Siddhartha Lahiri

CTO

Delhi, India25 yrs 11 mos experience
AI ML PractitionerAI Enabled

Key Highlights

  • Led engineering teams across four continents.
  • Transformed single-tenant to multi-tenant SaaS architecture.
  • Achieved ISO 27001 and SOC 2 certification.
Stackforce AI infers this person is a Fintech and SaaS architect with extensive experience in engineering leadership.

Contact

Skills

Core Skills

Systems DesignProduct ManagementAi AgentsData EngineeringEngineering LeadershipSolution ArchitectureIntegrationArchitecture

Other Skills

Prompt EngineeringModel Context Protocol (MCP)Requirements GatheringRetrieval-Augmented Generation (RAG)Large Language Models (LLM)Python (Programming Language)LoopBack.ioLeadershipNode.jsData LakesDistributed SystemsAmazon Web Services (AWS)AngularJSLangChainFlutter

About

๐‚๐“๐Ž ๐ฐ๐ก๐จ ๐ฌ๐ญ๐š๐ฒ๐ฌ ๐œ๐ฅ๐จ๐ฌ๐ž ๐ญ๐จ ๐ญ๐ก๐ž ๐œ๐จ๐๐ž ๐ˆ ๐ฅ๐ž๐š๐ ๐ž๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐  ๐š๐ญ ๐•๐š๐ฅ๐ฎ๐ž๐Ÿ๐ฒโ€” a B2B2C wealth-tech platform serving asset managers across Singapore, Switzerland, and the Middle East. The role spans architecture, product, and security. I still write production code. Our AI document processing pipeline and Data Copilot were built hands-on, using LangGraph and MCP architecture. Before Valuefy, I spent 14 years at Publicis Sapient โ€” growing from engineer to Director. The work that shaped me most: Neo Bank architectures for TD Bank and Saudi Arabia, a government pensions transformation in Abu Dhabi, and building engineering teams across four continents. ๐‚๐จ๐ซ๐ž ๐ฌ๐ญ๐š๐œ๐ค: Node.js, React, Python, Java. Cloud-native on AWS and Kubernetes. AI agents with LangGraph, RAG, and vision models. ๐๐ฎ๐ข๐ฅ๐ญ ๐Ÿ๐ซ๐จ๐ฆ ๐ฌ๐œ๐ซ๐š๐ญ๐œ๐ก: โ€ข Multi-tenant SaaS architecture powering Valuefy's international expansion โ€ข AI document processing pipeline reducing ingestion from one week to one day โ€ข Data Copilot on MCP architecture enabling natural language portfolio queries โ€ข Bare-metal Kubernetes clusters on Rancher for government-grade workloads ๐Œ๐ฒ ๐๐จ๐ฆ๐š๐ข๐ง ๐ข๐ฌ ๐Ÿ๐ข๐ง๐š๐ง๐œ๐ข๐š๐ฅ ๐ฌ๐ž๐ซ๐ฏ๐ข๐œ๐ž๐ฌโ€” Neo Banks, wealth management, government platforms. Worked across DFSA, MAS, and European regulatory environments. Integrated with 60+ custodian banks. ๐ƒ๐ž๐ฅ๐ข๐ฏ๐ž๐ซ๐ž๐ ๐ ๐ฅ๐จ๐›๐š๐ฅ๐ฅ๐ฒ โ€” onsite across South Africa, Netherlands, Canada, US, UK, and UAE. Clients across Saudi Arabia, Sri Lanka, Switzerland, Singapore, and India. ๐€๐ญ ๐ฆ๐ฒ ๐œ๐จ๐ซ๐ž ๐ˆ'๐ฆ ๐š ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ ๐ฌ๐จ๐ฅ๐ฏ๐ž๐ซโ€” most comfortable at the intersection of business and engineering, working with cross-functional teams to translate complex technology into business outcomes and back again. I automate aggressively so there's more room for work that actually needs a human. Outside of engineering, I'm a landscape photographer โ€” same eye for detail, different lens.

Experience

25 yrs 11 mos
Total Experience
4 yrs 5 mos
Average Tenure
3 yrs 6 mos
Current Experience

Valuefy

Chief Technology Officer

Nov 2022 โ€“ Present ยท 3 yrs 6 mos ยท Mumbai ยท On-site

  • ๐‹๐ž๐š๐๐ž๐ซ๐ฌ๐ก๐ข๐ฉ
  • Restructured delivery operations, significantly reducing client go-live timelines
  • Led cross-functional team of 80 across Product, Engineering, Support, and Data Services
  • ๐๐ซ๐จ๐๐ฎ๐œ๐ญ
  • Acting Engineering PM for Dashboard and Onboarding modules
  • Pioneered widget-based micro-frontend architecture โ€” 70% faster deployment
  • Invented "Workspace" paradigm replacing sequential workflows โ€” 40% efficiency gain
  • ๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ & ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐ 
  • Transformed single-tenant to multi-tenant SaaS, reducing infrastructure costs and enabling international scale
  • Delivered flagship SaaS products โ€” Onboarding and Portfolio Dashboard โ€” end-to-end
  • Delivered end-to-end wealth management platform for Bank Muscat
  • Built engineering leadership, team structures, and a platform engineering culture from the ground up
  • Achieved ISO 27001 and SOC 2 Type 1 certification , GDPR Compliance as an acting CISO
  • Rearchitected APIs from 2โ€“3 minutes to sub-second load times
  • ๐€๐ˆ & ๐ˆ๐ง๐ง๐จ๐ฏ๐š๐ญ๐ข๐จ๐ง
  • Architected AI document processing using LangGraph and vision models โ€” ingestion from 1 week to 1 day
  • Built Data Copilot on MCP architecture for natural language portfolio queries
  • ๐„๐ง๐ญ๐ž๐ซ๐ฉ๐ซ๐ข๐ฌ๐ž & ๐‚๐จ๐ฆ๐ฆ๐ž๐ซ๐œ๐ข๐š๐ฅ
  • Established enterprise practice โ€” estimation frameworks, deal structures, delivery governance, and change management
  • Initiated SI partnerships to make the product partner-ready for scaled distribution
  • Engaged directly with client C-suites across large bank sales cycles, structuring and negotiating multi-phase SOWs
  • Delivered Bank Muscat's wealth management platform end-to-end, from inception to go-live
Prompt EngineeringModel Context Protocol (MCP)Requirements GatheringRetrieval-Augmented Generation (RAG)Large Language Models (LLM)Python (Programming Language)+12

Publicis sapient

5 roles

Director Technology

Promoted

Mar 2017 โ€“ Oct 2022 ยท 5 yrs 7 mos

  • Outcomes:
  • "$15M+ revenue" for Neo Bank KSA
  • "$15M+ revenue" for TD Bank
  • "$5M contract" for IoT Piggy Bank
  • "$250K" for Alexa voice banking
  • "100+ engineers managed"
  • "25-30% operational cost reduction" for API Marketplace
  • Responsibilities:
  • Engineering Lead for large Financial Services programs
  • Enabling automation, DevOps and agile culture
  • Establishing engineering pods
  • Managing C-Suite, founders and key stakeholders
  • Mentoring engineers and leads
  • Building tech capabilities and tribes
  • Leading code re-use and inner source initiatives
  • Led the following engagements:
  • Neo-Bank roadmap and strategy to build a digital bank in Saudi Arabia
  • Modernized UAE's Govt. pension provider into an award-winning platform (ICMG)
  • Engineering transformation of UAE's largest sovereign fund organization
  • Hiring graduates and senior leadership and representing the brand in premium colleges
  • Digital bank strategy playbook to drive repeatable pre-sales for large banks
Google Cloud Platform (GCP)PresalesMicrosoft AzureClient RelationsSystems DesignGlobal Delivery+2

Senior Manager Technology

Mar 2013 โ€“ Mar 2017 ยท 4 yrs

  • Led the following engagements:
  • Prototype for the production of IoT piggy bank for North American bank
  • Digital-only bank platform for one of the largest banks on the East Coast, NA
  • Alexa journey for payments and billing for a digital bank with AWS Lambda and Cloud
  • Digital strategy and product definition to build an in-house CRM for a Canadian bank
  • Co-founded the organization's only open source initiative on GitHub.
  • Automation of Call & Dodd-Frank reports of an entire bank
Solution ArchitectureChatbotJavaInternet of Things (IoT)Systems DesignIntegration+3

Manager Technology

Promoted

Mar 2009 โ€“ Mar 2013 ยท 4 yrs

  • TD Bank - Enterprise Applications & Integration
  • Application Architect implementing 6 enterprise applications on Spring, Spring Web Flow, and Java SOAP APIs
  • Designed enterprise integration architecture for 3 bank acquisitions; launched the consolidated TD branded bank within one year
  • Led team of 50+ developers and 6 tech leads over a 2-year program with $5M annual budget
  • Delivered end-to-end banking platform enabling TD's digital transformation in North America
  • Technologies: Java, Spring, Spring Web Flow, SOAP APIs, Enterprise Integration, Oracle
Financial ServicesRequirements AnalysisIntegrationSoftware Project ManagementService-Oriented Architecture (SOA)Websphere+4

Senior Associate Technology L2

Promoted

Mar 2008 โ€“ Mar 2009 ยท 1 yr

  • XO Communications - B2B Telecom Integration
  • Integration Architect for XO Communications, a major B2B telecom provider in the US
  • Built SOA architecture and SOAP web services on WebLogic ESB
  • Implemented event-based communication integrating multiple systems over Tibco and WebLogic using JMS Queues and Topics
  • Designed end-to-end event orchestration layer integrating 15+ enterprise systems
  • Technologies: WebLogic ESB, Tibco, JMS, SOAP, SOA, Java, Enterprise Integration Patterns
Financial ServicesSOAIntegrationService-Oriented Architecture (SOA)WebsphereJava Enterprise Edition+3

Senior Associate Technology L1

Feb 2007 โ€“ Mar 2008 ยท 1 yr 1 mo

  • US News & World Report - CMS & Performance Engineering
  • Delivered custom CMS platform on Spring, Hibernate, and MySQL for usnews.com
  • Wrote custom ORM in core Java to resolve Hibernate performance bottlenecks
  • Achieved 80% improvement in platform speed through performance optimization
  • First major project at Sapient; established foundation for rapid career growth
  • Technologies: Java, Spring, Hibernate, MySQL, Performance Tuning, CMS

Systems lifecycle private limited

3 roles

Project Lead

Jul 2006 โ€“ Feb 2007 ยท 7 mos

  • Telkom South Africa - Enterprise CMS Implementation
  • Led CMS implementation and content migration for Telkom, South Africa's largest telecom provider
  • Implemented and customized OpenCMS, migrating content from legacy Oracle CMS
  • Built custom content testing, automation, and reporting tools for business acceptance
  • Managed offshore-onshore coordination with South African client teams
  • Technologies: OpenCMS, Java, Oracle, Content Migration, Automation Testing

Consultant

Apr 2005 โ€“ Jun 2006 ยท 1 yr 2 mos

  • Reliance Energy - Point of Sale System
  • Delivered Point of Sale (POS) implementation for Reliance Energy in record 6 months
  • Developed POS application in Paradigm C with custom TCP stack implementation
  • Built socket server using Visual Basic and MSSQL for real-time transaction processing
  • First leadership role managing end-to-end delivery for enterprise client
  • Technologies: C, Visual Basic, MSSQL, Socket Programming, TCP/IP, POS Systems

Software Developer

Mar 2004 โ€“ Mar 2005 ยท 1 yr

  • Enterprise Application Development
  • Developed enterprise applications for telecom and energy sector clients
  • Built backend services and database integrations
  • Gained foundational experience in Java and enterprise development
  • Contributed to multiple client deliveries supporting senior developers
  • Technologies: Java, SQL, Enterprise Applications

Arogyam

IT Manager

Dec 2002 โ€“ Jan 2004 ยท 1 yr 1 mo ยท Patna Area, India

  • Healthcare IT Management
  • Managed IT infrastructure and systems for healthcare organization
  • Oversaw technology operations and vendor relationships
  • First management role; developed skills in team coordination and stakeholder communication
  • Implemented process improvements for operational efficiency

Sky infotech

Software Developer

Jan 2001 โ€“ Dec 2002 ยท 1 yr 11 mos ยท Patna Area, India

  • Early Career - Web Application Development
  • Developed web applications for various clients
  • Built dynamic websites using early web technologies
  • Gained hands-on experience in full software development lifecycle
  • Foundation years that sparked passion for technology and innovation

Freelance (self employed)

Freelance Web Developer

Jan 1999 โ€“ Jan 2001 ยท 2 yrs ยท Patna, Bihar, India

  • Freelance Web Development - Entrepreneurial Start
  • Built websites and web applications for local businesses in Bihar
  • Self-taught web technologies while completing university degree
  • Managed end-to-end client relationships, requirements, and delivery
  • Entrepreneurial foundation that shaped my hands-on approach to technology

Niit

Computer Teacher

Aug 1998 โ€“ Jan 1999 ยท 5 mos ยท Patna, Bihar, India ยท On-site

  • Technology Education
  • Taught computer fundamentals and programming to students
  • Developed curriculum and training materials
  • First experience translating complex technical concepts for diverse audiences
  • Foundation for future mentoring and team development skills
  • These early teaching experiences shaped my leadership styleโ€”I believe the best CTOs are also teachers who can simplify complexity and develop talent.

St. paul's academy

High School Teacher of Physics

Jan 1998 โ€“ Jan 1999 ยท 1 yr ยท Patna, Bihar, India ยท On-site

  • Physics Education
  • Taught Physics to high school students
  • Developed lesson plans and conducted practical experiments
  • Early experience in communication, patience, and breaking down complex concepts
  • Unique background that brings analytical thinking and teaching mindset to technology leadership

Education

Publicis Sapient India Leadership Academy

Graduate Transformational Leadership Program โ€” Digital Business Transformation

Mar 2018 โ€“ Mar 2019

Magadh University

B. Sc. Hons. โ€” Physics

Jan 1996 โ€“ Jan 1999

Indira Gandhi National Open University

Certificate in Computing โ€” Computer Science

Jul 1999 โ€“ Jul 2000

Mother's International School

CBSE

Jan 1993 โ€“ Jan 1995

Don Bosco, Patna

ICSE โ€” Science

Jan 1983 โ€“ Jan 1993

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