Full-Stack Developer, Mid-SR - TS/SCI $150K-$230K +15% at Millennial Software Solutions Inc — Herndon, USA | Base Career

Full Job Posting

About Millennial Software: Millennial Software is revolutionizing the landscape of security and defense by leveraging our core competencies in software development, automation, DevSecOps, and machine learning.

We are an employee-owned company, every employee receives equity in the company
100% company-paid medical, dental, and vision premiums for you and all dependents
Ability to get increased salary if you don't need medical/dental/vision
100% company-paid disability and life insurance benefits
15% 401(k) company contribution
30 days of PTO/holidays
Generous training budget
Paid Paternal and Maternal Leave
Business development / growth incentives
Top notch company swag

Job Description: Millennial Software is seeking a Full-Stack Developer to join our team.

You will design, develop, integrate, test, and maintain software applications and services supporting Object-Based Intelligence (OBI) mission requirements, enterprise ontologies, and knowledge graph capabilities.

Our ideal candidate is an experienced Software Engineer who can develop scalable, secure, and high-performance applications while working across modern software development and DevSecOps environments.

You will work closely with ontology engineers, database engineers, data scientists, analysts, and Government stakeholders to translate mission requirements into effective software solutions.

This role will support semantic data integration, knowledge management, advanced analytics, and AI/ML capabilities through the development of APIs, microservices, and applications that integrate enterprise data sources and knowledge graph technologies.

Essential Functions

Design, develop, test, deploy, and maintain software applications and microservices supporting mission requirements.
Develop APIs and backend services that integrate with enterprise ontologies, knowledge graphs, semantic databases, and object-management systems.
Implement software solutions utilizing Semantic Web technologies, including RDF, OWL, SPARQL, and graph-based data models.
Collaborate with technical teams and Government stakeholders to translate mission requirements into scalable and maintainable software solutions.

Must be a U.S. Citizen
Active TS/SCI clearance
Must be able to successfully obtain and maintain a CI Polygraph
17+ years of relevant experience with a Bachelor’s Degree or 12+ years of relevant experience with a Graduate Degree
Demonstrated experience designing, developing, and maintaining enterprise software applications using modern programming languages such as Java, Python, or C#
Experience developing RESTful APIs, microservices, and distributed applications
Experience integrating applications with relational databases, graph databases, or semantic data platforms
Experience with containerization technologies such as Docker and Kubernetes/OpenShift
Familiarity with Agile software development methodologies, DevSecOps practices, and CI/CD pipelines
Experience with version control systems such as Git
Ability to communicate complex technical concepts effectively to technical and non-technical stakeholders

Nice to have:

Experience supporting Object-Based Intelligence, Intelligence Community, or Department of Defense mission systems
Experience developing applications utilizing Semantic Web technologies, including RDF, OWL, SPARQL, knowledge graphs, or graph databases
Experience integrating AI/ML services, large language models (LLMs), or advanced analytics into enterprise applications
Experience with cloud-native application development using AWS, Azure, or Red Hat OpenShift
Experience implementing secure software development practices in accordance with Government cybersecurity requirements
Experience with event-driven architectures, message brokers, and enterprise integration frameworks
Relevant software engineering or cybersecurity certifications, such as AWS Certified Developer, Azure Developer Associate, Red Hat Certified Specialist, Security+, or equivalent
Experience providing technical leadership, mentoring, and knowledge transfer to Government personnel or multidisciplinary teams

Millennial Software Solutions Inc. is an Equal Opportunity Employer and does not discriminate in employment on the basis of race, color, religion, sex, national origin, political affiliation, sexual orientation, gender identity, marital status, disability and genetic information, age, membership in an employee organization, or other non-merit factor.

Full-Stack Developer, Mid-SR - TS/SCI $150K-$230K +15%

Job Fit Check

Full Job Posting

Essential Functions

Apply for this job in 1 click

More jobs at Millennial Software Solutions Inc

Millennial Software Solutions Inc - Junior-Mid Backend Software Engineer, TS/SCI with CI Poly - $95K-$180K + 15% 401k

Millennial Software Solutions Inc - Junior-Mid Scientist SDA, TS/SCI with CI Poly - $95K - $180K + 15% 401k

Millennial Software Solutions Inc - Senior Backend Software Engineer, TS/SCI with CI Poly - $180K-$210K + 15% 401k

Millennial Software Solutions Inc - Senior Scientist SDA, TS/SCI with CI Poly - $180K-$210K + 15% 401k

Full-Stack Developer - Mid-Senior, TS/SCI with CI Poly - $150K-$200K + 15% 401k

DevOps Engineer - Mid-SR, TS/SCI with FSP - $150K-$200K + 15% 401k

UI/UX Developer, Jr-Mid - TS/SCI $95K-$140K + 15% 401k

Database Engineer, Mid-SR - $140K-$210K + 15% 401k