Duo Stack — full stack software engineering

Duo Stack

A two-person senior team that designs and ships complete digital products.

ProductEngineering

From the first idea to a live product real customers use — end to end. Two senior engineers, direct communication, fast decisions, full ownership of the outcome.

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YEARS COMBINEDEXPERIENCE
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PRODUCTSSHIPPED
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SENIOR ENGINEERS,ZERO HAND-OFFS
Platforms, mobile apps, real-time systems
Python, TypeScript, AI, cloud

What we do

Web platforms & business tools

Custom platforms that replace spreadsheets and manual processes with one reliable, easy-to-use system.

Mobile apps

Cross-platform apps with bookings, online payments and polished experiences — taken all the way to the App Store.

AI & automation

Smart search, assistants and content generation folded into products to save time and cut manual work.

Cloud & reliability

Secure hosting, setup and reliability so products run smoothly, stay safe, and grow with the business.

Selected work

Non-profits

Financial Management & Compliance Platform

One system that keeps non-profits audit-ready all year, instead of scrambling at year-end.

  • Donations, donors, grants, budgets, expenses, advances and vendor payments in one connected platform.
  • Multi-level approval workflows with a complete, tamper-proof history of who changed what.
  • Statutory compliance reporting plus one-click export into existing accounting software.

Business impact: Continuously audit-ready, lower compliance risk, and clear visibility into where every rupee goes.

Python · PostgreSQL · Nuxt/TypeScript · Docker

Construction

Vendor, Payment & Workforce Platform

Replaced spreadsheet chaos with one auditable system.

  • All vendor contacts, item catalogues and payments organised with powerful search and Excel/PDF export.
  • Every payment tracked against the right vendor and site with automatic reference codes.
  • Role-based secure logins and a full history of every change for accountability.

Business impact: A single source of truth for the owner, with every payment traceable end to end.

FastAPI · PostgreSQL · Angular · Audit logging

SaaS

In-App Customer Onboarding, Powered by AI

Lets software companies teach users inside their own product, not in a help centre.

  • Automated pipeline turning uploaded video lessons into transcripts, titles, summaries and chapters.
  • Semantic search and an AI assistant answering questions from that company's own lessons only.
  • Automatic course assembly tailored to each user's role and goals.

Business impact: Faster onboarding, fewer support tickets, and engaged customers — without hand-written manuals.

Node.js · LLM integration · Semantic search · Multi-tenant cloud

Computer vision

Real-Time Video Analytics Platform

Turns live camera feeds into instant, actionable insights.

  • Processed incoming camera and data streams in real time.
  • Live dashboards where insights update as they happen.
  • Packaged for easy, reliable deployment.

Business impact: Raw camera data became decisions teams could act on immediately — delivered a week ahead of schedule.

Python · Kafka · Socket.io · React · Docker

Retail

Enterprise Backend for a Global Brand

The behind-the-scenes engine powering core operations at scale.

  • Core services that many teams and systems depend on every day.
  • Built for speed, security and very large scale.
  • Automated release processes for dependable updates.

Business impact: A dependable, high-performance backbone at global scale.

Enterprise API design · Performance & security · CI/CD

Social impact

Automation & Internal Tools

Custom tooling for an animal-welfare non-profit based in Paris.

  • Automation and internal tools that simplified daily workflows.
  • Processes made more robust, reliable and easy to scale.

Business impact: More time on the mission, less on admin.

Python automation · Internal tooling · Cloud deployment

Why work with us

End-to-end ownership

Concept to live product — design, build, payments, hosting and launch. One accountable team.

Direct & senior

Two senior engineers working directly with you. No account managers, no lost details.

Business-first

We care about the result for your business, not just the code. Every project is framed by the value it created.

Proven & reliable

Complex, real-world products shipped — sometimes ahead of schedule — with predictable delivery.

Easy to work with

Comfortable across time zones, with clear and proactive communication.

No limits on tools

Not tied to a stack or industry. We learn the domain, pick the right tools, and deliver.

What people say

“
His dedication, ownership and collaborative mindset stand out. Despite my non-technical background, he took the time to explain complex processes in simple terms, ensuring I was always in the loop.
— Product lead, non-profit finance platform
“
A very sharp and speedy developer — a pleasure to work with in a fast-paced environment. Excellent command over the codebase. Hands down one of the best developers I've collaborated with.
— Fellow developer & collaborator
“
Exceptional technical skills and the ability to execute a project seamlessly, with meticulous attention to detail and a real dedication to high-quality results.
— Engineering collaborator
“
A rare ability to break down complex topics into clear, actionable steps. Rock-solid technical knowledge, patient and clear in communication, always professional.
— Data & analytics collaborator

Let's work together

We'd love to hear what you're building — a fresh idea or an existing product that needs a reliable team.

Email

axaypatoliya2222@gmail.comanikethtsts@gmail.com

Phone / WhatsApp

+91 99248 66800
+91 83173 56612

Based in

India (IST) — flexible hours, comfortable across overseas time zones.

Duo Stack

Full stack · Software engineering · © 2026