Hi, I'm Sudipta
Software engineer in Auckland. I build backends for AI products, currently voice agents that answer the phone at medical clinics.
SG

About

I'm a software engineer in Auckland. I've been building backends for about ten years, mostly for systems that have to answer while someone is waiting.

Right now I'm at Simbie AI, building the Python backend behind AI voice agents that pick up the phone at medical clinics. I also work on TimeTackle, a calendar analytics platform I've been building since 2020.

Before New Zealand I spent seven years at Brain Station 23 in Dhaka and left as a Staff Software Engineer. Along the way I led AXAR AI, an open-source agent framework, and taught React and AWS to two bootcamp cohorts.

I'm finishing an MSc at Unitec on detecting Parkinson's from a voice recording. Same signal I work with all day, different question.

Open to senior backend, ML or AI engineering roles in New Zealand.

Work Experience

Building AI voice agents for healthcare clinics. Backend work in Python on the call platform: appointment scheduling, patient intake, EHR integrations with Cobalt and Abacus, and a self-hosted FHIR stack on Medplum. Isolated the Celery task queues and right-sized the API workers, cutting call exports from 25-30 minutes to about one minute and unblocking every other API-triggered task behind them. This is the same ground my MSc research covers from the other side: Simbie is the production pipeline that captures clinical voice at scale, and my thesis is what you can learn from that signal.simbie.ai

I had already been building this product for five years through Brain Station 23 before joining the company directly. Java and Spring Boot backend. Recent work: the Clio practice-management integration, built around a provider-agnostic Matter entity and service layer so the next provider drops in without touching the call sites; consolidating the Google Calendar and Outlook OAuth installation flows into one hardened path; clock-in/clock-out; and dynamic auto-tagging rules.timetackle.com

One of four instructors on a four-month front-end bootcamp — 16 live classes, weekly assessments, and a mid-term and final project. I owned the React module and taught it as four two-hour classes: components and JSX, then routing and state, then custom hooks and composition, then APIs, Context and Redux. I wrote the slides and a worked codebase for each class, which are public at github.com/uaday/learnReact.hdnb.net

Wrote and taught the Cloud Computing with AWS section of Bohubrihi's full stack web development career track, alongside my day job. Bohubrihi is one of the larger online learning platforms in Bangladesh, and the track is a six-month programme aimed at people moving into their first developer role.bohubrihi.com

Joined as a Software Engineer, left as Staff Software Engineer. For most of those years I owned the Tackle backend end to end and led the team building it, including the queue system the rest of the platform ran on and the integrations into Salesforce, HubSpot, Deel and ClickUp. I also led AXAR AI, halved the GCP bill by moving services to Cloud Run, and roughly doubled Node.js throughput with caching and query work. Earlier on I was on Meed, a US social banking app, where I built money transfer and rewards.brainstation-23.com

Full-stack and mobile development for NGO and enterprise clients, including quality-control tooling for BRAC's Human Rights and Legal Aid Services and a care-management app for SAJIDA Home Care.

Skills

React
JavaScript
TypeScript
Java
Spring Boot
Python
Node.js
Next.js
NestJS
PostgreSQL
Redis
Celery
Docker
AWS
GCP
LLM Agents
RAG
MCP
Machine Learning
Deep Learning
Speech & Audio ML
PyTorch
scikit-learn
Pandas
Model Evaluation
FHIR
OpenTelemetry
Selected Work

Things I've shipped

A few projects I've worked on recently — an open-source agent framework, production voice agents in healthcare, and integration work on a calendar analytics platform.

AXAR AI

Open-source TypeScript framework for building production agents — type-first, model-agnostic, with explicit control instead of hidden magic. 163 stars. I built the release pipeline that publishes to both npm and JSR, added Prettier and coverage to CI, and drove the rename from axar-core to axar across the packaging workflows.

TypeScript
LLM Agents
OpenAI
Anthropic
Gemini
CI/CD
npm
JSR

Simbie AI — healthcare voice agents

An AI receptionist for medical clinics: answering calls, scheduling appointments and handling patient intake. I work on the Python backend — telephony, EHR integration, and the task queues behind it. Isolating heavy Celery tasks and right-sizing the API workers took call exports from 25-30 minutes down to about one minute.

Python
Celery
TypeScript
Next.js
FHIR
Medplum
AWS CDK
OpenTelemetry

TimeTackle

Calendar analytics and time tracking for teams, on a Java and Spring Boot backend. I have worked on this product since 2020, first through Brain Station 23 and directly since March 2025, and built most of what runs today: the core queue system, reporting and charting, workflow automation, Meeting Health, the tagging engine, and the integrations into Salesforce, HubSpot, Deel, ClickUp and Clio. Along the way I halved the GCP bill by moving services to Cloud Run and roughly doubled Node.js throughput with caching and query work.

Java
Spring Boot
TypeScript
React
Node.js
PostgreSQL
Redis
GCP
OAuth
Google Calendar API
Microsoft Graph

Hightime AI

An AI sales workspace for people who live in back-to-back calls. I led the build. It ships as a desktop app across every OS, hooks into Zoom, and turns each call into something useful: transcription, then text analysis over what was actually said, then GPT-3.5 Turbo predicting the follow-up and offering it as one click. The point was to cut the admin tail off every meeting.

React
Node.js
Electron
Java
Spring Boot
GPT-3.5 Turbo
GCP
Serverless
Zoom API
CI/CD

Meed Banking Club

A US social banking app that put checking, a line of credit and savings behind one balance and paid cash rewards on spending. At Brain Station 23 I built the money transfer module and the rewards program, then added the MeedTravel and MeedCover products on top.

React
Ionic
Node.js
JavaScript
REST API
Contact

Get in Touch

I'm open to senior backend, platform and AI engineering roles in New Zealand. The fastest way to reach me is email — I read everything and reply to anything that isn't a mass mailout.