Rohit Abbi

Principal / Senior Solution Architect with 20+ years of experience designing enterprise architectures and transformation solutions for Communications Service Providers across Europe, Middle East, Asia-Pacific and Australia. Experienced in defining target architectures, solution strategies and technology roadmaps across complex telecom environments, combining deep BSS/OSS expertise with enterprise architecture, cloud-native platforms, API-led integration and digital transformation. Strong background in translating business objectives into scalable technical solutions, working with business stakeholders, enterprise architects, engineering teams and senior technology leaders to define architectures that support transformation outcomes.

Extensive experience across telecom BSS/OSS domains including Product Catalogue, CPQ, Order Management, CRM, Billing, Charging, Provisioning, Inventory, Digital Commerce and Service Fulfilment, with strong knowledge of TM Forum Open APIs, SID and eTOM. Experienced in designing AI-enabled enterprise architectures, helping organisations identify practical Generative AI use cases and defining solution patterns involving LLMs, RAG, enterprise knowledge retrieval, APIs, automation and integration with existing business platforms. Recognised as a trusted architecture advisor who bridges business strategy, technology capabilities and implementation considerations to deliver practical transformation roadmaps.

Senior Architecture Advisor & Solution Consultant (Telecom Transformation & AI) - S4 Digital - UK

(2026-03)

• Provide architecture advisory and solution consulting support, defining target architectures, transformation strategies and solution roadmaps for telecom BSS/OSS, digital platforms and AI-enabled enterprise solutions.
• Work closely with customer business, technology and architecture teams through discovery workshops to understand their challenges, assess current capabilities and shape practical transformation strategies.
• Translate customer requirements and business objectives into target architectures, solution options, integration approaches and implementation roadmaps.
• Support customers in identifying where Generative AI can deliver business value across telecom and enterprise environments, including customer experience, operations, knowledge management, automation and process optimisation.
• Help customers explore AI use cases and define the required solution architecture, including the role of LLMs, RAG, enterprise knowledge sources, APIs, automation workflows and existing BSS/OSS platforms.
• Provide guidance on key AI architecture considerations including data and knowledge requirements, security, identity and access management, governance, scalability and integration with existing enterprise systems.
• Advise customers on how AI-enabled capabilities can enhance existing telecom processes by connecting business systems, operational platforms and domain knowledge.
• Contribute to RFP/RFI responses, solution proposals, demonstrations and proof-of-concepts by providing architecture input, technical guidance and customer-focused solution narratives.
• Act as a trusted advisor to customers, helping them navigate technology choices, architectural trade-offs and transformation priorities.

Manager - Sales Engineering (Telecom BSS/OSS & AI) - LotusFlare

(2025-02 - 2026-02)

Vendor-side role focused on designing and presenting solution architectures across BSS, eSIM, API monetisation and cloud-native platforms.

• Designed and presented solution architectures across BSS, eSIM, API monetisation and cloud-native platforms, defining integration approaches, deployment models and architectural trade-offs.
• Led customer-specific solution propositions and PoCs, translating complex business and technical requirements into compelling architectures, demonstrations and commercial propositions.
• Prepared and presented cloud architecture (AWS, Azure & GCP) for target solutions, defining cloud services, integration patterns, deployment approaches and key architectural trade-offs.
• Designed and presented AI architecture for an AI Companion application, covering LLM integration, RAG, enterprise knowledge access and backend integration.
• Advised VP, CTO, CIO and Digital stakeholders, connecting technology decisions to business outcomes while feeding customer requirements and product gaps into Product Management and roadmap discussions.
• Applied AI to accelerate pre-sales, developing AI-enabled customer demos and automating demo configuration and RFP/RFI content development.

Senior Solution Architect - S4 Digital

(2021-07 - 2025-02)

Consultancy providing project-based solution architecture and customer success resources to telecommunications clients.

Senior Solution Architect - Digital Platforms & BSS/OSS Transformation - S4 Digital - Belgium

(2021-07 - 2024-09)

Senior Solution Architect & Customer Success Manager for B2C and B2B2E digital platforms spanning the Proximus+ mobile app, Proximus.be consumer self-service webshop and retail stores at Proximus Belgium.

• Analysed complex business requirements, challenged assumptions and translated business needs into high-level and detailed end-to-end solution architectures across B2C and B2B2E digital platforms.
• Designed scalable digital platform architectures using microservices architecture, API-led integration and cloud-native principles to support flexible customer journeys and enterprise transformation objectives.
• Worked with enterprise architects, process architects, data architects and engineering teams to align solution designs with target enterprise architecture principles, technology standards and strategic business goals.
• Led solution design activities across digital channels, including the Proximus+ mobile application, Proximus.be consumer webshop and retail platforms, integrating customer-facing applications with the wider BSS/OSS ecosystem.
• Defined functional, non-functional and technical requirements, translating business capabilities into architecture designs, service boundaries, integration patterns and implementation strategies.
• Performed early project assessments, contributing to solution sizing, complexity analysis and high-level effort estimates to support delivery planning and investment decisions.
• Designed API-enabled integration patterns connecting digital channels, CRM, Product Catalogue, Order Management, Billing, partner platforms and backend services.
• Supported delivery teams and development squads throughout design, development, testing and implementation phases, providing architectural guidance and resolving technical challenges.
• Delivered end-to-end architecture for major digital transformation initiatives, including the replacement of the legacy My Proximus application and complex ordering, fulfilment and provisioning journeys for fibre products across digital and retail channels.

Senior Solution Architect - S4 Digital - Saudi Arabia

(2024-10 - 2025-02)

B2B BSS/OSS digital transformation project at Saudi Telecom.

• Responsible for solution design for federation of TMF620 compliant Product Catalogue data into CPQ, Charging, Billing and Rating, and Order Management systems.
• Designed end-to-end federation journeys based on TMF620 notification events and documented the solution design.
• Identified end-to-end PLM impact across data federation journeys while working with TMF compliant and legacy system data models.

Senior Solutions Consultant / Senior Pre-Sales Architecture Consultant - Hansen Technologies - EMEA and APAC

(2017-05 - 2021-06)

Led pre-sales and solution architecture activity across EMEA and APAC for BSS/OSS transformation initiatives.

• Led pre-sales and solution architecture activity across EMEA and APAC for BSS/OSS transformation, spanning Product Catalogue, CPQ, Order Management, Service and Device Provisioning, Portfolio Inventory and Insights.
• Owned RFx responses, high-level solution design, demonstrations, proof-of-concepts and executive presentations; partnered with Sales Directors on licence and services pricing.
• Led the technical sales strategy and solution architecture contributing to US$14M+ in awarded telecom programmes
• US$5M Product Catalogue licences and services programme with one of Indonesia's largest telecommunications service providers TELKOMSEL, serving 185M subscribers
• US$9M programme covering Product Catalogue, CPQ, Order Management, Portfolio Inventory and Informatics with one of India's largest telecommunications service providers BHARTI AIRTEL, serving 300M subscribers.
• Represented Hansen at TM Forum conferences in Nice and Malaysia and at Mobile World Congress in Barcelona.

Manager, Lead Business Analyst - Harman International - UK

(2016 - 2017)

Consulting to Lebara Mobile UK

Product Architect - Sky UK - UK

(2013 - 2016)

Senior Solutions Architecture Professional Services Consultant - Sigma Systems

(2006 - 2013)

Clients included Inmarsat UK, Vodafone Germany, Century Link Denver USA, Telstra Melbourne Australia, Internet Solutions Johannesburg South Africa, Telkom Austria, Telecom New Zealand (TNZ) Auckland.

Solution Architect - Telstra - Australia

(2004 - 2006)

Analyst Programmer - Victoria University - Australia

(2001 - 2004)

Technical Support Team Leader - Telstra - Australia

(1997 - 2001)

Master of Business - Information Systems - Victoria University of Technology (2003 - 2003)

Master of Business - Information Systems - Victoria University of Technology (2001 - 2001)