Our leadership team combines experience in information technology, AI, automation and semiconductors with business strategy and executive leadership. We are a global team, experienced in working across disciplines and borders. We draw on a broad network of associates, partners and freelancers to provide the expertise your project needs. Our teams work on site, nearshore, offshore or remotely, giving you flexible, cost-effective access to specialist skills. We have teams in place across the United States and Europe, including Portugal, France, Germany, Greece, and Romania.
Warren WartellCo-founder, SVP & Chief Strategist
Warren is SemiSphere’s Chief Strategist. He was formerly Director of Strategic Development at Texas Instruments.
Warren helps semiconductor businesses and investors understand how commercial ambition, technology choices and operational realities fit together. His perspective comes from more than 30 years spent developing products, building international teams and making decisions that shape manufacturing capability and business performance.
That experience began with the engineering itself: understanding silicon, solving production problems and taking products from development into volume manufacturing. At Texas Instruments, Warren led teams behind battery-management technologies that achieved widespread adoption in the laptop market. As his responsibilities grew, so did the scope of the decisions, connecting product development with manufacturing, investment and market opportunity.
At Amkor Technology, that perspective extended across a network of 12 factories. Warren directed product and test engineering practices and substantial equipment investment, helping teams improve capacity, reduce costs and make better use of their manufacturing assets. The work demanded technical judgement alongside the ability to align engineers, suppliers and business leaders around practical priorities.
Warren has also built businesses of his own, with responsibility for developing products, forming teams, securing funding and establishing manufacturing partnerships. He understands the demands of a large organisation and the choices founders face when resources are limited and every commitment counts.
At SemiSphere, he brings these experiences together to help clients assess acquisitions, evaluate technologies, plan investment and decide where to take their businesses next. He can examine a strategic opportunity, question the assumptions behind it and work through what delivery would require. Clients gain an adviser who understands the detail well enough to challenge it, and the wider business well enough to put it in context.
Areas of expertise
- Acquisition and due diligence
- Integration
- Product and test engineering
Martijn DekkersChief Technology Officer
Martijn is SemiSphere’s Chief Technology Officer. His work includes fractional technology leadership, technology consulting and technology compliance.
Martijn helps organisations regain control when technology programmes falter, operations become fragile or the business needs a different direction. He brings together technology leadership, enterprise architecture and practical engineering to understand what is going wrong, establish priorities and turn those decisions into workable change.
His perspective has developed across three decades of building businesses and transforming complex organisations. As a founding CTO, he helped grow a regulatory information business from a small team into an organisation of more than 100 people. Work in government, aviation, energy and manufacturing brought different demands: services that must remain available, systems that cannot be replaced overnight and decisions that carry consequences well beyond the technology department.
That breadth shapes his approach to turnaround work. At Aer Lingus and IAG, he helped recover an at-risk migration by addressing governance, team capabilities and technical direction together. At VARO Energy, his responsibilities combined rebuilding the global infrastructure team with a substantial cloud migration and changes to how services were operated and funded. Across these engagements, architecture, leadership and delivery were connected parts of the same work.
He serves as fractional CTO and CISO, with responsibility for improving the efficiency and security of cloud, hybrid, and on-prem environments for our clients. His work includes implementing DevOps and infrastructure-as-code processes to make changes more consistent, repeatable and manageable.
Martijn’s experience also reaches into semiconductor manufacturing, where he designed and led quality-control and analytics systems connecting factory operations with data, automation and machine learning. He remains closely involved in engineering, including cloud platforms, security architecture and AI systems. This gives him the technical depth to examine a proposed solution, challenge its assumptions and understand what implementing it will demand from the people responsible.
His AI work connects business strategy with the design of complex systems. He works with companies to establish where AI can create value and how to put it into practice, architecting solutions that combine large language models (LLMs), small language models (SLMs), decision models and related data and automation systems. His experience includes multi-agent orchestration, retrieval-augmented generation and controlled AI workflows, with architecture choices shaped by confidentiality, explainability, latency, cost and risk.
He works with Pavicore and its clients on AI strategy and implementation, connecting organisational priorities with the architecture and engineering needed to deliver them.
At SemiSphere, Martijn applies that experience through fractional and interim leadership, technology consulting and compliance work. He helps clients assess their options, strengthen their technology functions and deliver change in demanding environments. Whether working with a board, rebuilding a team or resolving an architectural problem, his focus is on making technology dependable, manageable and useful to the business.
Areas of expertise
- Technology leadership and architecture
- AI strategy and complex AI solution architecture
- LLMs, SLMs, decision models and multi-agent systems
- Machine learning and data architecture
- Cloud platforms, Azure, DevOps and infrastructure as code
- Information technology
- Cybersecurity and technology compliance
Ken StrattonAdvanced Packaging Technology Lead
Ken leads SemiSphere’s advanced packaging technology work. He helps clients work through a question that sits behind every ambitious semiconductor product: how to turn the design into something that can be manufactured reliably, at the required volume and at a viable cost.
His perspective begins on the factory floor. At IBM, Ken worked with the equipment and processes behind semiconductor assembly, developing an understanding of how design choices behave in production and what engineers need to keep manufacturing running. He went on to chair IBM’s Worldwide BEOL Equipment Operations Council, helping sites across the United States, Canada, Ireland and Singapore develop common manufacturing approaches and share technical knowledge.
As his responsibilities expanded into manufacturing quality and development, Ken led work across global assembly suppliers, connecting process control, qualification and production readiness. He oversaw the qualification of gaming CPU and graphics devices for platforms including Nintendo Wii, Microsoft Xbox and Sony PlayStation, from development through high-volume launch. That work demanded close attention to reliability, failure analysis and the practical details that determine whether a product is ready to scale.
At Amkor Technology, Ken progressed through engineering and business leadership roles to Senior Vice President of the fcCSP Advanced Products Business Unit. His responsibilities brought together customer requirements, technology development, manufacturing and commercial performance. He led teams working on advanced flip-chip packaging for automotive, computing, connected devices, AR/VR and mobile applications, with responsibility extending from new product design to high-volume deployment, cost modelling and customer pricing.
Ken’s work has taken him to manufacturing locations around the world to review development plans, resolve process issues and align teams around quality, manufacturability and cost. His experience as an IBM-certified lead auditor also included supplier evaluations, manufacturing readiness reviews, production quality audits and the qualification of US suppliers for ITAR-controlled products. He understands the evidence needed to assess a supplier’s readiness alongside the engineering work needed to improve it.
Throughout that career, developing people has been part of delivering products. Ken has recruited and coached engineers, managers and directors, with an emphasis on ownership and the growth of the team’s capabilities. He brings that same approach to SemiSphere: helping clients make informed packaging and manufacturing decisions, establish clear responsibilities and build teams that can carry the work through to production.
Areas of expertise
- Advanced packaging, including flip-chip CSP and BGA technologies
- 3D ICs and heterogeneous integration
- New product introduction and high-volume manufacturing readiness
- Product reliability, supplier qualification and manufacturing quality
- Cost modelling and commercial programme leadership
- Executive leadership and engineering team development