Freelance / Fixed scope
A working backend for your MVP in 3 weeks.
Fixed scope, fixed price, and you own the code. One senior engineer, no handoffs. Node.js, TypeScript and Java/Spring Boot.
What I build
Pick the shape of help you need.
The main package
MVP Backend Sprint
A working backend for your MVP in 3 weeks.
- Fixed scope
- Fixed price
- You own the code
- One senior engineer, no handoffs
Who it is for
Founders and small product teams with a validated idea who need the backend built properly and fast, without hiring a team.
Timeline: 3 weeks for a typical MVP scope
Price: Fixed price, quoted after a 20 minute call
What is included
- API design and database schema
- Authentication and role based access
- Core endpoints and background jobs
- Automated tests on the critical paths
- Docker, CI/CD and a production deploy
- Docs, a runbook and a handover walkthrough
Your own chatbot backend
Who it is for
Teams that tried an off-the-shelf chatbot tool and hit its limits: rigid flows, per seat pricing, and your data in someone else’s cloud.
What you get
A chatbot backend you own and can shape: structured prompts, conversation state and memory, and real integrations into your systems. The same foundation I built Zigchat and its Bot Creation API on.
Already have a backend?
If it is slow, flaky or hard to deploy, a 1 to 2 week audit finds the cause and ranks the fixes by impact.
Ask about an audit →Services
Everything above comes together from this list.
Backend and API Development
Building the engine that runs behind an app or website, so it works fast, handles lots of users, and does not break.
LLM and AI Integration
Adding AI features into an existing app or website, like a chatbot that actually answers customers, or smart automation that saves staff time.
Backend and Architecture Audits
Reviewing an existing system to find what is slow, broken, or about to break, then fixing the root cause instead of a quick patch.
Workflow and AI Automation
Automating repetitive manual work, like data entry or follow ups, using scripts and AI so people do not have to do it by hand.
Full Stack Delivery
Building both what the customer sees, the app or website, and everything running behind it, as one complete package.
DevOps and Cloud Infrastructure
Setting up and managing servers and cloud hosting, AWS, GCP, Azure, Cloudflare, or custom infra, so the app stays online, fast, and secure.
QA and Test Automation
Testing software thoroughly before it goes live, and setting up automatic checks, so bugs get caught before customers ever see them.
Background
- 4+ years of professional backend and full-stack engineering
- Built Zigchat: a no-code chatbot SaaS (Node.js, Express, TypeScript, SQL, NLP)
- Open-source contributions to Rocket.Chat
- Previously a tech lead on a flagship SaaS product
Stack
How I work
// async-friendly, ~4 hours (US Eastern mornings) overlap with US time zones
Intro call
A 20-minute call to understand the problem, not to pitch you. We figure out together if this is a fit.
Scoped proposal
A written proposal with fixed milestones and deliverables, you know what you’re getting and when before any work starts.
Weekly demos
Working software, shown weekly. No black-box stretches where you’re left guessing what’s happening.
Handover with docs
Clean handover: documented code, a runbook for what you own now, and a walkthrough, not a project that only I understand.
Selected work
all projects →Kaizex: Marketing Operating System
Problem
Content teams needed real conversational automation, not a scripted bot, running across a website widget and WhatsApp Business, with no existing tool offering content intelligence or a usable builder.
What I built
A visual, node-based pipeline builder (21+ node types) that drives real conversations across channels, landing in one unified inbox regardless of where the message came from. BYO-AI across five provider adapters.
LeadGen Pro: AI Lead Generation Engine
Problem
B2B lead generation at any real volume gets expensive fast once you’re paying per API call for qualification and outreach copy.
What I built
A fully self-hosted pipeline: multi-source scraping, SHA-256 + fuzzy deduplication, and a local LLM (Mistral 7B via Ollama) doing two-pass qualification and personalised outreach, zero recurring AI cost.
Enterprise SSO Security Portal
Problem
Growing orgs with separate passwords per internal app were accumulating credential risk and multi-hour manual onboarding for every new hire.
What I built
A multi-tenant OpenID Connect authorization server with tenant isolation enforced at the data layer, custom JWT claims, PKCE support, and an admin dashboard for non-technical provisioning.
FAQ
What kind of engagement do you take on?
Fixed-scope projects with defined milestones, or ongoing hourly work once we’ve established a working rhythm. We’ll agree on which fits before any contract.
What time zone are you in, and how much overlap can we get?
I'm based in Jaipur, India (IST, UTC+5:30). Expect roughly 4 hours (US Eastern mornings) of real-time overlap with US business hours, plus async-friendly communication the rest of the day, written updates, recorded demos, and async code review so nothing waits on a live call.
Who owns the code once the project is done?
You do, fully. Everything built under the engagement, code, docs, infrastructure configs, is yours on delivery. No retained rights, no licensing strings.
Can you sign an NDA?
Yes. Happy to sign yours, or I can send a standard one if you don’t have one ready.
Tell me about the project
A few lines is enough to start. I'll reply with questions or a quote.