Senior Backend ML Engineer

Our client is a

global powerhouse in legal research technology

, trusted by professionals worldwide for delivering one of the most extensive and advanced collections of legal information on the market. With cutting-edge AI, data analytics, and next-gen automation, they’re redefining how legal teams discover insights: faster, smarter, and at massive scale.

If you're ready to make a real impact in a high-growth, mission-driven environment, this is your chance to join a team where your work truly matters.

The candidates need to be located (or open to relocation) in Madrid or Barcelona and open to having a hybrid working modality.

Main responsibilities:

Design, develop, and productionize scalable systems using technologies such as Python and Flask Translate customer requirements into practical, real-world solutions that address business needs Collaborate with business stakeholders, engineers, and content teams to identify and deliver high-impact AI-driven products and services Implement comprehensive monitoring, testing, and auditing processes to ensure system quality and reliability Adhere to best practices in model and data governance, including ethics and compliance standards

Core skills/experience:

Bachelor’s or Master’s degree in Computer Science, Mathematics, or a related technical field Experience developing machine learning applications in commercial or research settings Strong ability to translate business challenges into ML-driven solutions Skilled in organizing and analyzing complex datasets to extract insights Proficient in Python, with experience writing and maintaining unit tests Familiar with

version control systems, such as Git (and optionally Graphite) Hands-on experience using Docker for development and deployment

Nice to have:

Portfolio projects Java knowledge Machine learning expertise (NLP )

What's on offer?

Flexible and friendly work culture Hybrid working modality from Madrid or Barcelona Collaborative, multicultural team environment Mental health and well-being support Career growth, leadership mentoring, and ownership of core systems Projects with real-world impact in the legal tech space Access to innovative tools and a fast-paced, mission-driven environment

Our recruitment process?

Step 1: Interview with one of our recruiter Step 2: Screening call with Tech Lead Step 3: Test Home Step 4: Technical interview with HM Step 5: Narrative & behavior call