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Senior Full Stack Developer Jobs in Festus, MO (NOW HIRING)

Leidos

Mid-Level Software Engineer

Fenton, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

East Carondelet, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

Dupo, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

Ballwin, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

Arnold, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

Columbia, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO · On-site

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

Leidos

Mid-Level Software Engineer

Valley Park, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

DCS Corp

Senior Level Software Developer

Saint Louis, MO

$53 - $70/hr

We are seeking a Software Engineer to support our client's intelligence analysis products and ... Cybersecurity, or equivalent technical degree and a minimum of 8 years of experience in full stack ...

Jobsbridge

Sr. Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

Jobsbridge

Sr. Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

Jobsbridge

Sr. Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

Eastman

Senior Software Engineer

Saint Louis, MO · On-site

$119K - $157K/yr

Position Description We are seeking a Senior Software Engineer who is passionate about building ... This role is primarily focused on full-stack software engineering, with additional responsibility ...

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Senior Full Stack Developer information

See Festus, MO salary details

$20

$50

$73

How much do senior full stack developer jobs pay per hour?

As of Aug 11, 2026, the average hourly pay for senior full stack developer in Festus, MO is $50.30, according to ZipRecruiter salary data. Most workers in this role earn between $41.83 and $57.93 per hour, depending on experience, location, and employer.

What is the difference between Senior Full Stack Developer vs Backend Developer?

AspectSenior Full Stack DeveloperBackend Developer
Required SkillsProficiency in both frontend and backend technologies, such as JavaScript, HTML, CSS, and server-side languages like Node.js, Python, or JavaSpecialized in server-side development, working with languages like Java, Python, Ruby, or PHP, and database management
Work EnvironmentCollaborates across frontend and backend teams, often involved in full project lifecycleFocuses primarily on backend systems, APIs, and database integration
Common UsageUsed in roles requiring full project oversight and versatile development skillsUsed in roles focused on server-side logic, database management, and API development

The main difference is that a Senior Full Stack Developer handles both frontend and backend development, providing a comprehensive approach to projects, while a Backend Developer specializes solely in server-side logic and database management. Both roles require strong programming skills, but the Full Stack Developer's expertise spans the entire technology stack.

How does a senior full stack developer typically collaborate with cross-functional teams during a project lifecycle?

As a Senior Full Stack Developer, you'll frequently collaborate with designers, product managers, QA engineers, and other developers to deliver end-to-end solutions. You'll be involved in requirements discussions, offer technical guidance, and help align frontend and backend development with business goals. Your role often includes code reviews, mentoring junior team members, and ensuring seamless integration across various systems. This collaborative environment encourages knowledge sharing and innovation while ensuring project success.

What are the key skills and qualifications needed to thrive as a senior full stack developer, and why are they important?

To thrive as a Senior Full Stack Developer, you need advanced proficiency in both front-end and back-end programming languages, frameworks, and a solid understanding of software architecture, usually supported by a relevant degree and several years of experience. Mastery of tools such as Git, Docker, CI/CD systems, and cloud platforms like AWS or Azure is typically required, alongside familiarity with databases and version control systems. Strong problem-solving abilities, leadership, effective communication, and collaboration skills set exceptional developers apart. These skills and qualities are crucial for delivering robust, scalable solutions while mentoring teams and efficiently bridging gaps between client requirements and technical implementation.

What is a senior full stack developer?

Senior Full Stack Developers are experienced professionals who design, develop, and maintain both the front-end and back-end components of web applications. They are proficient in multiple programming languages and frameworks, enabling them to handle servers, databases, APIs, and user interfaces. In addition to coding, they often lead development teams, make architectural decisions, and ensure software quality and scalability. Their expertise allows them to oversee the entire application lifecycle, from concept to deployment.
What are the most commonly searched types of Full Stack Developer jobs in Festus, MO? The most popular types of Full Stack Developer jobs in Festus, MO are:
What cities near Festus, MO are hiring for Senior Full Stack Developer jobs? Cities near Festus, MO with the most Senior Full Stack Developer job openings:
Senior Full Stack Developer jobs near you
Infographic showing various Senior Full Stack Developer job openings in Festus, MO as of June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $104,616 per year, or $50.3 per hour.

Software Developer | Military Veterans

INflow Federal

Saint Louis, MO • On-site

Full-time

Re-posted 17 days ago

Job description

About INflow Federal - founded in 2013, INflow Federal is a mission-driven small business delivering cutting-edge solutions to the Department of War (DoW) and Joint Force operations across 20+ states. Our strength comes from our people - especially the Veterans who make up over 50% of our workforce. Through our Veteran Outreach Program and employee-first culture, we invest deeply in professional growth, well-being, and innovation. Known for our agility, transparency, and integrity, INflow combines real-world experience with emerging technologies like AI/ML to help our customers lead in a rapidly evolving defense landscape. We empower both our employees and mission partners to stay ahead - driving smarter, faster, and more secure outcomes.
 
Most of our contracts require DoD 8140 (formerly 8570) compliance. We built 8140.study to help you get there. Take a look and start studying today.
Job Overview:

INflow Federal is on the lookout for skilled transitioning military personnel and veterans who are passionate about leveraging their expertise in a new capacity within the government contracting sector. We offer an exceptional chance to progress your career as a Full Stack Software Engineer, allowing you to make a substantial contribution to the warfighter mission while expanding your professional horizon.

Established in 2013, INflow Federal is rooted in a culture that values its workforce above all, a philosophy that we believe is the cornerstone of our success. Our unwavering commitment to our team has consistently fueled our ability to deliver outstanding results for our clients. We take immense pride in our homegrown "Veteran Outreach Program," a testament to our dedication to empowering veterans. This initiative has been a key factor in ensuring that veterans constitute over half of our workforce, a distinction that underscores our adaptability, growth, and forward-looking stance in supporting mission-critical systems and operations.

As a Full Stack Software Engineer at INflow Federal, you will be instrumental in our mission to deliver state-of-the-art technological solutions to our DoD clients, playing a crucial role in the development and deployment of sophisticated software systems. Your expertise will contribute significantly to our strategic goals, facilitating the creation of robust, scalable, and innovative software solutions that enhance our operational capabilities and cybersecurity posture.

Here, your work is more than a job-it's a journey in innovation. With opportunities to work on high-impact projects, access to the latest technologies, and a culture that thrives on creativity and collaboration, INflow Federal is where your expertise can truly make a difference.
Related MOS Codes We're Seeking:
  • Army: 25B, 25C, 25F, 25L, 25N, 25Q, 25S, 25U, 25W, 25X, 94F 
  • USMC (United States Marine Corps): 0600, 0631, 0633, 0639, 0651, 0639, 0681, 0699, 0630, 0605, 0601, 2800, 2813, 2847, 2862, 5900, 5939, 5948, 5970, 5974, 5993
  • USAF (United States Air Force): 1D, 1D7X1A, 1B4X1 - Cyber Warfare Operations, 3D0X2 - Cyber Systems Operations, 3D1X2 - Cyber Transport Systems, 3D1X7 - Cable and Antenna Systems 
  • USN & USCG (United States Navy & United States Coast Guard): ET, ETN, ETV, ETR, Electronics Technician, IT, ITS, Information System Technician, IC, DS, Data Systems Technician 
Various Responsibilities & Requirements:
  • Proficiency in Full Stack Development: Proficiency in front-end and back-end technologies, frameworks, and languages. Familiarity with HTML, CSS, JavaScript, and one or more back-end languages (e.g., Java, Python, Ruby).
  • Cloud Technologies: Knowledge of cloud services, deployment, and management within platforms such as AWS, Azure, or Google Cloud. Ability to leverage cloud capabilities to optimize software solutions.
  • DevOps Practices: Familiarity with continuous integration/continuous deployment (CI/CD) pipelines, automated testing, and deployment strategies to streamline development and enhance collaboration.
  • Version Control Proficiency: Experience with version control systems like Git, understanding branching, merging, and pull request workflows to maintain code quality and collaborative development.
Clearance Requirements :
  • TS/SCI (CI poly required to start)
Certification Requirements
Not 8140 (8570) compliant yet? Most of our contracts require CompTIA Security+ at a minimum. We built 8140.study - our certification training platform - to help. Our complete Security+ course includes a 75-question practice exam.

Other Notes
  • Some travel may be required: Must have valid driver's license and transportation. This is subject to change at the direction of the customer.
  • If accommodation is needed with your application or the interview process for applicants with disabilities, please contact Human Resources at 703-594-8601.
  • Candidate must have the ability to lift up to 50 lbs.
  • Must have willingness to perform duties not listed in the job description as required by INflow and our customer.
Citizenship Requirements
* Please note that INflow Federal is a defense contractor. Pursuant to our government contracts, candidates must be US Citizens to be considered for employment.
Equal Opportunity Employer 
Diversity and Inclusion
INflow provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.
 
This commitment applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, leaves of absence, compensation, and training. Job applicants and employees are evaluated solely on job-related qualifications and experience.
 
 
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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