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Senior Mern Stack Developer Jobs in Missouri (NOW HIRING)

Full Stack Developer

Saint Louis, MO · On-site

$90K - $189K/yr

CACI is seeking a highly skilled Senior Full Stack Developer to join our development team. In this role, you will be responsible for designing, developing, and maintaining sophisticated web ...

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senior .net developer

Missouri City, MO

$51.50 - $65.50/hr

NET stack (WISA, WINS) C#, WPF * Recent 1+ years of developing web application in open source stack (MEAN, MERN) * 2+ years of writing code in JS (ES6), JQuery, HTML, CSS, C# * At Least 5+ years of ...

Our partner is looking for a Senior Full-Stack Engineer based in Netherlands. This is a senior engineering opportunity within a fast-growing consumer AI platform serving students across multiple ...

As a senior full stack developer at Booz Allen, you'll use your passion to master new tools and techniques and identify needed system improvements. You'll help clients overcome their most difficult ...

Sr. Java Full Stack Developer

O Fallon, MO · On-site

$49 - $63.25/hr

Have proficiency in Quality engineering and experience working with Quality leads to define processes and technologies. Passion for improving code quality using approaches such as unit and end to end ...

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Senior Mern Stack Developer information

What is a Senior MERN Stack Developer?

A Senior MERN Stack Developer is an experienced software engineer who specializes in building full-stack web applications using the MERN stack: MongoDB, Express.js, React, and Node.js. They handle both front-end and back-end development, create scalable and efficient applications, and often mentor junior team members. In addition to coding, they may be responsible for designing application architecture, optimizing performance, and ensuring best practices throughout the development process.

How does a Senior MERN Stack Developer typically collaborate with other team members on large-scale projects?

As a Senior MERN Stack Developer, you’ll often work closely with front-end and back-end developers, UI/UX designers, QA engineers, and product managers to deliver robust web applications. Collaboration usually involves participating in code reviews, architectural discussions, sprint planning, and daily stand-up meetings. You may also mentor junior developers, help define best practices, and ensure seamless integration across the MERN (MongoDB, Express, React, Node.js) stack. Effective communication and teamwork are essential, especially when troubleshooting complex issues or deploying new features.

What are the key skills and qualifications needed to thrive as a Senior MERN Stack Developer, and why are they important?

To thrive as a Senior MERN Stack Developer, you need deep expertise in JavaScript, proficiency with MongoDB, Express.js, React.js, and Node.js, and typically a bachelor's degree in computer science or related field. Experience using source control systems like Git, familiarity with cloud platforms (e.g., AWS), and understanding of CI/CD pipelines are highly valued. Strong problem-solving, leadership, and effective communication skills help you guide teams and collaborate with stakeholders. These skills ensure efficient development of scalable web applications and effective team leadership in dynamic tech environments.

Is a Senior MERN Stack Developer full-stack in demand?

A Senior MERN Stack Developer, skilled in MongoDB, Express.js, React, and Node.js, is in high demand due to the popularity of JavaScript-based full-stack development. Companies seek experienced developers for building scalable web applications, and proficiency in these technologies often leads to strong job prospects and competitive salaries.

Is senior MERN stack developer still in demand in 2026?

Senior MERN stack developers remain in demand in 2026 due to the continued growth of web applications and the popularity of JavaScript frameworks. Skills in React, Node.js, and MongoDB are highly valued, especially for roles requiring full-stack expertise and experience with cloud deployment and modern development tools.

What is a typical senior MERN stack developer salary?

A senior MERN stack developer typically earns between $100,000 and $150,000 annually, depending on experience, location, and company size. Strong skills in React, Node.js, MongoDB, and Express are often required, and salaries tend to increase with expertise and certifications.

What are the most commonly searched types of Mern Stack Developer jobs in Missouri?

The most popular types of Mern Stack Developer jobs in Missouri are:

What are popular job titles related to Senior Mern Stack Developer jobs in Missouri?

For Senior Mern Stack Developer jobs in Missouri, the most frequently searched job titles are:

What cities in Missouri are hiring for Senior Mern Stack Developer jobs?

Cities in Missouri with the most Senior Mern Stack Developer job openings:

Infographic showing various Senior Mern Stack Developer job openings in Missouri as of August 2026, with employment types broken down into 90% Full Time, 5% Part Time, 4% Contract, and 1% Nights. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution.

Full Stack Developer

Saint Louis, MO • On-site

$90K - $189K/yr

Full-time

Medical, Retirement, PTO

Posted 2 days ago

New


Job description

Job Title: Full Stack Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * The Opportunity: CACI is seeking a highly skilled Senior Full Stack Developer to join our development team. In this role, you will be responsible for designing, developing, and maintaining sophisticated web applications that support corporate operations at the National Geospatial-Intelligence Agency. You will work in a collaborative environment, leveraging modern frameworks and cloud technologies to deliver robust, scalable, and secure solutions.

This is an opportunity to contribute to high-impact projects. Responsibilities: Development: Design and implement responsive, high-performance front-end architectures using Angular. Back-End: Develop and optimize server-side logic and integrate complex data storage solutions using JavaScript or TypeScript.

Architecture: Contribute to the overall system architecture, ensuring scalability, security, and maintainability. Collaboration: Work closely with cross-functional teams, including product managers and security specialists, to define requirements. Mentorship: Provide technical leadership and guidance to junior developers through code reviews and best practices.

Security: Ensure all development adheres to strict security protocols and DoW/IC standards Qualifications: Required: Active Top Secret Security clearance or higher 7+ years experience in full-stack web development. Expertise in Angular (v2+) and modern TypeScript development. Proficiency in HTML5, CSS3, and responsive design principles.

Experience with RESTful API design and integration. Strong understanding of Software Development Life Cycle (SDLC) in a secure environment. Desired: Experience with MarkLogic or other NoSQL database technologies.

Working knowledge of AWS (Amazon Web Services) cloud infrastructure. Experience with DevOps practices and CI/CD pipelines (e.g., Jenkins, GitLab CI). Familiarity with containerization technologies like Docker and Kubernetes

- What You Can Expect: A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation.

An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth. Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy. Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications.

Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families.

At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. Since this position can be worked in more than one location, the range shown is the national average for the position. The proposed salary range for this position is: $90,300-$189,600 CACI is an Equal Opportunity Employer.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.