Simo Tumelius

About me

I’m a hands-on data consultant helping organizations worldwide build reliable, cost-efficient analytics environments. As a dbt Labs Consulting Partner and experienced instructor, I specialize in modern data infrastructure, dbt implementations, and creating learning experiences that empower teams to take ownership of their data.

NZXT Inc.
Dagmar
Forenom
QuickBI
Synoste | Globus Medical

See what my clients are saying about me0

Tony Senanayake
CEO
Fortify Health

Simo's has worked with us as a data engineering consultant since 2023 and it has been transformative for Fortify Health. He built a high-quality analytics pipeline that automates data flow, enabling real-time, data-driven decision-making. His pragmatism, responsiveness, and capacity-building efforts have been invaluable, and we highly recommend him.

Ilkka Keskiväli
Director of Advanced Analytics
Dagmar

Simo has been working with us since 2021 and he has been integral to developing our marketing reporting automation service, Datacron®. He has enhanced our team's skills through mentorship and his expertise, patience, and work methods are continually praised. Simo's contribution is essential to our ongoing development.

Fabian Jaehn
Chief Data Officer
Forenom

Since 2019, Simo has helped modernize our data architecture, implementing custom data pipelines, a Snowflake data warehouse, and dbt - all this while training our developers. His structured approach and adherence to best practices resulted in clean, future-proof solutions. We highly recommend Simo for his expertise and impactful work.

Simo transformed our Excel-based analytics by designing and implementing a tailored data infrastructure. He trained our team, enabling them to independently use our new automated data capabilities. This has accelerated product development and improved decision-making. We are really happy with Simo's services and will continue our collaboration.

Varun Rishi
Senior Director of Analytics, Insights & MIS
NZXT

Over the past three years, Simo helped us overcome scalability issues by implementing a structured dbt workflow and training our team. His expertise transformed our SQL processes, and his ongoing support, including developing complex data models and sharing best practices, has been invaluable. Simo's education-driven approach sets him apart from other consultants.

Services

Team Enablement & Learning Design

Equipping data teams through world-class learning experiences.
Your team deserves learning that sticks. I support organizations as a contract instructor and learning content developer; delivering clear, practical sessions and creating hands-on labs, eLearning modules, and enablement materials. If you’re building internal programs, I can help design content that drives adoption and measurable results.
Design learning for your team that sticks

dbt Consulting

Get the most out of your dbt investment.
Whether you’re starting fresh or scaling up, I help you design and optimize dbt projects that your whole team can rely on. With proven experience across industries, I ensure your dbt setup is maintainable, efficient, and future-proof.
Make dbt work for you

Data Infrastructure Consulting

Turn messy data into a reliable, cost-efficient foundation.
Get a modern data platform that scales with your business. I help you set up infrastructure, pipelines, and warehouses that keep costs under control and make trusted data available where you need it.
Build a reliable data foundation

Contact me

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Or drop me an email at simo@datamie.fi