We help companies build & scale a more ethical AI
At Sigma Group, we have one shared purpose: supporting innovative
businesses as they bring cutting-edge projects to life.
Sigma AI
Data annotation services for generative AI & LLMs
Sigma Cognition
Custom AI solutions with a data-centric approach
Sigma Corporate Solutions
Tax planning & financial services for every stage of your business
ABOUT THE SIGMA GROUP
Sigma AI, Sigma Cognition and Sigma Corporate Solutions blend
diversity, subject-matter expertise and out-of-the-box thinking to
support businesses as they build better AI.
We serve our global clients from our US, UK and Spain offices.
Sigma AI
Data annotation services for generative AI & LLMs
Sigma AI is a global training data collection, preparation, and annotation services company focused on providing the highest quality training data at scale with a human touch.
Our strong and skilled team of annotators is prepared to solve the complex data annotation challenges posed by GenAI.
Sigma Corporate Solutions
Tax planning & financial services for every stage of your business
Sigma Corporate Solutions supports businesses from creation to expansion, providing finance, accounting, and tax planning services.
We work with over 100 clients in Spain, Europe, and the United States, supporting their financial needs and driving sustainable business growth.
Sigma Cognition
Custom AI solutions with a data-centric approach
Sigma Cognition supports companies throughout the entire process of designing, building, and implementing AI and ML solutions.
We help businesses evaluate new AI initiatives, build proofs-of-concept, and deliver end-to-end AI models with a data-centric approach.
VALUES OF THE SIGMA GROUP
Sigma’s core values are shared across our companies, the way we design
our processes, our relationships with clients and our impact on the world.
Human-centric
Humans are at the heart of everything we do — from our inclusive teams to customized processes. We aim to build businesses and AI solutions that make human lives better.
Challenge lovers
We are experts at staffing the right people & finding the best approach to solve a problem. We’re keen to grow & learn new things along the way.
Empathetic
Our best ideas come from cultivating a curious mindset, and actively listening and understanding multiple perspectives.
Integrity no matter what
We are committed to honesty, accountability, and respect for fundamental human values. Our work ethic is reflected in our processes and approach to data and AI.
Inclusive & sustainable
We build teams, tech, and business practices that benefit people and the planet. Diverse teams where everyone feels included lead to more impactful, sustainable results.
STORY OF SIGMA
Each company in the Sigma Group has a unique focus, but all are driven
by the same passion: to support innovative businesses building the next
generation of AI.
2002
Born in 2002, Sigma Corporate Solutions (formerly Tax Planning) was the cornerstone of the group and blazed a trail for powering the financial back office services for growing businesses.
Founded by the experienced tax and accounting consultant Nuria Gómez, the company now works with hundreds of clients in Europe and the United States, finding the best financial solutions for every business stage — from creation to expansion.
2008
In 2008, Daniel Tapias — an early AI researcher in the speech recognition & natural language processing fields — partnered with Nuria Gómez to found Sigma AI.
Grounded in the idea that AI can serve people’s lives better when it’s built upon high-quality training data, Sigma AI has evolved into a leading data annotation company. Since the beginning, Sigma AI recognized the importance of humans-in-the-loop for creating balanced, representative, and bias-free datasets.
2018
In 2018, Daniel and Nuria founded Sigma Cognition, a company that leans on decades of AI expertise to provide custom AI solutions with a data-centric approach.
Sigma Cognition works with leading companies, research teams, and public institutions in developing new and ambitious AI applications.
Present
The Sigma Group has locations in Madrid, London, and Miami. However, our talented multicultural workforce spans five continents and covers 500+ languages.
As GenAI poses new challenges and shapes new ways of building and thinking about AI, we’re eager to see where our journey takes us.
