Enterprise architecture · Solution design · Spec-driven agentic AI

Complex change and AI ambition,built and governed.

I turn complex change and AI ambition into a buildable, governed plan, and see it through to a working solution, delivered with your teams.

25+ years in architectureEnterprise to implementation
Sanjay Karwa
Sanjay Karwa
Architecture experience across the UK, Europe, Asia and North America.

Where I can help

Choose the entry point that matches where you are: architecture, a complete solution design, or AI implementation. Each starts with your business problem and an agreed scope.

Enterprise view

Enterprise architecture

  • Current-state view
  • Target architecture
  • Transition states
  • Staged roadmap
  • Decision log

When you need a clear view of the estate and a defensible direction for change. I establish ownership, dependencies and priorities with your business and technology leads.

First step: book an architecture decision review

End-to-end design

Solution design

  • High-level design
  • Sequence flows
  • API and integration specs
  • Security and NFRs
  • Migration and coexistence plan

When complex requirements need one coherent end-to-end solution. I resolve interfaces, security, migration and design decisions with your teams and vendors.

First step: book a solution design review

Governed automation

Spec-driven agentic AI automation

  • Written specification
  • Governed workflows
  • Separate verification
  • Traceability record
  • Prototype, MVP, full solution

When repeatable work is ready for automation with clear boundaries and human oversight. Agentic AI means agents that carry out multi-step work, not just answer questions. I build them with secure access, evaluation and traceable outcomes.

First step: book an AI feasibility assessment

Not sure which fits?Book a call

Selected work

Enterprise architecture connected to practical implementation. The programmes below show the scope and the outcomes.

Enterprise programmes by sector

Outcome, challenge and approach

Telecom

Digital BSS/OSS, CRM and partner platforms

  • VMO2 UK
  • Verizon
  • Telefónica Germany
  • Hutchison 3G UK
  • Ericsson UK
Outcome
API and security frameworks supporting millions of subscribers.
Challenge
Bringing legacy systems into a cloud-native Digital BSS platform.
Approach
Partner architecture and Salesforce integration, with CRM and data governance across Salesforce and Vlocity.

TM Forum ODA & Open APIs · Agentic architecture

Banking and finance

Market data, middleware and global messaging

  • Royal Bank of Scotland
  • NASDAQ Europe
  • NASDAQ Deutschland
  • NASDAQ Japan
  • Pacific Stock Exchange, US
Outcome
Lower-latency, more secure message flows across global messaging hubs.
Challenge
Market-data applications and exchange systems needing reliable integration across global messaging hubs.
Approach
Middleware and integration architecture for market data, investment banking and exchange platforms.

Market data · Secure integration · Global messaging

Retail, betting and logistics

Multichannel customer experience and integration

  • Carphone Warehouse / Best Buy Europe
  • Ladbrokes UK
  • Lufthansa Cargo, Germany
Outcome
Higher customer engagement across digital channels, with faster, lower-cost delivery.
Challenge
Customer journeys and business platforms spread across separate channels.
Approach
Solution and integration architecture across customer channels, business platforms and operations, with delivery automation built in.

Customer journeys · Systems integration · Operational architecture

Agentic architecture in practice

Ask for a walkthrough

  1. Requirements
  2. Specification
  3. Build
  4. Independent verification
  5. Human approval
  6. Evidence and release

Spec-driven means every step traces back to an agreed, written specification, so the work stays reviewable end to end. For example, tests are written by separate agents that never see the code they check.

Enterprise architecture automation

Requirements, Architecture & Design Automation

I design agentic workflows that turn business requirements and enterprise knowledge into architecture options, impact analysis and solution designs. Specifications, diagrams and review feedback stay connected, with architects retaining design authority.

Enterprise grounding · Architect-led decisions

Operational community platform

Software Lifecycle Automation

I designed and built end-to-end SDLC automation for a free community platform that is now operational and self-managed. Agentic workflows take change requests through requirements, wireframes and approval, then architecture, implementation, testing and release. Human approvals and independent verification are built into the workflow.

Change request to approved release

See the prototype in action.

Live walkthroughs on a call, specific to your requirements.

Book a walkthrough

Accountable delivery

Enterprise depth.
Personal accountability.

25+ years connecting business, applications and data across legacy and cloud systems in telecom, banking and retail, now combined with spec-driven agentic AI.

Also insurance and other domains, through close work with domain specialists.

Agentic Vertical AI Automation Certified Specialist.

Master of Engineering with Honors, IIT Roorkee

Bachelor of Technology with Distinction, Sri Venkateswara University

Business outcomes

You get clear baselines and agreed measures for revenue, cost and time to market.

Architecture ownership

Requirements and design decisions stay connected, with explicit trade-offs you can defend to your board.

Knowledge you retain

Your architects and engineers keep maintainable specifications and operating guidance. No black boxes.

Tell me the challenge. I'll tell you honestly where to start.

From enterprise architecture to spec-driven AI automation, we start at the stage that fits: a prototype to prove the approach, an MVP to prove it in use, or a complete solution ready to operate at scale.

  1. Prototype

    Test the approach against a focused use case, then agree whether it earns an MVP.

  2. MVP

    Build the essential workflows, integrations and controls, proven in use before scaling.

  3. Complete solution

    Extend the architecture, validate readiness and hand over for operation at scale.

A focused 15-minute conversation about your challenge. No pitch, just an honest view on where to start.