Senior Full-Stack Engineer — React/Node, CI/CD & Impact

RXinsider LTD.; Philadelphia, Northern (Philadelphia County, KY); Hybrid; USD 120,000 - 170,000; Full time

Job summary

RXinsider LTD. is seeking a collaborative Full Stack Developer to join a fast-paced Agile team. You will own features across frontend and backend using React, Node.js, and Express.js, with a focus on code quality, testing, and CI/CD pipelines (Jenkins).

The ideal candidate has strong experience in React, Node.js, Express.js, RESTful APIs, and GitHub workflows, and will contribute in a cross-functional, quality-driven environment. You’ll mentor peers and help shape scalable web applications.

Qualifications

• Professional software development experience in full-stack JavaScript.
• Proficiency with React (hooks, state management, component design) and modern JavaScript/TypeScript.
• Experience with Node.js and Express.js for API development.
• Experience building and consuming RESTful APIs.
• Proficiency with GitHub workflows, pull requests, issue tracking, and collaboration in a distributed or co-located team.
• Experience with linting (ESLint) and automated testing (unit tests; Jest, Mocha, or similar).
• Working knowledge of Agile/Scrum methodologies and collaboration in cross-functional teams.
• Experience with additional front-end tooling and state management libraries (e.g., Redux or modern alternatives).
• Familiarity with other back-end technologies or databases (SQL/NoSQL) and ORM/query builders.

Responsibilities

• Designing, developing, testing, and maintaining scalable web applications using React on the frontend and Node.js/Express.js on the back end.
• Translating product requirements into well-architected, maintainable code and robust APIs.
• Implementing automated tests (unit/integration) and ensure code quality through reviews and best practices.
• Collaborating in an Agile/Scrum environment: participate in standups, sprints planning, backlog grooming, and demos.
• Contributing to CI/CD pipelines and release processes; work with Jenkins to build, test, and deploy features.
• Writing and maintaining comprehensive documentation, including code comments, README updates, and API specs.
• Troubleshooting production issues, perform root-cause analysis, and implementing long-term fixes.
• Mentoring junior engineers and sharing knowledge to uplift the team’s skills and coding standards.
• Collaborating with QA to define and implement test strategies and acceptance criteria.

Skills

Agile/Scrum

Collaborative

Code quality mindset

Tools

React

Node.js

Express.js

Jenkins

GitHub workflows

RESTful APIs

ESLint

Jest

Mocha

Redux

SQL/NoSQL

ORM

Job description

RXinsider LTD. is seeking a collaborative Full Stack Developer to join a fast-paced Agile team. You will own features across frontend and backend using React, Node.js, and Express.js, with a focus on code quality, testing, and CI/CD pipelines (Jenkins).

The ideal candidate has strong experience in React, Node.js, Express.js, RESTful APIs, and GitHub workflows, and will contribute in a cross-functional, quality-driven environment. You’ll mentor peers and help shape scalable web applications.