Environment & Cleantech

Skilled professionals dedicated to innovative technologies and practices that reduce environmental impact and promote sustainability

Namrata Agrawal

Namrata Agrawal

Namrata Agrawal is a technology professional and speaker exploring the intersection of AI, sustainability, and digital innovation. She is passionate about how emerging technologies can solve real-world challenges and create meaningful business and societal impact. Her speaking interests include AI, digital transformation, sustainability, accessibility, emerging technologies, and responsible innovation.

Namrata Agrawal is a technology professional and speaker exploring the intersection of AI, sustainability, and digital innovation. She is passionate about how emerging technologies can solve real-world challenges and create meaningful business and so... Show more

Matt "Kelly" Williams

Matt "Kelly" Williams

Waste is a bug.

Matt “Kelly” Williams is the founder of Making Software Greener and CEO of the Sustainable IT Manifesto Foundation. He helps engineers see how architecture, DevOps, and AI shape performance, cost, and sustainability—and why they’re really the same problem.

With over three decades in IT, Kelly has worked across DevOps, cloud computing, and software architecture. He serves on the advisory board of the Green Computing Foundation and speaks internationally about sustainable software, developer agency, and the hidden inefficiencies that shape modern systems.

He has always wanted to be a Renaissance person; perhaps one day he will be. In the meantime, he explores sustainable computing, photography, tabletop game design, weaving, cooking, and wandering the mountains near Loveland, Colorado.

Systems remember every decision we make.

Waste is a bug. Matt “Kelly” Williams is the founder of Making Software Greener and CEO of the Sustainable IT Manifesto Foundation. He helps engineers see how architecture, DevOps, and AI shape performance, cost, and sustainability—and why they’re... Show more

Ines Akrap

Ines Akrap

Ines Akrap is a frontend engineer, a Google Developer Expert in Web Performance, and co-chair of the W3C Sustainable Web Interest Group, the group writing the guidelines that define what sustainable means for the web.

Her entry point wasn't environmental activism. It was a curiosity about a CO2 number tied to a JavaScript bundle and one question she couldn't stop asking: can we get rid of this? What followed was years of research, speaking across Europe, and co-authoring Building the Sustainable Web (Apress, 2026), a practical guide for web development teams who want to understand the full cost of what they build.

Ines Akrap is a frontend engineer, a Google Developer Expert in Web Performance, and co-chair of the W3C Sustainable Web Interest Group, the group writing the guidelines that define what sustainable means for the web. Her entry point wasn't enviro... Show more

Tom Overton

Tom Overton

A 30-year veteran data guy with experience in enterprise databases, platform migration, application monitoring, audit and compliance, and document automation in environmental, government, telecom, manufacturing and healthcare industries. When not writing queries, I enjoy mentoring, coaching, woodworking, and hiking in our National Parks.

A 30-year veteran data guy with experience in enterprise databases, platform migration, application monitoring, audit and compliance, and document automation in environmental, government, telecom, manufacturing and healthcare industries. When not wr... Show more

Alain Delachaux

Alain Delachaux

Je suis tombé dans la marmite Agile en 2018, après 17 ans de vie dans l'IT et la conception de produits.
D'abord Product Owner, puis Scrum Master. Aujourd’hui, j’accompagne les équipes dans leur découverte de l’Agilité.
Je me considère comme agnostique en matière d’Agilité. Pour moi les frameworks sont des outils utiles, à condition d’être bien compris et utilisés avec discernement.
Mon objectif est de rester fidèle au Manifeste Agile et à son esprit, tout en étant attentif aux impacts humains, organisationnels et environnementaux — notamment en promouvant un numérique responsable.

Je suis tombé dans la marmite Agile en 2018, après 17 ans de vie dans l'IT et la conception de produits. D'abord Product Owner, puis Scrum Master. Aujourd’hui, j’accompagne les équipes dans leur découverte de l’Agilité. Je me considère comme agnost... Show more

Valeria Salis

Valeria Salis

As a Green Software Advocate and Tech Sustainability Consultant, my mission is helping companies and professionals build more sustainable, low-carbon digital solutions. Since discovering technology's environmental impact in early 2023, I've become a recognized speaker at major tech conferences and co-founded Green Software Italia community. I believe in responsible technology that creates positive impact for both businesses and the environment.

As a Green Software Advocate and Tech Sustainability Consultant, my mission is helping companies and professionals build more sustainable, low-carbon digital solutions. Since discovering technology's environmental impact in early 2023, I've become a ... Show more

Michele Giacobazzi

Michele Giacobazzi

Michele is CTO and founder at WellD, where he specializes in building scalable solutions for complex industrial challenges. With a focus on cloud-native architectures and data persistence, he has been instrumental in developing SPARklE, bridging the gap between renewable energy production and intelligent distribution. Passionate about Java, automation, and DevOps and a member of the Voxxed Days Ticino programme committee, he believes clean code is the first step toward a cleaner planet.

Michele is CTO and founder at WellD, where he specializes in building scalable solutions for complex industrial challenges. With a focus on cloud-native architectures and data persistence, he has been instrumental in developing SPARklE, bridging the ... Show more

Niki Manoledaki

Niki Manoledaki

Niki Manoledaki is a Staff Software Engineer currently on the Platform Engineering team at Grafana Labs where she monitors carbon and cost at scale. She is a cloud sustainability advocate, keynote speaker, and community organizer. She contributes to open source software as a maintainer of the CNCF project Kepler and a Tech Lead of the Operational Resilience Technical Advisory Group (TAG). She is recognized as a CNCF Ambassador and Green Software Champion.

Niki Manoledaki is a Staff Software Engineer currently on the Platform Engineering team at Grafana Labs where she monitors carbon and cost at scale. She is a cloud sustainability advocate, keynote speaker, and community organizer. She contributes to ... Show more

Samah Alafeef

Samah Alafeef

Samah Alafeef

Founder and CEO of Metanoia Training and Consulting

Project Management Professional and Regional Officer of the International Federation of Global and Green Information and Communication Technology (IFGICT).
Samah Alafeef a computer engineer brought a broad range of technical and data management skills to her extensive work experience. Samah holds a master's degree in Project Management Engineering and a diploma in Humanitarian Logistics and Supply chain. The combination of managerial and technical skills she has in both the Humanitarian and Commercial sectors enabled her to serve as a consultant in various aspects related to management and technology. Samah is a PMP® certified, Risk RMP ® certified, Agile ACP certified, certified Microsoft innovative educator, and certified green IT professional. She is coaching people and organizations to develop their professional images, being agile, and jump to a higher professional level.

Samah Alafeef Founder and CEO of Metanoia Training and Consulting Project Management Professional and Regional Officer of the International Federation of Global and Green Information and Communication Technology (IFGICT). Samah Alafeef a compu... Show more

Francesco Fullone

Francesco Fullone

I'm Francesco Fullone, a business designer, consultant, and mentor and investor in technology companies focusing on sustainability or social impact.

I help companies (in any stage) to better define their business propositions to create options to validate them, and I advise them to organize themselves better to reach their goals.

I founded, and I contribute to Apropos, a company that helps communities, companies, and local groups organize events and workshops. If you attended an international conference about web technologies in Italy, you met me as a speaker, organizer, or attendee.

I founded companies such as Digitiamo to create NLP and AI-related products, Carma, to work on the next food technologies. In the past, Ideato, where I contributed to its growth for more than ten years, creating an innovative and quality reference for the development agencies in Italy.

I'm the president of the GrUSP, a no-profit association that encourages best practices in web development since 2002.

I'm Francesco Fullone, a business designer, consultant, and mentor and investor in technology companies focusing on sustainability or social impact. I help companies (in any stage) to better define their business propositions to create options to ... Show more

Saravanan K Nagarajan

Saravanan K Nagarajan

Saravanan is an Architect working at Rabobank, Netherlands and one of the leads of the Architecture, SAP and Sustainability communities.

He has more than 25 years of experience in diverse IT and business roles with different banks across the world.

His passion is in Architecture, ERP solutions and Sustainable IT.

Saravanan is an Architect working at Rabobank, Netherlands and one of the leads of the Architecture, SAP and Sustainability communities. He has more than 25 years of experience in diverse IT and business roles with different banks across the world... Show more

Olivier Bierlaire

Olivier Bierlaire

Ex-first dev team of Canva, I've worked at Elastic, and now focused on founding in sustainability in IT. With Rebase.green we focus on reducing energy waste in software industry. Based in Nantes, France.

Ex-first dev team of Canva, I've worked at Elastic, and now focused on founding in sustainability in IT. With Rebase.green we focus on reducing energy waste in software industry. Based in Nantes, France. Show more

Kristina Devochko

Kristina Devochko

Kristina Devochko is a platform engineer, tech content creator, speaker and tech community contributor based in Norway. She focuses on all things cloud native, Kubernetes, cloud security and green tech.

Kristina Devochko is a platform engineer, tech content creator, speaker and tech community contributor based in Norway. She focuses on all things cloud native, Kubernetes, cloud security and green tech. Show more

Claire Kemp

Claire Kemp

Claire Kemp is a Senior Product Manager with experience building technology products across energy, payments and SaaS. From launching smart EV charging propositions to building payments capabilities for international energy retailers, she has spent much of her career solving complex problems with cross-functional product and engineering teams.

More recently, Claire has been experimenting with how generative AI can support not just the work we do, but the people doing it.

Claire Kemp is a Senior Product Manager with experience building technology products across energy, payments and SaaS. From launching smart EV charging propositions to building payments capabilities for international energy retailers, she has spent m... Show more

Frank Lyaruu

Frank Lyaruu

Architect and software generalist, from layers of abstraction in the clouds to soldering wires, and everything in between.

Rustacian. Java veteran. Sustainable computing advocate. Web assembly enthousiast.

Architect and software generalist, from layers of abstraction in the clouds to soldering wires, and everything in between. Rustacian. Java veteran. Sustainable computing advocate. Web assembly enthousiast. Show more

D. Beth Griffith

D. Beth Griffith

Beth Griffith, BAP, GIP, HIC, LEED, is the founder of Renewable Renegades and ANEC Ventures, where she helps mission-driven organizations responsibly adopt AI, automation, and clean energy strategies that strengthen people, systems, and communities.

Working at the intersection of responsible AI, workforce development, renewable energy, and inclusive business growth, Beth brings a practical, human-centered lens to emerging technology. Her work focuses on helping governments, nonprofits, NGOs, public sector teams, and small businesses build AI capacity without losing sight of trust, accountability, and human dignity.

Beth brings a people-first perspective on agentic AI: how organizations can design AI agents with the right guardrails, increase human capital through AI capital, and build systems that elevate workers, leaders, and the communities they serve.

Beth Griffith, BAP, GIP, HIC, LEED, is the founder of Renewable Renegades and ANEC Ventures, where she helps mission-driven organizations responsibly adopt AI, automation, and clean energy strategies that strengthen people, systems, and communities. ... Show more

Tarek Hussein

Tarek Hussein

Dr. Tarek Hussein is a pharmacist-entrepreneur and clinical leader dedicated to building healthcare systems that are faster, safer, and measurably more impactful. With a career spanning acute hospital care, community pharmacy, and digital health, Tarek speaks at the intersection of operational excellence and social health equity.

Speaking & Consulting Expertise:
• Operational Excellence (Lean & Agile): As a Lean Six Sigma Green Belt and ICP-ACC Agile Coach, Tarek helps healthcare organizations move beyond traditional silos. He shares frameworks for designing evidence-based systems that reduce waste, improve safety, and empower interprofessional teams.
• Sustainability & Climate Resilience: As a Climate Health Fellow (Harvard Medical School/CHA) and Co-Chair of the Sustainable Prescribing Working Group, Tarek is a leading voice on greening the healthcare supply chain. He provides actionable insights on sustainable prescribing and climate-resilient practice.
• Leadership & Innovation: A Chartered Manager and 2x digital health founder, Tarek speaks on the "builder’s mindset" required to scale innovation. He shares lessons from founding SociaLink Rx (Canada’s first precision social prescribing platform) and MedaKi (e-commerce infrastructure for the pharmacy industry).
• Social Prescribing: Tarek is a published researcher and pioneer in shifting the clinical focus from the "prescription as end-point" to the "prescription as starting point," integrating social determinants of health into standard primary care.
Professional Background:
Tarek is currently a Clinical Pharmacist at Brockville General Hospital and an Adjunct Professor at the University of Ottawa’s Faculty of Medicine. He previously spent 13 years building Weller Pharmacy into Ontario’s first sustainability-certified independent practice and a Living Wage Champion.

Education & Credentials: Tarek holds a BPharm, a PharmD, and an MBA from IE Business School. He is currently pursuing an MSc in Pharmaceutical Sciences at the University of Toronto. His leadership credentials include being a Chartered Manager (C.Mgr), a Distinguished Toastmaster (DTM), and a former President of the Board for KEYS Employment & Newcomer Services.

Engagement Style: Tarek combines the rigour of a clinician with the agility of a tech founder. He is known for translating complex systemic challenges—whether they be "leadership debt" or "environmental footprint"—into practical, high-performance strategies for health system leaders, policymakers, and frontline practitioners.**

Dr. Tarek Hussein is a pharmacist-entrepreneur and clinical leader dedicated to building healthcare systems that are faster, safer, and measurably more impactful. With a career spanning acute hospital care, community pharmacy, and digital health, Tar... Show more

Michelle Nlend

Michelle Nlend

Experienced professional with expertise in corporate and NGO accounting, human resource management, procurement.

Recognized as a specialist in human rights and climate finance, with a strong commitment to promoting sustainable development and social justice.

Experienced professional with expertise in corporate and NGO accounting, human resource management, procurement. Recognized as a specialist in human rights and climate finance, with a strong commitment to promoting sustainable development and soci... Show more

Rosheen Naeem

Rosheen Naeem

I am a Software Engineer at Miro and a community member at Open Climate Fix. I completed the Erasmus Mundus Master’s in Software Engineering for the Green Deal (SE4GD), a joint program across Vrije Universiteit Amsterdam, LUT University, and Università degli Studi dell’Aquila focused on building software systems for environmental sustainability and the energy transition.

Through Google Summer of Code, I contributed to Open Climate Fix, where I worked on transformer-based solar PV forecasting and data pipeline engineering for renewable energy applications. My broader open-source experience also includes contributions through Google Season of Docs with ArviZ and an Outreachy internship with Open Food Facts.

I am a Software Engineer at Miro and a community member at Open Climate Fix. I completed the Erasmus Mundus Master’s in Software Engineering for the Green Deal (SE4GD), a joint program across Vrije Universiteit Amsterdam, LUT University, and Universi... Show more

Stuart Clark

Stuart Clark

As a Senior Developer Advocate at Spotify, Stuart is interested in how the software we build — and the AI we use — affects our planet. He has shared his perspective on stages ranging from TEDx to DevOps conferences worldwide, aiming to provide fellow developers with the practical knowledge needed to build a more sustainable future.

As a Senior Developer Advocate at Spotify, Stuart is interested in how the software we build — and the AI we use — affects our planet. He has shared his perspective on stages ranging from TEDx to DevOps conferences worldwide, aiming to provide fellow... Show more

Leanora Horne

Leanora Horne

Senior Digital Product Leader dedicated to building ecosystems that bridge the gap between industrial assets and environmental impact. With eight years of experience across Not for Profit, Startups and Corporate, specialising in digital products, innovative IoT, digital twins and digital transformation. Dedicating my time at work to building a positive impact on climate change through a variety of digital products and services. A firm believer that innovation requires personal resilience, I openly share my professional expertise alongside the ups and downs of my personal health. Helping to de-stigmatise mental health and share burnout recovery tips in high-pressure industries.

Senior Digital Product Leader dedicated to building ecosystems that bridge the gap between industrial assets and environmental impact. With eight years of experience across Not for Profit, Startups and Corporate, specialising in digital products, inn... Show more

Michael Reichenbach

Michael Reichenbach

As a Platform Engineer at 1KOMMA5°, Michael builds the critical developer platform behind Europe's largest virtual power plant. His work accelerates the development and deployment of software that currently manages over 50,000 decentralized energy systems and executes millions of real-time optimization decisions every day to decarbonize the grid. With over 15 years of experience, he drives the cloud-native platform strategy that optimizes the entire software lifecycle, empowering product teams to focus exclusively on innovation and ensuring the platform scales as fast as the renewable energy market demands.

As a Platform Engineer at 1KOMMA5°, Michael builds the critical developer platform behind Europe's largest virtual power plant. His work accelerates the development and deployment of software that currently manages over 50,000 decentralized energy sy... Show more

Gwénaëlle Hirrien

Gwénaëlle Hirrien

After an atypical career in law, the arts and video games, I chose to retrain in development. My desire to promote continuous improvement and communication led me to become a Scrum Master, Agile Coach, Systemic Professional Coach and Responsible Digital Lead. As a professional facilitator for the Fresque du Climat et du Numérique, I am constantly learning about the ecological transition, responsible digital technologies and sociology. Involved in Time For The Planet and supporting women in the digital world. As a theater practitioner, I find it a way of creatively exploring and communicating. What drives me: helping companies and individuals to integrate climate and social issues into their practices.

After an atypical career in law, the arts and video games, I chose to retrain in development. My desire to promote continuous improvement and communication led me to become a Scrum Master, Agile Coach, Systemic Professional Coach and Responsible Digi... Show more

Dennis Adolfi

Dennis Adolfi

With a strong passion for Sustainable Technology and Agentic AI, Dennis has been an active member of the Microsoft & Umbraco community well over a decade, writing hundreds of articles, tutorials, speaking at conferences, meetups, contributing to open source projects, youtube videos, podcasts, forums etc. for which he has been awarded 4x Microsoft MVP (Azure AI Foundry, Trustworthy AI and Developer Technologies), 7x Umbraco MVP, Top 3 Open Source contributor in Sweden 2024 and Top 5 Developers in Sweden 2023.

With a strong passion for Sustainable Technology and Agentic AI, Dennis has been an active member of the Microsoft & Umbraco community well over a decade, writing hundreds of articles, tutorials, speaking at conferences, meetups, contributing to open... Show more

Israel Olatunji Tijani

Israel Olatunji Tijani

Israel Olatunji Tijani is a Data Scientist, ICT4D specialist, and Head of AI Policy and Research at ChatVE, a civic-technology think tank operating at the intersection of artificial intelligence, internet governance, emerging technologies, and climate change. As a data scientist and AI audit specialist with five years of experience building and deploying custom AI solutions, he works at the intersection of applied AI, public interest technology, research, and African socio-cultural contexts. Tijani bridges high-level ethical frameworks with practical, human-rights-centered technical infrastructure across the Global South. His contribution towards the advancement of transformational AI development in Africa earned him a nomination in the AI for Social Good category during the Ghana AI Summit and Awards in 2025

A 2022 fellow of the United States Institute of Peace (USIP), Tijani's scholarly contributions are internationally recognized. He presented his landmark research paper, "Who Governs Peace? The Algorithm that Feeds or the Hand that Scrolls," at the Silicon Valley Peace Conference 2026 in California, examining AI’s role in peace tech through proactive conflict de-escalation and social listening. He has also authored IEEE-published work, “Ethics-by-Design for AI: Navigating the Double-Edged Scalpel”, a paper from the International Conference on Data Mining in Washington, D.C., in 2025. Furthermore, his commitment to advancing global information integrity earned him official recognition from the Princeton School of Public and International Affairs in January 2025 for co-creating transparent, responsible research tools.

Tijani holds professional credentials spanning Microsoft, Google, Cisco, and EC-Council. He further expanded his command over frontier technologies by earning the BlueDot Impact Future of AI Professional Certification in October 2026, which examines paths toward AGI and their societal implications. Through technical execution, empirical research, and multi-stakeholder policy advocacy, Tijani continues to shape global dialogues on responsible AI deployment, digital sovereignty, climate action, and peacebuilding.

Tijani is an alumnus of Lagos Business School, EDC, Pan-Atlantic University, and the West Africa School on Internet Governance (WASIG).

Israel Olatunji Tijani is a Data Scientist, ICT4D specialist, and Head of AI Policy and Research at ChatVE, a civic-technology think tank operating at the intersection of artificial intelligence, internet governance, emerging technologies, and climat... Show more

Guillaume Wolf

Guillaume Wolf

I am highly involved in raising awareness about environmental issues related to digital usage.
- I lead numerous citizen workshops such as The Digital Collage du Numérique and the Battle of the Tech
- I speak at events and conferences (Nantes Digital Week, Paris Web, etc.).
- I am actively involved in collectives like Nantes Numérique Responsable , GreenIT and The Green Compagnon
I am certified to conduct Life Cycle Assessments (LCAs) , I am a trainer for the Digital Collage and I have been recognized as a CSR Ambassador by Nantes Métropôle.

I am highly involved in raising awareness about environmental issues related to digital usage. - I lead numerous citizen workshops such as The Digital Collage du Numérique and the Battle of the Tech - I speak at events and conferences (Nantes Digit... Show more

Nicolas Guillot

Nicolas Guillot

Hi! I’m Nicolas, a developer with over 25 years of experience, now working as a freelance mobile app developer.

My journey has taken me from programming MS-DOS games to building electronic test systems for the oil industry, before transitioning to mobile development in 2017.

Everything changed during an eco-volunteering mission in French Polynesia, where I monitored sea turtles. This experience inspired *“We Spot Turtles!”*, a side project that has since become one of my main activities as a freelancer.

In 2022, an unexpected encounter with an Australian helped propel the project onto the international stage, eventually leading to it being featured by Google in a global campaign.

Today, I build this solution using Flutter, co-organize the Flutter Nantes meetup, and aim to expand the impact of this application dedicated to sea turtle conservation worldwide.

Hi! I’m Nicolas, a developer with over 25 years of experience, now working as a freelance mobile app developer. My journey has taken me from programming MS-DOS games to building electronic test systems for the oil industry, before transitioning to... Show more

Alexander Karan

Alexander Karan

A full-stack engineer with over twelve years of experience, Alexander currently leads the FinOps Software and Tooling team, working across Atlassian to reduce cloud spend through performance-focused improvements and developer tooling.

Alexander previously ran an app development agency, leading teams across Australia and Europe in web, backend, and native mobile development. Working closely with clients inspired him to co-found a startup that helped schools and businesses track and reduce their carbon footprint, delivering both real climate impact and significant cost savings.

Outside his day job, Alexander is a core member of the E18E community, helping to clean up and speed up the JavaScript ecosystem. He also has a strong passion for API design and runs the APIs You Won’t Hate newsletter and OpenAPI.tools.

Alexander’s strengths are systems architecture and communicating complicated technical concepts to everyday people. Having helped scale technology at numerous startups and worked at enterprise scale, he understands the importance of delivering excellent user experiences and robust systems.

A full-stack engineer with over twelve years of experience, Alexander currently leads the FinOps Software and Tooling team, working across Atlassian to reduce cloud spend through performance-focused improvements and developer tooling. Alexander pr... Show more

Himashi Meththasena

Himashi Meththasena

I am a Senior Software Engineer, cloud architect, and the AI-first technical founder of Star Lab Systems and Raggedy Bag (raggedybag.com). My expertise lies at the intersection of modern cloud infrastructure, advanced AI innovation, and scalable enterprise solutions.

Throughout my career, I have focused on designing highly resilient, event-driven cloud architectures and distributed backend systems capable of handling massive data concurrency. Currently, my work centers on leveraging cloud ecosystems and cutting-edge AI technologies—such as intelligent workflows, LLM orchestration, and the Model Context Protocol (MCP)—to power open-beta green-tech frameworks. As an active tech ecosystem contributor, I love giving back to the developer community by sharing production-ready, code-first blueprints that show how to build scalable cloud infrastructure and deploy practical AI solutions to solve real-world sector challenges.

I am a Senior Software Engineer, cloud architect, and the AI-first technical founder of Star Lab Systems and Raggedy Bag (raggedybag.com). My expertise lies at the intersection of modern cloud infrastructure, advanced AI innovation, and scalable ente... Show more

Toby B

Toby B

Toby Brandenburg - Problem Solver.
Son of Adelaide based father-son founding team of the Electric Air Shipping project.
Creator of the VS/VE maths and design framework for cargo airships. Designer of The Sunship, the world's first sustainable, ultra-heavy lift cargo airship.
Vibe-coder of the EAS Fleet Calculator software.
Former music tutor, creative and performing musician, also former youth worker in remote outback Australian communities.

Toby Brandenburg - Problem Solver. Son of Adelaide based father-son founding team of the Electric Air Shipping project. Creator of the VS/VE maths and design framework for cargo airships. Designer of The Sunship, the world's first sustainable, ultr... Show more

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