Ml Engineer

Gamblingcareers.Com; Barcelona; On-site; EUR 107,000 - 161,000; Full time

Job summary

ADP is hiring a Senior AI Engineer to join the Spark team, applying machine learning to transform our HR data and product experiences at scale. You will collaborate with data scientists and software engineers to build robust models and AI solutions.

The role emphasizes cutting-edge ML, NLP, LLMs, and scalable architectures, with a focus on Python, AWS, Databricks, and experimentation within an Agile environment.

Qualifications

• Bachelor's degree in CS, Engineering, Math, or related field.
• 3–5 years of experience in ML/AI roles.
• Advanced English communication skills.
• Proficient with Python and modern AI/ML tools.

Responsibilities

• Collaborate with engineering and product teams to design, develop, and deploy ML solutions.
• Build scalable ML models and AI systems, including NLP and LLM-based applications.
• Contribute to ML architecture, data pipelines, and deployment infrastructure.
• Mentor teammates and promote best practices in coding and experimentation.

Skills

Python

ML frameworks

NLP

LLMs

CI/CD

Education

Bachelor's degree in Computer Science or related field

Tools

AWS

Databricks

MLflow

SageMaker

Job description

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 what’s next?

In this role you will work with teams to apply machine learning to digitally transform our business processes and the client experience of ADP’s 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. You’ll be accountable for something significant: products that impact people’s 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 behaviours.

You’ll 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 you’ll do

• 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 optimise the HCM system user experience. You are passionate about learning and applying new techniques within machine learning that lead 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. You’ll 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.).

You’ll love working here because you can

• Team collaboration: we value how associates are willing to have difficult conversations, speak up, be an owner, and challenge one another’s ideas to net out the best solution.
• Deliver at epic scale: we are 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.
• Act like an owner & doer: we are mission‑driven and committed to navigating change, encouraging you to take on any challenge and solve complex problems.
• Give back to others: we support our associates in times of need through ADP’s Philanthropic Foundation.
• Join a company committed to equality and equity: our goal is to impact lasting change through our actions.

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ADP is a comprehensive global provider of cloud‑based human capital management (HCM) solutions that unite HR, payroll, talent, time, tax and benefits administration and a leader in business outsourcing services, analytics, and compliance expertise. We believe our people make all the difference in cultivating a down‑to‑earth culture that embraces our core values, welcomes ideas, encourages innovation, and values belonging.

ADP is committed to an inclusive, diverse and equitable workplace and is further committed to providing equal employment opportunities regardless of any protected characteristic including race, color, genetic information, creed, national origin, religion, sex, affectional or sexual orientation, gender identity or expression, lawful alien status, ancestry, age, marital status, protected veteran status or disability. Hiring decisions are based upon ADP’s operating needs, and applicant merit including, but not limited to, qualifications, experience, ability, availability, cooperation, and job performance.

ADP has a long, proud history of conducting business with the highest ethical standards and full compliance with all applicable laws. We also expect our people to uphold our values with the highest level of integrity and behave in a manner that fosters an honest and respectful workplace. Click to learn more about ADP’s culture and our full set of values.