Full Stack EngineerONLYQ • narela, India

Full Stack Engineer

ONLYQ • narela, India

23 hours ago

Job description

About ONLYQ

ONLYQ is building the world’s most advanced ultra-slim, clinical-grade health wearable —combining premium materials (ceramic, sapphire, FKM), multi-sensor physiology (PPG, ECG, EDA, Temp, IMU), and real-time AI analytics.

Backed by Cymetree Projects LLP , a high-growth multi-vertical enterprise (USD 340M projected revenue this year), ONLYQ is a self-funded, long-term premium hardware–AI ecosystem with global ambitions.

We’re assembling a world-class team to launch our Gen-1 wristband and mobile app—designed to compete with WHOOP, Oura, Garmin, and Apple.

Role Overview

We are looking for an exceptional Senior Full-Stack Mobile Developer with deep experience in Bluetooth Low Energy (BLE), real-time sensor streaming, and native mobile development (iOS + Android) .

This is a core team, high-ownership role responsible for building the ONLYQ mobile app from scratch—architecture, BLE integration, data pipelines, backend APIs, and production-quality UI.

You will work closely with our firmware, sensor, and AI teams to deliver a world-class health and wellness experience.

What You Will Build

Native iOS and Android apps for ONLYQ (Swift + Kotlin)
High-stability BLE pipeline for PPG / ECG / EDA / Temp / IMU streaming
Real-time data ingestion, processing, caching & cloud sync
Backend API layer (Node.js or Python)
AI / ML model integration (sleep, HRV, stress, readiness)
Beautiful dashboards and wellness visualizations
Secure user authentication, subscription, and cloud services
CI / CD pipelines & scalable architecture for future V2 / V3 hardware

Key Responsibilities

Mobile Development

Build native iOS apps using Swift, SwiftUI, Combine

Build native Android apps using Kotlin, Jetpack Compose

Implement CoreBluetooth & Android BLE stack

Optimize MTU, GATT, reconnection logic, and background sync

Ensure ultra-reliable sensor data capture (5–50 Hz)

Backend & API

Build REST + WebSocket APIs (Node.js or Python)

Implement data storage (PostgreSQL / MongoDB)

Setup cloud infrastructure (AWS / GCP)

Ensure secure data flow & low-latency analytics

Data & AI Integration

Integrate physiological AI models (Python / TensorFlow Lite)

Work with our biosensor engineering team

Implement signal cleaning, annotation & time-series sync

Architecture & Quality

Implement MVVM / clean architecture

Automated testing, CI / CD pipelines

Optimize for battery life, background execution & stability

Deliver smooth, polished UI interactions with animation support

Required Skills

Mobile (Mandatory)

Expert in Swift / SwiftUI / Combine

Expert in Kotlin / Jetpack Compose

Strong experience with BLE GATT communication

Experience with real-time sensor data processing

Experience with background services & multi-threading

Backend

Proficient in Node.js or Python (FastAPI)

Database experience : PostgreSQL or MongoDB

Experience with AWS / GCP / Firebase

Wearable / Health Data

Understanding of HR, HRV, ECG, IMU, Temp, or other biosignals

Experience working with wellness, fitness, or IoT devices

Bonus Skills

Experience with TensorFlow Lite / CoreML

Experience with time-series data & signal processing

Experience building subscription-based apps

Knowledge of Apple HealthKit / Google Fit

Who Should Apply

You are a top-tier developer with a strong engineering mindset

You’ve worked on smartwatch / IoT / fitness apps

You want to build a global premium product from Day 1

You enjoy solving deep Bluetooth, data, and architecture problems

You want ownership—not just a coding job

What We Offer

Work on one of India’s most ambitious consumer health-tech products

High autonomy, fast decision cycles, and a world-class vision

Competitive compensation + performance-based incentives

Opportunity to grow into Engineering Lead / CTO as we scale

Direct access to founders and full creative freedom

Create a job alert for this search

Stack Engineer • narela, India

Related jobs

Full Stack Engineer

Programmers.io • narela, delhi, in

We are seeking highly skilled Senior.Laravel and modern frontend frameworks (Vue.The candidate should have deep technical expertise, leadership ability, and experience architecting scalable web sol...Show more

Last updated: 18 days ago • Promoted

Senior Software Engineer

Programmers.io • narela, delhi, in

Senior AI-Integrated Software Engineer (.Remote until office reopens, Work from Home.We are looking for a dynamic and innovative. The ideal candidate will bring hands-on experience in AI-assisted de...Show more

Last updated: 30+ days ago • Promoted

Full Stack Engineer

ValueLabs • narela, India

ValueLabs is a global technology services company - specializing in next-gen Product development, UX, automation, and analytics. For over 26 years, our 7000+ strong team has nurtured a culture of ex...Show more

Last updated: 26 days ago • Promoted

Full Stack Engineer

Adapts • narela, India

Full-Stack Engineer (Remote) — Join Adapts.Adapts is transforming software maintenance by converting legacy code into comprehensive developer documentation, including specs and diagrams.This innova...Show more

Last updated: 23 hours ago • Promoted

Full Stack Engineer

IIInigence • narela, India

IIInigence is a Los Angeles–based, AI-driven software development company with 7+ years of experience building advanced applications for startups, enterprises, and global brands.We develop custom A...Show more

Last updated: 23 hours ago • Promoted

Principal Full Stack Engineer

AspiringIT • narela, India

Job Title : Principal Full Stack Engineer.We are looking for a highly experienced Principal Engineer to lead architectural decisions, drive technical strategy, and guide engineering teams across mul...Show more

Last updated: 17 hours ago • Promoted • New!

Full Stack Tech Lead- Contract

Gravity Infosolutions, Inc. • narela, India

Job description for Tech Lead Full Stack : .Conducts code review, contributes writing code, proficient in Java + at least one language between Typescript and Python. Basic understanding of Infrastruct...Show more

Last updated: 1 day ago • Promoted

Senior Java Software Engineer

ACL Digital • narela, delhi, in

Responsible for designing and building backend system.Focus on scalable APIs, workflow frameworks, and automation platforms that improve customer and agent experiences. Acts as a strong individual c...Show more

Last updated: 30+ days ago • Promoted

Full Stack Engineer (Founding Team)

Stealth Startup (AI+D2C) • narela, India

We’re building something exciting in the.Build both frontend and backend from scratch (React + Node / Python preferred).Work directly with the founding team to architect the product and tech stack....Show more

Last updated: 30+ days ago • Promoted

Lead Backend Developer+Instructor

Newton School of Technology • Sonipat, Haryana, India

SDE 2 / 3 + Instructor – Backend Engineering and System design.About Newton School of Technology (NST) : .Newton School of Technology (NST), founded by IIT alumni, offers a hands-on B.Tech in Computer ...Show more

Last updated: 21 days ago • Promoted

Senior Full Stack Developer

NUKG Business Solutions • narela, delhi, in

Business, Process & Technology consulting company with niche expertise in the area of US Benefits Administration and Data Management. NUKG's headquarters are based in NJ, USA and the Global Delivery...Show more

Last updated: 4 hours ago • Promoted • New!

Backend / Fullstack Engineer (PHP • Drupal • Python)

Pulp Strategy • narela, delhi, in

Pulp Strategy develops robust platforms, CMS ecosystems, and automated backend systems powering enterprise-level performance. With a focus on productized workflows and digital acceleration, we are s...Show more

Last updated: 4 hours ago • Promoted • New!

SDE + Instructor (DevOps)

Newton School of Technology • Sonipat, Haryana, India

Have you ever wondered what a job where deep diving into the world of CNCF landscape would look like? What if contributing to OSS projects wasn’t a negotiation with your closed source workplace rat...Show more

Last updated: 28 days ago • Promoted

Full Stack Engineer

TIGI HR • narela, India

TypeScript, NestJS, React, and PostgreSQL.The ideal candidate will manage projects end-to-end—from requirement gathering to deployment—while ensuring clean architecture, performance optimization, a...Show more

Last updated: 30+ days ago • Promoted

Full Stack Engineer

Lystloc • narela, India

We’re looking for a passionate and skilled Full Stack Developer to help us build scalable, secure, and high-performance web applications. AWS Serverless technologies, collaborating with UI / UX design...Show more

Last updated: 21 hours ago • Promoted • New!

Generative AI Engineer

Turing • narela, delhi, in

Turing is looking for people with LLM experience to join us in solving business problems for our Fortune 500 customers.You will be a key member of the Turing GenAI delivery organization and part of...Show more

Last updated: 25 days ago • Promoted

Senior Software Engineer (Python, React)

Better Software • narela, delhi, in

Better Software is a product development studio that partners with entrepreneurs and enterprises to launch new initiatives. Many of these products evolve into large-scale systems, and we act as long...Show more

Last updated: 30+ days ago • Promoted

Data Engineer + Instructor

Newton School of Technology • Sonipat, Haryana, India

We are looking for a passionate and experienced.AI concepts, with a strong emphasis on Python programming.You will guide learners in building skills to visualize, analyze, and model data, preparing...Show more

Last updated: 28 days ago • Promoted