covered by the company.

• Flexible benefits budget with access to 3,500+ options, including a MultiSport card, medical and wellness services.

• Extra savings through retail and lifestyle discounts (Benefit+).

• Allowance for the private kindergarten or nursery to support your family.

• Flexible working hours and home office days.

• Allowance for language courses, professional development support, and wellbeing support.

• On site benefits: massages, distribution of fruits, yoga, psychologist, health month, various events with supporting groups (volunteering activities, branding activities).

• Seniority benefits - extra monthly financial allowance, medical care and support, wellbeing day.

• Relocation support with housing allowance if moving to Slovakia

Požiadavky na zamestnanca:

Required

• Bachelor's or Master's degree in Computer Science, Data Science, Engineering, Mathematics, or a related field.

• 4–5 years of professional experience in data science / ML, with at least 1–2 years building LLM or GenAI applications in production.

• Hands-on experience with agentic frameworks: LangChain/LangGraph, AutoGen, CrewAI, Semantic Kernel, or equivalent (at least one in production).

• Strong understanding of LLM application patterns: prompt engineering, function/tool calling, structured outputs, RAG, agent memory, and multi-agent orchestration.

• Expert-level Python (pandas, NumPy, scikit-learn, async programming, API development with FastAPI).

• Hands-on experience with Azure services: Azure OpenAI / AI Foundry, Azure ML, Azure AI Search, Azure Databricks, Azure Data Factory, or Synapse.

• Experience with vector databases and embeddings (Azure AI Search, Pinecone, Weaviate, Qdrant, FAISS, or pgvector).

• Solid grounding in classical ML: supervised/unsupervised learning, model evaluation, and hyperparameter tuning; experience with TensorFlow or PyTorch.

• Strong SQL skills and experience working with large-scale data.

• Proven MLOps/LLMOps experience: MLflow, prompt/model versioning, CI/CD (Azure DevOps or GitHub Actions), and production monitoring.

• Ability to evaluate and mitigate LLM-specific risks: hallucination, prompt injection, data leakage, and cost/latency constraints.

Preferred

• Experience with Model Context Protocol (MCP), OpenAI Assistants/Agents SDK, or Anthropic tool-use APIs.

• Microsoft certifications: AI-102 (Azure AI Engineer), DP-100 (Azure Data Scientist Associate).

• Experience fine-tuning open-source LLMs (Llama, Mistral, Phi) using LoRA/QLoRA and serving via vLLM or Azure ML endpoints.

• Familiarity with observability/tracing for agents: LangSmith, Langfuse, Arize Phoenix, or OpenTelemetry.

• Knowledge of containerization and deployment: Docker, Kubernetes (AKS), Azure Container Apps.

• Big data experience with Apache Spark (PySpark) via Azure Databricks.

• Experience with knowledge graphs, graph RAG, or semantic layers for agent grounding.

• Contributions to open-source GenAI/agentic projects or published technical content.