ML Researcher (Remote | $60–$120/hr)

Synthires; Spain; Remote; EUR 74,000 - 147,000; Part time

Job summary

Synthires is seeking an experienced ML Engineer (MSc or PhD) for a remote, part-time contract (approximately 15 hours per week). You will develop and optimize ML models, training pipelines and inference systems using Python.

This role focuses on reproducible workflows, memory and performance optimization, and collaboration on global projects with flexible scheduling. Immediate availability is preferred.

Qualifications

• Master's degree or PhD in a quantitative field.
• Strong ML engineering experience with model development.
• Proven ability to build and validate ML workflows.

Responsibilities

• Develop and validate ML models, training pipelines and inference systems.
• Implement components, data pipelines, evaluation systems and numerical methods.
• Create reproducible Python workflows and optimize performance.

Skills

Python

ML workflows

Model development

Data pipelines

Education

Master's degree or PhD in quantitative field

Job description

ML Engineer (MSc. or PhD) (Remote | $60–$120/hr)

Position: ML Engineer (MSc. or PhD)

Type: Contractor (Part-Time, approximately 15 hours/week)

Compensation: $60–$120/hour

Location: Remote (Worldwide)

About the Opportunity

This opportunity is for experienced Machine Learning Engineers to contribute to AI training projects involving model development, training and inference systems, and performance optimization. The role is highly coding-intensive, with a focus on Python, reproducible workflows, and coding agents.

Key Responsibilities

• Develop and validate machine learning models, training pipelines, and inference systems.
• Implement model components, data pipelines, evaluation systems, and numerical methods.
• Build reproducible workflows using Python and command-line tools.
• Debug numerical and system-level issues and optimize memory usage and performance.
• Create, solve, review, and validate challenging machine learning engineering tasks.

Required Qualifications

• Master's degree or PhD in Computer Science, Machine Learning, AI, Applied Mathematics, Statistics, Engineering, or a related quantitative field.
• Strong professional or research experience in machine learning.
• Practical proficiency in Python and experience using coding agents.
• Ability to implement, debug, and validate complex machine learning workflows.

Preferred Qualifications

• Experience at an established technology company, AI laboratory, or research organization.
• Exceptional academic or open-source engineering experience demonstrating relevant expertise.

Compensation

• $60–$120/hour, with output-based payment for tasks meeting project specifications.
• Approximately 15 hours per week with a flexible schedule.
• Immediate availability preferred; first task expected within 24–48 hours after onboarding.