Senior Backend Developer

7 days ago

Gurgaon, Haryana, India Avidion Softwares Gurugram Full time ₹ 15,00,000 - ₹ 25,00,000 per year

Senior Backend Developer (NestJS/TypeScript)

Location: Sec-42, Gurugram, Haryana (Work from Office)

Type: Full-Time, On-Site

About Us:

We are a premium software development company focused on delivering next-generation SaaS and AI-integrated solutions for global clients. Our team is passionate about building scalable products with modern technology stacks, high performance, and enterprise-grade reliability.

We are looking for a Senior Backend Developer who can take ownership of backend systems, design robust architectures, and lead the development of mission-critical APIs, integrations, and workflows.

Key Responsibilities

  • Architecture & Development

Design, build, and maintain scalable backend services using NestJS (TypeScript).

Implement REST APIs, webhooks, and asynchronous job queues.

Design secure, multi-tenant database schemas in PostgreSQL (with pgvector for embeddings).

  • Integrations & Workflows

Build and maintain integrations with third-party APIs (Google, Microsoft, Zoho, HubSpot, Calendly, Razorpay, Stripe).

Implement robust OAuth 2.0 flows, token refresh, and rate-limit handling.

Orchestrate background jobs with Redis + BullMQ for scheduling, retries, and throttling.

  • AI & Data Handling

Work closely with AI engineers to integrate LLM APIs (OpenAI, Anthropic, etc.) into backend workflows.

Ensure structured input/output validation using JSON schemas or Zod.

Optimize pipelines for cost, latency, and reliability.

  • Security & Compliance

Enforce security best practices (RBAC, data encryption, audit logs).

Implement data privacy features to align with DPDP Act (India), GDPR, and CAN-SPAM basics.

  • DevOps & Observability

Deploy and manage services on AWS/Render/Vercel (or similar).

Set up monitoring, logging, and alerting (Sentry, Open Telemetry, Grafana, or similar).

Ensure high availability, backups, and disaster recovery policies.

  • Collaboration

Work closely with frontend, UI/UX, and AI engineers to deliver end-to-end features.

Participate in code reviews, mentor junior developers, and uphold coding standards.

Contribute to sprint planning, architectural decisions, and technical documentation. Required

Skills & Experience

  • 4+ years of backend development experience (preferably SaaS or enterprise software).
  • Strong expertise in NestJS / (TypeScript) with deep understanding of modular architecture.
  • Proficiency with PostgreSQL (schema design, optimization, migrations).
  • Experience with Redis and job queues (BullMQ or similar).
  • Hands-on experience integrating with OAuth-based APIs (Google/Microsoft/Zoho/HubSpot). Understanding of webhooks, rate limits, retries, and async workflows.
  • Knowledge of security best practices (auth, encryption, audit logging).
  • Familiarity with deploying & scaling apps on AWS, Render, or Railway.
  • Experience with observability tools (Sentry, OpenTelemetry, Datadog, or similar).

Good-to-Have (Bonus Skills)

  • Experience with LLM APIs (OpenAI, Anthropic) and workflow orchestration.
  • Knowledge of LangChainJS or similar libraries for AI integrations.
  • Familiarity with payment gateways (Razorpay, Stripe).
  • Exposure to compliance frameworks (GDPR, DPDP, CAN-SPAM).
  • Contribution to open-source projects or technical blogs.

What We Offer

Opportunity to work on cutting-edge AI + SaaS products from India for global markets.

Fast-paced, collaborative start-up environment with real ownership.

Competitive salary and performance-based incentives.

Continuous learning, mentorship, and growth opportunities.

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