Senior Machine Learning Engineer

Permanent contract
Paris
A few days at home
Salary: < €65K
Starting date: November 17, 2025
Experience: > 4 years
Education: Master's Degree

Paylead
Paylead

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Questions and answers about the job

The position

Job description

To strengthen Paylead’s capabilities in bank transaction analysis for banks and merchants, we are looking for a Senior Machine Learning Engineer whose missions will include:

  • Review existing Data Science and ML algorithms and continuously improve them

  • Propose and experiment with new ML‑based solutions to tackle real‑life business problems

  • Build ML algorithms and data pipelines with a strong focus on robustness, scalability, and compliance

  • Deploy, monitor, and scale ML algorithms across all Paylead use cases (internal and external)

You’ll be part of a multidisciplinary, experienced squad of 6 engineers


Preferred experience

  • At least 4 years of professional experience in Machine Learning

    • Excluding internships and academic projects only

    • Experience on challenging, state‑of‑the‑art ML topics

  • Strong engineering or scientific background, such as:

    • Engineering degree with a major in statistics / AI / ML / data science

    • Or Master’s degree in mathematics, statistics, data science, or machine learning

Hard skills

  • Deep understanding of Machine Learning

    • Knows how the models work internally

    • Solid grasp of the mathematics behind ML models

    • Hands‑on experience with ML use cases such as prediction and recommendation systems

  • Strong Python skills, with experience in common ML / data libraries (Pytorch, Polars, Sklearn)

  • Solid SQL skills

  • Comfortable with Bash / CLI, Git, and Docker

Nice to have

  • Experience with Rust

  • First exposure to infrastructure topics (deployment, monitoring, cloud, etc.)

Soft skills

  • Genuine passion for Machine Learning

  • Strong team player

  • Business and product mindset: able to understand use cases, constraints, and impact

  • Willingness to go the extra mile when needed

  • Clear, structured communication (both spoken and written)

Nice to have

  • Contributions to open‑source projects or significant personal projects

  • Strong writing skills, including documentation for internal and external audiences


Recruitment process

  • Screening with CTO

  • Tech interview with ML Engineers

  • Open discussion with the squad

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