AI Architect · GenAI Solutions Architect

Designing production-grade LLM, RAG & agentic systems for the enterprise.

16+ years architecting and delivering enterprise platforms for global financial clients — Citibank APAC, Citibank India, and USAA. I bring enterprise-grade governance, security, and reliability to AI adoption in regulated environments.

Post Graduate Program in AI & Machine Learning — Caltech CTME

  • Agentic AI
  • RAG
  • LangGraph
  • MCP
  • OpenAI
  • Claude
  • Pinecone
  • ChromaDB
  • Guardrails
  • Azure
Portrait of Karthik Sukumaran
3 days → 1 hr Design-to-code with AIForce D2C
Citi · 9 markets APAC content platform, zero SAST/DAST
AI3 days → 1 hrDesign-to-code effort with agentic GenAI
AI3+ yrsArchitecting GenAI products for enterprise
Citi9 marketsAPAC content platform owned DEV → PROD
CitiZeroSAST & DAST findings after re-architecture

01 — About

Enterprise rigor, applied to AI.

I'm an AI / GenAI Solutions Architect with 16+ years architecting, delivering, and managing enterprise applications for large-scale financial clients. Today I focus on designing production-grade LLM, RAG, and agentic systems — and on the governance, security, and reliability that make AI adoption work in regulated environments.

  • Architect of AI-driven platforms spanning RAG pipelines, multi-model orchestration (OpenAI, Claude), agentic workflows (LangGraph, MCP), and vector search (Pinecone, ChromaDB), containerized and deployed on Azure.
  • Proven delivery at scale: re-architected legacy content management into microservices across 9 APAC countries, cut Hyperledger Fabric setup from 3 weeks to 30 minutes, and migrated 3.5M documents in 8 hours.
  • Aligns IT architecture with business objectives, builds IT roadmaps, and leads cross-functional, geographically distributed teams through Agile delivery — on time and within budget.
Key clients
Citibank APAC · Citibank India · USAA
Geographies
Asia · India · USA
Primary roles
AI / Solutions Architect · GenAI & Agentic AI · Product Architect

02 — AI Architecture

Production GenAI, architected end to end.

3+ years architecting AI-based products and advising large financial clients on integrating GenAI into enterprise BAU applications — from retrieval and orchestration through to governance.

The stack I design & govern

05Governance
  • AI usage governance
  • Guardrails
  • LLM evaluation
04Agents
  • LangGraph
  • MCP
  • Feedback loops
03Orchestration
  • OpenAI
  • Claude
  • Multi-model routing
  • Prompt engineering
02Retrieval
  • RAG
  • Pinecone
  • ChromaDB
  • Elasticsearch
01Platform
  • Azure
  • Docker
  • Kubernetes

Grounded in enterprise data

RAG pipeline design over vector search, so model output is anchored in the organization's own context.

Agentic, with feedback loops

Autonomous agents that interpret, generate, and refine their own output iteratively — built on LangGraph and MCP.

Model-agnostic by design

Multi-model orchestration and routing across OpenAI and Claude, with prompt-engineering patterns that maximize accuracy.

Governed for regulated industries

AI usage governance, guardrails, and evaluation — shaped by 16+ years of delivery for banks where security and compliance are non-negotiable.

Flagship · Agentic GenAI

HCLTech AIForce D2C

An agentic Design-to-Code platform I designed and built, converting Figma designs into production-ready React, Angular, Next.js, and CMS code.

3 days → 1 hrAverage design-to-code effort
4Output targets
PublishedPlugin on Figma Community
  • Multi-model LLM orchestration across OpenAI and Claude
  • RAG over a ChromaDB / Pinecone vector store for components, layouts, and design tokens
  • Autonomous agents that interpret UI, generate code, and refine output through iterative feedback loops
  • Enterprise standards for generated code — performance, accessibility, maintainability
  • Containerized and deployed on Azure

03 — Citibank

Leading a regulated banking platform across 9 APAC markets.

Manager, Citibank N.A. · Aug 2018 – Sep 2021 — strategic and technical owner of the content management platform, DEV through PROD.

Citibank

Reliable, secure, and compliant content management for Citi across Asia-Pacific — modernized, hardened, and upgraded end to end while staying live.

Markets served

  • AUAustralia
  • CNChina
  • HKHong Kong
  • SGSingapore
  • THThailand
  • MYMalaysia
  • VNVietnam
  • PHPhilippines
  • IDIndonesia

Re-architecture

Legacy SOAP services
New REST APIs
Microservices
Shared business-logic layer
Documentum
Captiva
0 SAST findings 0 DAST findings
01

Microservice re-architecture

Designed and led the team to re-architect the entire legacy codebase into microservices, with one shared business layer serving both legacy SOAP and new REST.

02

Zero SAST & DAST findings

Drove the codebase to a clean security scan by embedding secure-coding standards and comprehensive code reviews into delivery.

03

Full-stack upgrade, 9 countries

Upgraded RHEL, WAS, IHS, database, Documentum, and Captiva across every market — coordinating multiple teams through to completion.

04

Resilience & compliance

Owned End-of-Life and End-of-Vendor-Support upgrades, ran cross-team Disaster Recovery drills, and delivered within mandated change windows.

05

Product ownership

Served as Proxy Product Owner — owning BAU, enhancements, and environment compliance, and bridging business and technology priorities.

06

Team leadership

Built and mentored high-performing development teams to deliver critical, time-sensitive projects in a highly regulated environment.

Earlier with Citi

Citibank India · Citi Wealth Advisory via Polaris FT, 2009 – 2013

Delivered a Documentum 6.5 Document Tracking and Data Entry Workflow solution, and led integration of a Single Account Opening Form spanning Banking, Credit Card, Personal Loan, and Mortgage products.

GEMGone Extra Mile award for the Citibank Auto Fulfillment Unit project, 2011

04 — More highlights

Other work that moved the numbers

Blockchain

CoTrust Blockchain Console

Centralized Hyperledger Fabric setup and administration, reducing environment provisioning from ~3 weeks of error-prone manual effort to 30 minutes.

Scale

High-volume migration

Built a multithreaded migration job that moved 3.5 million documents in 8 hours between storage platforms.

Analytics

Productivity dashboard

ETL, REST API, Angular, and Highcharts dashboard tracking work time, idle time, and per-task effort for task-level productivity analysis.

05 — Core competencies

What I bring to a team

Enterprise Solution Architecture

16+ years · 10+ on Documentum

Full SDLC and ITIL lifecycle — strategy, design, transition, operation, and continual improvement. Architecting, migrating, and upgrading enterprise content management at scale.

Blockchain Architecture

3+ years

Evaluating use cases and architecting secure, scalable, compliant solutions on Hyperledger Fabric, Ethereum, and Corda, integrated into clients' existing workflows.

Leadership & Delivery

9+ years in project management

Owning products DEV through PROD — BAU, enhancements, DR, compliance, and upgrades. Building and mentoring distributed teams; standardizing runbooks, SOPs, and automation.

06 — Experience

Career timeline

  1. Senior Technical Architect — GenAI Solutions AI

    HCLTech

    Sep 2021 — Present

    Architect of AI-driven engineering platforms, leading GenAI and blockchain solution design for enterprise clients. Own architecture, design patterns, and AI governance from concept to production deployment.

    Key achievements

    • AI-powered code generation — AIForce D2C: designed and built an agentic Design-to-Code platform (React, Angular, Next.js, CMS), reducing design-to-code effort from ~3 days to 1 hour. Multi-model orchestration (OpenAI, Claude), RAG over ChromaDB/Pinecone, and autonomous agents with iterative feedback loops; deployed on Azure with a published Figma plugin.
    • Blockchain solution architecture: evaluated business use cases, selected platforms (Hyperledger Fabric, Ethereum, Corda), and architected solutions integrated into clients' workflows with security, scalability, and compliance built in.
    Key responsibilities
    • Define scalable, extensible architecture for AI code-generation platforms — vector-based retrieval, multi-model orchestration, and reusable frameworks for component generation, layout interpretation, and design-token mapping.
    • Establish design patterns and orchestration strategies combining prompt engineering, retrieval, and feedback loops to maximize accuracy and minimize manual coding.
    • Set enterprise-grade standards for generated code (performance, accessibility, maintainability) and standardize workflows across design, development, and CMS ecosystems.
    • Own coding standards, architectural guidelines, and AI usage governance; review system designs for alignment with long-term enterprise architecture goals.
    • Drive adoption of Generative AI, RAG, and agentic systems, and provide strategic direction on AI-led software-engineering transformation.
    • OpenAI
    • Claude
    • RAG
    • LangGraph
    • MCP
    • Pinecone
    • ChromaDB
    • Azure
    • Hyperledger Fabric
  2. Manager 9 APAC markets

    Citibank N.A.

    Aug 2018 — Sep 2021

    Strategic and technical leader for the content management platform serving 9 APAC countries — Australia, China, Hong Kong, Singapore, Thailand, Malaysia, Vietnam, Philippines, and Indonesia — in a highly regulated banking environment.

    Key achievements

    • Designed and led the re-architecture of the entire legacy content management codebase into microservices, with shared business logic supporting both legacy SOAP services and new REST APIs.
    • Drove the codebase to zero SAST and DAST findings, embedding secure-coding standards and comprehensive code reviews into delivery.
    • Upgraded the complete environment across 9 countries (RHEL, WAS, IHS, database, Documentum, Captiva), coordinating multiple teams to completion.
    Architecture, operations & leadership
    • Architected complex, scalable solutions for demanding business requirements across the APAC portfolio.
    • Served as Proxy Product Owner, managing priorities and bridging business and technical teams.
    • Owned periodic upgrades driven by End-of-Vendor-Support and End-of-Life requirements, and coordinated cross-team Disaster Recovery drills.
    • Aligned business, compliance, and infrastructure stakeholders to execute maintenance within mandated change windows.
    • Built and mentored high-performing development teams for critical, time-sensitive projects.
    • Microservices
    • REST / SOAP
    • Documentum
    • Captiva
    • AppSec
    • DR
  3. Senior Technical Lead

    HCLTech

    Mar 2013 — Aug 2018

    Led delivery of enterprise content management projects — requirement gathering, project planning, and onsite-offshore coordination, including extended onsite engagements working directly with clients.

    • Led Agile delivery — sprint planning, task assignment, and team leadership — with hands-on code reviews, Webtop customization, and scheduled-job creation.
    • Designed a productivity dashboard (ETL, REST API, Angular, Highcharts) tracking work time, idle time, and per-task effort for task-level analysis.
    • As Blockchain Architect and core member of the HCL CoTrust Platform, built MVPs on Hyperledger Fabric (1.0, 0.6) and Ethereum.
    • Agile
    • Documentum
    • Angular
    • Highcharts
    • Hyperledger
    • Ethereum
  4. Associate Consultant

    Polaris FT

    Dec 2009 — Mar 2013

    Delivered an enterprise document workflow solution for Citibank India, implementing EMC Documentum 6.5 SP3 for the Citi Wealth Advisory business.

    • Built a comprehensive Document Tracking and Data Entry Workflow solution on Documentum.
    • Led integration of a Single Account Opening Form spanning Banking, Credit Card, Personal Loan, and Mortgage products in one unified flow.
    • Designed and developed DFS services and multi-workflow enhancements on the Documentum Framework.
    • Documentum 6.5
    • DFS
    • Workflow

07 — Technical skills

Toolbox

Primary focus

AI / GenAI Architecture

LLMs & orchestration

  • OpenAI API
  • Claude
  • Multi-model routing
  • Prompt engineering

Agentic AI

  • LangGraph
  • MCP
  • Autonomous agents
  • Feedback loops

Retrieval

  • RAG
  • Pinecone
  • ChromaDB
  • Elasticsearch

Governance & quality

  • AI governance
  • Guardrails
  • LLM evaluation
  • Figma plugin dev

Security & compliance

  • SAST / DAST remediation
  • Secure coding
  • Disaster Recovery
  • EoL upgrades
  • ITIL

Languages

  • Python
  • Node.js
  • Java
  • Go
  • JavaScript
  • C# .NET
  • DFC
  • DQL

Frameworks

  • Express.js
  • Spring
  • Jersey (JAX-RS)
  • Angular
  • React
  • OAuth
  • Highcharts

Cloud & containers

  • Azure
  • AWS
  • IBM Cloud
  • Docker
  • Docker Compose
  • Kubernetes

Blockchain

  • Hyperledger Fabric
  • Ethereum
  • Corda

Databases & storage

  • MongoDB
  • Cloudant
  • Oracle
  • SQL Server
  • MySQL
  • IBM DB2
  • Amazon S3
  • Centera
  • NAS

Enterprise content

  • Documentum
  • Captiva
  • Documentum Composer
  • Process Builder

Servers, DevOps & ITSM

  • WebSphere
  • WebLogic
  • JBoss
  • Tomcat
  • Git
  • SonarQube
  • IBM RTC
  • ServiceNow

Methods & tools

  • Agile
  • Kanban
  • Waterfall
  • ETL
  • ITIL
  • VS Code
  • Figma plugin dev

08 — Credentials

Education, certifications & recognition

Education

Caltech CTME

Post Graduate Program in AI & Machine Learning

Caltech CTME

Anna University

B.E., Electronics & Communication Engineering

Anand Institute of Higher Technology, Anna University

Awards

  • O∞

    O-Infinity Award · 2021–2025

    Outstanding rating for 4 consecutive years at HCLTech.

  • O∞

    O-Infinity Award · 2013–2017

    Outstanding rating for 4 consecutive years at HCLTech.

  • GEM

    Gone Extra Mile Award · 2011

    Outstanding performance for Citibank on the Auto Fulfillment Unit project at Polaris.

Certifications

Certification badge Certification badge Certification badge Certification badge Certification badge Certification badge
  • ITIL FoundationAXELOS
  • AWS Cloud PractitionerAmazon Web Services
  • MongoDB SI AssociateMongoDB
  • Corda Certified DeveloperR3
  • Corda for Business ProfessionalR3
  • New Product DevelopmentIIM Bangalore
  • Blockchain for BusinessLinux Foundation
  • Blockchain EssentialsIBM Blockchain Platform
  • Developer FoundationIBM Blockchain Platform

09 — Contact

Let's build AI that enterprises can trust.

Open to conversations on GenAI architecture, agentic platforms, and AI adoption in regulated industries.