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Principal Full Stack Developer Jobs in Missouri (NOW HIRING)

Leidos

Journeyman Full Stack Developer

Saint Louis, MO · On-site

$69K - $125K/yr

The Leidos National Solutions Division has an exciting opportunity for a Journeyman Full Stack Engineer to assist with the software development, maintenance, integration, deployment, and sustainment ...

Leidos

Journeyman Full Stack Developer

Saint Louis, MO · On-site

$69K - $125K/yr

The Leidos National Solutions Division has an exciting opportunity for a Journeyman Full Stack Engineer to assist with the software development, maintenance, integration, deployment, and sustainment ...

Leidos LLC

Journeyman Full Stack Developer

Saint Louis, MO · On-site

$69K - $125K/yr

The Leidos National Solutions Division has an exciting opportunity for a Journeyman Full Stack Engineer to assist with the software development, maintenance, integration, deployment, and sustainment ...

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO · On-site

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful candidate will also provide best practices to design single-page architecture (SPA) applications and micro ...

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO · On-site

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful candidate will also provide best practices to design single-page architecture (SPA) applications and micro ...

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All JobsPrincipal Full Stack Developer JobsPrincipal Full Stack Developer Jobs in Missouri

Principal Full Stack Developer information

What is a principal full stack developer?

A Principal Full Stack Developer is a senior-level software engineer who leads the design, development, and implementation of complex web applications across both front-end and back-end technologies. They possess deep expertise in multiple programming languages, frameworks, and cloud platforms, and often set technical direction and standards for their teams. Principal Full Stack Developers also mentor other engineers, collaborate with stakeholders, and ensure that solutions are scalable, secure, and maintainable. Their role is critical in bridging the gap between business requirements and technical solutions.

What are the key skills and qualifications needed to thrive as a principal full stack developer?

To thrive as a Principal Full Stack Developer, you need advanced expertise in both front-end and back-end development, strong coding abilities in languages like JavaScript, Python, or Java, and a track record of leading technical projects. Mastery of frameworks (such as React, Angular, Node.js), cloud platforms (AWS, Azure), and version control systems (Git), along with relevant certifications, are commonly required. Exceptional problem-solving, leadership, and communication skills help you mentor teams and drive architectural decisions. These abilities are critical for delivering robust, scalable software solutions and leading development teams effectively.

What are some common challenges faced by principal full stack developers when leading cross-functional teams?

Principal Full Stack Developers often face the challenge of balancing technical leadership with effective communication across diverse teams, such as frontend, backend, and DevOps. They are responsible for aligning various stakeholders, resolving architectural disagreements, and ensuring that project goals are met on time. Navigating differences in technical expertise and priorities requires strong interpersonal skills and the ability to mentor team members while upholding best practices. Additionally, they must stay updated with evolving technologies to make informed decisions that impact the whole stack.

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

AspectPrincipal Full Stack DeveloperSenior Full Stack Developer
CredentialsTypically requires 8+ years of experience, advanced technical certificationsUsually 5+ years of experience, relevant certifications
Work EnvironmentLeads technical strategy, mentors teams, influences architectureDevelops features, mentors juniors, implements solutions
Employer & Industry UsageUsed in large tech companies, enterprise environmentsCommon across startups, mid-sized companies, tech firms

The Principal Full Stack Developer focuses on technical leadership, architecture, and strategic planning, often mentoring teams and influencing project direction. In contrast, the Senior Full Stack Developer primarily executes development tasks, supports team members, and contributes to project delivery. Both roles require strong technical skills, but the Principal role emphasizes leadership and vision.

Is a principal full stack developer still in demand?

Yes, principal full stack developers are in high demand due to their expertise in both front-end and back-end development, as well as their ability to lead technical projects. Companies seek these professionals for their skills in modern frameworks, cloud platforms, and software architecture, making the role valuable across many industries.

What cities in Missouri are hiring for Principal Full Stack Developer jobs?

Cities in Missouri with the most Principal Full Stack Developer job openings:

Full Stack Developer 729

Saint Louis, MO • On-site

Freedom Technology Solutions Group
See more jobs at Freedom Technology Solutions Groupexternal

Full-time

Re-posted 24 days ago

Key responsibilities

  • Design, develop, and maintain web applications, APIs, backend services, and cloud-native microservices.

  • Integrate applications with geospatial services and enterprise APIs, and support deployment and performance optimization.

  • Collaborate with stakeholders to gather, document, and refine requirements, and support system integration efforts.

Job description

Freedom Technology Solutions Group is seeking a Full Stack Software Engineer to develop modern cloud-native applications supporting mission-critical intelligence and geospatial platforms. You will design, develop, and maintain user interfaces, APIs, backend services, and cloud-native microservices that enable analysts and mission partners to securely discover, process, and exploit geospatial data.

This is a hands-on software engineering role working across the full technology stack from responsive web applications to scalable backend services and cloud infrastructure.

Responsibilities:

  • A
  • Design and develop modern web applications
  • Develop RESTful APIs and backend services 
  • Build cloud-native microservices
  • Develop responsive user interfaces
  • Integrate with geospatial services and enterprise APIs
  • Build automated testing pipelines
  • Participate in Agile development
  • Support CI/CD deployments
  • Optimize application performance
  • Troubleshoot production systems
  • Collaborate with architects, data scientists, and mission stakeholders to gather, document, and refine customer requirements, including data mapping and integration needs
  • Assist in implementing integration solutions in collaboration with development team members 
  • Facilitate communication between stakeholders to ensure timely and effective requirements execution
  • Ensure activities align with established processes, standards, and mission objectives
  • Contribute to documentation of processes, procedures, integration patterns, and lessons learned

Key Technologies:

  • Familiarity with backend systems and integration concepts (APIs, data mapping, file-based transfers)
  • Experience with AWS services (S3, Lambda, SQS, SNS, ECS, ECR, EKS, API Gateway, Cloudwatch, KMS)
  • Familiarity with CI/CD pipelines (GitLab CI/CD or similar)
  • Understanding of containerized and serverless environments
  • Familiarity with data transfer and file processing concepts
  • Familiarity with dashboards, metrics, and operational visibility tools
  • Understanding of secure data handling and access control concepts (IAM, least privilege)

Frontend

  • JavaScript - React, Angular, HTML5, CSS3

DevOps

  • Docker, Podman, Kubernetes
  • GitLab, Harbor
  • CloudFormation, CDK, Terraform, other IaaC
  • Linux

Backend

  • Auroa, PostgreSQL/PostGIS, Oracle (w/spatial)
  • KVS - Redis, Memcache, Elasticache
  • GDAL/OGR etc.
  • Other storage tech (s3, NFS, CIFS, SAMBA, NAS, SAN, DAS, etc)

Required Qualifications:

  • Active TS/SCI clearance (eligible for CI Poly) 
  • 1-3(Junior), 3-7(Journeyman), 8-11 (Senior), >12 (Principal) years of experience in software development, system integration, or technical support roles
  • Experience working directly with customers or stakeholders in a technical or mission environment
  • Strong communication and coordination skills across technical and non-technical teams
  • Experience gathering and documenting requirements
  • Ability to manage multiple tasks and priorities in a dynamic environment
  • Familiarity with Agile development practices
  • Experience using GitLab or similar tools for collaboration and tracking

Desired Qualifications:

  • Familiarity secure data movement environments
  • Experience working with enterprise service processes such as Service+
  • Development or scripting experience (Python, JavaScript, or similar)
  • Experience with data mapping or integration workflows (using JSON or other object notation)
  • Familiarity with operational dashboards and metrics reporting
  • Experience supporting customer requirement implementation and/or system integration efforts
  • Experience building cloud-native applications
  • Experience with microservices
  • Experience with geospatial applications
  • Experience with mapping frameworks
  • Experience with GDAL or geospatial libraries
  • Experience supporting Intelligence Community customers

Apply