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Senior Full Stack Engineer Jobs in Missouri (NOW HIRING)

Stereotaxis

Senior Full Stack Developer

Saint Louis, MO · On-site

Shift Type Job Title Senior Full Stack Developer Education Bachelor's Degree Location Stereotaxis - St. Louis, MO 63101 US (Primary) Career Level Experienced (Non-Manager) Category R&D Date Needed By ...

Booz Allen Hamilton

AWS Full Stack Engineer

Arnold, MO

$99K - $225K/yr

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 ...

Jobgether

Our partner is looking for a Full-stack Engineer based in Netherlands. Join a mission-driven engineering team building products at the intersection of technology, science, and decentralized ...

Jobgether

As a Sr Enterprise Full Stack Developer, you will play a key role in designing, modernizing, and enhancing enterprise software solutions within a complex business environment. This position combines ...

Nato

We're looking for 3 Full-stack Engineers who thrive on solving complex problems, designing robust ... As a senior engineer, you'll combine hands-on coding with architectural leadership , ensuring our ...

NATO

We're looking for 3 Full-stack Engineers who thrive on solving complex problems, designing robust ... As a senior engineer, you'll combine hands-on coding with architectural leadership , ensuring our ...

Academy Bank

Full Stack Developer

Kansas City, MO

As a Full Stack Developer, you will collaborate closely with the newly formed teams to ensure seamless integration of development and operations practices and contribute to the overall technology ...

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All JobsFull Stack Engineer JobsSenior Full Stack Engineer JobsSenior Full Stack Engineer Jobs in Missouri

Senior Full Stack Engineer information

See Missouri salary details

$41.7K

$126.4K

$178.7K

How much do senior full stack engineer jobs pay per year?

As of Jul 29, 2026, the average yearly pay for senior full stack engineer in Missouri is $126,415.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,100.00 and $148,200.00 per year, depending on experience, location, and employer.

What engineer makes $500,000 a year?

Senior Full Stack Engineers with extensive experience, specialized skills in technologies like React, Node.js, and cloud platforms, and working at large tech companies or in high-demand industries can earn $500,000 or more annually. Compensation often includes base salary, bonuses, and stock options, especially in competitive markets or executive-level roles.

What is the difference between Senior Full Stack Engineer vs Software Developer?

AspectSenior Full Stack EngineerSoftware Developer
CredentialsBachelor's degree in CS or related field; experience often requiredBachelor's degree in CS or related field; entry-level to mid-level experience
Work EnvironmentCollaborates across front-end and back-end teams, often in agile settingsFocuses on coding, testing, and debugging software applications
Industry UsageCommon in tech companies, startups, and enterprise software firmsWidely used across various industries for software development roles

While both roles involve coding and software development, a Senior Full Stack Engineer typically has broader responsibilities across both front-end and back-end systems, often with more experience and leadership duties compared to a Software Developer, who may focus on specific parts of the software stack.

What are Senior Full Stack Engineers?

Senior Full Stack Engineers are experienced software developers who are proficient in both front-end and back-end technologies. They design, build, and maintain complex web applications, overseeing the entire software development process from user interface to server-side logic and databases. In addition to coding, they often mentor junior developers, lead technical decisions, and ensure best practices are followed throughout the project lifecycle. Their broad skill set allows them to bridge the gap between different development teams and deliver cohesive, high-quality solutions.

How do Senior Full Stack Engineers typically balance hands-on coding with mentoring and leading team projects?

Senior Full Stack Engineers often split their time between developing complex features, reviewing code, and guiding junior team members. Alongside hands-on coding, they play a key role in architectural decisions, ensuring code quality, and fostering best practices across the team. Effective communication and delegation skills are crucial, as they frequently collaborate with product managers, designers, and other engineers to align technical solutions with business goals. This balance provides opportunities for leadership growth while keeping technical skills sharp.

Is full-stack worth it in 2026?

For a Senior Full Stack Engineer, full-stack development remains valuable in 2026 due to ongoing demand for versatile developers skilled in both front-end and back-end technologies. Staying current with frameworks like React, Node.js, and cloud platforms enhances employability and career growth in this field.

What engineers make $300,000 a year?

Senior Full Stack Engineers with extensive experience, specialized skills in technologies like cloud computing, and working in high-demand industries can earn $300,000 or more annually. Compensation often includes base salary, bonuses, and stock options, especially in large tech companies or startups with significant funding.

What is the highest salary for a full-stack engineer?

The highest salaries for senior full-stack engineers can exceed $150,000 to $200,000 annually, especially in high-cost living areas or with extensive experience, specialized skills, and knowledge of frameworks like React, Node.js, or cloud platforms. Top-tier professionals with leadership roles or unique expertise may earn even higher compensation packages, including bonuses and stock options.

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

To thrive as a Senior Full Stack Engineer, you need deep proficiency in front-end and back-end development, strong problem-solving skills, and a solid foundation in computer science, often supported by a relevant degree or equivalent experience. Familiarity with frameworks like React or Angular, back-end technologies such as Node.js or Java, cloud services, and version control systems like Git is typically required, along with experience in CI/CD and testing tools. Excellent communication, leadership, and collaboration skills help you guide teams and coordinate across disciplines. These skills are crucial for delivering scalable, high-quality software solutions and effectively leading complex projects.
What are the most commonly searched types of Full Stack Engineer jobs in Missouri? The most popular types of Full Stack Engineer jobs in Missouri are:
What cities in Missouri are hiring for Senior Full Stack Engineer jobs? Cities in Missouri with the most Senior Full Stack Engineer job openings:
Infographic showing various Senior Full Stack Engineer job openings in Missouri as of July 2026, with employment types broken down into 93% Full Time, 5% Part Time, and 2% Contract. Highlights an 86% Physical, 5% Hybrid, and 9% Remote job distribution, with an average salary of $126,415 per year, or $60.8 per hour.

Senior Full-Stack Engineer

Human Agency

Saint Louis, MO • On-site

Full-time, Contractor

Posted 27 days ago

Job description

Location: US or Canada
Type: US Applicants - Full-Time; Canadian Applicants - Independent Contractor
About Human Agency
We're scaling rapidly and have a growing pipeline of opportunities that demand exceptional talent across disciplines. Our mission is to bring on individuals, from creative producers to technical experts to entrepreneurial leaders, who can help us realize this next chapter of growth.
We are a company of doers. Leaders roll up their sleeves, teams work flat, and everyone contributes to what ships. Titles don't insulate us from feedback or basics. We invite critique, learn quickly, and keep raising the bar. The best ideas win here, no matter where they come from, because clients trust us to deliver the strongest outcomes every time.
Our clients' missions, products, and bottom lines are sacred. We immerse ourselves in their world, becoming stewards of their goals and partners in solving big problems. Every product, strategy, or asset we create must be both beautiful and functional; practical, usable, and designed for real-world impact.
Humans are our most valuable resource, and we only grow by hiring people who push us forward. Across strategy, engineering, design, data, and operations, we seek out teammates who raise the bar and make us better. Always hire up, never down.
We partner with organizations of all sizes to explore, design, and implement AI strategies that are secure, scalable, and human-centered. We believe AI should amplify human potential, not replace it and we build with that conviction in every engagement. From advisory and tooling to implementation and education, we meet clients where they are at and help them integrate AI in ways that align with their mission and values. Our goal is to empower teams to work smarter, move faster, and unlock new possibilities through thoughtful, responsible innovation.
And through it all, we lead with purpose, love, and adventure. We do meaningful work with people we care about, and we make the ride an adventure worth taking. Because at Human Agency, who we are and how we work are one and the same.
The Opportunity
At Human Agency, we are shaping the future by combining cutting-edge AI solutions with intuitive software development. We specialize in building scalable and secure SaaS applications that empower enterprise clients to solve complex problems efficiently. As part of our team, you'll work on high-impact projects at the intersection of AI, machine learning, and secure software engineering.
We're seeking a Senior Full-Stack Engineer to join our growing team. In this role, you'll lead development initiatives, contribute to our SaaS products, and tackle exciting challenges in backend architecture, frontend design, and AI/ML integrations with a particular focus on generative AI technologies.
Responsibilities
SaaS Application Development
  • Detection:
    • Develop backend algorithms to process articles, chunk content, and integrate with LLMs for predictive text generation.
    • Build APIs and services to manage and scale the application's content workflow.
  • Protection:
    • Create secure PDF upload workflows with encryption to ensure compatibility with Adobe Acrobat.
    • Integrate authentication mechanisms like Okta for enterprise customer admin management.
    • Enable data recovery, auditing capabilities, and enterprise-grade administrative tools.
AI/ML and Algorithm Development
  • Collaborate with AI/ML teams to operationalize models such as OCR (Optical Character Recognition) and generative AI-based solutions (e.g., GPT models).
  • Implement RAG (Retrieval-Augmented Generation) use cases using vector databases and data embedding techniques to enhance application functionality.
  • Design workflows for large-scale data processing that enable efficient AI integrations and create dynamic AI-first features, such as custom GPTs tailored to enterprise needs.
DevOps & Operationalization
  • Establish CI/CD pipelines and formal release structures for software delivery.
  • Conduct security evaluations to identify vulnerabilities and optimize performance across AI-driven SaaS applications.
  • Manage infrastructure and workflows for custom AI solutions, including tools like Snowflake and LangChain.
Future-Focused Development
  • Build integrations and proof-of-concept applications leveraging company-specific datasets and AI technologies.
  • Evaluate and implement tools for classification, indexing, and secure data management that incorporate the latest in generative AI advancements.
  • Support the development of enterprise-grade AI solutions, including internal AI models and custom LLMs.
Requirements
Core Technical Skills
  • Proficiency in Python and Ruby on Rails, with significant backend experience.
  • Experience in designing secure systems, including encryption workflows and document protection mechanisms.
  • Hands-on expertise in integrating generative AI tools, such as OpenAI APIs, LangChain, or Hugging Face frameworks, into SaaS applications.
  • Strong knowledge of RAG techniques, vector databases (e.g. Pinecone, Weaviate), and embedding pipelines.
  • Ability to operationalize AI/ML models and build workflows for enterprise clients.
  • Frontend development experience in modern frameworks (e.g, React, Vue), with the ability to assess and recommend appropriate tech stacks.
Nice-to-Have Skills
  • Computer vision and OCR expertise, especially for processing and indexing complex document workflows.
  • Experience with authentication systems (e.g., Okta) and enterprise administrative tools.
  • Experience in DevOps, CI/CD pipelines, and secure release management.
  • Background in security evaluations, vulnerability assessments, and tool integrations.
Other Requirements
  • Strong testing background with experience in automated and manual testing.
  • Ability to manage data recovery, audits, and compliance workflows.
  • Strong problem-solving and analytical skills, with attention to detail in complex environments.
  • Excellent communication skills and the ability to work collaboratively across teams.
Why Join Us?
  • Be part of a cutting-edge team solving complex problems in AI and SaaS development.
  • Work on impactful projects with enterprise clients and cutting-edge technologies.
  • Grow your career in a collaborative, innovative, and supportive environment.

If you're excited about working on secure, scalable systems while integrating advanced AI and ML capabilities, we'd love to hear from you.
Equal Opportunity Commitment
Human Agency is an Equal Opportunity Employer. We value diverse backgrounds and strive to build an inclusive culture where everyone feels welcomed and empowered.

Apply