Product engineering studio · Hyderabad / Global

Digital products built for the moments that matter.

Onnixa designs and engineers mobile products, real-time platforms, and dependable backend systems—from first architecture decision to launch.

Discuss your product See our experience
NxOne product system
01 / ProductMobile experiences
02 / PlatformAPIs & real-time systems
03 / ScaleCloud, QA & launch

What we deliver

Senior product engineering, end to end.

Engage Onnixa for a focused product phase or for the full journey. Every engagement is shaped around the business outcome—not a preset list of billable tasks.

01

Product foundations

Turn an ambitious idea into a buildable product plan with fewer expensive surprises.

  • Discovery and scope
  • UX flows and prototypes
  • System architecture
02

Mobile products

Ship fast, polished Flutter experiences across iOS and Android from one maintainable codebase.

  • Flutter and Dart
  • iOS and Android
  • Store-ready delivery
03

Platforms and APIs

Build the secure services, data flows, and real-time infrastructure your product depends on.

  • Python and FastAPI
  • Node.js and WebSockets
  • Data and integrations
04

Launch and scale

Move from release candidate to reliable production with testing, deployment, and observability built in.

  • QA automation
  • Cloud and CI/CD
  • Performance hardening

Selected experience

Built in demanding, real-world domains.

These are NDA-safe summaries of experience behind Onnixa. We focus on the problem, engineering scope, and delivery challenge without exposing confidential client details.

01

Mission-critical systems

Response workflows designed for speed and reliability

Mobile and backend experience supporting location-aware operations, time-sensitive events, and resilient communication flows.

Selected scope

Product architecture · Flutter · Maps · Firebase · Real-time events

02

Fintech and Web3

Secure financial experiences without the usual friction

Exchange and wallet product experience spanning live market data, authentication, multi-chain interactions, and user-safe transaction flows.

Selected scope

Flutter · WebSockets · WalletConnect · Biometrics · Node.js

03

Enterprise platforms

Complex operations made clear and manageable

Multi-tenant CRM and operational tooling that turns permissions, workflows, auditability, and reporting into a coherent product experience.

Selected scope

Flutter · FastAPI · PostgreSQL · RBAC · Deployment

Need relevant references for your domain? Ask for a private walkthrough.

How we work

A clear path from ambiguity to production.

You stay close to decisions and working software. No black-box handoffs, inflated ceremonies, or surprise reveal at the end.

  1. 01

    Frame

    Align on users, business goals, constraints, and the smallest valuable release.

    Scope · Product risks · Roadmap
  2. 02

    Shape

    Make critical UX and architecture decisions before they become expensive code.

    Flows · Prototype · Architecture
  3. 03

    Build

    Deliver in visible weekly increments with quality, observability, and feedback built in.

    Working releases · QA · Demos
  4. 04

    Launch

    Prepare stores and infrastructure, harden the product, and support a confident release.

    Deployment · Handover · Support

The studio

Small by design. Senior by default.

Onnixa is a founder-led product engineering studio based in Hyderabad and working globally. It was created for teams that want experienced technical ownership without the layers of a large agency.

Founder Bandhu Sharma brings hands-on experience across Flutter products, backend platforms, real-time communication, fintech, enterprise systems, and production operations. Specialist collaborators are brought in only when the product needs them.

Direct access

Work directly with the senior engineer shaping the product.

Whole-system thinking

Connect product UX, mobile, backend, data, and operations.

Practical ownership

Make trade-offs visible and carry delivery through launch.

Meet the founder

Technology

A focused stack for products that last.

Mobile

  • Flutter
  • Dart
  • iOS
  • Android

Web

  • React
  • Next.js
  • TypeScript
  • Tailwind CSS

Backend

  • Node.js
  • Python
  • FastAPI
  • WebSockets

Cloud

  • AWS
  • GCP
  • Docker
  • CI/CD

Data

  • PostgreSQL
  • MongoDB
  • Redis
  • Firebase

Start a conversation

Bring us the product challenge that cannot stay stuck.

Share the context, the constraints, and the outcome you need. We will respond with honest questions and a practical next step—not a generic sales deck.

hello@onnixa.com