Senior Backend Engineer – Node.js & AWS

Toronto

6–8 years of professional software development experience

• Design and implement event-driven and microservices architectures on AWS
  

• Lead end-to-end development of cloud-native Node.js backend services and APIs
  

• Define API contracts, service boundaries, and integration standards
  

• Ensure high levels of scalability, performance, resiliency, and observability
  

• Apply distributed systems patterns such as idempotency, retries/backoff, sagas, and outbox
  

  
  

• Implement Infrastructure as Code (IaC) using Terraform, CloudFormation, or AWS CDK
  

• Own and maintain CI/CD pipelines (GitHub Actions, AWS CodeBuild, CodePipeline)
  

• Implement deployment strategies such as blue/green and canary releases
  

• Build and maintain monitoring, logging, and alerting using CloudWatch, Prometheus, Grafana, and OpenTelemetry
  

• Lead incident response and root-cause analysis to improve system reliability
  

  
  

• Enforce IAM least-privilege access, secrets management, and secure VPC networking
  

• Apply secure coding practices and threat modeling aligned with OWASP standards
  

• Ensure data protection and encryption at rest and in transit
  

• Support compliance requirements such as SOC 2, ISO, and PCI where applicable
  

  
  

• Establish coding standards, code reviews, and test strategies (unit, integration, E2E)
  

• Define and monitor performance baselines and SLAs
  

• Mentor junior engineers and guide design and architecture discussions
  

• Contribute to technical roadmaps and engineering best practices
  

• Collaborate cross-functionally with Product, QA, SRE, and Data teams
  

• 6–10 years of professional software development experience
  

• 4+ years of production Node.js backend development
  

• Strong expertise in AWS services including Lambda, ECS/EKS, API Gateway, ALB, SQS/SNS, DynamoDB, RDS, S3, CloudFront, Route 53, IAM, and VPC
  

• Deep knowledge of JavaScript/TypeScript and frameworks such as Express, Fastify, or NestJS
  

• Strong understanding of REST and GraphQL API design
  

• Proficiency with CI/CD pipelines and Infrastructure as Code
  

• Solid testing experience using Jest, Mocha, or Tap
  

• Experience with performance tuning, profiling, and observability
  

• Strong grasp of security fundamentals, encryption, and secrets management
  

• Excellent communication, documentation, and collaboration skills
  

• Containerization and orchestration with Docker and Kubernetes (EKS)
  

• Service mesh experience (Istio, AWS App Mesh)
  

• Event streaming and messaging (Kafka, Kinesis, SNS/SQS)
  

• Serverless orchestration with AWS Step Functions
  

• Caching and search technologies (Redis, ElastiCache, OpenSearch/Elasticsearch)
  

• Database modeling and performance tuning (NoSQL and relational)
  

• FinOps, cost optimization, and AWS Well-Architected Reviews
  

• Experience with Python, Go, or Java
  

• Domain experience in fintech, payments, or regulated environments