Senior Backend Engineer - Node.js, AWS & APIs

Techstack; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Course reimbursement

English courses

20 days off

7 sick days

Remote work options

Legal support

Job summary

Techstack is seeking a Senior Backend Software Engineer (Node.js) to support a Canadian partner with a large backend ecosystem across legacy and cloud-native services. You will own production stability, investigate complex issues, and gradually modernize systems while collaborating with a small, experienced team and a client-side PM.

You will work with AWS, serverless patterns, Docker, Terraform, and relational databases, while applying AI-assisted tools to coding, debugging and documentation to

Qualifications

• 5+ years of commercial software development experience.
• Experience building and supporting REST APIs and distributed systems.
• Strong SQL skills and experience with relational databases.
• Confident hands-on experience with AWS and cloud infrastructure.
• Ability to work independently on complex systems with limited documentation.
• Hands-on use of AI-assisted development tools in daily work.

Responsibilities

• Support and improve backend services, APIs, admin portals, websites, and automation tools.
• Maintain and modernize existing applications across legacy and modern tech.
• Investigate production issues, troubleshoot, and find root causes.
• Work with AWS services, cloud infrastructure, and deployment pipelines.
• Improve stability, performance, and maintainability of systems.
• Explore unfamiliar codebases, document and onboard new team members.
• Use AI tools for coding, debugging, testing, refactoring, and documentation.
• Review AI-generated code for quality, security, and maintainability.
• Collaborate with client-side stakeholders during onboarding and knowledge transfer.
• Take ownership and reduce technical debt.

Skills

Node.js

TypeScript

REST APIs

Distributed systems

SQL

AWS

Cloud infrastructure

AI-assisted tooling

Ownership

Problem-solving

Tools

MySQL

MongoDB

Amazon Aurora

AWS Lambda

Serverless Framework

API Gateway

AWS SDK

Amazon SQS

Docker

Terraform

AngularJS v1

Job description

Techstack is seeking a Senior Backend Software Engineer (Node.js) to support a Canadian partner with a large backend ecosystem across legacy and cloud-native services. You will own production stability, investigate complex issues, and gradually modernize systems while collaborating with a small, experienced team and a client-side PM.

You will work with AWS, serverless patterns, Docker, Terraform, and relational databases, while applying AI-assisted tools to coding, debugging and documentation to