Senior JavaScript Full Stack Developer

Rose International; Chesterfield (MO); Hybrid; USD 90,000 - 103,000; Full time

Job summary

Rose International in Chesterfield, MO is seeking a Senior JavaScript Full Stack Developer to build scalable web applications using ReactJS, NodeJS, and TypeScript. This is a temporary, full-time hybrid position based in Chesterfield with a 3 days onsite/2 days remote schedule.

The role requires 5+ years of JavaScript full-stack experience, strong ReactJS and NodeJS skills, AWS familiarity, and PostgreSQL expertise. Bachelor’s is required; Master’s preferred.

Qualifications

• Bachelor's degree in computer science or a similar technical field.
• 10+ years JavaScript experience; 10+ years NodeJS; 5+ years ReactJS; 4+ years AWS; 5+ years PostgreSQL.
• Strong knowledge of HTML5, CSS3, and front-end web technologies.
• Experience building scalable REST APIs and cloud-based solutions.

Responsibilities

• Develop scalable REST APIs hosted in cloud environments.
• Create high-quality, maintainable code with unit tests (Jest).
• Collaborate with product teams and other engineers in a product-driven agile setup.

Skills

Full Stack

JavaScript

React.JS

NodeJS

TypeScript

AWS

PostgreSQL

REST APIs

Jest

Education

Bachelor's Degree

Master's Degree

Tools

NodeJS

AWS

PostgreSQL

TypeScript

S3

SQS

Kafka

Lambda

Job description

Date Posted: 09/03/2026

Hiring Organization: Rose International

Position Number: 506888

Industry: Biotech/Healthcare

Job Title: Senior JavaScript Full Stack Developer

Job Location: Chesterfield, MO, USA, 63005

Work Model: Hybrid

Work Model Details: Hybrid -3 days onsite and 2 days remote

Employment Type: Temporary

FT/PT: Full-Time

Estimated Duration (In months): 6

Min Hourly Rate($): 65.00

Max Hourly Rate($): 75.00

Must Have Skills/Attributes: Full Stack, JavaScript, React.JS

Experience Desired: Experience in NodeJS (10 yrs); Exeprience in ReactJS (5 yrs); Experience in TypeScript (10 yrs); Exeprience in SQL queries (8 yrs)

Required Minimum Education: Bachelor’s Degree

Preferred Education: Master’s Degree

**C2C is not available**

Job Description

Required Education

• Bachelor's degree in computer science or a similar technical field

Preferred Education

• Master's degree in computer science, similar technical field

Required Experience

• JavaScript - 10+ years
• Nodejs - 10+ years
• Reactjs - 5+ years
• AWS - 4+ years
• PostgreSQL - 5+ years

Job Overview

• 5+ years of experience as a JavaScript full-stack developer
• Strong experience in ReactJS, NodeJS, and TypeScript
• Good programmer - able to write clean, maintainable, well-structured code, follow popular paradigms, good practices, and local guidelines.
• Experience in Cloud (preferably AWS - Lambdas, S3, SQS, SNS, Kafka, Step Functions).
• Experience with front-end web technologies (e.g., HTML5, CSS3, JavaScript)
• Unit testing using Jest, react-testing-library
• Experience building highly scalable REST APIs hosted on could environment
• Strong Experience designing databases in PostgreSQL
• Product-oriented – able to take a deep dive into the business domain, and partner with product experts to suggest improvements and pragmatic solutions
• Experience in working in a product-oriented agile organization
• Some flexibility to work with a global team across time zones
• Problem-solving skills, proactivity, and being a team player
• Willingness to learn, develop, & innovate
• **Only those lawfully authorized to work in the designated country associated with the position will be considered.**
• **Please note that all Position start dates and duration are estimates and may be reduced or lengthened based upon a client’s business needs and requirements.**

Benefits

For information and details on employment benefits offered with this position, please visit here. Should you have any questions/concerns, please contact our HR Department via our secure website.

California Pay Equity

For information and details on pay equity laws in California, please visit the State of California Department of Industrial Relations' website here.

Rose International is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender (expression or identity), national origin, arrest and conviction records, disability, veteran status or any other characteristic protected by law. Positions located in San Francisco and Los Angeles, California will be administered in accordance with their respective Fair Chance Ordinances.

If you need assistance in completing this application, or during any phase of the application, interview, hiring, or employment process, whether due to a disability or otherwise, please contact our HR Department.

Rose International has an official agreement (ID #132522), effective June 30, 2008, with the U.S. Department of Homeland Security, U.S. Citizenship and Immigration Services, Employment Verification Program (E-Verify). (Posting required by OCGA 13/10-91.).