3 days ago
Base Salary
$131k - $237k/yr
Responsibilities
- Own the technical design, code quality, system health, maintenance, troubleshooting, and operational support of active web applications.
- Transition existing internal tools and core applications into the supported ecosystem through straightforward, direct migrations.
- Architect and build new features and greenfield applications using React.js, Node.js, Python, PostgreSQL, and FastAPI.
- Optimize Python backend scripts, scale Node.js services, and design high-performance APIs.
- Support chat interfaces, RAG concepts, intelligent application components, workflows, and data pipelines.
- Establish and maintain foundational repositories, boilerplates, and clean coding standards.
- Conduct code reviews, establish testing strategies, and mentor a mid-level developer.
- Document, configure, test, and fix software throughout the release lifecycle.
Requirements
- Active TS/SCI with Polygraph is required.
- A BS degree with 12–15 years of relevant experience, or a master’s degree with 10–13 years of relevant experience, is required; a technical doctorate may also qualify.
- Strong production experience with JavaScript/TypeScript ecosystems, React.js, and Node.js is required.
- Strong Python experience for backend services, background jobs, or data-processing pipelines is required.
- Deep knowledge of robust RESTful API development, particularly with FastAPI, is required.
- Strong PostgreSQL and relational database experience, including schema design, indexing, joins, and query optimization, is required.
- Ability to read and understand legacy C#/.NET structures is required; ongoing C# development is not required.
- Deep familiarity with Git and CI/CD concepts is required.
- Preferred qualifications include experience with Agile environments, conversational or chat interfaces, vector databases, RAG architectures, Docker, container security, or image hardening.
- Candidates should be effective in small, autonomous teams and focused on pragmatic delivery and innovation.
Tech Stack
Categories
About Leidos
Leidos builds and operates technology and engineering solutions for defense, intelligence, civil, and health agencies, including systems integration, cyber, enterprise IT, sensors, and healthcare IT. It primarily sells through government contracts and long-term programs, plus managed services and mission software. Founded in 1969 and headquartered in Reston, Virginia, Leidos is a Fortune 500 public company on the NYSE; customers include U.S. defense and intelligence agencies and civil bodies such as the FAA.