Backend Engineer - (NestJS, Node.js, TypeScript, Prisma ORM, PostgreSQL, Redis, Azure, Docker)
Dentsu Aegis Network · Posted Oct 27
Global media, digital marketing, and creative communications services
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About the role
The role sits within Merkle, Dentsu's data and technology arm, in the DGS India Bengaluru office. The team builds scalable, secure, and high-performance backend systems and REST APIs on a stack of NestJS, Node.js, TypeScript, Prisma ORM, PostgreSQL, Redis, Microsoft Azure, and Docker. This engineer will design modular backend architectures, optimize databases and caching, implement authentication and observability, and integrate third-party services in production.
What you will do
- Design, develop, and maintain scalable backend services and REST APIs using NestJS, Node.js, and TypeScript.
- Build modular backend architectures using NestJS modules, controllers, services, dependency injection, guards, interceptors, and middleware.
- Design and optimize database schemas, queries, relationships, indexes, and transactions using PostgreSQL and Prisma ORM.
- Implement request validation, centralized error handling, consistent API responses, and API documentation using Swagger/OpenAPI.
- Develop secure authentication and authorization mechanisms, including JWT, RBAC, and permission-based access control.
- Implement caching strategies using Redis and asynchronous processing using messaging queues and background jobs.
- Integrate third-party APIs and external systems, handling authentication, rate limits, retries, timeouts, and failures.
- Optimize API performance, database access, resource utilization, and application scalability.
- Containerize applications using Docker and deploy backend services using Microsoft Azure.
- Implement structured logging, monitoring, distributed tracing, health checks, and other observability practices.
- Write automated tests, participate in code reviews, troubleshoot production issues, and maintain technical documentation.
- Collaborate with frontend engineers and other stakeholders to define API contracts and deliver end-to-end features.
Skills used in this role
What the employer is looking for
- Strong proficiency in Node.js, TypeScript, and modern JavaScript.
- Hands-on experience with NestJS is mandatory, including modules, dependency injection, guards, interceptors, pipes, and exception filters.
- Strong understanding of REST API design, asynchronous programming, modular architecture, SOLID principles, and clean code practices.
- Hands-on experience with PostgreSQL, Prisma ORM, schema design, migrations, transactions, indexing, and query optimization.
- Experience with Redis for caching, TTL management, cache invalidation, and performance optimization.
- Understanding of database consistency, connection pooling, and efficient data-access patterns.
- Experience implementing DTOs, request validation, centralized error handling, and consistent API contracts.
- Familiarity with class-validator, class-transformer, and Swagger/OpenAPI.
- Understanding of authentication, authorization, JWT, OAuth 2.0, RBAC, API security, rate limiting, and secure secrets management.
- Experience handling pagination, filtering, API versioning, retries, and backward compatibility.
- Experience with Microsoft Azure or equivalent cloud platforms, with the ability to work with Azure services in production.
- Familiarity with Azure App Service, Azure Container Apps, Azure Database for PostgreSQL, Azure Service Bus, Azure Key Vault, and Azure Cache for Redis.
- Understanding of messaging queues, background jobs, event-driven architecture, retries, and failure recovery.
- Experience integrating third-party APIs and handling asynchronous workflows.
- Understanding of Node.js performance, concurrency, caching, database optimization, and scalability.
- Familiarity with structured logging, metrics, distributed tracing, health checks, and monitoring tools such as Application Insights or OpenTelemetry.
- Hands-on experience with Docker, Git, CI/CD, and automated testing using Jest or equivalent tools.
- Experience writing unit and integration tests and debugging application issues across development and production environments.
- Strong problem-solving, analytical, and debugging skills.
- Writes clean, modular, secure, maintainable, and strongly typed code.
- Understands the reasoning behind architectural, database, and performance decisions.
- Takes ownership of features from design and development through testing and deployment.
- Communicates effectively and collaborates with frontend engineers, architects, and cross-functional teams.
Preferred qualifications
- Experience with microservices, event-driven architecture, domain-driven design, and clean architecture.
- Familiarity with advanced messaging patterns, idempotency, dead-letter queues, and distributed system reliability.
- Experience with GraphQL, webhooks, WebSockets, API gateways, or enterprise system integrations.
- Familiarity with Kubernetes, infrastructure as code, and Azure Functions.
- Experience building enterprise applications, SaaS platforms, multi-tenant systems, and role-based access control.
- Experience with AI-assisted development tools such as Claude Code for implementation, debugging, refactoring, and testing, with the ability to review and validate generated code.
- Familiarity with monorepos, shared libraries, and CI/CD workflows.
Benefits and support
- Compensation and benefits are detailed in the job posting
About Dentsu Aegis Network
Dentsu Aegis Network was a multinational media and digital marketing communications company that provided brand, media, and digital services through network brands such as Carat, iProspect, and Merkle. It operated as the international business headquarters of Dentsu Group outside of Japan before fully transitioning its operations under the unified 'dentsu' brand. The company specialized in integrated communications, experience transformation, and data-driven marketing solutions.
- Industry
- Marketing
- Company size
- 10001+ employees
- Founded
- 2013
- Location
- London, United Kingdom
- Funding stage
- Public Company
Funding
Public Company
Leadership
Takeshi Sano
Representative Executive Officer, President & Global CEO
Shigeki Endo
Executive Officer, Global CFO
Beth Ann Kaminkow
CEO, dentsu Americas & Chief Global Client Officer