About the Role
We're looking for a Cloud Backend Engineer to design, build, and operate the backend services behind a multi-tenant, event-driven cloud platform. You'll work across cloud services and device/edge connectivity, building reliable, scalable systems and owning them end-to-end — from architecture and infrastructure-as-code through to production operations.
This is a hands-on, high-ownership role on a small, senior team. You'll write Go services, define your own AWS infrastructure in CDK, secure the API edge, and reason about the boundary between the device edge and the cloud.
What You'll Do
● 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 (including dead-letter/redrive queues), 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 (CloudFront/WAF/Lambda@Edge), and encryption in transit and at rest (KMS/Secrets Manager).
● Own reliability and observability — structured logging with secret redaction, retry/back-off and idempotency, latency tracing, and diagnosing concurrency and load problems in ingestion and delivery paths.
● Write and maintain CI/CD and security scanning — Jenkins pipelines, Docker, and remediation of dependency/container findings (e.g., BlackDuck, Sysdig) across multiple environments.
● Collaborate with architecture, firmware/edge, and product teams to define the 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.
What We're Looking For
Required:
● Strong professional experience building backend services in Go and Node/Typescript (services, middleware, concurrency, testing).
● Hands-on experience with AWS — Lambda, API Gateway, SQS, DynamoDB, S3, IAM, Cognito, RDS/Aurora, CloudWatch — and comfort operating what you build.
● Experience writing infrastructure as code, ideally AWS CDK (TypeScript) (Terraform/CloudFormation experience translates).
● Solid understanding of distributed systems — event-driven architecture, message queues, retries/idempotency, dead-letter handling, eventual consistency, and fault tolerance.
● Experience designing and securing multi-tenant SaaS backends — tenant isolation, authn/authz (OAuth2, JWT), and API gateway patterns.
● Working knowledge of PostgreSQL — schema design, migrations, and query performance (Row-Level Security a strong plus).
● Comfort with CI/CD and containerization — Jenkins (or similar), Docker, and multi-environment promotion.
● Strong debugging and observability instincts, and clear technical communication.
●
Nice to Have:
● Experience with IoT / device-to-cloud systems — AWS IoT Greengrass, MQTT, device provisioning, fleet management, and telemetry pipelines.
Skills Required
- Strong professional experience building backend services in Go and Node.js/TypeScript, including middleware, concurrency, and testing
- Hands-on experience with AWS Lambda, API Gateway, SQS, DynamoDB, S3, IAM, Cognito, RDS/Aurora, and CloudWatch
- Experience writing infrastructure as code; AWS CDK preferred, with Terraform or CloudFormation accepted as transferable experience
- Understanding of distributed systems, event-driven architecture, message queues, retries, idempotency, dead-letter handling, eventual consistency, and fault tolerance
- Experience designing and securing multi-tenant SaaS backends, including tenant isolation, OAuth2, JWT, authentication, authorization, and API gateway patterns
- Working knowledge of PostgreSQL, including schema design, migrations, and query performance
- CI/CD and containerization experience with Jenkins or similar tools, Docker, and multi-environment promotion
- Strong debugging, observability, and technical communication skills
- Experience with IoT or device-to-cloud systems, AWS IoT Greengrass, MQTT, device provisioning, fleet management, and telemetry pipelines
- Experience with PostgreSQL Row-Level Security
What We Do
Kastech Canada offers significant agile products and services at favorable costs to nearshore and offshore clients. Furthermore, our delivery approach is vital in meeting customer objectives quickly and easily and collaborating with internal teams to avoid missing any milestones. Is your company looking to scale up with the best talent in the world? We have access to elite technology professionals including specialized talent in artificial intelligence, machine learning, data science, data engineering, mobile development, and cloud computing. 𝗔𝗰𝗰𝗲𝘀𝘀 𝗼𝘂𝗿 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝘁𝗮𝗹𝗲𝗻𝘁: * We offer business insights with Nearshore and Offshore capabilities. * Our professionals are available with a minimum turnaround time to meet your requirements. * We ensure to maintain quality first approach. 𝗖𝗼𝗿𝗲 𝗢𝗳𝗳𝗲𝗿𝗶𝗻𝗴𝘀: Leverage the power of our IT outsourcing services, which are customized to your company's needs. We offer services and provide solutions to help your business identify risks and vulnerabilities to improve further or build your organization's competitive business environment. * Empowering our clients to make informed decisions based on actual data and developments. * Assisting in achieving your research goals by offering an array of information. * To ensure that the project continues successfully, we keep in touch with our clients on a regular basis.
