Lead Full-Stack Engineer (Cloud & Infrastructure Heavy – AWS)

Role Overview

We are seeking a highly experienced, hands-on Lead Engineer – AWS Infrastructure to design, scale, and operate production-grade systems on AWS.

This is an infrastructure-heavy leadership role:

• 75% AWS Infrastructure / DevOps / Distributed Systems
• 25% Backend Engineering / Full-Stack Development (Node.js, TypeScript, React, Next.js, NestJS)

For candidates with 10 years of total experience, at least the last 3-4 years must have heavily involved owning and operating production-scale cloud infrastructure on AWS, along with building and maintaining scalable backend services/APIs using Node.js, TypeScript, and NestJS, with the ability to contribute to frontend applications (React / Next.js) when required.

This role requires strong system design capabilities and proven experience handling high-traffic, complex applications at scale - across both infrastructure and application layers.

Key Responsibilities

• Architect and scale cloud-native systems on AWS
• Design highly available, fault-tolerant infrastructure
• Handle traffic spikes, performance bottlenecks, and infrastructure failures
• Own CI/CD pipelines and deployment processes
• Design scalable backend services using Node.js and TypeScript
• Contribute to frontend development when required (React/Next.js)
• Debug production incidents across infrastructure, networking, and database layers
• Lead infrastructure decisions aligned with scalability, security, and performance best practices

Mandatory AWS Infrastructure Expertise

Candidates must have strong, recent hands-on production experience with:

• Amazon EKS (Kubernetes in production environments)
• Docker (containerization, image optimization, orchestration)
• Amazon API Gateway
• Elastic Load Balancing (ALB/NLB)
• Amazon VPC (subnets, route tables, NAT, security groups)
• Amazon RDS (Multi-AZ, read replicas, performance tuning)
• Kubernetes networking, ingress controllers, and traffic routing
• Horizontal Pod Autoscaler (HPA)
• CI/CD pipelines (GitHub Actions or equivalent)
• Infrastructure as Code using AWS CDK (preferred), CloudFormation, or Terraform

Scalability & High-Performance Requirements

Candidates must have demonstrated experience in:

• Scaling backend applications from thousands to millions of users
• Designing systems for high RPS workloads across application and infrastructure layers
• Handling database connection exhaustion, query optimization, and performance bottlenecks
• Implementing horizontal and vertical scaling strategies at both service and infrastructure levels
• Designing stateless, production-grade microservices
• Implementing caching strategies (Redis or equivalent) within backend services
• Designing event-driven architectures using queues or streaming services
• Building resilient distributed systems that remain stable under real production load

System Design & Distributed Systems Knowledge (Preferred)

Candidates with a good understanding of or practical exposure on the below concepts will be prioritized:

• CAP theorem and consistency trade-offs
• Eventual vs strong consistency
• Idempotency in transaction systems
• Saga pattern and distributed transactions
• Retry mechanisms with exponential backoff
• High-availability architecture (Multi-AZ, failover strategies)
• Eliminating single points of failure

Database & Data Architecture

• Managing large datasets (tens of millions of records)
• Index optimization and write performance trade-offs
• Read replica strategies
• Sharding and partitioning approaches
• Designing scalable transaction storage systems

Monitoring & Observability

Experience with:

• Logging and alerting systems
• Distributed tracing across microservices
• Correlation IDs
• Root cause analysis for production incidents
• Infrastructure health monitoring

Full-Stack Technical Expectations (Mandatory but Secondary to Infrastructure)

Candidates must be comfortable contributing to application development:

• Strong TypeScript proficiency
• Node.js backend development
• React.js
• Next.js
• NestJS
• REST API design and authentication mechanisms

While frontend is not the primary focus, the candidate must be capable of shipping features end-to-end when required.

Preferred Qualifications

• AWS Certified Solutions Architect (Associate or Professional)
• AWS Certified DevOps Engineer
• Kubernetes certification
• Experience in fintech, payments, or high-transaction systems
• Experience working in startup or high-growth environments