Experienced Machine Learning Engineer - Spain (Spanish speaking)

Doctrine; Paris; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Remote work policy

€750 training budget

Gymlib

Mental health support

Health insurance

Swile meal card

Apple equipment

Job summary

Doctrine, based in Paris, specializes in a leading legal AI platform. We are seeking a Machine Learning Engineer to develop NLP models focused on Spanish documents, maintain them in production, and design conversational agents for lawyers.

You will collaborate with data scientists, product managers, and engineers to drive Spanish market initiatives and product roadmap alignment. The role requires strong ML and Python skills, plus fluency in English and Spanish; prior legal domain experience is

Qualifications

• Strong ML knowledge across classical and deep learning.
• Experience with NLP and search engines.
• Ability to work with Spanish language documents.
• Interest in AI developments and production-ready delivery.
• Solid Python development skills.
• English and Spanish proficiency required.

Responsibilities

• Develop NLP models to support information search and recommendations in Spanish docs.
• Maintain and monitor models in production.
• Design conversational agents to assist lawyers.
• Collaborate with engineers, PMs, and designers to identify opportunities.
• Contribute to spreading best practices and engineering strategy.

Skills

Machine Learning

NLP

LLMs

Elasticsearch

Python

English & Spanish

Job description

Our Mission

At Doctrine, we’re building Europe’s leading legal AI platform.

Our belief? Law shouldn’t be slowed down by repetitive tasks. It should be augmented by a specialised AI, designed to understand, analyse and produce legal reasoning at the highest standard.

Our ambition? To help legal professionals work with greater reliability, efficiency and peace of mind, through a single, comprehensive and secure platform.

Today, 27,000 legal professionals across five countries (France, Italy, Germany, Spain and Luxembourg) trust us to do just that.

Our growth is guided by a clear approach: a global vision, grounded in a deep understanding of local specificities.

Behind this ambition, a team of around 250 people, united around one goal: supporting lawyers and legal professionals at every stage of their work, from research to drafting.

And we’re just getting started.

The context

Following rapid and profitable growth in France, Doctrine has expanded to Italy and Germany, then acquired Maïté, a Spanish legaltech company, at the start of 2026.

We are now looking for a Machine Learning Engineer to keep improving our legal AI for the Spanish market. You will work on models and pipelines that process Spanish legal documents, and your work will directly shape the product roadmap for Spain.

Please note: the position is based in Paris, in our offices in the 18th arrondissement.

You can find details about our full stack on GitHub.

Good to know: prior professional experience in the legal field is not required. However, being eager to commit and build expertise in understanding legal documents is essential.

Missions

• Develop NLP models (machine learning–based or otherwise) to support information search and recommendation within legal documents, with a particular focus on the Spanish language.
• Maintain and monitor these models in production.
• Design conversational agents to help lawyers across different legal domains by ensuring accurate answers and streamlining drafting tasks.
• Collaborate with various profiles — including engineers, product managers, and product designers to identify new opportunities for product development.
• Contribute to spreading and consolidating best practices internally, and take part in shaping our Engineering strategy.

Ideal Profil

• Strong knowledge of machine learning (both classical and deep learning) for data extraction and recommendation, ideally with initial experience working with LLMs.
• Experience with natural language search engines and inverted indexes such as Elasticsearch.
• A strong interest in artificial intelligence topics.
• Motivation to identify, analyze, and bring the latest scientific advancements in the field into production.
• Solid Python development skills, with a focus on algorithm design.
• Proficiency in both English and Spanish, as you will be working with legal documents in Spanish.

Extras of the role

• Like all engineers at Doctrine, you will join one of our cross-functional chapters — in this case, the Data Science chapter. Within this chapter, you will contribute to internal projects aimed at improving our processes and shaping our long-term vision. The chapter meets every week to:
• Share knowledge : keep track of the state of the art, review scientific papers, continuous improvement, best practices, etc.
• Propose improvements : experiment with new tools, suggest new processes to implement.
• You will also take part in recruitment : all individual contributors meet candidates through technical assessments or interviews.

What’s in it for you

A flexible remote work policy, allowing up to three days of remote work per week (depending on your team).

A flexible leave policy

Real internal mobility opportunities

Regular team events

A genuine focus on individual and collective learning, with a €750 annual budget for any training related to your role, plus team-wide and company-wide training sessions

A Gymlib subscription for sports and wellness activities

Free access to the Moka.care mental health support platform, including up to 6 individual sessions per year

Health insurance with Alan

A Swile card for meal vouchers and sustainable mobility allowance (€66.60/month)

Discounts and perks via our Works Council (CSE) on the Happypal platform

Brand new Apple equipment

Our values

At Doctrine, our 4 values guide us every day as we work to move things forward.

Challenge the status quo: we champion bold ideas that drive change across an entire industry.

Liberty and responsibility: we encourage autonomy, individual impact and ownership.

Knowledge is power: information is at the heart of Doctrine’s mission, and we constantly strive to grow.

Release early, release often and listen to your customers: we believe in the power of iteration and in constantly listening to our market, our customers and their challenges.

Our hiring process

1. A 30-min intro call with one of our Talent Acquisition Managers to understand your career goals and walk you through what we’re building at Doctrine.
2. A 1-hour conversation with your future manager to dive into the role, team scope and answer all your questions.
3. One or two technical assessments to evaluate your skills in practice.
4. An office visit including: lunch with 3 people from different teams to give you a feel for your future colleagues; a values conversation to share our vision; and a meeting with our CEO, Guillaume.

(The process can be adapted to fit your personal and professional constraints if needed.)

Ladies, go ahead and apply!

Research shows that women in particular tend not to apply for a role when they don’t meet every single requirement. To put your mind at ease: this job description is a guide, nothing more.

If Doctrine interests you, we’d love to hear from you!

Diversity & inclusion

All our roles are open to people with disabilities. Feel free to bring it up at any point during the process. We’re committed to putting in place whatever adjustments are needed to ensure a working environment that works for everyone.