Senior Data Engineer Consultant

To support our growth, we are recruiting Senior Consultants specializing in Data Engineering solutions. You will lead client engagements, co-design data engineering solutions through close collaboration with clients, manage stakeholders, and ensure impactful project delivery from strategy through execution.

Company description

Sia is a next-generation, global management consulting group born digital, augmented by data, enhanced by creativity, and driven by responsibility. We partner with clients to resolve challenges and capitalize on opportunities.

Responsibilities

• Building robust, scalable data pipelines and architectures to enable efficient ingestion, processing, and delivery of large volumes of structured and unstructured data.
• Designing and implementing data solutions leveraging modern cloud platforms (e.g., AWS, Azure, GCP) and distributed computing frameworks (e.g., Spark, Kafka).
• Developing logical and physical data models and optimizing database solutions for various data types and workloads, including relational, NoSQL, time-series, and graph databases.
• Implementing best practices for batch, streaming, and real-time data integration, adapting to structured, semi-structured, and unstructured data sources.
• Enabling continuous integration and deployment of data services and infrastructure, using modern DevOps tooling to ensure reliability, versioning, and automation in data workflows.

Within Sia itself you will

• Develop and enhance our Data Engineering offerings through internal training sessions, working groups, and internal/external publications.
• Represent Sia at professional events, contributing actively to thought leadership initiatives (articles, white papers, webinars).
• Drive business development by crafting compelling proposals, identifying new collaboration opportunities, and fostering long-term client relationships.
• Manage client engagements, serving as a trusted advisor and subject matter expert to middle and senior-level management.
• Supervise and mentor junior to medior consultants, guiding their professional growth, reviewing deliverables, and facilitating the development of technical and interpersonal skills.

Your profile

• Analytical thinker with a structured and proactive approach.
• Experienced communicator capable of clearly articulating complex technical ideas to varied audiences.
• Effective stakeholder manager, comfortable guiding teams through project delivery.
• Demonstrated ability to mentor colleagues and facilitate professional development.

Qualifications

• Completed Master's degree in Data Science, Econometrics, Applied Mathematics, Computer Science, (Energy) Engineering, or a related technical field involving substantial programming.
• The specific stack that you will work with will depend on the client but, as an indication, we commonly work with Databricks, Snowflake and Azure.
• 3-6 years of relevant professional experience (or equivalent academic research).
• Strong analytical mindset with systematic problem-solving abilities.
• You have a strong interest in data and AI-related topics, the ability to quickly build expertise in these areas, and you’re excited about helping our clients seize the opportunities they offer.
• A fast learner who demonstrates strong communication skills, adaptability, and entrepreneurial drive.
• Fluency in English, with excellent communication and presentation abilities. Dutch or French fluency is a must. German is a nice plus!
• Proven interest in Data Engineering, and relevant sectors such as Energy and Finance.

What do we offer?

• Competitive salary package, including annual salary increase, bonuses, and flexible mobility options (company car or personalized mobility plan).
• Tailored training and development opportunities to position you as an expert in your field.
• Flexible working arrangements (office, home, client sites) and international project exposure.
• Collaborative global environment fostering professional growth and knowledge sharing.

Additional information

We are unable to provide a work permit for this position