AI/ML Engineer

Craftzing and Sagacify are looking for an AI/ML Engineer who is as comfortable in a client workshop as in a codebase. Someone who does not see understanding a business problem and building the AI system that solves it as two separate jobs, but as two things that make each other better.

Do you get energy from turning a client's fuzzy challenge into a working AI solution, whether that's an LLM-powered assistant or a well-tuned predictive model, and then explaining clearly why it works? Then you will probably feel right at home here.

Job requirements

We're on the lookout for an AI/ML Engineer who bridges hands-on AI engineering and client collaboration. Someone who loves getting hands-on with LLMs, agents and RAG pipelines, has solid roots in classical machine learning, and cares just as much about the client's business outcome as about the technical solution itself. In this role, you'll help clients identify where AI creates real value, then design, build and deliver production-grade solutions, with a strong focus on generative AI and LLM-based applications, while picking the right tool for each problem, from a gradient-boosted model to a multi-agent system.

In this role you sit at the intersection of clients, business and engineering, working across teams and disciplines. You'll report to the Head of ML at Sagacify and collaborate with the wider Sagacify and Craftzing delivery and sales organisation.

What you'll do

Understand clients' business needs and translate them into clear, feasible end-to-end AI solutions

Act as a trusted point of contact for clients throughout the project, from scoping to delivery

Run discovery sessions and technical workshops with business and technical stakeholders

Design and build AI solutions combining LLMs, vector databases, APIs, orchestration layers and user interfaces

Develop agents and RAG pipelines connecting client data to LLMs for grounded, reliable answers

Perform prompt and context engineering to improve output quality and reduce hallucinations

Build, train and evaluate classical ML models (classification, regression, forecasting, clustering) when they are the best fit for the problem

Handle the data side: gathering, cleaning, validating data quality and feature engineering

Evaluate solutions rigorously, using ML metrics, generative AI metrics and production monitoring (quality, drift, costs)

Deploy solutions to the cloud with attention to security, reliability and cost efficiency, including versioning and reproducibility of models and data

Present and explain AI concepts, trade-offs and results to non-technical audiences

Support sales in qualifying opportunities, estimating effort and writing proposals

Contribute to demos, proofs of concept and internal knowledge sharing

You stay in the code, you stay close to the client, and you keep learning as you go.

Who we're looking for

You hold a Master's degree in Computer Science, Engineering, Data Science, Mathematics, Statistics or a related field

You have 2 to 5 years of experience in AI/ML engineering or related fields

You're proficient in Python and software development best practices

You have strong machine learning fundamentals: supervised and unsupervised learning, feature engineering, model validation and the statistics behind them

You have hands-on experience with the Python data and ML stack: Pandas, NumPy, Scikit-learn and PyTorch (or TensorFlow)

You have a solid understanding of LLM fundamentals: Transformers, generation parameters, RAG and fine-tuning approaches

You have hands-on experience with tools such as the OpenAI API, Hugging Face, LangChain/LangGraph, FastAPI and Docker

You're comfortable working with data in SQL databases

You're a natural consultant: you listen, ask the right questions and see the business behind the technical problem

You're comfortable presenting to clients and explaining complex topics simply

You have strong problem-solving ability and a pragmatic, solution-oriented mindset

You have a team spirit and enjoy collaborating across multiple roles

You're autonomous, curious, and quick to learn new tools

You can communicate fluently in English and French or Dutch

Bonus points

Experience with a major cloud provider (AWS, Azure or GCP)

Familiarity with MLOps practices: CI/CD, model and data versioning (MLflow, DVC), monitoring, Kubernetes

Experience in one of our other focus domains: NLP, Computer Vision or time series

Experience with gradient boosting libraries (XGBoost, LightGBM)

Previous experience in a client-facing role

Experience contributing to proposals, pre-sales or client workshops

AI-native engineering workflows: hands-on experience with AI coding agents and AI-assisted development environments (Cursor, Claude Code, Windsurf, Copilot, etc.)

Don’t worry if you don’t tick every single box, what matters most is the right mindset and a drive to learn. If you think we’re a match, we’d love to hear from you.

Why you'll love working here

Sagacify is part of Craftzing, and together we build AI solutions that create lasting impact for our clients. You will be part of a team of enthusiasts who love to learn, continuously develop new skills and fast-track our customers' AI journey across various industries.

At Craftzing and Sagacify, you get the trust and space to do your best work - in a human-sized environment with real team spirit, flexible working and room to take ownership.