Personalization ML Engineer — Remote, High-Scale

Lever, Inc.; Netherlands; Remote; EUR 71,000 - 106,000; Full time

Benefits offered by this job

Unlimited vacation

Work-from-home stipend

Apple laptop provided

Annual training & development budget

Maternity/paternity leave

Team offsite events

Stock options

Job summary

Lever, Inc. is seeking a Machine Learning Engineer focused on Personalization, based in the Netherlands, with fully remote work options.

You will design and deploy high-load, real-time ML services to power personalized shopping experiences across platforms and domains. You will work with ranking and search teams, translate behavioral signals into actionable recommendations, and drive experiments and A/B tests to measure impact.

Qualifications

• 3+ years of professional experience in applied machine learning.
• Proven experience building, deploying, and maintaining personalization, recommendation, or ranking systems in production.
• Experience designing and analyzing A/B tests and using experimental results to guide product or model decisions.
• Excellent English communication skills, both written and verbal.

Responsibilities

• Develop and improve personalized experiences across different products, platforms, and e-commerce domains.
• Design, build, ship, and maintain high-load, real-time machine learning services supporting personalization at scale.
• Model user interactions and behavioral signals to better understand shopper preferences and deliver relevant experiences.
• Research and evaluate different personalization and recommendation approaches to identify opportunities for improvement.
• Formulate and validate hypotheses around personalization using data, experimentation, and A/B testing.
• Analyze the impact of personalization initiatives and identify opportunities to improve key business performance indicators.
• Collaborate closely with technical and non-technical stakeholders to develop, refine, and evolve personalization capabilities.
• Work cross-functionally with engineering and machine learning teams, including ranking teams, to deliver integrated solutions.
• Communicate technical findings, recommendations, and business value clearly to stakeholders within and beyond the team.
• Take ownership of problems from investigation and experimentation through implementation and continuous improvement.

Skills

Python

SQL

Big data

Production systems

A/B testing

Cloud platforms

English fluency

Cross-functional

Analytical skills

Autonomy

Proactive mindset

Tools

Big data stack

Job description

Lever, Inc. is seeking a Machine Learning Engineer focused on Personalization, based in the Netherlands, with fully remote work options.

You will design and deploy high-load, real-time ML services to power personalized shopping experiences across platforms and domains. You will work with ranking and search teams, translate behavioral signals into actionable recommendations, and drive experiments and A/B tests to measure impact.