Senior JavaScript Full Stack Developer
Summary
Senior full-stack developer on a 6-month temporary contract (hybrid, 3 days onsite in Chesterfield, MO) building scalable REST APIs and front ends with React, Node.js, TypeScript, and PostgreSQL on AWS (Lambda, S3, SQS/SNS, Kafka), for a biotech/healthcare client through staffing firm Rose International.
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.).