
Stephen Stewart
Senior Consultant with 30+ years of experience
Stephen is a senior consultant with a focus on Internet of Things (IoT) connectivity and sustainable business development, with a 30-year plus successful track record.
He is a technology specialist in the smart card, mobile telecoms (including eSIM), IoT/M2M, biometrics, fintech (PAYGO & electronic payments) and digital security industries and has international experience in the UK, Europe and Africa.
He has occupied leadership roles in the start-up and management of several subsidiaries for large multi-national companies and has wide-ranging commercial, sales & marketing and project management skills, with an excellent understanding of cash-flow management, cost containment and sustainable development requirements.

Stephen Stewart CV
STEPHEN STEWART
| Reading, UK | stephen.stewart@stellio.technology | +447595564777 | linkedin.com/in/st3phenst3wart | www.stellio.technology |
EXECUTIVE PROFILE: GLOBAL TECHNOLOGY & DIGITAL TRANSFORMATION LEADER
Highly accomplished and results-driven Executive with 30+ years of international experience in the deep technology and telecommunications sectors. Proven capability in General Management, P&L Ownership, and establishing high-growth technology subsidiaries across Europe and Africa. Expertise focuses on IoT, AIoT, Digital MRV (d-MRV), and Enterprise Connectivity strategies, driving significant recurring revenue growth and operational excellence. Adept at steering complex commercial negotiations and leading global Customer Success teams that contribute to large portions of enterprise revenue.
CORE COMPETENCIES
Strategic Management Commercial & P&L Leadership Technical Domains
Executive Management & Board Reporting Multi-National Subsidiary Start-up IoT Solution Architecture & Design
Global Business Development & Sales Full P&L Responsibility & Balance Sheet Control AIoT Digital Transformation
Strategic Planning & Implementation High-Value Contract Negotiation Secure Cellular & eUICC Technology
Top-Tier Stakeholder Management Sustainable Business & Revenue Growth (CAGR) Climate Finance Technology
PROFESSIONAL EXPERIENCE
STELLIO TECHNOLOGY CONSULTANT – IoT and AIoT | Self-Employed / 4R Digital/Cavex
Reading, UK | April 2024 – Present (18 Months)
- Spearheaded the development of the IoT and AIoT strategy for Carbon Value Exchange (Cavex), a climate finance leader focused on environmental and socioeconomic benefits.
- Drove Digital Transformation by defining the strategy for d-MRV (digital Monitoring, Reporting, and Verification) to enhance data quality, security, and provenance.
- Targeted Value Creation by integrating AIoT to reduce data acquisition costs and achieve higher carbon credit valuations for project owners in voluntary carbon markets.
SVP - CUSTOMER SUCCESS | Eseye Ltd (Global IoT Connectivity Provider)
Guildford, UK | January 2020 – March 2024 (4 Years, 3 Months)
- Executive Leadership: Headed the global Customer Success function, maintaining strategic oversight of the company’s Top 40 key accounts.
- Revenue Impact: Directly managed and grew a portfolio contributing two-thirds (67%) of the company’s Monthly Recurring Revenue (MRR).
- Grew Customer Success revenue by 15% CAGR through strategic account management and value-driven service delivery.
- Drove results through planned implementation and the creation of highly performing, outcome-focused Customer Success teams.
REGIONAL DIRECTOR - AFRICA | Eseye Ltd
Guildford, UK | 2014 – 2020 (6 Years)
- International Expansion: Responsible for developing Eseye's fledgling business across the African continent, successfully establishing market presence and business funnels in diverse sectors (solar, banking, asset tracking, healthcare).
- Subsidiary Establishment: Started up two new subsidiaries in South Africa and Kenya, managing all operational, financial, and regulatory aspects of market entry.
- Strategic Partnerships: Negotiated critical mobile inter-connect agreements with African Mobile Network Operators (MNOs) and established partner programs in key countries (Nigeria, Ghana, Kenya, Botswana).
MANAGING DIRECTOR, UK & NORTHERN EUROPE TELECOMS SALES | Morpho Cards UK Limited (now Idemia)
Winnersh, UK | 2009 – 2014 (5 Years)
- General Management: Held Managing Director and P&L responsibility, leading strategic direction for North Europe telecoms sales within the broader EMEA strategy.
- Growth & Revenue: Achieved and exceeded sales and EBIT targets, driving turnover growth by a highly competitive 8% CAGR during tough economic conditions.
- Major Deal Closure: Concluded and extended strategic supply agreements with Tier-1 operators, including Vodafone UK, Telenor Norway, Tele2 Sweden, and extended contracts with EE, TeliaSonera, and KPN/E-Plus.
- Financial Control: Managed all company financial and HR matters, including implementing new benefits, pension, and salary sacrifice schemes.
MANAGING DIRECTOR, SA | Sagem Orga SA (Pty) Ltd
Johannesburg, South Africa | 2005 – 2009 (4 Years)
- Start-Up & Scaling: Established Sagem Orga's first subsidiary in Africa (one of four subsidiaries started up in career).
- Rapid Growth: Built the subsidiary from launch into a highly profitable €12 million turnover company with a sustained 34% CAGR (Compound Annual Growth Rate).
- Key Account Acquisition: Secured the MTN Group and the Airtel Group as new, long-term customers, rapidly dominating the market sector.
- Operational Excellence: Project managed the successful commissioning of a card production facility in Lagos, Nigeria, securing the necessary manufacturing license from the NCC.
EDUCATION & BOARD LEADERSHIP
- Master of Business Administration (MBA) | University of Cape Town
- Bachelor of Engineering (Electronic) | University of Stellenbosch
BOARD EXPERIENCE
- Morpho Cards (UK): Wholly owned by the CAC40 listed SAFRAN Group (Former)
- Sagem Orga (SA): Wholly owned by the Sagem Group (Former)
- Bluefish Technologies (SA): Private (Former)