Systems Software Engineer
- Compensation
- Not disclosed
- Location
- Washington, DC, US
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Contract
- Experience
- 10+ years
- Category
- Software engineering
- Posted
Skills
Must have
- Active TS/SCI clearance with the ability to obtain a CI Polygraph.
- Bachelor's degree in Computer Science, Engineering, Information Technology, Mathematics, or a related quantitative discipline.
- Typically 10 years of professional software engineering experience.
- Previous Intelligence Community experience.
- Hands-on systems programming experience with C, C++, or Rust.
- Experience with operating-system interfaces, process management, concurrency, and multithreaded applications.
- Experience analyzing database internals, network protocols, or low-level software behavior.
- Strong SQL, relational database, and graph database knowledge.
- Experience with cloud infrastructure, automation, and identity integration using OIDC.
- Knowledge of Zero Trust Architecture and enterprise security controls.
- Experience with Agile, DevOps, or DevSecOps methodologies.
- Agile Developer or Certified Scrum Developer certification.
- CompTIA Security+ or higher cybersecurity certification.
Nice to have
- Master's degree in a related technical discipline.
- Experience with PostgreSQL, Neo4j, and database engine internals.
- Terraform, Ansible, AWS GovCloud, Kubernetes, or Red Hat OpenShift.
- Experience with PingFederate, Keycloak, SailPoint, Okta, or similar identity platforms.
- Experience with PKI, cryptographic integrations, Hardware Security Modules, or PKCS #11.
- Familiarity with Trusted Data Format, Protocol Buffers, and modern cryptographic technologies.
Full description
REQUIRES AN ACTIVE/EXISTING TS/SCI WITH CI POLYGRAPH
DAn Solutions is seeking experienced Systems Software Engineers with strong systems programming and database engineering backgrounds to support a mission-critical federal government program.
This position focuses on understanding and modifying how database engines and core software services operate internally. The ideal candidate is comfortable analyzing source code, examining network communications, tracing application behavior, and developing secure, scalable solutions across integrated technology environments.
Key Responsibilities
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Develop, test, maintain, and deploy software using C, C++, Rust, Go, Java, Python, or Node.js.
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Develop concurrent and multithreaded applications using systems programming principles.
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Analyze database engine source code, communication protocols, serialization formats, and packet structures.
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Design and troubleshoot networked applications using sockets and client-server architectures.
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Develop relational and graph database solutions, including SQL optimization and performance tuning.
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Support technologies such as PostgreSQL, Redis, Neo4j, Amazon S3, and Elasticsearch.
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Modernize existing services and develop Infrastructure as Code (IaC).
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Deploy and troubleshoot cloud-hosted applications and supporting infrastructure.
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Integrate identity services using OpenID Connect (OIDC), authentication, authorization, and Zero Trust principles.
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Maintain technical documentation, software designs, and operational procedures.
Required Qualifications
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Active TS/SCI clearance with the ability to obtain a CI Polygraph.
-
Bachelor's degree in Computer Science, Engineering, Information Technology, Mathematics, or a related quantitative discipline.
-
Typically 10 years of professional software engineering experience.
-
Previous Intelligence Community experience.
-
Hands-on systems programming experience with C, C++, or Rust.
-
Experience with operating-system interfaces, process management, concurrency, and multithreaded applications.
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Experience analyzing database internals, network protocols, or low-level software behavior.