AI Engineer (Full-Stack ML Developer)

Job Description:

We’re seeking a hands-on AI Engineer to bring machine learning and generative AI models to life across production systems. You’ll build APIs, deploy models, and use workflow automation platforms like n8n, Airflow, or Make to integrate AI into client-facing tools, content engines, and CX flows.

Key Responsibilities

• Design, build, and maintain scalable APIs to serve machine learning and GenAI models.
• Integrate LLM pipelines (e.g., summarization, personalization, classification) into front-end apps, websites, or campaign systems.
• Create modular, event-driven workflows using n8n or comparable platforms to automate multi-step AI tasks.
• Collaborate with data scientists and GenAI specialists to ensure robust input/output interfaces and error handling.
• Optimize infrastructure for performance, token usage, and cost control.
• Ensure observability, logging, and fallback mechanisms in live AI applications.

Requirements

• 3+ years of experience in software engineering, with a focus on ML model integration.
• Strong Python developer with frameworks like FastAPI, Flask, or similar.
• Familiarity with containerization (Docker), cloud deployment (AWS/GCP), and API architecture.
• Experience orchestrating automation using n8n, Zapier, Airflow, or similar tools.
• Comfort working with vector databases and LLM services (OpenAI, Cohere, Hugging Face).
• Front-end skills in React or Next.js for end-to-end application delivery.

Nice to Have

• Experience with campaign systems (CDP, CMS, email platforms).
• Knowledge of LLMOps, model cost optimization, and ethical AI practices.

What We Offer

• A dynamic, international work environment with colleagues from around the globe.
• A challenging position at a successful company in a growing market.
• A fun and inclusive culture—think foosball, table tennis, themed events, and team parties.
• 3 extra days off (yes, at Merkle we take your well-being very seriously) - in addition to 25 annual vacation days, there are 3 Well-being Days.
• 2 Social Impact Days - you can volunteer for a charity of your choice.
• Extensive learning and development opportunities, including a wide range of personal and online training.
• A hybrid work model, with 2-3 days in the office and the rest working from home.
• A competitive salary and excellent secondary benefits.

Where You’ll Work

You’ll join a talented, diverse team of professionals in our Amsterdam or Rotterdam office. We’re a group of curious problem-solvers who thrive on collaboration, creativity, and making the impossible possible. At Merkle, we value initiative, celebrate individuality, and never forget to have fun along the way.

About Merkle

Merkle is a leading data-driven customer experience management (CXM) company, delivering personalized experiences across platforms and devices for top global brands. With deep expertise in data, technology, and analytics, Merkle helps clients unlock powerful consumer insights and drive hyper-personalized marketing strategies. As part of the dentsu network, Merkle operates in 145 markets with over 65,000 employees worldwide. In the Netherlands, our 150+ experts work with clients like Albert Heijn, Vattenfall, Odido, and VodafoneZiggo. We’re proud partners of Google, Adobe, Salesforce, and Selligent.

Diversity and Inclusion 
At dentsu we believe in the power of diversity. We welcome all applications regardless of age, disability, gender reassignment, marital or civil partner status, pregnancy or maternity, race, color, nationality, ethnic or national origin, religion or belief, sex, or sexual orientation. 

Contact:  
We look forward to receiving your application for any questions, please contact the TA in charge of this role: David Ryall, Senior Talent Acquisition Partner, EMEA, NE. #LI-MERKLE #LI-Onsite #LI-DR2

Location:

Rotterdam

Brand:

Merkle

Time Type:

Full time

Contract Type:

Fixed Term Contract (Fixed Term)