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Contractual Junior Mern Stack Developer Jobs in Washington

Pantheon Data

Senior Full Stack Developer

Reston, VA · On-site

$145K - $200K/yr

Mentor junior developers and contribute to code review, design review, and engineering standards ... Rather, salary will be set based on experience, geographic location and possibly contractual ...

CACI

Full Stack Developer

Springfield, VA · On-site

$90K - $189K/yr

Full Stack Developer Job Category: Information Technology Time Type: Full time Minimum Clearance ... Provide technical leadership and guidance to junior developers through code reviews and best ...

CACI

Full Stack Developer

Springfield, VA · On-site

$105K - $231K/yr

Full Stack Developer Job Category: Information Technology Time Type: Full time Minimum Clearance ... Provide technical leadership and guidance to junior developers through code reviews and best ...

Analytica

Full Stack Developer

Bethesda, MD · On-site

For senior-level candidates, provide technical leadership, mentor junior developers, and contribute ... Stack Developer, Software Engineer, or similar technical role. * Experience developing web ...

Analytica

Full Stack Developer

Bethesda, MD · On-site

For senior-level candidates, provide technical leadership, mentor junior developers, and contribute ... Stack Developer, Software Engineer, or similar technical role. * Experience developing web ...

BasisPath, Inc.

Full Stack Developer

Alexandria, VA · On-site

We are seeking an experienced Full Stack Software Developer to join our team and provide software ... contractual commitments. We provide a comprehensive benefits package including signing bonuses ...

KBR

Full Stack Developer

Mclean, VA · On-site

$205K - $251K/yr

Full Stack Developer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team ... contractual designation. Additional compensation may be in the form of sign on bonus, relocation ...

SteerBridge

Senior Software Engineer - Aviation

Vienna, VA · On-site

$123K - $162K/yr

Proficiency in the PERN/MERN Stack (PostgreSQL, MongoDB, Express.js, React.js, Node.js). * Solid ... Ability to guide junior team members in developing clean, maintainable, and declarative code.

KBR

Full Stack Developer

Mclean, VA · On-site

$205K - $251K/yr

Full Stack Developer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team ... contractual designation. Additional compensation may be in the form of sign on bonus, relocation ...

KBR, Inc.

Full Stack Developer

Mclean, VA · On-site

$205K - $251K/yr

Full Stack Developer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team ... contractual designation. Additional compensation may be in the form of sign on bonus, relocation ...

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Contractual Junior Mern Stack Developer information

What is a contractual junior MERN stack developer?

Contractual Junior MERN Stack Developers are professionals hired on a temporary or project-based basis to work with the MERN technology stack, which includes MongoDB, Express.js, React, and Node.js. As juniors, they typically have foundational knowledge and limited experience, often working under the supervision of more senior developers. Their responsibilities often include building and maintaining web applications, fixing bugs, and assisting with the development of both front-end and back-end features. The contractual nature of the role means their employment is for a set period or until a particular project is completed.

What are the key skills and qualifications needed to thrive as a contractual junior MERN stack developer?

To thrive as a Contractual Junior MERN Stack Developer, you need a solid understanding of JavaScript, HTML, CSS, and hands-on experience with MongoDB, Express.js, React.js, and Node.js, often supported by a degree in computer science or a related field. Familiarity with version control systems like Git, cloud platforms such as AWS, and knowledge of RESTful APIs or relevant certifications are highly valuable. Strong problem-solving skills, adaptability, and effective communication help you collaborate with teams and quickly address technical challenges. These skills and qualities are crucial for building efficient web applications, integrating seamlessly with teams, and delivering quality results within tight contractual timelines.

What are the typical challenges faced by a contractual junior MERN stack developer when joining a new project?

As a Contractual Junior MERN Stack Developer, one of the primary challenges is quickly adapting to existing codebases and workflows, as contractors are often brought in to support ongoing projects. You'll need to familiarize yourself with the team's development practices, version control processes, and project-specific conventions. Communication is key, as you'll collaborate closely with senior developers and possibly designers or product managers to ensure your contributions align with project goals. Time management and the ability to ask questions early are crucial for success in a contract role, where onboarding periods are usually brief.

What is the difference between Contractual Junior Mern Stack Developer vs Contractual Front End Developer?

AspectContractual Junior Mern Stack DeveloperContractual Front End Developer
Required SkillsJavaScript, React, Node.js, MongoDB, basic backend & frontend knowledgeHTML, CSS, JavaScript, React or Angular, UI/UX design
Work EnvironmentFull-stack development in a collaborative team, often in startups or tech companiesFrontend-focused projects, UI/UX design, client-side development
Common UsageUsed in roles requiring full-stack capabilities with a focus on MERN stackUsed in roles emphasizing user interface and experience

The Contractual Junior Mern Stack Developer typically handles both frontend and backend tasks using the MERN stack, requiring knowledge of JavaScript, React, Node.js, and MongoDB. In contrast, the Contractual Front End Developer specializes mainly in client-side development, focusing on UI/UX design and frontend technologies. Both roles are common in tech companies but differ in scope and technical focus.

Contractual Junior Mern Stack Developer jobs near you
Infographic showing various Contractual Junior Mern Stack Developer job openings in Washington as of June 2026, with employment types broken down into 89% Full Time, 8% Part Time, and 3% Contract. Highlights an 90% Physical, 2% Hybrid, and 8% Remote job distribution.

Senior Full Stack Developer

Pantheon Data

Reston, VA • On-site

$145K - $200K/yr

Full-time

Posted 6 days ago

Job description

Company Overview
Pantheon Data (a Kenific Holding company) is a private, small business based in the Washington, DC, area. Pantheon Data was founded in 2011, initially providing acquisition and supply chain management services to the US Coast Guard. Our service offerings have grown in the past ten years, including infrastructure resiliency, contact center operations, information technology, software engineering, program management, strategic communications, engineering, and cybersecurity. We have also grown our customer base to include commercial clients. The company has used this experience to expand our service offerings to other agencies within the Department of Homeland Security (DHS), the Department of Defense (DoD), and other Federal Civilian Agencies.
Position Overview
We are seeking a hands-on Senior Full Stack Developer to design, build, integrate, and maintain modern software systems that support complex government and commercial technology programs. The right candidate is a strong engineer who can move comfortably across the stack: user interfaces, APIs, services, databases, cloud infrastructure, DevSecOps pipelines, observability, security controls, and system integrations.
This role is intended for a senior individual contributor who can work independently, make sound implementation decisions, and help raise the technical quality of the team. The ideal candidate should show the judgment, curiosity, and ownership needed to take a loosely defined technical problem, reason through the tradeoffs, and turn it into working, maintainable software.
Experience with AI/ML-enabled applications, document processing, data platforms, or secure cloud environments is valuable as well, but the core requirement is full stack engineering depth: the ability to build reliable features, understand system boundaries, debug across layers, and deliver software that is usable, secure, and supportable.
Responsibilities
Full Stack Application Development
  • Design, develop, and maintain front-end and back-end components for modern web applications and internal engineering tools.
  • Build responsive, usable interfaces using modern JavaScript/TypeScript frameworks such as React, Angular, or Vue.
  • Develop APIs, services, and integration layers using technologies such as Python, Java/Spring Boot, Node.js, or comparable frameworks.
  • Translate product, customer, and engineering needs into working features with clear technical designs and maintainable code.

APIs, Data, and System Integration
  • Build and integrate RESTful APIs, microservices, and data-backed application components.
  • Work with relational and non-relational databases, search systems, object storage, and data services as required by the application architecture.
  • Support integrations with AI/ML workflows, document processing pipelines, metadata services, graph/data systems, or retrieval-based applications where applicable.
  • Understand how data flows through the application and help ensure that features are traceable, testable, and reliable.

Cloud, DevSecOps, and Delivery
  • Contribute to cloud-native application development using AWS, Azure, GCP, or secure government cloud environments as needed.
  • Work within CI/CD pipelines and support automated build, test, scan, deploy, and release processes.
  • Develop and maintain containerized applications using Docker and, where applicable, Kubernetes, Helm, or related deployment tooling.
  • Participate in secure software development practices, including dependency scanning, static analysis, container scanning, secrets handling, and vulnerability remediation.

Quality, Reliability, and Maintainability
  • Write unit, integration, and end-to-end tests appropriate to the application and deployment environment.
  • Debug issues across UI, API, database, infrastructure, security, and deployment layers.
  • Support operational visibility through logging, metrics, dashboards, runbooks, and practical troubleshooting documentation.
  • Refactor and improve existing codebases to reduce technical debt, improve security, and make systems easier to extend.

Collaboration and Technical Communication
  • Work closely with architects, data engineers, ML engineers, DevSecOps engineers, UI/UX contributors, and customer-facing team members.
  • Communicate tradeoffs clearly to technical and non-technical stakeholders.
  • Mentor junior developers and contribute to code review, design review, and engineering standards.
  • Document APIs, workflows, configuration decisions, and operational procedures for future maintenance.

Required Skills and Experience
  • Bachelor's degree in Computer Science, Engineering, or a related technical field from an ABET accredited university.
  • 7+ years of hands-on software engineering experience, with meaningful full stack development responsibility.
  • Strong proficiency in at least one back-end language such as Python, Java/Spring Boot, Node.js/TypeScript, or a comparable modern application stack.
  • Strong front-end development experience using React, Angular, Vue, or similar frameworks, with the ability to build usable, maintainable interfaces.
  • Experience designing, building, and consuming RESTful APIs and service-oriented or microservice-based architectures.
  • Practical database experience with SQL and/or NoSQL systems, including schema design, query patterns, integration, and performance considerations.
  • Experience working in Git-based development workflows with code review, branching, pull/merge requests, and release coordination.
  • Hands-on experience with automated testing, CI/CD pipelines, build tooling, and deployment processes.
  • Familiarity with containerized development and deployment using Docker; Kubernetes, Helm, or GitOps experience is a strong plus.
  • Ability to debug complex issues across application, data, infrastructure, security, and deployment boundaries.
  • Strong written and verbal communication skills, attention to detail, and ability to work effectively in a remote or hybrid cross-functional team.
  • Ability to meet deadlines and produce quality work.
  • Proficient in Microsoft Suite software including Outlook, Word, Excel, SharePoint, and PowerPoint.

Preferred Skills and Experience
  • Experience developing applications in secure government, DoD, FedRAMP, air-gapped, or compliance-driven environments.
  • Experience with AWS, Azure, or GCP application deployments, especially cloud-native applications and secure network architectures.
  • Experience with Infrastructure as Code, DevSecOps practices, vulnerability scanning, SBOM generation, dependency management, and secure release pipelines.
  • Experience integrating with AI/ML systems, intelligent document processing, RAG workflows, search systems, graph databases, or data-rich applications.
  • Experience with authentication and authorization patterns such as OIDC, SSO, RBAC, ABAC, mTLS, or API gateway/reverse-proxy integration.
  • Experience with observability tooling such as ELK/OpenSearch, Splunk, Grafana, Prometheus, CloudWatch, or similar platforms.
  • Experience mentoring junior engineers or helping establish practical engineering standards.

Clearance Requirements
Applicants selected will be subject to a security investigation and may need to meet eligibility requirements. Secret Clearance is required for continued employment.
Work Location: Reston, VA - Remote
  • Our company prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely.
  • If the position is remote or hybrid, you may periodically work from a Pantheon Data office location or client site.
  • If this position is assigned to a Pantheon Data office location or client site, you'll work with colleagues and clients in person, as needed for specific client requirements.

Interview Requirement: Candidates who are local to the area should be prepared to participate in an in-person interview as part of the selection process. Candidates outside the local area may be considered for a virtual interview.
Compensation
The salary range for this position is $145,000 - $200,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
Benefits Overview
We are always looking for good people! Pantheon Data is committed to providing its employees with competitive salaries and benefits in order to increase employee satisfaction and productivity. In addition to our benefits, we also offer SmartBenefits through the Washington Metro Area Transportation Authority, where you specify an amount of your pre-tax wages be paid directly to your SmarTrip account. In some cases, tuition assistance may be available for continuing education expenses and certifications related to their position. Additional details may be found at
Pantheon Data Important Information
All qualified applicants will be considered for employment without regard to disability, status as a protected veteran, or any other status protected by applicable federal, state, local, or international law.
As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.
If you require reasonable accommodation in completing this application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please direct your inquiries to our Talent Team at or by phone (571) 363-4020.
This company uses E-Verify to confirm each employee's work authorization. For more information, click here

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