i2b Technologies Pvt Ltd

JD: React Native Engineer (Real-Time / Streaming)

Role: React Native Engineer – Real-Time Systems 

We are building real-time, high-scale applications involving chat, streaming, and interactive experiences. We’re looking for engineers who can build performant mobile apps that handle live data, low latency, and production-scale usage.

What You’ll Do

• Build and maintain high-performance React Native applications
• Integrate real-time systems (WebSockets, RTC, live updates)
• Work with SDKs like Agora or similar
• Optimize app performance (FPS, memory, startup time)
• Handle network variability, retries, and offline states
• Collaborate with backend/infra teams on APIs and contracts
• Debug production issues (crashes, latency, memory leaks)

Must-Have Skills

• Strong experience in React Native
• Solid understanding of:
• App lifecycle
• Performance optimization
• Native bridges (Android/iOS basics)
• Experience with:
• WebSockets / real-time updates
• API integration at scale
• Strong debugging skills (Flipper, profiling tools)
• Experience handling production apps with real users

Good-to-Have

• Experience integrating RTC/streaming SDKs like Agora
• Worked on apps with:
• Chat / live streaming / gaming
• Experience with:
• Push notifications
• Background tasks
• Familiarity with analytics and monitoring tools

What We Value

• Engineers who care about performance, not just UI
• Ability to debug real-world issues (not just build features)
• Strong ownership mindset

Job Description: Senior Node.js Backend Developer

Role Overview :

We are seeking an exceptionally skilled and results-oriented Senior Node.js Backend Developer to architect and develop the core platform for our next-generation, mobile-centric platform. This role demands deep expertise in building highly concurrent, asynchronous, and distributed systems designed for massive scalability and ultra-low latency. You will be instrumental in delivering a system that can reliably support millions of users and high-velocity data flow, designed for a cloud-agnostic architecture from inception.

Key Responsibilities

● High-Concurrency Development: Design and implement highly performant and resilient backend services using Node.js (TypeScript/JavaScript), leveraging its asynchronous nature to manage persistent connections and high throughput efficiently.

● Microservices & APIs: Lead the development and maintenance of microservices, focusing on defining and implementing secure, robust, and highly optimized APIs (REST/gRPC) for mobile clients.

● Real-Time Data Flow: Architect and implement real-time, bi-directional data synchronization mechanisms (e.g., WebSockets, dedicated streaming protocols) necessary for instantaneous information delivery across the platform.

● Data Modeling & Persistence: Collaborate on and execute data modeling strategies, integrating with high-volume, low-latency databases (e.g., Cassandra, ScyllaDB, Aerospike) optimized for extremely fast reads and writes.

● Optimization & Tuning: Proactively identify and resolve performance bottlenecks within the Node.js runtime, event loop, and service interactions to ensure exceptional user experience under heavy load.

● Ability to perform Research / POCs & choose the suitable technology.

Required Technical Expertise (3-6 Years Experience Focus)

● Core Node.js & TypeScript: 3-6 years of hands-on, production experience in Node.js, with expertise in modern TypeScript/ES6+ development for large-scale applications.

● Asynchronous Programming Mastery: Deep understanding and practical experience with the Node.js event loop, non-blocking I/O, and advanced asynchronous patterns (Promises, async/await) to maintain high concurrency.

● Distributed Systems & Microservices: Proven experience architecting and operating services within a distributed system/microservices environment, including deployment using Docker and Kubernetes.

● Messaging & Real-Time: Expert knowledge of and implementation experience with message queuing systems like Apache Kafka for event sourcing, and protocols (e.g., WebSockets) for real-time data sync.

● Database Expertise: Deep practical experience working with, tuning, and optimizing at least one NoSQL distributed database (e.g., Cassandra, ScyllaDB, or Aerospike) for extreme performance and horizontal scalability.

● Caching & Statelessness: Expertise in implementing various caching strategies using tools like Redis or Memcached to ensure service statelessness and reduce database load.

Scalability & Performance Expectations

● High Throughput: Services must be capable of processing extremely high volumes of data transactions and managing millions of concurrent connections without degradation in service quality.

● Latency Goal: Achieve and maintain a P95 latency of less than 100 milliseconds for all core, user-facing data operations.

● Cloud-Agnostic Design: Experience designing and implementing services that are abstracted from specific cloud provider dependencies, demonstrating familiarity with cloud-agnostic practices for deployment across AWS, GCP, or Azure.

● Observability: Strong experience leveraging modern observability tools (e.g., Prometheus, Grafana, Jaeger) to monitor, trace, and debug complex, asynchronous, and distributed Node.js applications in production.

Startup Mindset & Delivery Goals

● Extreme Ownership: Demonstrate the ability to take full technical ownership of complex modules, driving them from architectural concept through to stable, optimized production deployment.

● Agility: Possess the adaptability and technical versatility required to thrive in a fast-moving startup environment with continuous deployment and rapid feature iteration.

 Solutions Architect B2B SaaS · Supply Chain & ERP · Hyderabad · Full-time 6–10 Years · Competitive Compensation · Immediate to 30 Days’ Notice This is not a typical architect role. You will own the full solution lifecycle — client conversations → problem definition → architecture → delivery. If you thrive at the intersection of business + technology + execution, this is your role. What You'll Own 01 CLIENT OWNERSHIP Lead requirement workshops and act as the client's primary solution partner. Shape solutions — don't just gather requirements. 02 ARCHITECTURE Design multi-tenant, high-scale B2B SaaS systems across Supply Chain and ERP workflows. 03 BUSINESS ↔ ENGINEERING Convert client needs into clear technical direction. Remove ambiguity for the engineering team. 04 DELIVERY OWNERSHIP Own Workshop → Design → Delivery. Identify risks early and drive solutions before they escalate. What We're Looking For � � Must Have – 6–12+ years in Solution Architecture / Technical Consulting – Proven B2B SaaS product environment experience – Deep domain in SCM / ERP / Manufacturing – Track record of owning outcomes — not just contributing � � Client-Facing Strength – Led solution design workshops solo — not just attended them – Confident with C-level / VP-level stakeholders – Simplifies complexity without losing depth � � Technical Understanding – Cloud architecture, Microservices, APIs, cloud-scale system design – Whiteboard a system in real-time — not just describe it – Strong NFRs: latency, uptime, fault tolerance � � Functional Understanding – Order → Inventory → Warehouse → Fulfillment flows – Connects business processes with system design ⭐ Good to Have – Oracle / SAP full lifecycle implementation – Startup background — thrives with ambiguity – Pre-sales: RFP, scoping, commercial discussions – ERP data flows — beyond surface-level module names - Experience working with US clients Why I2B? – Work directly with founders – Your decisions ship to real clients within weeks – Shape how I2B builds and delivers at scale – Be part of building India's next B2B SaaS story – Experience leveraging AI in solution design (predictive insights, automation, or intelligent decision systems within SaaS/ERP/SCM platforms)