Senior Backend Engineer — AWS Serverless & React (Hybrid)

Harnham; Phoenix (AZ); Hybrid; USD 120,000 - 145,000; Full time

Job summary

Harnham is seeking a Senior Full Stack Software Engineer with a backend focus to join our Tempe team in a hybrid role. You will design and build serverless backend services in AWS, develop RESTful APIs in Python, and contribute to React front-end work.

The role combines hands-on coding with architectural ownership, collaborating across product, QA, and operations to deliver scalable, cost-efficient cloud solutions at scale in a fast-moving, Agile environment.

Qualifications

• 2–8+ years of software engineering experience.
• Strong hands-on experience with AWS Serverless (Lambda, S3, API Gateway).
• Proficiency in Node.js for backend development.
• Solid understanding of cloud-native architecture and distributed systems.
• Experience working in Agile environments with CI/CD pipelines.
• Experience building modern front-end applications with React/ReactJS (Nice to have).

Responsibilities

• Design and build serverless backend services using AWS Lambda, S3, and related AWS services.
• Develop RESTful APIs and event-driven workflows in Python.
• Build and enhance modern front-end applications using React / ReactJS.
• Architect scalable, secure cloud-native solutions.
• Optimize performance, reliability, and cost efficiency in AWS environments.
• Participate in CI/CD pipelines and automated deployments.
• Collaborate with product, QA, and cross-functional teams to ship high-quality releases.

Skills

AWS Serverless

Node.js

Python

React experience

Tools

AWS Lambda

S3

API Gateway

React/ReactJS

Job description

Harnham is seeking a Senior Full Stack Software Engineer with a backend focus to join our Tempe team in a hybrid role. You will design and build serverless backend services in AWS, develop RESTful APIs in Python, and contribute to React front-end work.

The role combines hands-on coding with architectural ownership, collaborating across product, QA, and operations to deliver scalable, cost-efficient cloud solutions at scale in a fast-moving, Agile environment.