Senior Node.js / NestJS Developer

Senior Node.js / NestJS Developer

Experience: 5+ Years
Employment Type: Full-Time
Role: Senior Backend Developer
Location: Remote

About the Role

We are looking for an experienced Senior Node.js / NestJS Developer with 5+ years of backend development experience to join our engineering team.

The ideal candidate should have strong expertise in Node.js, NestJS, SQL/NoSQL databases, microservices, asynchronous processing, AWS, system design, and CI/CD. The candidate should be comfortable designing scalable backend systems, optimizing application and database performance, and working closely with frontend and DevOps teams.

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Node.js and NestJS.
• Design and implement RESTful APIs and backend services.
• Build and maintain microservices-based architectures.
• Design database schemas and optimize queries for high-performance applications.
• Work with MySQL/PostgreSQL and MongoDB, including indexing, aggregation, transactions, and query optimization.
• Implement queues, background jobs, scheduled tasks, and asynchronous processing.
• Work with messaging/queue technologies such as Kafka, RabbitMQ, SQS, BullMQ, or equivalent.
• Design reliable and scalable systems considering performance, availability, scalability, and fault tolerance.
• Work with AWS services for application deployment, storage, databases, messaging, monitoring, and infrastructure.
• Develop and maintain CI/CD pipelines for automated testing, building, and deployment.
• Follow Git-based version control practices and collaborate through code reviews and pull requests.
• Troubleshoot production issues, identify root causes, and implement long-term solutions.
• Write clean, maintainable, testable, and well-documented code.
• Participate in system design and technical architecture discussions.
• Mentor junior and mid-level developers and contribute to engineering best practices.
• Collaborate with frontend developers working with React/Angular to design and integrate APIs effectively.

Required Technical Skills

Backend

• Node.js Strong proficiency
• NestJS — Strong proficiency
• TypeScript
• REST APIs
• Authentication & Authorization
• API security and best practices
• Error handling, logging, validation, and monitoring

Databases

Strong experience with both SQL and NoSQL databases:

• MySQL / PostgreSQL

Database schema design

Complex SQL queries

Joins and subqueries

Indexing

Query optimization

Transactions

Normalization/denormalization

Understanding of execution plans

• MongoDB

Schema design

Aggregation pipelines

Indexing

Query optimization

Data modeling

Microservices & Distributed Systems

• Experience designing and developing microservices architectures.
• Understanding of service-to-service communication.
• Experience with synchronous and asynchronous communication.
• Knowledge of:

Message queues

Event-driven architecture

Retry mechanisms

Dead-letter queues

Idempotency

Distributed transactions

Fault tolerance

Circuit breakers

Queues & Background Processing

Experience with one or more:

• Apache Kafka
• RabbitMQ
• AWS SQS/SNS
• BullMQ
• Redis-based queues
• Cron/Scheduled Jobs
• Background workers

AWS

Hands-on experience with AWS services such as:

• EC2
• ECS / Docker
• S3
• RDS
• ElastiCache / Redis
• SQS / SNS
• Lambda
• API Gateway
• CloudWatch
• IAM
• Load Balancer
• Auto Scaling

The candidate should have a good understanding of deploying and operating backend applications on AWS.

Version Control

• Strong knowledge of Git.
• Experience with GitHub/GitLab/Bitbucket.
• Branching strategies.
• Pull requests and code reviews.
• Conflict resolution.

System Design

Strong understanding of Low-Level Design (LLD) and High-Level Design (HLD).

Should be able to design systems considering:

• Scalability
• Availability
• Performance
• Reliability
• Security
• Caching
• Database selection
• Load balancing
• Horizontal/vertical scaling
• Rate limiting
• Queues and asynchronous processing
• API design
• Distributed systems

CI/CD & DevOps

• Experience building or working with CI/CD pipelines.
• GitHub Actions / GitLab CI / Jenkins / AWS CodePipeline or equivalent.
• Automated testing and deployment.
• Docker/containerization.
• Environment management for development, staging, and production.

Frontend Exposure

Frontend expertise is not mandatory, but candidates should have working knowledge of:

• React.js and/or Angular
• JavaScript/TypeScript
• REST API integration
• Authentication flows
• Basic frontend architecture

The candidate should be comfortable collaborating with frontend developers and understanding how backend APIs are consumed by web applications.

Good to Have

• Redis and caching strategies.
• Docker and Kubernetes.
• Apache Kafka.
• GraphQL.
• WebSockets / Server-Sent Events.
• Elasticsearch/OpenSearch.
• Observability and monitoring.
• Unit and integration testing using Jest or similar frameworks.
• Experience with high-traffic or distributed applications.
• Experience working in Agile/Scrum environments.

What We Expect

• Strong problem-solving and debugging skills.
• Ability to independently own backend modules/services.
• Ability to understand business requirements and translate them into technical solutions.
• Strong understanding of software engineering principles and design patterns.
• Ability to review code and provide meaningful technical feedback.
• Good communication and collaboration skills.
• Ability to make architecture and technology decisions with scalability and maintainability in mind.

Experience

5+ years of professional software development experience, with significant hands-on experience in Node.js/NestJS backend development.

Candidates should be able to demonstrate experience building and maintaining production-grade, scalable backend systems.