5+ WebSocket Jobs in Delhi, NCR and Gurgaon | WebSocket Job openings in Delhi, NCR and Gurgaon

About the Role

We are looking for a Senior Android Engineer with deep React Native expertise to build and own the trading

experience on Android — real-time data, interactive charting, fluid interactions, and rock-solid performance. What We’re Looking For

You have shipped production React Native apps that handle real-time data streams, complex UI states, and

performance-sensitive rendering. You understand the Android platform deeply — native modules, bridge

performance, and platform-specific behaviour. Ideally, you have worked on trading, fintech, or data-intensive

mobile products. You take ownership of your features end-to-end, care about code quality, and are comfortable

driving technical decisions independently. What You’ll Do

• Own the mobile trading experience on Android — architecture, performance, and end-to-end quality. • Build and optimize real-time data rendering — WebSocket lifecycle management, efficient list rendering, and minimal re-renders for streaming data. • Integrate complex WebView-based components with bidirectional JavaScript bridge communication. • Collaborate with product and design to deliver polished, intuitive interfaces for a financial product where

trust and clarity are paramount. • Define mobile engineering standards — component architecture, state management patterns, testing

strategy, and performance benchmarks. • Drive code reviews, mentor team members, and champion best practices across the mobile team. • Participate in stabilization and release cycles — profiling, device matrix testing, and regression analysis. Must-Have

• 4+ years React Native experience with production apps on Google Play Store. • Strong TypeScript skills and deep understanding of React Native internals — bridge, native modules, and

performance optimization. • Experience with real-time data handling — WebSockets, efficient UI updates for streaming data, and

state synchronization. • Experience integrating WebView-based components with JS bridge communication. • Proficiency with state management at scale (Redux, Zustand, or MobX).

• Experience with push notifications (FCM), deep linking, and complex navigation patterns. • Strong debugging skills — Flipper, React DevTools, native crash analysis, and performance profiling. Nice-to-Have

• Prior experience building trading, brokerage, or fintech mobile apps. • Experience with charting library integration in mobile apps. • Knowledge of server-driven UI (SDUI) patterns. • Experience with feature flags, A/B testing frameworks, and app modularization. • Familiarity with native Android development (Kotlin) for bridge modules. Tech Stack

Framework React Native

Language TypeScript / JavaScript

State Management Redux / Zustand

Real-time WebSocket, SSE

Charting Charting library via WebView bridge

Testing Jest, Detox (E2E), device matrix testing (Android 10+)

.NET Core Backend Developer (API Developer)

📍 Location: Gr. Noida | 💼 Type: Full-time | 💰 Experience: 2–5 years

We’re hiring a .NET Core Backend Developer skilled in API development and WebSocket-based real-time communication. You’ll work on building scalable, secure, and high-performance backend systems with cloud integration.

🔧 Responsibilities

• Develop and maintain RESTful APIs using ASP.NET Core (C#)
• Build WebSocket / SignalR modules for real-time updates
• Work with EF Core / Dapper / SQL Server for backend data operations
• Implement JWT / OAuth2 authentication
• Create background worker services for sync and notifications
• Manage Azure App Services, Queues, and CI/CD pipelines

💡 Skills Required

• .NET Core / ASP.NET Core Web API
• WebSocket / SignalR
• C#, EF Core, LINQ, Dapper
• SQL Server / MySQL
• JWT, OAuth2, Swagger, Postman
• Azure Cloud, CI/CD, Git, Microservices

🚀 Nice to Have

• Experience with Docker / Kubernetes / RabbitMQ
• Familiarity with frontend integration (React/Angular)
• 
  

#DotNetCore #BackendDeveloper #APIDeveloper #Hiring #CSharp #EntityFramework #TechJobs

Job description:

We’re Hiring: .NET Developer

Location: Greater Noida

Experience: 3–6 Years

Budget/CTC: Negotiable

Employment Type: Full-time

About the Role

We are looking for a skilled .NET Developer with strong expertise in API development, backend engineering, and WebSocket/real-time integration. Candidates with fintech domain experience (payments, banking, insurance, money transfer, or related financial systems) will be highly preferred.

Key Responsibilities

• Design, develop, and maintain robust backend systems using .NET technologies
• Build and integrate RESTful APIs and WebSocket-based services
• Work closely with frontend teams to ensure seamless communication
• Optimize application performance and ensure scalability
• Implement secure coding practices, especially for financial data transactions
• Collaborate with cross-functional teams to deliver high-quality solutions

Requirements

• Strong proficiency in .NET Core / ASP.NET
• Hands-on experience with API development & integration
• Knowledge of WebSocket protocols, SignalR, and real-time communication
• Experience with databases (SQL/NoSQL)
• Familiarity with cloud platforms (Azure/AWS) preferred
• Strong problem-solving and debugging skills
• Fintech experience is a plus (e.g., payment gateways, UPI/NEFT/RTGS, wallets, insurance platforms, banking systems, transaction dashboards)

Job Type: Full-time

Job Title : Python Developer - Web3 (Mandatory) & Trading Bot Creation (Optional)

Experience : 2+ Years

Location : Noida (On-site)

Working Days : 6 Days WFO (Monday to Friday - WFO & Saturday - WFH)

Job Type : Full-time

Mandatory Skills : Python, Web3 (web3.py/ethers), smart contract interaction, real-time APIs/WebSockets, Git/Docker, security handling.

Responsibilities :

• Build and optimize Web3-based applications & integrations using Python.
• Interact with smart contracts and manage on-chain/off-chain data flows.
• Ensure secure key management, scalability, and performance.
• (Optional) Develop and enhance automated trading bots & strategies.

Required Skills :

• Strong experience in Python development.
• Proficiency in Web3 (web3.py/ethers) and smart contract interaction.
• Hands-on with real-time APIs, WebSockets, Git/Docker.
• Knowledge of security handling & key management.
• (Optional) Trading bot development, CEX/DEX APIs, backtesting (pandas/numpy).

Key Responsibilities:

• Rewrite existing APIs in NodeJS.
• Remodel the APIs into Micro services-based architecture.
• Implement a caching layer wherever possible.
• Optimize the API for high performance and scalability.
• Write unit tests for API Testing.
• Automate the code testing and deployment process.

Skills Required:

1. At least 3 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
2. Excellent hands-on experience using MySQL or any other SQL Database.
3. Good knowledge of MongoDB or any other NoSQL Database.
4. Good knowledge of Redis, its data types, and their use cases.
5. Experience with graph-based databases like GraphQL and Neo4j.
6. Experience developing and deploying REST APIs.
7. Good knowledge of Unit Testing and available Test Frameworks.
8. Good understanding of advanced JS libraries and frameworks.
9. Experience with Web sockets, Service Workers, and Web Push Notifications.
10. Familiar with NodeJS profiling tools.
11. Proficient understanding of code versioning tools such as Git.
12. Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
13. Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
14. Experience building a large scale social or location-based app.