Full Stack Developer

M9 Solutions is dedicated to providing IT services and solutions to the Federal Government by mobilizing the right people, skills, clearance levels, and technologies to help organizations who desire improved performance and modern, sustainable change. M9 has provided quality IT services and support to more than 30 Federal Agencies and multiple commercial customers nationwide. Our capabilities include digital transformation, software development, cloud migration, applications & infrastructure, cybersecurity, data delivery & analytics, and IT talent solutions.

M9 Solutions is seeking a Full Stack Developer to work on-site for a client located in Ashburn, VA. An active Public Trust clearance is required.

Responsibilities

• Design, build, and maintain scalable full-stack applications using Next.js, React, NestJS, and MongoDB.


• Integrate and optimize AI-based features, including RAG pipelines and LLM-powered tools.


• Develop and tune prompt templates, retrieval chains, and embeddings for contextual AI performance.


• Collaborate with product managers, designers, and data scientists to translate requirements into technical solutions.


• Implement secure APIs, efficient data models, and robust backend services.


• Ensure application performance, security, and reliability across deployments.


• Participate in code reviews, testing, and CI/CD pipelines.


• Stay up to date with modern frameworks, AI integration patterns, and best practices in full-stack engineering.

Required Skills and Qualifications

• Active Public Trust clearance.


• 3–5 years of experience as a Full Stack Engineer or similar role.


• Strong proficiency in JavaScript/TypeScript, React, Next.js, NestJS, and MongoDB.


• Experience building and deploying RAG-based AI systems (e.g., integrating vector databases, embedding models, or LLM APIs).


• Familiarity with prompt engineering techniques for optimizing AI outputs.


• Strong understanding of RESTful and GraphQL API design.


• Experience with version control (Git), containerization (Docker), and cloud platforms (AWS, GCP, or Azure).

Preferred Skills and Qualifications

• Familiarity with LangChain, LlamaIndex, or similar frameworks for AI application development.


• Experience with vector databases (e.g., Pinecone, Weaviate, Milvus).


• Knowledge of CI/CD pipelines and DevOps practices.


• Experience working in Agile/Scrum teams.

Full-Time Employee Compensation

• M9 Solutions’ pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include, but are not limited to, responsibilities of the position, education, experience, knowledge, skills, abilities, as well as internal equity, location, alignment with market data, applicable bargaining agreement (if any), or other law.


• M9 Benefits -

Salary Range

$60,000 - $180,000 USD

M9 Solutions, LLC (M9) is a Federal contractor and we comply with all applicable federal laws prohibiting discrimination in employment, including Title VII of the Civil Rights Act of 1964. We also adhere to the affirmative action requirements of the Vietnam Era Veterans' Readjustment Assistance Act (VEVRAA) and Section 503 of the Rehabilitation Act, ensuring equal opportunity for veterans and individuals with disabilities. Please click here to complete M9's Voluntary Self-Identification Form and then email it to [email protected] . If you need accommodation during the application process or encounter difficulties using our website, please contact our Human Resources Department at [email protected] or 703-936-0880 .

With 14+ years of proven delivery and steady growth, M9 Solutions is a unique small business with credible past performance and key capabilities offering project management services, solution architects, business analysts, program managers, technical architects, and technical consultants. M9 was recognized as an Inc. 5000 Fastest-Growing Private Companies in 2021, 2020, 2019, 2018, 2017, 2016, and 2012. M9 Solutions believes that work should be fun, rewarding, and something everyone can be excited about. We offer a competitive compensation package and value diversity in driving the vision of the company.