Meet the team
Our growing team is made up of some of the brightest minds from fields including energy, engineering, IoT, software development and big data analytics.
Senior Leadership Team
CASEY
COLE
CEO
Casey Cole - CEO
Having worked for more than 20 years in low-carbon energy, Casey Cole has in-depth experience of making sustainability work in practice: technically, commercially and legally.
Casey co-founded Guru Systems in 2012 to improve the efficiency and financial performance of heat networks using Internet of Things technology. He and the rest of the Guru team are passionate champions of the sector, searching out the barriers to progress and overcoming them with cutting-edge technology that’s easy to use.
Alongside his work at Guru Systems, in 2015 Casey was invited to chair the board of Heat Trust, the stakeholder-led customer protection scheme for the growing heat network sector.
NICKY BUTTERWORTH
Chief Operations Officer
Nicky Butterworth - Chief Operations Officer
Nicky joined Guru in 2019 having previously worked in the Heat Networks Policy Team at BEIS, and before that, the Heat Networks Delivery Unit at DECC where she led the design of the scheme and administered funding rounds.
During her time at BEIS, Nicky was seconded to the Competition and Markets Authority, providing sector expertise to the team of economists and lawyers, shaping the findings of the Heat Networks Market Study.
Prior to her time at DECC and BEIS, Nicky worked at the Combined Heat and Power Association (now the Association for Decentralised Energy) where she was active in the initiation of the ADE/CIBSE Code of Practice and the Heat Customer Protection Scheme, which later became Heat Trust.
JON
CURNYN
Chief Technical Officer
Jon Curnyn - Chief Technical Officer
Jon is technology and engineering professional with over 25 years of experience in the areas og Cleantech, IoT, communications and networking, software applications and data analytics. He leads an experienced engineering team at Guru Systems.
Prior to joining Guru Systems, Jon held a number of technology and engineering leadership roles where he pioneered the development of leading edge products and solutions which form the core of many mission critical solutions deployed in government, SME and enterprise markets, and ISP backbones.
As a design engineer, Jon has considerable experience of circuit design, ASIC design, low level real-time software design, mobile applications and both front end and back end cloud applications.
Jon holds a B.Sc. B.Eng. degree from the University of Nottingham, and has a number of granted patent applications to his name.
JAMES CHATTERJEE
Chief Financial Officer
James Chattergee - Chief Financial Officer
James Chatterjee has more than ten years of experience in senior financial positions, most recently as Group Finance Director of an insurance technology company. James is Chartered Accountant who trained at Grant Thornton LLP. Before that he read Philosophy Politics and Economics at Oxford University.
Outside of work of work James serves as chairman of The Swan Project, a Bristol-based charity.
SOULLA
PAPHITIS
Sales Director
Soulla Paphitis - Sales Director
Soulla is a seasoned Business Development Manager with extensive experience in the District Energy and HVAC sectors. Currently a Sales Director at Guru Systems, she leads efforts to advance low-carbon heating solutions through data-driven technology for heat networks.
Her background includes key roles at Danfoss, where she spearheaded district energy initiatives across the UK and Ireland, and Wolseley, where she successfully managed teams and drove customer satisfaction.
Soulla is highly skilled in negotiation, business planning, key account management, and strategic sales, making her a driving force for sustainable innovation in the energy sector.
Sales and Marketing Team
ANNICK JORDAN
Sales Manager
Annick Jordan - Sales Manager
Annick has over a decade of expertise in delivering hardware and software solutions within the energy industry. As the Sales Manager at Guru Systems, she leads initiatives to support clients in adopting low-carbon heating solutions through data-driven technology for heat networks.
Annick’s background includes a strong track record in sales of smart metering and solar solutions, where she has been committed to driving sustainable innovation. Her passion lies in making a meaningful impact—enhancing customer experiences, improving resident outcomes, and contributing to environmental progress.
Before joining the energy sector, Annick managed a global customer service team in the security industry, gaining valuable leadership experience in delivering exceptional client support on an international scale.
+44 07943 776 668
SPENCER MARTIN
Sales Manager
Spencer Martin - Sales Manager
As the Sales Manager at Guru Systems, he leads initiatives to support clients in adopting low-carbon heating solutions through data-driven technology for heat networks.
For 15 years Spencer was working as a Sales Manager for the Market Leading Underfloor Heating Contractors Warmafloor and Thermofloor supplying Turnkey Solutions to Tier 1 Contractors and Developers.
In the last 5 years Spencer has been working in the Heat Networks industry for Market Leading HIU Manufacturer Evinox Energy and UK Metering. Spencer has been involved in various residential schemes providing sustainable energy efficient systems and market leading technology to developers throughout the UK and Ireland.
Spencer is highly skilled in negotiation, key account management and strategic sales.
+44 07749 498 676
TBC
Sales Manager
TBC - Sales Manager
Annick has over a decade of expertise in delivering hardware and software solutions within the energy industry. As the Sales Manager at Guru Systems, she leads initiatives to support clients in adopting low-carbon heating solutions through data-driven technology for heat networks.
Annick’s background includes a strong track record in sales of smart metering and solar solutions, where she has been committed to driving sustainable innovation. Her passion lies in making a meaningful impact—enhancing customer experiences, improving resident outcomes, and contributing to environmental progress.
Before joining the energy sector, Annick managed a global customer service team in the security industry, gaining valuable leadership experience in delivering exceptional client support on an international scale.
Client Services Team
HASAN
HUSSEYN
Client Support Executive
LYLLIANA JESSURUN
SaaS Client Relationship Manager
Lylliana Jessurun - SaaS Client Relationship Manager
Lylliana is a dedicated client success professional with over a decade of experience across the energy and tech sectors. She’s known for solving complex challenges, delivering tailored solutions, and building strong client relationships through strategic thinking and a commitment to exceeding expectations.
Originally from Florida, she traded sunshine for the vibrant hustle of London, bringing a global perspective and a warm, people first approach to her work.
Outside of work, she’s a curious and creative spirit who enjoys music, writing, dreaming up new ideas, and cheering on Arsenal.
MARCELA REIS
Client Services Executive
Marcela Reis - Client Services Executive
Product Team
CLAUDIA ANZANI
User Experience Designer
HARRY GRINT
Lead Product Manager
Harry Grint - Lead Product Manager
Prior to joining Guru, Harry worked on delivering an Asset Management platform for the fast growing Grid Scale Battery sector, enabling the transition to net zero.
Supply Chain Team
NICK BORKETT
Supply Chain Manager
DANNY HUGHES
Logistics Coordinator
Finance Team
KAREN
MURRAY
Finance Assistant
Karen Murray - Finance Assistant
Karen is a qualified bookkeeper with a background in operations management and project coordination within the creative industries. Alongside her part-time role in the finance team at Guru Systems, she also works as a Bookkeeper for an independent music booking agency.
Outside of work, Karen enjoys exploring London's galleries and museums, pursuing her own drawing and illustration work, and is a keen runner. Her other interests include music, travel, cooking, and spending time with her daughter.
DANIEL THOMPSON
Assistant Management Accountant
Site Delivery Team
WESLEY
TALBOT
Head of Site Delivery
ARON
ZICS
Project Manager
ROB
FORBES
Project Manager
MARK CARMICHAEL
Junior Commissioning Engineer
Technology Team
GIEDRIUS SLEGERIS
Software Engineer
JAMES BENSON
Senior DevOps Engineer & Cloud Architect
JAMES GARNER
Technical Lead
MOSES MUTINA
Software Team Lead
NILTON TREVIZAN
Firmware Team Lead
OLIVER SAUNDERS
Technical Lead
MAX MELLOR
Intermediate Full Stack Software Engineer
Max Mellor - Intermediate Full Stack Software Engineer
Outside of work, Max enjoys various sports including running, tennis and going to the gym. He also really enjoys music and even dabbles in some music production
FRANCESCA SARGENT
Senior Full Stack Software Engineer
Francesca Sargent- Senior Full Stack Software Engineer
Outside of work, Francesca enjoys being outside, being creative, and hanging out with her pomeranians.