Principal Engineer – Node.js / TypeScript / AWS
Applicantz
Bengaluru, Karnataka, India
Position Overview
We are looking for a Senior Backend Engineer with strong hands-on expertise in Node.js, TypeScript, distributed systems, microservices, and AWS cloud technologies.
The role will focus on designing, developing, scaling, and supporting highly available backend services and APIs for customer-facing applications. The ideal candidate will have strong ownership of backend architecture, application performance, production reliability, security, observability, and cloud-native engineering practices.
Experience with React and/or Java/Spring Boot is a plus but not mandatory.
Minimum Qualifications
- 7–9 years of overall software engineering experience, including at least 5 years of strong backend development experience.
- Strong hands-on programming experience with Node.js, TypeScript, and JavaScript.
- Strong experience developing RESTful APIs, backend services, and microservice-based applications.
- Solid understanding of data structures, algorithms, object-oriented programming, design patterns, and software architecture.
- Experience designing and developing scalable and maintainable distributed systems.
- Strong hands-on experience with Amazon DynamoDB, including:
- Partition key and sort key design
- Global and local secondary indexes
- Query and access-pattern-based data modeling
- Performance and scalability considerations
- Strong experience with AWS services including ECS, Lambda, S3, SQS, API Gateway, and CloudWatch.
- Experience developing asynchronous, queue-based, and event-driven workflows.
- Experience building secure, resilient, scalable, and highly available applications.
- Experience with automated testing frameworks such as Jest, Mocha, or equivalent.
- Experience with Docker and CI/CD pipelines, including Jenkins or equivalent platforms.
- Strong experience with Git-based source control and development workflows.
- Strong understanding of application monitoring, debugging, observability, incident management, and production support.
- Good understanding of API security, authentication/authorization, error handling, resiliency, and performance optimization.
- Strong analytical, problem-solving, communication, and collaboration skills.
Primary Skills – Must Have
- Node.js
- TypeScript / JavaScript
- Backend Development
- RESTful APIs
- Microservices
- Distributed Systems
- Amazon DynamoDB
- AWS: ECS, Lambda, S3, SQS, API Gateway, CloudWatch
- Event-driven / asynchronous architecture
- Docker
- CI/CD
- Unit & Integration Testing
- Production Troubleshooting & Observability
- Performance, Scalability, Security & Reliability
Secondary Skills – Good to Have
- Java / Spring Boot
- React
- MySQL / PostgreSQL
- Redis / Amazon ElastiCache
- AWS Step Functions, SNS, EventBridge, IAM, EC2
- Terraform, AWS CDK, or CloudFormation
- Kubernetes
- NestJS / Express.js
- OpenTelemetry, Dynatrace, Datadog, or similar tools
- Messaging, event streaming, or distributed workflow platforms
Key Responsibilities
- Design, develop, and maintain scalable backend services and RESTful APIs using Node.js and TypeScript.
- Build reliable, secure, and highly available microservice-based and distributed applications.
- Design efficient data models and access patterns using Amazon DynamoDB.
- Build cloud-native and event-driven solutions using AWS services such as ECS, Lambda, S3, SQS, API Gateway, and CloudWatch.
- Develop asynchronous processing workflows, background jobs, integrations, and messaging-based architectures.
- Define service boundaries, API contracts, data flows, and backend architecture.
- Troubleshoot and resolve complex production and customer-facing issues.
- Identify and address performance, scalability, stability, security, availability, and extensibility challenges.
- Participate in architecture discussions, technical design reviews, and code reviews.
- Develop automated unit, integration, API, and service-level tests.
- Monitor production applications using logs, metrics, traces, dashboards, and alerts.
- Support and improve CI/CD pipelines, automated testing, containerization, and deployment processes.
- Collaborate with Product Managers, QA Engineers, Architects, and globally distributed engineering teams.
- Work in an Agile/Scrum environment.
- Take end-to-end ownership of backend features from design and implementation through deployment and production support.
- Mentor engineers and contribute to backend engineering standards and architectural best practices.