Cloud Backend Engineer: Scalable Go/TypeScript Backends

Kastech Canada; Brea (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

Kastech Canada is seeking a Cloud Backend Engineer to design, build, and operate backend services behind a scalable, multi-tenant cloud platform. You will own architecture, infrastructure-as-code, and production operations, writing Go services and defining AWS infrastructure with CDK.

You will work across edge and cloud, enforce strong security and isolation, and help scale event-driven pipelines. This is a high-ownership role on a senior team with opportunity to drive reliability and

Qualifications

• Go and Node/TypeScript backend experience.
• Hands-on AWS experience with Lambda, API Gateway, SQS, DynamoDB, S3, RDS/Aurora, Cognito, CloudWatch.
• Infrastructure as code with CDK (TypeScript) or Terraform/CloudFormation knowledge.
• Distributed systems expertise: event-driven architecture, queues, retries, idempotency.
• Experience designing multi-tenant SaaS backends with proper authn/authz and API gateway patterns.
• PostgreSQL familiarity including Row-Level Security would be a strong plus.
• CI/CD and containerization with Jenkins and Docker.
• Strong debugging, observability, and clear technical communication.

Responsibilities

• Design, build, and maintain backend services and APIs in Go, with supporting code and infrastructure in TypeScript.
• Define and operate cloud infrastructure on AWS using CDK — API Gateway, Lambda, SQS, DynamoDB, S3, RDS/Aurora PostgreSQL, Cognito, CloudFront, and WAF.
• Build and scale event-driven and device-to-cloud pipelines — telemetry and data ingestion, content/command delivery, retries, and offload/consolidation processing.
• Work across the cloud/edge boundary — services and agents running on edge/embedded Linux, using AWS IoT Greengrass and MQTT messaging.
• Strengthen multi-tenant isolation, identity, and security — PostgreSQL Row-Level Security, OAuth2/JWT, API gateway authorizers and middleware, edge protection, and encryption in transit and at rest.
• Own reliability and observability — structured logging, retry/back-off, latency tracing, and diagnosing concurrency and load problems.
• Write and maintain CI/CD and security scanning — Jenkins pipelines, Docker, remediation of dependency/container findings.
• Collaborate with architecture, firmware/edge, and product teams to define API and data contracts between devices and the cloud.
• Contribute to design reviews, participate in on-call/incident response, and help with release engineering for production systems.
• Nice to Have: IoT/device-to-cloud experience with AWS IoT Greengrass and MQTT.

Skills

Go backend

Node/TypeScript

AWS

CDK

PostgreSQL

CI/CD

Docker

Observability

Security

Edge/IoT

Tools

AWS CDK

Docker

Jenkins

Job description

Kastech Canada is seeking a Cloud Backend Engineer to design, build, and operate backend services behind a scalable, multi-tenant cloud platform. You will own architecture, infrastructure-as-code, and production operations, writing Go services and defining AWS infrastructure with CDK.

You will work across edge and cloud, enforce strong security and isolation, and help scale event-driven pipelines. This is a high-ownership role on a senior team with opportunity to drive reliability and