Platform Engineer (Backend)

AiSensy

Gurugram District

On-site

INR 1,500,000 - 2,500,000

Full time

14 days+

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Benefits offered by this job

Fast-paced, growth-oriented startup environment

Opportunity to work on large-scale distributed systems

Product-driven engineering culture with real ownership

Open environment focused on learning and innovation

Job summary

A cutting-edge SaaS platform in Gurugram is seeking a Platform Engineer to design and build scalable backend infrastructure. This high-impact role involves close collaboration with developers and DevOps to create resilient systems and achieve high performance for millions of WhatsApp interactions. Ideal candidates will have over 5 years of experience in software development, strong knowledge of Node.js and MongoDB, and a passion for building distributed systems. Join us in shaping the future of business communication.

Qualifications

5+ years of software development experience, strong backend engineering exposure.
Hands-on experience with Node.js, Express.js, and MongoDB.
Solid understanding of distributed systems and asynchronous programming.

Responsibilities

Design and build internal platforms and infrastructure systems for high-scale messaging.
Architect and implement distributed backend systems for high availability.
Work closely with DevOps on CI/CD pipelines and cloud infrastructure.

Skills

Backend development experience

Node.js

Express.js

MongoDB

Distributed systems design

Problem-solving skills

Cloud environments (AWS)

Education

5+ years of software development experience

Tools

Docker

Git

Job description

AiSensy is a WhatsApp-based Marketing & Engagement platform helping businesses like Adani, Delhi Transport Corporation, Yakult, Godrej, Aditya Birla Hindalco, Wipro, Asian Paints, India Today Group, Skullcandy, Vivo, PhysicsWallah, and Cosco grow their revenues via WhatsApp.

210,000+ businesses enabled with WhatsApp engagement & marketing
800+ crore WhatsApp messages exchanged annually via AiSensy
Trusted by leading brands including DTC, Vivo, and PhysicsWallah
Businesses generate 25–80% of their revenue via WhatsApp automation
Backed by Marsshot.vc, Bluelotus.vc, and 50+ angel investors

Our mission is to build the most powerful WhatsApp-first customer engagement platform for businesses.

At AiSensy, the Platform Engineering team builds and maintains the foundational systems that power large-scale messaging, automation workflows, and real-time customer engagement.

As a Platform Engineer, you will design and build highly scalable backend infrastructure, developer platforms, and distributed systems that enable product teams to ship reliable features faster. This role is ideal for engineers with strong backend development experience who enjoy working on system architecture, infrastructure tooling, and performance optimization.

You will work closely with backend engineers, DevOps, and product teams to build resilient systems capable of processing millions of WhatsApp interactions daily.

This is a high-impact role shaping the core infrastructure of one of India’s fastest-growing SaaS platforms.

Key Responsibilities

Design and build internal platforms and infrastructure systems that support high-scale messaging and automation services.
Develop tools, frameworks, and services that improve developer productivity, system reliability, and operational efficiency.

Distributed Systems & Scalability

Architect and implement distributed backend systems capable of handling millions of WhatsApp messages per day.
Design systems for high availability, fault tolerance, and horizontal scalability.
Build scalable backend services using Node.js, Express.js, and event-driven architectures.
Develop and maintain high-performance APIs and internal service frameworks.

Data Systems & Performance

Design efficient MongoDB schemas, indexing strategies, and query optimizations for high-volume workloads.
Identify and resolve performance bottlenecks, latency issues, and memory inefficiencies.

Platform Reliability & Observability

Implement logging, monitoring, alerting, and debugging frameworks for platform services.
Improve system reliability, incident response, and operational visibility.

DevOps & Cloud Collaboration

Work closely with DevOps to manage CI/CD pipelines, containerized deployments, and cloud infrastructure (AWS, Docker).
Contribute to infrastructure automation and deployment tooling.
Research and evaluate new technologies, distributed system patterns, and infrastructure tools to improve platform capabilities.
Prototype and implement scalable architectural solutions for evolving product needs.
Write clean, modular, and well-documented code.
Participate in design discussions, architecture reviews, and code reviews to maintain high engineering standards.

Qualifications

Must-Haves

5+ years of software development experience, with strong backend engineering exposure.
Hands‑on experience with Node.js, Express.js, and MongoDB.
Solid understanding of distributed systems, asynchronous programming, and event‑driven architectures.
Experience designing and building high‑scale backend systems or infrastructure components.
Familiarity with Docker, Git, and cloud environments such as AWS.
Strong knowledge of data modeling, indexing, and database performance optimization.
Experience working with production systems handling large‑scale traffic.
Strong problem‑solving skills and system design abilities.

Nice-to-Haves

Experience with Redis, message brokers (RabbitMQ, Kafka), or pub/sub systems.
Familiarity with real‑time systems (WebSockets, streaming pipelines).
Experience with Kubernetes or container orchestration platforms.
Exposure to GraphQL, serverless architectures, or event‑driven microservices.
Experience building internal developer platforms or infrastructure tooling.
Background working in fast‑paced SaaS or product engineering teams.