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AI/ML Engineer

  • Hybrid
    • Barcelona, Catalunya [Cataluña], Spain

Job description

About us

M47 Labs is an AI Engineering company focused on providing businesses with the latest and most advanced Artificial Intelligence solutions. Our deep expertise in AI-Language Technologies, including NLP and LLMs, empowers businesses with custom-built cutting-edge solutions. We are dedicated to creating AI-driven applications that can understand, interpret, and respond to human language. Join us in making the future more intelligent.

Role Overview

As part of our AI-Team, you’ll work closely with the production team to develop impactful AI solutions for our clients using Large Language Models, Speech To Text and Text To Speech, support the pre-sales team in building compelling demos, and drive internal custom machine learning models development. In this role, you’ll also participate in research and development initiatives, exploring new AI technologies and approaches to enhance our offerings. You'll have the chance to share your insights through internal knowledge sharing and external publications, showcasing our innovations and contributing to the AI community.

About you

  • Problem Solving & Ownership: You independently analyze and resolve moderate challenges, identify root causes, and take proactive ownership of your work and team-level concerns before escalating.

  • Organizational Skills: You plan and prioritize effectively, managing multiple responsibilities and coordinating small team projects.

  • Positive Work Environment: You promote open communication, collaboration, and help resolve minor conflicts within the team.

  • Adaptability & Openness to Change: You manage change well, adjusting strategies to maintain productivity in dynamic environments.

  • Effective Communication: You clearly explain moderately complex concepts to both technical and non-technical stakeholders, adapting your style as needed.

  • Continuous Improvement & Learning: You regularly self-evaluate, seek feedback, and stay updated on industry trends and technologies to implement improvements.

  • Quality & Attention to Detail: You maintain high standards, spotting patterns and inconsistencies in complex tasks and team output.


About your day-to-day:
Use ML frameworks, tools, and popular LLMs proficiently, providing guidance to junior colleagues when needed.

Select, customize, fine-tune, and deploy LLMs into software solutions with minimal supervision.

Collaborate autonomously with other developers using AI cloud services like AWS SageMaker and Azure ML.

Apply expertise in prompt engineering to enhance model interactions.

Integrate models seamlessly into software solutions using RESTful APIs.

Work with containerization technologies like Docker to streamline deployment.

Manage CI/CD pipelines independently, automating builds, testing, and deployment for efficient workflows.

Implement automated testing frameworks (unit, integration, and API tests) to ensure robust models and pipelines.

Ensure all models undergo comprehensive testing before production release, adhering to best practices.

Utilize ML lifecycle management tools with support to manage and maintain ML models effectively in production.

What is in it for you?

💪🏽 Indefinite full-time contract

☀️ Office located at the heart of Barcelona

🚀 Follow your career ambition with growth opportunities (horizontal and vertical)

📚On-demand learning budget and ongoing educational company-wide training of relevant topics of our industry

💸 Comprehensive compensation package, including private medical insurance coverage and flexible remuneration through Cobee including meals, gym pass, transport and kindergarten.

🌈 Be part of our diverse communities and enjoy our meetups (Women in Tech, LGTBQ+, Wellbeing, City Lifestyle...)

🌍 Great international, inclusive and dynamic work environment (more than 20 nationalities!)


Job requirements

What you’ll need:

  • 3+ years of experience in AI/Machine Learning roles.

  • Proficiency with ML frameworks and popular LLMs; able to support junior colleagues.

  • Skilled in selecting, fine-tuning, and deploying LLMs independently.

  • Strong command of evaluation metrics (e.g., accuracy, F1 score).

  • Experience in training ML models with TensorFlow, PyTorch, or scikit-learn.

  • Proficient in Python for scripting and developing APIs (e.g., FastAPI).

  • Hands-on experience with Docker and CI/CD pipelines.

  • Understanding of prompt engineering and REST API integrations.

  • Experience with AI cloud platforms (e.g., SageMaker, Azure ML) for deploying ML models.

  • Version control experience (GitHub/GitLab).

  • Experience using vector databases.

  • Basic testing knowledge for models and data pipelines.

  • Strong English communication skills.

  • Degree in Computer Science or related field, or equivalent experience.


What’s nice to have:


  • Familiarity with .NET for model integration in .NET applications.

  • In-depth knowledge of AWS services (S3, Lambda) for scalable ML workflows.

  • Strong technical documentation skills.

  • Experience with advanced ML testing practices.

  • Knowledge of ML lifecycle tools (e.g., MLflow, DVC).

  • Basic understanding of MLOps practices.




Special requirement
For this position you must be a holder of a valid working permit for Spain (or EU passport) and be available to work full-time onsite.

**M47 Labs not only encourages but is actively working on empowering its diverse and inclusive talent. M47 Labs is committed to ensure a non-discriminative workplace, work life and selection process and such decisions will not be influenced by race, color, religion, gender identity or expression, sexual orientation, disability, social and conjugal status, age or other applicable characteristics. M47 Labs prohibits discrimination and harassment of any kind and all employment is decided on the basis of qualifications, merit, and business needs.**

In accordance with the provisions of Regulation (EU) 2016/679 of 27 April (GDPR) and the Organic Law 3/2018 of 5 December (LOPDGDD), we inform you that personal data and email addresses collected from the Data Subject will be processed under the responsibility of M47 LABS & INTERNATIONAL FIDUCIA SL for a legitimate interest and for the purpose of sending communications about our products and services and will be retained for as long as none of the parties object. The data will not be communicated to third parties, unless under legal obligation. You can exercise your rights of access, rectification, portability and erasure of your data and those of restriction and objection to their processing by contacting DIPUTACIÓ, 279 3 6 - 08007 BARCELONA (Barcelona). E-mail: info@m47labs.com. If you consider that the processing does not comply with current legislation, you may file a complaint with the Spanish supervisory authority at www.aepd.es.

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