Senior ML Engineer - Search & LLM Ops

RavenPack; Helsinki; On-site; EUR 85,000 - 120,000; Full time

Benefits offered by this job

Growth opportunity

Competitive salary

Continuous learning

Diversity in DNA

Job summary

RavenPack in Marbella is seeking an experienced Senior Machine Learning Engineer to join our Search & Recommendation team at our sunny headquarters. You will own the full ML lifecycle from ideation to deployment and help build scalable, personalized content delivery for financial professionals.

You will work with product managers, software engineers and data scientists to design ranking and retrieval models, tune language models for finance domain, and stay ahead with research in ML, NLP and

Qualifications

• Master’s or PhD in Computer Science, Machine Learning, Data Science, or related field.
• 3+ years of hands-on production ML experience in IR/Search/Recommender Systems.
• Strong Python skills and SQL or similar query languages.
• Expertise with PyTorch or TensorFlow and Scikit-learn/Hugging Face.
• Hands-on experience with vector databases.
• Analytical mindset with strong statistical/mathematical reasoning.
• Excellent English communication (written and spoken).

Responsibilities

• Own end-to-end model development: design, build, and deploy advanced ranking and retrieval models.
• Innovate in semantic search: fine-tune language models and use embedding techniques for speed and accuracy.
• Build and scale recommender systems to personalize user experience and content discovery.
• Collaborate with product, software, and data science teams to translate business needs into technical solutions.
• Stay ahead of trends in ML, NLP, and information retrieval through research and prototyping.

Skills

Python programming

SQL

ML problem solving

English communication

Education

Master’s/PhD in CS/ML/Data Science

Tools

PyTorch

TensorFlow

Scikit-learn

Hugging Face

Vector databases

Job description

At RavenPack, we are at the forefront of developing the next generation of generative AI tools for the finance industry and beyond. With 20 years of experience as a leading big data analytics provider for financial services, we empower our clients—including some of the world's most successful hedge funds, banks, and asset managers—to enhance returns, reduce risk, and increase efficiency by integrating public information into their models and workflows. Building on this expertise, we are launching a new suite of GenAI and SaaS services, designed specifically for financial professionals.

Join a Company that is Powering the Future of Finance with AI

RavenPack has been recognized as the Best Alternative Data Provider by WatersTechnology and has been included in this year’s Top 100 Next Unicorns by Viva Technology. RavenPack has launched Bigdata, our Gen-AI platform tailored for finance, which is already being recognized as the #1 platform for powering financial AI agents.

European legal working status is required.

Join RavenPack

RavenPack is looking for an experienced Senior Machine Learning Engineer to join our Search & Recommendation team at our sunny headquarters in Marbella.

Your mission will be to architect and build the next generation of our search and recommendation intelligence. You will take ownership of the full machine learning lifecycle, from ideation and data exploration to model deployment. By creating sophisticated, scalable, and personalized content delivery systems, you will directly shape how top financial professionals worldwide discover and interact with the critical information that drives their decisions. This is a unique opportunity to solve complex challenges at the intersection of information retrieval, NLP and finance.

The ability to communicate effectively in English both in writing and verbally is a must. European legal working status is required.

What You'll Be Doing

As a key member of the team, you will have the autonomy to innovate and the responsibility to deliver robust, high-impact solutions.

Own Model Development: Lead the end-to-end design, development, and deployment of advanced ranking algorithms and retrieval models to deliver highly relevant search results and content.

Innovate in Semantic Search: Fine-tune and distill Language Models to enhance their domain‑specific expertise. You'll implement cutting‑edge semantic embedding techniques (e.g., binary, matryoshka, late interaction models) to optimize for speed and accuracy.

Build & Scale Recommender Systems: Architect and implement sophisticated recommender systems that personalize the user experience, driving engagement and content discovery.

Collaborate & Mentor: Work closely with product managers, software engineers, and data scientists to translate business needs into technical solutions.

Stay Ahead of the Curve: Actively research and evaluate emerging trends and academic research in ML, NLP, and Information Retrieval, prototyping new ideas to maintain our competitive edge.

What We're Looking For

We are seeking a seasoned expert with a passion for building intelligent systems and solving complex problems.

• A Master’s or PhD in Computer Science, Machine Learning, Data Science, or a related quantitative field.
• 3+ years of hands‑on professional experience in building and deploying machine learning models in a production environment, with a significant focus on Information Retrieval, Search, or Recommender Systems.
• Strong programming skills in Python and familiarity with SQL or other query languages.
• Deep knowledge of ML frameworks like PyTorch or TensorFlow, and libraries like Scikit-learn and Hugging Face.
• Hands‑on experience with vector databases.
• Analytical Mindset: Exceptional quantitative and problem‑solving skills, with a proven ability to apply rigorous statistical and mathematical reasoning to complex, real‑world challenges.
• Excellent verbal and written communication skills in English. You are a clear and precise communicator who excels in a collaborative, agile team environment.

Bonus Points

• Experience in the financial domain.
• Experience with MLOps tools and cloud platforms.

What's in it for You?

• Growth Opportunity: Join a rapidly growing company with 180+ team members with offices in New York, Madrid, and Marbella, building AI that truly matters for business and finance.
• Competitive Salary: In RavenPack, we believe that your time and experience needs to be fairly rewarded.
• Continuous learning: We provide the support needed to grow within the team.
• Innovation: Innovation is the key to our success, so we encourage you to speak up and tell us about your vision.
• Diversity is in our DNA! You will work in an international environment (over 29 nationalities and 24 languages spoken!)

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.