Senior Full-Stack Engineer (Remote, Long-Term Contract)

NextSource Inc.; United States; Remote; USD 110,000 - 124,000; Full time

Benefits offered by this job

Healthcare Benefits including Medical,

Prescription, Vision & Dental Coverage

401(k) Retirement Planning

Discount Program

Job summary

nextSource is seeking a Senior Full Stack Software Engineer to design, build, and modernize user-facing applications on AWS. You will deliver full-stack features with React and Node in a serverless environment, and drive automation and framework improvements across the team.

The role requires strong JS, Node.js, and React expertise, plus deep AWS serverless knowledge. You will collaborate remotely with cross-team partners and contribute early in projects.

Qualifications

• Minimum 7 years of professional software development experience.
• Strong hands-on JavaScript (ES6).
• Strong hands-on Node.js development, meaning real coding depth rather than package management alone.
• Strong hands-on React.js.
• Deep working knowledge of AWS serverless architecture: Lambda, S3, SNS/SQS, Kinesis, RDS, and DynamoDB.
• Experience with both relational and NoSQL databases.
• Experience designing, building, and monitoring microservices.
• Hands-on CI/CD experience with Jenkins or AWS CodePipeline.
• Strong unit testing discipline plus automated API integration testing.
• Working experience with automated device and browser testing.
• Strong fundamentals in object-oriented design and core computer science principles.
• Knowledge of systems analysis and design (OOAD, UML) and database design.
• Solid grasp of SDLC and modern software engineering practices.
• Ability to code alongside agentic AI tools as part of your normal workflow.

Responsibilities

• Design, develop, and ship full-stack features across React front ends and Node.js services.
• Build serverless solutions on AWS that support data quality, process automation, and data integrity at scale.
• Own complex development work and manage defined sections of ongoing projects against firm deadlines.
• Create design specifications, unit tests, and technical documentation.
• Build and monitor microservices, applying distributed design patterns where they fit.
• Improve automation and testing frameworks alongside feature delivery.
• Work directly with cross-team partners and internal customers, keeping those relationships professional and predictable.

Skills

JavaScript (ES6)

Node.js

React.js

AWS serverless

Relational & NoSQL databases

Microservices design

CI/CD (Jenkins / CodePipeline)

Unit testing & API integration testing

Automated device/browser testing

OO design fundamentals

OOAD/UML & database design

SDLC & modern software practices

Agentic AI tools integration

Tools

AWS

Jenkins

AWS CodePipeline

GitHub CI/CD

Serverless framework

Job description

nextSource is seeking a Senior Full Stack Software Engineer to design, build, and modernize user-facing applications on AWS. You will deliver full-stack features with React and Node in a serverless environment, and drive automation and framework improvements across the team.

The role requires strong JS, Node.js, and React expertise, plus deep AWS serverless knowledge. You will collaborate remotely with cross-team partners and contribute early in projects.