Senior Data Scientist BN_28/10/2026
At MARGO · Warsaw
Salary: PLN 200–220 an hour
- Data and ML
- Contract
- Senior
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Where you’ll work
Hybrid, based in Warsaw
“Warsaw”
From the location.
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- Posted
- 28 October 2026
- First seen by us
- 3 November 2026
- Last checked
- 17 hours ago
Job description
From MARGO’s job post, as they wrote it.
Context:
A team responsible for the development and industrialization of applications for the Investment Banking division. Accelerating the integration of generative AI solutions and AI agents into business processes. A strategic environment within the platform, with high-impact use cases in document analysis, credit, and finance.
Expectations:
Strong Python with extensive experience in Object-Oriented Programming and enterprise software design patterns.
Read the full description
Proven track record building asynchronous microservices and endpoints using FastAPI.
Hands-on practice in pytest (unit, functional, and integration testing for ML/LLM pipelines).
Bash scripts for automation, data handling, and container interaction.
LLMs Architecture understanding proven by project portfolio.
Architecting multi-step, stateful agentic graphs using LangGraph or Google ADK.
Hands-on experience optimizing LLM pipelines programmatically using DSPy.
Practical knowledge of deploying and running high-throughput open-weight models on GPU infrastructure using runtimes such as vLLM (experience with CUDA and fine-tuning is a strong plus).
Hands-on familiarity with automated build, test, and release pipelines (Jenkins).
Experience setting up tracing, drift detection, and automated evaluations for generative workflows using tools like Phoenix Arize.
Dedication to shipping stable, secure code into flagship banking infrastructure where compliance, auditability, and data security are non-negotiable.
General Stack: Google ADK, LangGraph, DSPy, vLLM, FastAPI, Python, Pytest. Arize Phoenix. Kubernetes, Jenkins, GPUs.
Responsibilities:
Design and develop LLM-based agentic solutions to automate complex business processes.
Work closely with business teams to identify needs and drive the adoption of AI solutions.
Develop data extraction pipelines and implement evaluation and observability frameworks for AI agents.
Deploy and industrialize models (LLMs, GPUs), ensuring quality through testing and DevOps best practices
You are taking full ownership in driving AI features.
You remember to respect the boundaries and non-deterministic nature of LLMs, communicate constraints clearly, and build robust safety rails.
You are a team player, communicate technical trade-offs cleanly with architects and business users, and enjoy mentoring peers.
You are testing ideas and PoCs quickly, validate feasibility with data and avoid technical debt.
Career Prospects:
Build expertise in Agentic AI architectures and the industrialization of LLMs in production. Work on high-visibility projects within the Investment Banking division.
Senior Data Scientist BN_28/10/2026MARGO
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