Krishnaraj Venkatesan

About Me

I’m a Senior Lead Software Engineer at Chargebee with 12+ years of experience spanning full-stack product development, distributed systems, and GenAI-based platform architecture. I build resilient infrastructure, intuitive developer tools, and intelligent systems that drive outcomes for global SaaS platforms.

My work blends architectural depth with hands-on execution—from frontend frameworks and backend orchestration to observability, multi-region scaling, and AI-first platforms. I’ve led major initiatives like ERP integration frameworks, async job engines, and LLM-powered assistants.

At Chargebee, I architected and own Chargebee Copilot, an AI-native assistant that automates billing and support workflows. It integrates OpenAI, Anthropic, LangGraph, LangChain, Pinecone, and Langfuse to deliver contextual, agent-driven RAG pipelines. The result: 30% reduction in ticket inflow and 50% faster first response times.

I also led the architecture for our ERP & CRM Integration Platform, reducing development effort by 80% and enabling 10+ connector rollouts (including NetSuite, QuickBooks, ZohoCRM, and HubSpot). I bring deep domain expertise in Accounts Receivables and billing automation, especially within NetSuite ecosystems.

I operate at the intersection of platform engineering, AI product thinking, and developer experience—taking 0→1 ownership of complex systems with clarity, empathy, and execution rigor.

Outside of Chargebee, I co-founded Revmonk—a real-time lead intelligence tool that enriched high-intent web traffic and triggered auto-personalized outreach for marketing teams. I owned the entire stack (tracking, enrichment, orchestration, campaigns). We onboarded 50+ trial users and 2 paying customers before sunsetting due to operational costs—sharpening my product instincts and founder mindset.

I also contribute as a mentor within my company, a volunteer with CEG alumni network, and a tech advisor to early-stage startups in my network. I’m part of the API Review Council and engineering hiring committee at Chargebee.

Career Highlights

• 🧩 12+ years of experience across full-stack, platform, and AI engineering, with deep SaaS domain expertise in billing, integrations, and developer tools
• 🧠 Led architecture and end-to-end build of Chargebee Copilot, a GenAI-native assistant that reduced support ticket volume by 30% and accelerated first response time by 50%
• ⚙️ Architected high-scale infrastructure for async processing (50M+ ops/day), plugin-based integrations, and multi-region data migration
• 🔌 Built 10+ ERP & CRM connectors (NetSuite, QuickBooks, ZohoCRM, HubSpot) through a reusable platform; reduced integration dev effort by 80%
• 🚀 Co-founded and engineered Revmonk, a lead intelligence platform with real-time visitor tracking and automated outreach workflows
• 📚 Core contributor to Chargebee’s API Review Council and engineering hiring panels; provide peer mentorship and cross-team guidance on system design

Tech Stack Highlights

• LLM & AI Systems: Architected and productionized AI-native workflows using LangGraph, LangChain, OpenAI, Anthropic, Pinecone, Langfuse, and advanced RAG pipelines
• Search & Retrieval Infrastructure: Designed and tuned vector search systems using Pinecone, semantic embeddings with contextual relevance
• Platform Engineering: Led full-cycle architecture and delivery using Java, Spring Boot, Node.js, Python, .NET, React, Next.js, and NestJS; focused on modular APIs, developer experience, and platform consistency
• Cloud & Infrastructure: Deployed and scaled distributed systems on AWS (Lambda, S3, RDS, CloudFront, Route53, ECS), and Vercel
• Databases & Caching: Architected systems using MySQL, PostgreSQL, MongoDB, and Redis
• Platform Practices: Advocated and implemented best practices around Observability, Scalable Microservices, Event-driven Architectures, and Idempotency Patterns

Experience

Senior Lead Software Engineer – Chargebee

Sep 2017 – Present | Chennai, India

• Led architecture and end-to-end development of Chargebee Copilot, a GenAI-powered assistant that automates billing workflows and customer support using OpenAI and Anthropic models. Designed modular agents and scalable RAG pipelines with LangGraph, LangChain, Pinecone, and Langfuse. Resulted in a 30% reduction in ticket inflow and 50% faster first-response time.
• Architected a distributed job processing framework capable of handling 50M+ async operations/day, with built-in idempotency, retry logic, telemetry, and alerting. Significantly improved system reliability and debugging efficiency for platform teams.
• Designed and led the ERP & CRM integration platform using a plugin-based architecture that standardized data flows with systems like NetSuite, QuickBooks, ZohoCRM, and HubSpot. Reduced integration development effort by 80% and successfully onboarded 10+ connectors across accounting and CRM domains. Acted as subject matter expert in NetSuite AR flow and helped align system design with downstream finance processes.
• Led the design and execution of a global schema migration project to unify and replicate common customer/account data across geographically distributed regions spanning multiple shards. Improved data consistency, isolation, and regional failover support across the platform.
• Built developer-facing reconciliation tools (including Chrome extensions) to help finance users validate and sync invoice data at scale. Improved internal efficiency and reduced manual verification errors.
• Served as core member of Chargebee’s API Review Council, driving consistency, backward compatibility, and governance across all public and internal APIs.
• Active contributor to engineering hiring and mentorship. Participated in senior-level hiring panels and coached engineers transitioning into platform and AI-focused roles.

Senior Software Developer – Travel Republic

Sep 2014 – Aug 2017 | Bangalore, India

• Developed and maintained backend microservices powering flight and hotel bookings for one of the UK’s largest travel platforms; focused on reliability and multi-service coordination.
• Owned the manage-bookings and user dashboard modules, driving improvements in performance and UX.
• Contributed to the platform’s service modernization initiative by migrating legacy APIs to REST-based services and introducing structured logging and error telemetry.

Software Engineer – Bally Technologies

Feb 2013 – Sep 2014 | Bangalore, India

• Built reusable WPF components and UI libraries for enterprise-scale casino platforms, enabling consistent visual interfaces across multiple products
• Developed internal marketing apps and voucher distribution tools used by operations teams across regional casinos in the US and APAC

Featured Projects

🧠 AI & LLM Systems

• Chargebee Copilot – Lead Architect, AI Platform Team
  Designed and led architecture for Chargebee’s GenAI-native assistant using LangGraph, LangChain, OpenAI, Anthropic, and Pinecone. Delivered modular RAG pipelines and custom agents mapped to billing primitives. Reduced ticket inflow by 30% and improved first-response time by 50%.
• MeetBee – Side Project
  Built an AI meeting assistant using Azure, OpenAI, and Chrome APIs. Automatically generated meeting summaries, reminders, and notes via calendar integration. Designed for lightweight Chrome-based productivity.

⚙️ Platform Engineering & Infrastructure

• Job Framework – Core Platform Team
  Architected a distributed task processing engine that handles 50M+ async operations/day. Implemented retries, idempotency, observability, and alerting across job types including invoice generation, sync engines, and notifications.
• Common Schema Migration – Core Platform Team
  Led multi-region data migration of shared customer/account schema across geo-distributed shards. Improved isolation, resilience, and failover preparedness across production workloads.

🔌 Integration Platforms

• Catalyst – ERP Integration Initiative
  Designed a plugin-based framework to integrate Chargebee with tools like NetSuite, QuickBooks, ZohoCRM, and HubSpot. Reduced integration development effort by 80% and launched 10+ connectors. Acted as NetSuite AR domain expert across finance and engineering.
• Chrome Reconciliation Tool – Integrations Platform
  Built Chrome-based extensions to help finance teams validate and sync invoice data across third-party systems. Improved data accuracy, reduced manual reconciliation time, and enhanced operational confidence during audits.

🚀 Startup & Product Experiments

• Revmonk – Co-founder & Engineering Lead
  Built a real-time lead intelligence and outreach automation tool for marketers. Architected the full stack using AWS, Supabase, PostgreSQL, and SendGrid. Enriched high-intent web visitors and auto-triggered personalized email campaigns. Onboarded 50+ trial users and acquired 2 paying customers before sunsetting due to ops costs.
• K JSON Lint – Chrome Extension
  Lightweight formatter and validator for JSON payloads. Designed for developers debugging API responses inside the browser.

Talks & Blog

• 🎙️ Webinar – Behind Chargebee Copilot - Presented architecture and GenAI foundations of Copilot.
• 🧠 Internal Brown Bag – Idempotency & Async Jobs Led a session on job reliability, retries, and platform-scale idempotency patterns.
• ✍️ Blog – Tech articles on platform engineering

Contact

Let’s connect. I’m open to Staff or Principal Engineering opportunities focused on platform architecture, AI systems, and developer infrastructure. I also collaborate on podcasts, panels, and advisory roles for early-stage startups.

Email: krishnarajsiva@gmail.com
LinkedIn: linkedin.com/in/kriznaraj
GitHub: github.com/kriznaraj