Ctruh is looking for a deeply technical, hands-on Senior Backend Engineer someone who can architect systems in the morning, write production-grade code in the afternoon, and scale infrastructure to power millions of 3D and XR experiences.

You will own the entire backend ecosystem: architecture, APIs, databases, infrastructure, performance, and reliability.

This is not an oversight or management-only position it is a builders role where you design, code, deploy, and optimize mission-critical systems.

You will make foundational decisions, build distributed systems that handle massive 3D processing workloads, and lead our backend engineering direction as we scale globally.

What Youll Build :

System Architecture & Design :

- Architect highly scalable backend systems from the ground up.

- Define technology choices : frameworks, databases, queues, caching layers.

- Evaluate microservices vs monoliths based on product stage.

- Design REST, GraphQL, and real-time WebSocket APIs.

- Build event-driven systems for asynchronous processing.

- Architect multi-tenant systems with strict data isolation.

- Maintain architectural documentation and technical specs.

Core Backend Services :

- Build high-performance APIs for 3D content, XR experiences, analytics, and user interactions.

- Create 3D asset processing pipelines for uploads, conversions, and optimization.

- Develop distributed job workers for CPU/GPU-intensive tasks.

- Build authentication/authorization systems (RBAC).

- Implement billing, subscription, and usage metering.

- Build secure webhook systems and third-party integration APIs.

- Create real-time collaboration features via WebSockets/SSE.

Data Architecture & Databases :

- Design scalable schemas for 3D metadata, XR sessions, and analytics.

- Model complex product catalogs with variants and hierarchies.

- Implement Redis-based caching strategies.

- Build search and indexing systems (Elasticsearch/Algolia).

- Architect ETL pipelines and data warehouses.

- Implement sharding, partitioning, and replication strategies.

- Design backup, restore, and disaster recovery workflows.

Scalability & Performance :

- Build systems designed for 10x100x traffic growth.

- Implement load balancing, autoscaling, and distributed processing.

- Optimize API response times and database performance.

- Implement global CDN delivery for heavy 3D assets.

- Build rate limiting, throttling, and backpressure mechanisms.

- Optimize storage and retrieval of large 3D files.

- Profile and improve CPU, memory, and network performance.

Infrastructure & DevOps :

- Architect AWS infrastructure (EC2, S3, Lambda, RDS, ElastiCache).

- Build CI/CD pipelines for automated deployments and rollbacks.

- Use IaC tools (Terraform/CloudFormation) for infra provisioning.

- Set up monitoring, logging, and alerting systems.

- Use Docker + Kubernetes for container orchestration.

- Implement security best practices for data, networks, and secrets.

- Define disaster recovery and business continuity plans.

Integration & APIs :

- Build integrations with Shopify, WooCommerce, Magento.

- Design webhook systems for real-time events.

- Build SDKs, client libraries, and developer tools.

- Integrate payment gateways (Stripe, Razorpay).

- Implement SSO and OAuth for enterprise customers.

- Define API versioning and lifecycle/deprecation strategies.

Data Processing & Analytics :

- Build analytics pipelines for engagement, conversions, and XR performance.

- Process high-volume event streams at scale.

- Build data warehouses for BI and reporting.

- Develop real-time dashboards and insights systems.

- Implement analytics export pipelines and platform integrations.

- Enable A/B testing and experimentation frameworks.

- Build personalization and recommendation systems.

Technical Stack :

Backend Languages & Frameworks :

- Primary : Node.js (Express, NestJS), Python (FastAPI, Django).

- Secondary : Go, Java/Kotlin (Spring).

- APIs : REST, GraphQL, gRPC.

Databases & Storage :

- SQL : PostgreSQL, MySQL.

- NoSQL : MongoDB, DynamoDB.

- Caching : Redis, Memcached.

- Search : Elasticsearch, Algolia.

- Storage/CDN : AWS S3, CloudFront.

- Queues : Kafka, RabbitMQ, AWS SQS.

Cloud & Infrastructure :

- Cloud : AWS (primary), GCP/Azure (nice to have).

- Compute : EC2, Lambda, ECS, EKS.

- Infrastructure : Terraform, CloudFormation.

- CI/CD : GitHub Actions, Jenkins, CircleCI.

- Containers : Docker, Kubernetes.

Monitoring & Operations :

- Monitoring : Datadog, New Relic, CloudWatch.

- Logging : ELK Stack, CloudWatch Logs.

- Error Tracking : Sentry, Rollbar.

- APM tools.

Security & Auth :

- Auth : JWT, OAuth 2.0, SAML.

- Secrets : AWS Secrets Manager, Vault.

- Security : Encryption (at rest/in transit), TLS/SSL, IAM.

What Were Looking For :

- 5+ years in backend engineering with strong system design expertise.

- Experience building scalable systems from scratch.

- Expert-level proficiency in at least one backend stack (Node, Python, Go, Java).

- Deep understanding of distributed systems and microservices.

- Strong SQL/NoSQL design skills with performance optimization.

- Hands-on AWS cloud experience.

- Ability to write high-quality production code daily.

- Experience building and scaling RESTful APIs.

- Strong understanding of caching, sharding, horizontal scaling.

- Solid security and best-practice implementation experience.

- Proven leadership and mentoring capability.

Highly Desirable :

- Experience with large file processing (3D, video, images).

- Background in SaaS, multi-tenancy, or e-commerce.

- Experience with real-time systems (WebSockets, streams).

- Knowledge of ML/AI infrastructure.

- Experience with HA systems, DR planning.

- Familiarity with GraphQL, gRPC, event-driven systems.

- DevOps/infrastructure engineering background.

- Experience with XR/AR/VR backend systems.

- Open-source contributions or technical writing.

- Prior senior technical leadership experience.

Technical Challenges Youll Solve :

- Designing large-scale 3D asset processing pipelines.

- Serving XR content globally with ultra-low latency.

- Scaling from thousands to millions of daily requests.

- Efficiently handling CPU/GPU-heavy workloads.

- Architecting multi-tenancy with complete data isolation.

- Managing billions of analytics events at scale.

- Building future-proof APIs with backward compatibility.

Location & Work Culture :

- Location : Bengaluru.

- Schedule : 6 days a week, (5 days-in-office, Saturdays WFH).

- Culture : Builder mindset, strong ownership, technical excellence.

Compensation :

- Competitive salary based on experience.

- Significant stock options (4-year vesting).

- Performance-based bonuses tied to system reliability and delivery.

The Ideal Candidate :

- You are a backend engineer first, architect second someone who still loves writing code, debugging complex issues, and solving scaling problems hands-on.

- Youve built systems from the ground up and lived through the growing pains of scaling.

- You think in systems, evaluate trade-offs clearly, and design architectures that are practical, resilient, and future-proof.

- Youre highly comfortable discussing microservices vs monoliths, choosing the right database for a use case, designing APIs, and introducing caching or queues when appropriate.

- Youve made decisions that you later optimized or re-architected and learned from both.

- You stay close to the code.

- You pair-program, review PRs, jump into production incidents, and ship features alongside your team.

- You enjoy designing a high-level architecture and then implementing the most critical parts yourself.

- You balance ambition with pragmatism.

- You know when to use managed services, when to build custom solutions, and how to ship iteratively while

maintaining system stability.

- Most importantly, youre a builder someone excited to architect the backend foundations of a fast-growing XR platform, optimize performance for massive 3D workloads, and define infrastructure that supports global, real-time immersive experiences.