Posted 5 d ago
Senior Data Scientist BN_28/10/2026
Posted by MARGO on 28 October 2026, 5 days ago. Still on their Lever board when we checked 20 min ago. Half of MARGO's roles come down within 157 days.
What the posting is about
Design and develop LLM-based agentic solutions for complex business processes. Collaborate with business teams to drive AI adoption. Deploy and industrialize models, ensuring quality through testing and DevOps practices. Mentor peers and communicate technical trade-offs effectively.
Read out of the posting
Levelsenior
Experience asked5+ years
EmploymentFull time
LocationWarsaw
RemoteNot stated
Visa sponsorshipNot stated
SalaryNot published, and most postings do not
Posted2026-10-28
Found vialever, direct from their system
We had it within the hour it went up.
The posting, as the company 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.
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.
Copied from MARGO’s own board, not rewritten.
Also open at MARGO
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