Senior AI Engineer, Barcelona at ADP

ADP; Barcelona; On-site; EUR 65,000 - 90,000; Full time

Job summary

ADP in Barcelona, Spain, is seeking a Senior AI Engineer to design, implement, and scale ML and Generative AI solutions for HR technology products. You will collaborate with data scientists and software engineers in an Agile environment to deliver impactful AI-driven features.

The role requires 3–5 years of experience in AI/ML, strong Python and AWS skills, and a solid foundation in data processing, model deployment, and MLOps.

Qualifications

• Bachelor's degree in Computer Science, Engineering, Math, or related field.
• 3-5 years of relevant experience in AI/ML.
• Advanced English communication skills.

Responsibilities

• Collaborate with engineering and product teams to design and deploy ML solutions.
• Develop and optimize Generative AI models and pipelines.
• Contribute to ML architecture, data pipelines, and APIs at scale.
• Mentor teammates and promote best practices in AI development.

Skills

Python

AI/ML frameworks

English communication

AWS

Education

Bachelor's degree in Computer Science, Engineering, Math, or related field

Master's degree (nice to have)

Tools

SageMaker

Databricks

MLflow

CI/CD pipelines

NoSQL databases

Job description

Apply for Senior AI Engineer, Barcelona at ADP in Barcelona, CT, ES. This Full time on site position offers great opportunities for career growth. Senior AI Engineer ADP is hiring a Senior AI Engineer. Does the thought of working with one of the most comprehensive employment data sets excite you? Are you empathetic to client needs and inspired by transformation and impacting the lives of millions of people every day? Are you looking to join a dynamic, inclusive team environment with a culture of collaboration and belonging? Well, this may be the role for you. Ready to design whats next? In this role, you will work with teams to apply machine learning to digitally transform our business processes and the client experience of ADPs products and solutions. You will collaborate with our innovative data scientists and software engineers in solving real-world business challenges using advanced machine learning techniques. Youll be accountable for something significant: products that impact peoples lives. No two days are the same. Everyday projects range from deep learning, research development, algorithm development, natural language processing to ML infrastructure and deployment, while increasingly leveraging Large Language Models (LLMs) and Generative AI technologies to build intelligent, adaptive solutions.

To thrive in this career as a Senior AI Engineer for the Spark team, you will apply your knowledge of designing and implementing scalable and robust Machine Learning and Generative AI systems using languages, frameworks and tooling such as Python, AWS and Databricks. You should have experience building models in the areas such as natural language processing, deep learning, classification algorithms, recommender systems, and LLM-based applications. Our best engineers in this role are independent thinkers and proactive problem solvers, and as a senior team member, you will be a role model for these behaviors. Youll need to have some formal education in Computer Science or a related quantitative field and know design patterns and data structures. You have the skills to leverage existing models or create new models using the technologies above. But given the scale of our data sets and the complex problems we give you to solve, you will stay challenged and engaged with years of exciting projects ahead all while growing your skills and progressing in a rewarding career.

WHAT YOULL DO:

Heres what you can expect on a typical day: Collaborate and Build. You will collaborate with engineering and product teams in an Agile environment to identify, design, develop, and deploy advanced Machine Learning solutions. You will contribute to the overall ML architecture, infrastructure, data pipelines, and APIs for our solutions. Research Development. You design and implement start-of-the-art data products, machine learning models, and systems to optimize the HCM system user experience. You are passionate about learning and applying new techniques within machine learning that leads to innovations. Deliver at an epic scale. You write pristine code and documentation, champion and define best practices to produce highly adaptive, high-performing, continuous learning AI models/systems. Teamwork and mentorship. You will be part of a thriving team, where you give other team members the space to balance the ability to think independently and creatively while also working together as a team. Youll provide mentorship to them get familiar with the team, environment, and resources. Once they are comfortable and confident, you will give them more challenges to take on.

TO SUCCEED IN THIS ROLE:

Education. You have a bachelor s degree (OR equivalent) in Computer Science, Engineering, Math, or a related field. Experience. You have 3-5 years of experience in relevant skills gained and developed in the same or similar role. Communication. You are an advanced English language speaker. Technical skills. Strong proficiency in Python and modern AI/ML frameworks. Experience building and deploying Generative AI solutions leveraging LLMs, embeddings, RAG architectures, and agentic workflows. Hands-on experience with AWS services (S3, Lambda, Step Functions, SageMaker), Databricks, MLflow, and CI/CD pipelines. Familiarity with vector and NoSQL databases, cloud-native architectures, MLOps/LLMOps practices, model evaluation, and scalable AI application development.

NICE TO HAVE (OPTIONAL): Master s degree in computer science, engineering, math, or a related field Experience with non-relational databases such as NoSQL and Vector databases Understanding of data products (recommender systems, classifiers, chatbots, etc.)

YOULL LOVE WORKING HERE BECAUSE YOU CAN:

Team collaboration. Courage comes from how associates are willing to have difficult conversations, speak up, be an owner, and challenge one anothers ideas to net out the best solution. Deliver at epic scale. We deliver real user outcomes using strong judgment and good instincts. Were obsessed with the art of achieving simplicity with a focus on client happiness and productivity. Be surrounded by curious learners. We align ourselves with other smart people in an environment where we grow and elevate one another to the next level. We encourage our associates to listen, stay agile, and learn from mistakes. Act like an owner doer. Mission-driven and committed to navigating change, you will be encouraged to take on any challenge and solve complex problems. No tasks are beneath or too great for us. We are hands-on and willing to master our craft. Give back to others. Always do the right thing for our clients and our community and humbly give back to the community where we live and work. Support our associates in times of need through ADPs Philanthropic Foundation. Join a company committed to equality and equity. Our goal is to impact lasting change through our actions.

LLM, python, RAG