Subham Haldar
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AnyTeam — AI-Native Sales Operating System

Backend Engineer, core team · Dec 2024 – Nov 2025

An AI-native B2B sales intelligence platform built from inception to launch on a two-engineer backend team. I scaffolded the service-oriented architecture and built three of its subsystems.

Context

AnyTeam gives account executives real-time insights, stakeholder mapping, and meeting intelligence, integrating deeply with Google Workspace to sync calendars and contacts.

What I built

I scaffolded a domain-layered, service-oriented backend — Node.js, Express, PostgreSQL and RabbitMQ — deployed on GCP as two independently scaled Dockerized services: an API and an async worker.

Within it I owned three subsystems: a Google Calendar and Contacts sync engine for automated relationship mapping; a database-driven scheduler supporting dynamic per-user cron jobs across tenants; and a cross-platform notification system over FCM and APNs backed by a custom rule engine.

Observability

I added structured logging with trace-context propagation and centralized error forwarding, giving cross-system visibility. This is the first project in my work where observability was designed in rather than retrofitted.

Outcome

Launched November 2025 after eleven months, serving hundreds of tenants.

Built with

Node.jsExpressPostgreSQLRabbitMQDockerGCPSequelizeRollbar