AI
Real-time AI lead management
Lead management for agents with AI-driven grouping and real-time alerting.
85% adoption93% RCR
Senior Engineering Manager · Agentic AI, Platforms & Consumer Products · Singapore
Tanmoy
Tanmoy
Bhattacharjee
I lead teams that put agentic AI into production: a custom MCP server, a custom AI harness that finds system-wide root causes, fine-tuned models, RAG, guardrails and cost-aware model routing. 13+ years in software, 6+ years managing engineering teams, currently leading a ~14-person org across 3 teams at PropertyGuru, with a consumer-product record in search, lead conversion and IPO-critical growth.
Agentic AIAI HarnessCustom MCPLangChainRAGFine-tuned modelsGuardrailsModel routing
85%adoption, AI lead management
~85%of listing moderation by AI
~30%faster bug fixes (custom MCP)
15–20%faster feature delivery
13+years in software
6+years managing teams
// what I'm building
Agentic AI in production
Not demos: AI systems that run inside a real marketplace, with the harness, tooling, guardrails and cost controls around the models.
Custom MCP server
Built and rolled out a custom PropertyGuru MCP so coding agents (Claude, GitHub Copilot, OpenCode) work with company context and tools across the engineering org.
~30% faster bug fixes15–20% faster delivery
Custom AI harness
Built from scratch for PropertyGuru use cases: aggregates and analyzes logs, runs tokenised search, connects the dots across systems and works out a system-wide root cause.
Log analysisTokenised searchSystem-wide RCA
LangChain search & fine-tuning
Built the intelligent search system on LangChain with fine-tuned models. AI Search experiments improved conversion rate per user.
LangChainFine-tuned models
Production LLM platform
RAG over vector databases, guardrails for sensitive data, and LLM cost managed with smart model routing using Jev.
RAGGuardrailsModel routing
AI products at scale
Real-time AI lead management, AI listing creation, and an image moderation engine fine-tuned on property images.
85% adoption, 93% RCR62% adoption, 84% RCR~85% moderation by AI
AI governance
AI advisory board member: company AI direction, governance, budget, tooling, and guardrails for sensitive data. Helped adapt hiring for the AI era.
Next bets
AI home valuation with agent recommendation, planned as a monetization stream, and AI agent moderation and verification (72% accuracy).
// what I bring
Skills & toolkit
Leadership, AI and platform depth, with the hands-on engineering background to make good technical calls.
Leadership
Engineering Strategy & VisionOrg Design & ScalingHiring & Team BuildingCoaching & MentorshipPerformance & CompensationOKRs (6-week cycles)Budget OwnershipVendor ManagementBuild vs BuyDistributed Teams
AI & LLM
Agentic AIAI HarnessMCP (custom)LangChainLLM ProductsRAGModel Fine-tuningVector DatabasesGuardrails & AI GovernanceModel Routing (Jev)LLM Cost OptimizationAI-assisted SDLCClaudeOpenAIGemini
Platform & Architecture
System DesignMulti-tenant ArchitectureMicroservicesREST & GraphQLOAuth2 & Token AuthPlatform EngineeringDeveloper Experience (DORA, SPACE)SOC 2 & PDPA
Cloud & Reliability
AWSGCPKubernetesDockerCI/CD (GitHub Actions, Jenkins)DatadogKibanaSentryOn-call via Squadcast
Languages & Frameworks
TypeScriptJavaScriptNode.jsNestJSReactNext.jsJavaPython
Product & Growth
A/B Testing (Statsig)SegmentBrazeLife Cycle MarketingSEOProduct, Design & Data PartnershipTDD · Trunk-based
// career
Experience
From backend platforms at eBay/PayPal to healthcare APIs at Philips to leading AI-native product engineering at PropertyGuru.
Feb 2019 — Present
Senior Engineering Manager, APAC
PropertyGuru · Singapore
Feb 2019Software Engineer
Aug 2020Senior Software Engineer
Nov 2020Tech Lead · 2 teams
Apr 2022Engineering Manager
Sep 2024Senior Engineering Manager
- Built a custom AI harness from scratch (log aggregation and analysis, tokenised search, system-wide root cause), the intelligent search system on LangChain with fine-tuned models, and a fine-tuned image moderation engine that handles ~85% of listing moderation.
- Lead a ~14-person org across 3 teams (peak ~21) in Singapore, India and Malaysia, with vendors in Vietnam and Europe; built 3 teams from scratch and hired 15+ engineers and managers.
- Grew talent with 6 internal promotions to Tech Lead / Lead Engineer and developed 1 engineering manager, keeping attrition under 5%.
- As an AI advisory board member, set company AI direction, governance, budget, tooling and guardrails for sensitive data.
- Drove AI-native engineering with a custom PropertyGuru MCP, GitHub Copilot, Claude and OpenCode: ~30% faster bug fixes, 15–20% faster feature delivery.
- Designed multi-tenant systems across 6 brands in 4 countries; raised deployment frequency from once every two weeks to 2–3 per week; ~85% of legacy PHP retired.
- Set yearly vision and quarterly strategy, executed through 6-week OKR cycles; own budgets for salaries, AI tooling, mapping solutions and contractors.
Apr 2016 — Jan 2019
Tech Lead, Full Stack
Philips
- Led a 6-member distributed team.
- Designed and implemented APIs for patient, care-provider and physician management for Hospital to Home, serving ~80,000 patients.
- Built a population-health data aggregation platform that helps hospitals analyze value-based care (launched Dec 2018); extended German support for the WellCentive launch in Rostock.
Feb 2015 — Mar 2016
Senior Backend Developer
HomeLane
- Built the pricing engine, a token-based auth service with Google and Facebook OAuth2, and search, list and product-detail APIs.
- Built project aggregation APIs and pre-signed URL APIs for secure artifact upload and download on AWS.
Jun 2013 — Feb 2015
Backend Developer, Platforms
eBay / PayPal (eBay Inc.)
- Built batch as a service, replacing per-use-case batches with a shared service and reducing idle computation cycles.
- Managed application-level routing using ESB; packaged platform-level functionality as dependency libraries.
// shipped
Selected projects
Products and platforms I've led or built, with measured outcomes.
AI
AI listing creation
Auto-generated descriptions, image moderation, tagging and enhancement, plus auto-generated video with voiceover.
62% adoption84% RCR~85% moderation by AI
AI · DevEx
Custom PropertyGuru MCP & AI-native SDLC
Rolled out a custom MCP alongside GitHub Copilot, Claude and OpenCode across engineering.
~30% faster bug fixes15–20% faster delivery
AI · Platform
Production LLM platform
RAG, vector databases, MCP and guardrails, with LLM cost managed through smart model routing using Jev.
RAGGuardrailsModel routing
AI · Trust
AI agent moderation & verification
AI moderation and verification of real estate agents on the marketplace.
72% accuracy
0 → 1
Home Owner Solutions & AI home valuation
Took Home Owner Solutions from 0 to 1; launched an AI home valuation and agent recommendation system.
0 → 1Monetization bet
Growth
Enquiry revamp & WhatsApp lead flow
Re-architected the end-to-end lead submission journey with PropertyGuru in the middle of the WhatsApp flow.
+7.6% lead volume~USD 38K/month saved
IPO
Listing Performance Insights & SEO
IPO-critical agent offering, plus Bahasa Melayu support for Malaysia that grew market share.
~4% subscription uplift1.4x adoption MoM~7% organic traffic
Consumer
Search & consumer experience
New search, relevant results, Google One Tap sign-in, and agent ratings and reviews.
+2.8% CTR+1.7% conversion+7% logged-in users+4% acquisition
Platform
Multi-tenant marketplace platform
One platform unified across PropertyGuru brands, eliminating custom releases per brand.
6 brands4 countries
DevEx
React UI kit & legacy modernisation
A React UI kit on Next.js that sped up releases and helped retire the legacy PHP stack.
2–3 deploys/weekfrom 1 per 2 weeks~85% PHP retired
Cloud
Communication & preferences services
Central REST microservices with multiple gateway support; AWS cost cut by right-sizing Kubernetes pods, under SOC 2 and PDPA.
MicroservicesKubernetesSOC 2 · PDPA
Personal · Game
Joy's Island
A birthday treasure hunt game I built for my wife: walk a winding island road, solve 32 puzzle chests and unlock Heart Castle. Vanilla JavaScript on canvas, installable as a phone app, with photos encrypted with AES-GCM and unlocked in the browser.
JavaScript + Canvas32 puzzlesIn-browser encryption
Philips
Hospital to Home & population health
Patient, care-provider and physician APIs, and a population-health data aggregation platform for value-based care.
~80,000 patientsLaunched Dec 2018
eBay / PayPal
Batch as a service
Replaced individually built batches with one shared service, reducing idle computation cycles.
Shared platformESB routing
HomeLane
OAuth2 auth & pricing engine
Token-based authentication with Google and Facebook OAuth2, a pricing engine and product catalog APIs.
OAuth2Catalog APIs
// beyond the day job
Recognition & learning
Patents, publications, open source and continuous learning.
Patent application (Philips)
AI-Enabled Personal Healthcare Companion – an E2E Solution. IP ID 82187; Submission ID 2017ID05305.
IEEE publication
A Cost Effective Solution for Control of a Mobile Embedded System Using GPRS (ISBN 978-1-4673-1850-1).
Open source
swagger-ui-express-updated (npm) · Bug fix: OAuth2-Facebook in SocialAuth plugin · Correction: Virtualenvwrapper (OpenCV prerequisite).
B.E., Computer Science & Engineering
PSG College of Technology (Anna University) · 2009 – 2013 · CGPA 8.95
Certifications
DeepLearning.AI (7 courses) · Google AI (10 badges) · Microservices Software Architecture: Patterns and Techniques · Leadership Skills Training: Become an Inspiring Leader! · Leadership: Practical Leadership Skills.
Languages
English, Bengali, Hindi
// let's talk
Building something ambitious?
I'm always happy to talk about engineering leadership, AI products and scaling teams.