Senior Software Engineer - Full Stack Developer - React, Node.js

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

Are you a collaborative Full Stack Developer looking to work for a mission driven global organization?

.

About the role

We are seeking a highly capable Software Engineer to join our fast-paced, Agile development team. This full-stack JavaScript engineer will own and contribute to features across the frontend and backend, partnering closely with product, design, and QA. The ideal candidate has solid experience with React, Node.js, and Express.js, a practical understanding of CI/CD pipelines (preferably Jenkins), and a strong commitment to code quality, testing, and collaborating in an Agile environment. Fluency with GitHub workflows and pull-request-based collaboration is essential

About the team

As a Sr Software Engineer you have the opportunity to join a diverse team of technologists as we continue to build mission critical products in the Health Markets spac

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Responsibili

• tiesDesigning, 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 A
• PIs.Implementing automated tests (unit/integration) and ensure code quality through reviews and best practi
• ces.Collaborating in an Agile/Scrum environment: participate in standups, sprints planning, backlog grooming, and de
• mos.Contributing to CI/CD pipelines and release processes; work with Jenkins to build, test, and deploy featu
• res.Writing and maintaining comprehensive documentation, including code comments, README updates, and API sp
• ecs.Troubleshooting production issues, perform root-cause analysis, and implementing long-term fi
• xes.Mentoring junior engineers and sharing knowledge to uplift the team’s skills and coding standa
• rds.Collaborating with QA to define and implement test strategies and acceptance crite

lders.

ria.

Required Qualific

• ationsProfessional software development experience in full-stack JavaS
• cript.Proficiency with React (hooks, state management, component design) and modern JavaScript/TypeS
• cript.Experience with Node.js and Express.js for API develo
• pment.Demonstrated 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; familiarity with Jest, Mocha, or sim
• ilar).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 alternat
• ives).Familiarity with other back-end technologies or databases (e.g., SQL/NoSQL) and ORM/query bui

lders.