
Our story.
Semantic Partners was formed in London in 2021, in response to the growing demand for Knowledge Graph and Semantic technology skills.
We have experts located in the UK, Austria, Germany, France, Greece, Malta, Italy and the USA. Between us, we speak ten languages.
We implement knowledge graphs.
We help you move to a data-centric model; we help you break free of rigidity, embrace knowledge and get you ready for AI.
Our founders are all experienced Principal Consultant level specialists in the Semantic Engineering and Knowledge Graph space. We have taken Knowledge Graph implementations from concept phase into production, across multiple industries, from finance to pharmaceutical, to engineering.
Our Philosophy
Meaning before mechanics.
Technology choices follow from well-defined conceptual models - never the other way around.
Governance is not optional.
Every ontology we build includes evolution pathways, ownership models, and quality frameworks.
Semantics is a product.
We design for continuous refinement. An ontology that can't evolve with the business is already technical debt.
Meet the partners

Dan Collier
Founding Partner
Founding Partner responsible for client and partner relationships, business strategy, sales, and solutioning. Over 20 years in the Data/AI and services space.

John Placek
Founding Partner
Founding Partner with an extensive software engineering background across semantic technologies, banking, and pharma. Nearly 20 years of senior business experience.
What our clients say
“Most partnerships move slowly because you spend the first six months explaining how the technology works. With Semantic Partners, that phase did not exist. Their knowledge graph expertise meant they understood what Squirro does and why it matters before the first customer conversation. That changes the quality of the work they bring.”
Dorian Selz
CEO
Squirro
“As a Partner Sales Director of Graphwise, I have worked with Semantic Partners on multiple customer use cases. Semantic Partners are a Graphwise trusted consulting and implementation partner globally. They are agile, hands-on, knowledgeable, strategic, efficient, and effective - everything an AI & Knowledge Graph product vendor can expect from a professional services partner! Semantic Partners can be summarized as "Everything AI & Knowledge Graph"”
Ivan Antrov
Partner Sales Director
Graphwise
“This has been the best collaboration with an external services partner we have ever had.”
Jakob Robertsson
Manager, Continuous Integration & Information Management IT
Scania CV AB
“Semantic Partners combines deep knowledge graph expertise with a persistent drive to solve even the hardest problems!”
Boris Shalumov
Director Strategic Solutions
Siemens
“Semantic Partners accelerated our delivery and helped us create our Semantic Layer through their deep expertise in knowledge graphs. They were a highly effective partner throughout.”
Natasa Varytimou
Head of Data Architecture & UBS Ontologies, EDMS | Executive Director
UBS
Ready to build your
semantic foundation?
Let's start with a conversation about your data, your AI ambitions, and where structured meaning can make the biggest impact.
Book a Strategy Call








