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# Software Engineer Principal

- **Company:** Science Applications International Corporation
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Salary:** $120,001.0 - $160,000.0
- **Contract:** Permanent contract
- **Skills:** LangGraph Framework, HTML, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, Component-Based Software Engineering, Business Logic, Cascading Style Sheets (CSS), Cloud Computing, CompTIA Security+, Software Debugging, Python (Programming Language), Node.Js, Performance Tuning, Cloud Services, Service Design, Service Development Studio, Software Engineering, Systems Architecture, Web Applications, Workflow Management Systems, LangChain, ReactJS, Multi-Agent Systems, Infrastructure as Code (IaC), Backend, Agentic-AI, LangSmith, Infrastructure Automation Frameworks, Information Technology, Front End Software Development, Restful APIs, Amazon Simple Queue Service (SQS), Terraform, Devsecops, OpenSearch
- **Published:** October 16, 2026
- **Apply:** https://www.juju.com/job/1_saic2-2618018

## About the Role

Collaborate with AI/ML engineers, architects, and product owners to translate requirements into scalable, production-ready solutions + Support testing, debugging, and performance optimization of platform components + Maintain documentation for system architecture, APIs, and development processes + Provide feedback and mentoring to junior developers **Qualifications** **Required Qualifications** + Bachelor's degree in Computer Science, Software Engineering, or a related field and 9 years of experience or a Masters and 7 years of experience + **Pass CompTIA Security Plus Examination within 270 Days of Employment** + **Must be a U.S. Citizen, no-dual citizenship** + **Candidates must have the ability to get a Secret Security clearance** + Experience building front-end web applications using core web technologies: HTML, CSS, and JavaScript + Experience developing backend services and APIs, including RESTful service design and complex business logic implementation, using
languages such as Python, Java, or NodeJS + Strong problem-solving skills and ability to work effectively in a fast-paced, collaborative agile environment **Preferred Qualifications** + Front-End Development: Experience with HTML, CSS, JavaScript, and ReactJS for building modern, component-based web applications.
Ability to effectively style and design front-end applications for usability and visual consistency + Backend & AI Development: Python development experience, particularly for backend service development.
Hands-on experience with Agentic AI frameworks such as LangChain, LangGraph, and/or LangSmith.
Familiarity with multi-agent orchestration, autonomous workflow design, or LLM integration patterns + Cloud & Infrastructure: Experience with AWS cloud services, including one or more of the following: OpenSearch, SageMaker, Lambda, SQS + Experience with Infrastructure as Code (IaC) tools, including: Terraform, Packer, Terragrunt + Familiarity with DevSecOps practices Target salary range: $120,001 - $160,000.

## Description

You will work across the full development stack - from crafting intuitive front-end user experiences to building robust backend services and cloud infrastructure components. **This opportunity can be worked remotely anywhere within the United States for the right candidate.** **Responsibilities** + Design, develop, and maintain front-end web applications using modern web technologies. + Build and style responsive, ensuring a polished and effective user experience. + Develop and maintain backend REST services and business logic to support platform capabilities and agentic AI workflows. + Contribute to the development of agentic AI components, including integration with frameworks such as LangChain, LangGraph, and LangSmith. + Support development and deployment of cloud-based services and infrastructure on AWS, leveraging tools such as OpenSearch, SageMaker, Lambda, and SQS. + Develop and maintain Infrastructure as Code (IaC) using tools such as Terraform, Packer, and Terragrunt. +