About us

Diffblue is changing the way software is developed using Artificial Intelligence (AI).

Diffblue Cover, the company’s first product, automatically generates tests for Java code to enable development teams to deliver higher quality software, faster. Diffblue’s technology is developed by our team of leading experts in software verification and synthesis. Our customers include Goldman Sachs and Amazon Web Services.

Diffblue spun out of the University of Oxford in 2016 and received the largest AI Series A funding in Europe in 2017. We are backed by Oxford Sciences Innovation and Goldman Sachs, and headquartered in Oxford, UK.

To learn more about what we do, visit our Products page.


Leadership team

Our leadership are passionate about making developers more productive and their companies more successful using AI for Code.


Mathew Lodge


Mathew has over twenty-five years of experience in the software industry in developer, product and marketing roles. Before joining Diffblue, his titles included SVP at Anaconda and Vice President of Cloud Services at VMWare. In each role, his focus is on building and marketing products that customers love.


Daniel Kroening

Co-founder & Chief Scientist

Daniel is Chief Scientist and co-founder of Diffblue.  He has 15 years experience building software verification tools and is the primary author of the CBMC verification framework.  Daniel is also a Professor of Computer Science at University of Oxford.


Peter Schrammel

Co-founder & CTO

Peter is CTO and co-founder of Diffblue.  He has significant experience as a software project lead in the embedded systems industry and a strong track record in program analysis. Prior to Diffblue he was an Assistant Professor of Computer Science at the University of Sussex.


Jane Silber


Jane is Executive Chair of Diffblue. She brings valuable executive experience in growing software companies that developers love. She was previously CEO of Canonical and is currently a non-executive director at Canonical and The Sensible Code Company.


Jeremy Perlman

Chief Revenue Officer

Jeremy is CRO of Diffblue.  He is passionate about building commercial success in early stage tech companies.  Prior to Diffblue he led go-to-market activities for Ribbit (acquired by BT), Apigee (IPO, Acquired by Google) and Trifacta.


Mike Mulford


Mike is CFO of Diffblue. Mike brings 20 years of financial experience in CFO/Finance Director roles ranging from venture capital backed start-ups through, private equity backed businesses to listed enterprises.


Anne-Kari Mannsåker

Head of Product

AK is the Head of Product at Diffblue. Prior to joining Diffblue, AK led the engineering and product development efforts of autonomous software tools, robots, and ROVs in AKOFS (acquired by Aker Solutions) and ABB. She also invested in emerging technologies at Balderton Capital.

Andy 3.png

Andy Piper

VP of Engineering

Andy is the VP of Engineering at Diffblue. Previously the Head of Product Engineering at CBRE and the CTO of Push Technology Limited, Andy has more than 20 years of combined engineering and technology leadership experience. He holds a PhD in computer science from the University of Cambridge.