About 30 Sundays

30 Sundays is a modern holiday company helping Indians plan and book international trips with high-quality itineraries, great stays, and seamless on-trip support. Founded by IIT–IIM and ex-Apple leaders, with a core team from Flipkart, Spinny, and OYO, and backed by leading investors including Info Edge and Eximius.

We are building a consumer-first travel platform that transforms how people discover, plan, and book holidays — and we're growing fast.

Role Summary

We are looking for a Software Development Engineer to join our core engineering team. You will be an individual contributor owning critical systems and features end-to-end — writing production-grade code, driving technical design, and raising the engineering bar across the team.

This role is ideal for someone who is deeply hands-on, thrives on hard technical problems, and wants to build consumer internet products at scale from the ground up.

What You'll Build

Consumer Travel App Build and scale a best-in-class travel discovery and booking experience for Indian travellers, focusing on speed, usability, and personalization. Design and implement features that move beyond traditional booking interfaces and deliver a modern, intuitive holiday-planning experience.

Key Technical Areas

- Travel Discovery: Design and build engaging discovery surfaces — destination feeds, curated collections, search, and filtering.
- AI & Personalization: Implement recommendation engines and ranking systems that adapt to user preferences and browsing behaviour.
- High-Performance Platform: Architect and maintain a fast, reliable, mobile-first backend capable of supporting 20Mn+ DAUs.
- Data-Driven Product: Instrument features with analytics, run experiments (A/B tests), and iterate rapidly based on user insights.
- Internal Tooling: Build internal platforms and ops tooling that help the business operate efficiently at scale.

Key Responsibilities

- Build, maintain,



and scale backend services and REST APIs for the consumer app and internal platforms.
- Design secure, high-performance server-side logic using Node.js as the primary stack.
- Own data modelling, schema migrations, and query optimization across SQL and NoSQL databases.
- Write clean, modular, well-tested backend code and maintain high standards through code reviews.
- Debug production issues, resolve performance bottlenecks, and ensure smooth deployments.
- Integrate third-party APIs, data pipelines, and background processes to support both product and internal operations.
- Collaborate with product, frontend, and internal teams to translate business requirements into robust backend solutions.
- Define backend architecture patterns and best practices that scale across the engineering team.

Technology Stack

Core Backend

- Runtime & Language: Node.js (primary), Python (secondary)
- API Layer: REST APIs, Express.js / Fastify
- Authentication: JWT, OAuth 2.0, session management

Databases

- Relational: PostgreSQL / MySQL — schema design, indexing, migrations
- NoSQL: MongoDB / Redis — caching, session storage, real-time data
- Search: Elasticsearch — for destination and itinerary discovery

Infrastructure & DevOps

- Cloud: AWS (EC2, S3, RDS, Lambda) / GCP
- Containers: Docker, Kubernetes
- CI/CD: GitHub Actions / CircleCI
- Monitoring & Observability: Datadog, Sentry, CloudWatch

Async & Integrations

- Message Queues: SQS, Bull / BullMQ
- Background Jobs: Cron-based workers, event-driven pipelines
- Third-party Integrations: Payment gateways, travel APIs, CRM and ops tools





Developer Tooling

- Version Control: Git, GitHub
- Code Quality: ESLint, Prettier, unit and integration testing (Jest / Mocha)
- CLI & Scripting: Bash, Python scripts for automation

What We're Looking For

Must Have

- 3-6 years of backend development experience (excluding internships), with a strong track record of shipping production systems.
- Deep expertise in Node.js — you've used it to build and scale real, high-traffic services.
- Strong experience designing and building REST APIs, authentication systems, and server-side architecture.
- Proficiency in both SQL and NoSQL databases — data modelling, indexing, migrations, and query optimization.
- Experience owning production systems end-to-end, including monitoring, debugging, and incident response.
- Familiarity with Git, CLI tooling, and rigorous code review practices.
- Prior experience at a consumer internet startup is strongly preferred.

Good to Have

- Working knowledge of Python for scripting, automation, or data pipelines.
- Experience with cloud platforms — AWS, GCP, or Azure.
- Exposure to background job systems, event-driven architectures, or message queues (e.g. SQS, Kafka, Bull).
- Experience building internal tooling or admin systems in addition to consumer-facing products.

Preferred Education B.Tech / B.E. from IITs, top NITs, BITS Pilani, or equivalent robust engineering institutions. We value demonstrated ability and impact over pedigree.

Why Join 30 Sundays

- Greenfield problem space — build systems from scratch; your architecture decisions will shape millions of trips.
- Technical depth + product impact — write code that directly moves key product metrics with no layers between you and the outcome.
- Backed by top investors — Info Edge and Eximius backing with a clear path to scale.
- Travel as a perk — experience the product you build; annual travel credits included.

📌 Software Engineer (Gurugram)
🏢 30 Sundays
📍 Gurugram