Software Engineer Principal

SAIC; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

SAIC's Solutions & Technology Group seeks a Principal Level Software Developer to design, build, and deploy an advanced Agentic AI Platform. You will work across the full stack, delivering modern web interfaces and robust backend services, while shaping cloud infrastructure on AWS and IaC pipelines.

Collaborate with AI/ML engineers, architects, and product owners to translate requirements into scalable, production-ready solutions, mentor junior developers, and ensure security and quality across

Qualifications

• Bachelor's degree in Computer Science or Software Engineering plus 9 years of experience or a Master's with 7 years of experience.
• Must pass CompTIA Security+ within 270 days of employment.
• U.S. Citizen, no dual citizenship; ability to obtain Secret clearance.
• Experience building front-end apps with HTML, CSS, and JavaScript.
• Experience developing backend services and APIs with Python, Java, or NodeJS.
• Strong problem-solving and collaborative agile skills.

Responsibilities

• Design, develop, and maintain front-end web applications with modern web tech.
• Build responsive UIs and polished user experiences.
• Develop backend REST services and business logic for platform capabilities.
• Contribute to agentic AI components and integration with LangChain/LangGraph/LangSmith.
• Support cloud-based services on AWS using OpenSearch, SageMaker, Lambda, SQS.
• Create and maintain IaC with Terraform, Packer, Terragrunt.
• Collaborate with AI/ML engineers, architects, and product owners.
• Assist testing, debugging, performance tuning, and documentation.
• Mentor junior developers and promote secure coding practices.

Skills

HTML

CSS

JavaScript

Python

Java

NodeJS

ReactJS

LangChain

LangGraph

LangSmith

AWS

OpenSearch

SageMaker

Terraform

Packer

Terragrunt

DevSecOps

Education

Bachelor's degree in Computer Science or Software Engineering

Master's degree in Computer Science or related field

Tools

OpenSearch

SageMaker

Lambda

SQS

Terraform

Packer

Terragrunt

LangChain

LangGraph

LangSmith

Job description

About SAIC

Science Applications International Corporation (SAIC) is a premier technology integrator delivering solutions across defense, space, civilian, and intelligence markets. Our Solutions & Technology Group (STG) is at the forefront of developing cutting-edge AI-driven capabilities that empower mission-critical operations.

Position Overview

SAIC's STG is seeking a talented and motivated Principal Level Software Developer to join our growing team focused on the design, development, and deployment of a next-generation Agentic AI Platform. In this role, you will contribute to building intelligent, autonomous agent frameworks and modern web applications that support complex decision‑making workflows. 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.
• 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

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