We are looking for a skilled and detail-oriented Backend & API Integration Engineer to connect our internal systems with external platforms, focusing heavily on third-party APIs, real-time webhooks, and cloud backend stability.

While our application development workflows leverage modern AI-assisted engineering tools, this role is critical for orchestrating bulletproof system-to-system connections, managing high-throughput webhook pipelines (Meta/WhatsApp Business API), ensuring data integrity, and maintaining secure cloud deployments.

Key Responsibilities:

- Third-Party API & Webhook Integration: Design, implement, and maintain robust integrations with Meta Graph API, WhatsApp Cloud API, payment gateways, and third-party SaaS services.
- Webhook Reliability Architecture: Build fault-tolerant webhook endpoints capable of handling sudden payload spikes, ensuring immediate acknowledgment (HTTP 200) and preventing delivery timeouts.
- Asynchronous Queue Management: Implement background message processing and retry mechanisms using queues (e.g., Redis, BullMQ, or RabbitMQ) to guarantee zero message loss and handle duplicates (Idempotency).
- Security & Authentication: Secure endpoints using HMAC SHA-256 signature verification, secure token storage, workplace variable hygiene, and proper rate-limiting protocols.
- Cloud & Server Infrastructure: Deploy, monitor, and scale backend services across cloud platforms (AWS, GCP, Render, or Vercel) with reliable uptime.
- Code Review & Production Debugging: Review, test, and debug backend logic and database workflows to ensure production-grade performance.





Required Qualifications & Technical Skills:

- Backend Development: 2+ years of hands-on experience building production backends using Node.js (Express/Fastify) or Python (FastAPI/Django).
- API Expertise: Deep technical understanding of RESTful architecture, HTTP status codes, webhooks, rate limiting, and payload validation.
- Direct Meta/WhatsApp API Experience: Proven track record of configuring and maintaining Meta WhatsApp Business Cloud API / Webhook endpoints.
- Databases: Solid working knowledge of MongoDB or PostgreSQL for schema design, indexing, and query optimization.
- Message Brokers / Queues: Practical experience with Redis or RabbitMQ for handling asynchronous background jobs.
- DevOps Basics: Familiarity with environment configuration, SSL, server logging, and basic CI/CD deployment pipelines.

Preferred Qualifications:

- Experience integrating payment gateways (e.g., Razorpay, Stripe).
- Familiarity with uptime monitoring and error-tracking tools like Sentry, Better Stack, or Datadog.
- Comfort working with AI development tools to accelerate delivery while strictly enforcing code quality and security standards.

Screening Questions (For Indeed Candidates):

- Have you previously integrated Meta WhatsApp Business API or handled real-time webhook events in production?
- Which message broker or queue system (e.g., Redis, RabbitMQ, BullMQ) do you have experience with for processing background tasks?
- How many years of backend development experience do you have with Node.js or Python?

Pay: ₹20,000.00 - ₹30,000.00 per month

Work Location: In person

📌 Backend & API Integration Engineer (Webhooks & Cloud) (Edappally)
🏢 Womyt
📍 Edappally