ML Researcher (NXJ-72)

AI/ML

ML Researcher (NXJ-72)

AI/ML
Skierniewicka 10A, Warszawa

Newxel

Full-time
B2B
Mid
Remote

Job description

We’re looking for an experienced ML researcher to own the full lifecycle of machine learning projects – from problem formulation and research through production deployment and monitoring. You will design, build, and deploy ML models, mainly on tabular data, with full ownership over their production performance and business impact.


Responsibilities


  • Develop, train, and evaluate ML models, with a focus on tabular, predictive, and ranking models

  • Work with data across the full funnel to support performance and optimization use cases

  • Contribute directly to production-focused modeling, ensuring models are practical, scalable, and reliable in real-world use


Requirements


  • Strong hands on experience with ML models for tabular data and deep understanding of underlying methodologies

  • Hands-on experience experience with end-to-end project ownership from research to production

  • Proven ability to extract predictive signal from complex, messy real-world data at scale

  • Experience training models on Big Data and optimizing for inference latency

  • Experience with ML cloud-based platforms and MLOps tools and practices (experiment tracking, model versioning, deployment pipelines)

  • Strong proven Python skills and familiarity with ML packages for tabular data processing (scikit-learn, PyTorch, pandas, polars etc.)

  • Solid understanding of experimental design, causality and model validation

  • Experience working closely with data engineering pipelines


Will be a plus


  • BA in statistics, ML, computer science or related fields

  • Experience with causal inference methods, uplift modeling, A/B testing

  • Familiarity with modern LLM APIs (OpenAI, Anthropic, Google)

  • Experience packaging models, building inference endpoints, and optimizing latency

  • Exposure to drift detection, data quality checks, and performance monitoring

  • Experience with containerization (Docker) and serving frameworks (FastAPI, Flask, TorchServe, BentoML, etc.)


What we offer


  • Competitive salary and benefits package

  • Medical insurance

  • Top equipment kit

  • Full Remote

  • Collaborative and innovative work environment

  • Career growth and development opportunities

  • A chance to work with a talented and driven team of professional


About the project


An AI-powered performance marketing company that manages and optimizes campaigns at scale across a broad range of verticals. The business is built around data-driven decision-making and automation, using a proprietary technology stack that connects with major advertising and tracking ecosystems to support real-time optimization and reliable measurement.

Their internal platform streamlines day-to-day operations for performance teams by providing centralized monitoring, fast feedback loops, and automated controls that reduce manual work. In-house machine learning supports smarter decisioning across core workflows—helping improve efficiency, maintain stable performance, and scale campaigns with consistency while staying focused on measurable business outcomes.

Tech stack

    English

    B2

    Machine Learning

    master

    Python

    advanced

    PyTorch

    advanced

    Big Data

    advanced

    Tabular Data

    advanced

Office location

Published: 12.01.2026

About the company

Newxel

Newxel is a software development company specializing in delivering custom software solutions. They focus on helping businesses with digital transformation through experienced software engineers and innovative technology...

Company profile

ML Researcher (NXJ-72)

Summary of the offer

ML Researcher (NXJ-72)

Skierniewicka 10A, Warszawa
Newxel
By applying, I consent to the processing of my personal data for the purpose of conducting the recruitment process. Informujemy, że administratorem danych jest Newxel LTD, spółka zarejestrowana zgodnie z prawem Cypru pod numerem rejestracyjnym HE 367... MoreThis site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.