Quantum Research International, Inc

SOFTWARE DEVELOPER/ENGINEER (CYBER)

Aerospace & Defense
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Active TS or ability to obtain TS/SCI clearance
  • 3+ years of software development experience
  • Strong skills in .NET/C#, Go, and Python
  • Familiarity with AI/ML concepts, including embeddings and RAG patterns
  • Experience building RESTful APIs and backend systems
  • Knowledge of non-frontier AI models running locally

Responsibilities

  • Design and maintain RAG pipelines with vector databases and LLMs
  • Optimize retrieval logic and post-process LLM outputs
  • Build backend services using .NET/C#, Go, and/or Python
  • Collaborate with teams to create production-grade features
  • Ensure compliance with security and performance standards
  • Troubleshoot AI workflows for latency and accuracy issues
  • Participate in coding, testing, and documentation processes

Benefits

  • Opportunity to work on government contract projects
  • Exposure to cutting-edge AI/ML technologies
  • Collaborative environment with AI/ML experts
  • Potential for personal and professional growth
  • Engagement in Agile development practices
Full Job Description
Quantum Research Int. is seeking an Intermediate Software Developer/Engineer to support the development and enhancement of a Retrieval-Augmented Generation (RAG) application that leverages Large Language Models (LLMs) for intelligent inference and response generation. This is a government contract role focused on building secure, reliable AI-assisted systems. The ideal candidate has strong software engineering skills across multiple languages and a solid understanding of AI/ML concepts, with hands-on interest in applied LLM technologies.

Job Responsibilities:

  • Design, develop, and maintain RAG pipelines integrating vector databases, embeddings, and LLMs for accurate, context-aware inference.
  • Implement and optimize retrieval logic, prompt engineering, and post-processing of LLM outputs.
  • Build and integrate backend services using .NET/C#, Go, and/or Python.
  • Collaborate with AI/ML engineers, data scientists, and stakeholders to translate requirements into production-grade features
  • Ensure application security, performance, scalability, and compliance with government standards.
  • Troubleshoot and optimize AI-assisted workflows, including latency, accuracy, and cost considerations.
  • Participate in code reviews, testing, and documentation in an Agile environment.


Required Skills\ Qualifications:

  • Active TS or ability to obtain TS/SCI clearance
  • At least 3+ years of professional software development experience
  • Strong experience in at least two of the following: .NET/C#, Go (Golang), Python. Solid understanding of all languages listed is a plus.
  • Familiarity at the developer level with AI/ML fundamentals, including embeddings and vector searching, RAG patterns, LLM inference (prompting, context windows, token management), and basic evaluation metrics for generative AI.
  • Experience building RESTful APIs, microservices, or backend systems.
  • Experience with non-frontier (open) AI models running in local or self-hosted environments.


Desired Skills and Qualifications:

  • Direct experience developing and deploying AI-assisted applications (chatbots, knowledge assistants, document intelligence tools)
  • Hands-on work with RAG frameworks/tools such as LangChain, LlamaIndex or similar.
  • Experience implementing vector databases such as Pinecone, Weaviate, Chroma, pgvector, etc.
  • Familarity with Python data/AI ecosystem (NumPy, Pandas, Hugging Face, sentence-transformers)
  • Knowledge of .NET integrations with AI services or Go-based backend services for high-performance AI workloads
  • Experience developing in secure/controlled environments (FedRAMP, gov-cloud, air-gapped enclaves).
  • Understanding of MLOps basics (model versioning, monitoring, CI/CD for AI).


#LI-JL1 #LI-Onsite

About Quantum Research International, Inc

Quantum Research International, Inc. provides engineering, software development, and cybersecurity services to the U.S. Department of Defense and other government agencies. The company offers services in the areas of missile defense, space operations, intelligence, surveillance, and reconnaissance. Quantum Research International also provides software engineering, modeling and simulation, and systems engineering services. The company was founded in 1987 and is headquartered in Huntsville, AL.
Learn more about Quantum Research International, Inc
Size
1,000 employees
Industry
Net Income
$10 million
Founded
1987
5 Year Trend
+20%
Revenue
$100 million

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