Senior Product Engineer Full-Stack & Mobile

Oddsfitness; New Delhi; Hybrid; INR 1,500,000 - 3,000,000; Full time

Job summary

ODDS Longevity is hiring a Senior Product Engineer to own web, mobile, backend, and AI-powered products. You will make architecture decisions and ship production software with secure, scalable systems.

Ideal candidates have 4+ years shipping production software and strong React, TypeScript, and React Native experience, plus Expo with EAS builds and native iOS/Android knowledge. The role is Delhi-NCR, on-site with hybrid options.

Qualifications

• 4+ years of experience shipping production software.
• Strong experience with React, TypeScript, and React Native.
• Production experience with React Native + Expo including EAS builds.
• Ability to work with native iOS/Android code (Swift/Kotlin).
• Strong PostgreSQL knowledge and API design experience.
• Experience with AI/LLM apps and agents.
• Deep debugging and system-design skills.

Responsibilities

• Own backend systems, APIs, data models, and data workflows.
• Develop React Native mobile apps for iOS and Android.
• Build web apps with React and TypeScript.
• Work on realtime systems using WebRTC and WebSockets.
• Develop AI/LLM apps and AI agents, ensure production reliability.
• Handle production releases, monitoring, and debugging.

Skills

React

TypeScript

React Native

Expo

Swift

Kotlin

PostgreSQL

API design

Data migrations

AI/LLM

WebSockets

WebRTC

Three.js

LiveKit

Tools

Expo / EAS

Node.js

LiveKit

Pipecat

Three.js

Job description

Senior Product Engineer - Full-Stack & Mobile Health Tech

Full-time Delhi-NCR On-site / Hybrid ODDS Longevity

ODDS is building technology for the next generation of premium longevity and preventive healthcare.

About ODDS

We are looking for a Senior Product Engineer who can take ownership across web, mobile, backend, data, and AI-powered products. You should be comfortable making architecture decisions, shipping production software, and ensuring systems are reliable, secure, and scalable.

What You'll Work On

• Backend systems, APIs, data models, and complex data workflows
• React Native + Expo mobile apps for iOS and Android
• Web applications built with React and TypeScript
• Realtime systems using voice, audio, WebSockets, and WebRTC
• AI/LLM applications and AI agent development
• Secure multi-user systems with strong access controls
• Data ingestion, validation, versioning, and auditability
• Interactive data visualisation and 3D experiences
• Production releases, monitoring, debugging, and reliability

Technology Stack

TypeScript React React Native Expo / EAS Node.js Supabase PostgreSQL Python AI / LLMs AI Agent Development LiveKit / Pipecat React Three Fiber

Requirements

• 4+ years of experience shipping production software
• Strong experience with React, TypeScript, and React Native
• Production experience with React Native + Expo, including EAS builds and App Store / Play Store releases
• Ability to work with native iOS and Android code when needed, including Swift and Kotlin
• Strong PostgreSQL knowledge, including schema design, indexing, and Row Level Security
• Experience designing APIs, data contracts, and backend systems
• Good understanding of migrations, versioning, backward compatibility, and production reliability
• Experience building or integrating AI/LLM applications and agents
• Strong debugging, problem-solving, and system-design skills
• Clear written and verbal communication

Good to Have

• WebRTC, WebSockets, streaming audio, or realtime systems
• Native React Native modules or Expo config plugins
• Python data processing
• Three.js / React Three Fiber
• Experience with healthcare, fintech, or other sensitive-data products

What We're Looking For

We want someone who takes ownership beyond writing code.

You should care about what happens in production, how systems fail, how releases are rolled out safely, and how issues are detected and fixed quickly.

If you enjoy building across mobile, web, backend, AI, and realtime systems and want meaningful technical ownership we'd like to hear from you.