Software Developer St. Louis, MO, US

CACI International Inc.; St. Louis, Northern (MO, KY); Hybrid; USD 90,000 - 190,000; Full time

Job summary

CACI International Inc. is seeking a Software Developer to design, develop, and deploy software for enterprise network monitoring and automation in a secure environment. You will build microservices, APIs, and data pipelines, and contribute to the full software lifecycle from requirements to deployment.

The role requires 6+ years of experience, TS/SCI with Polygraph, and proficiency in Python, Java, Go, or JS/TS, plus experience with Spring Boot, Django, REST, Docker, and cloud platforms.

Qualifications

• Active TS/SCI clearance with Polygraph.
• 6+ years of professional software development experience building enterprise applications.
• Strong programming proficiency in Python, Java, Go, or JavaScript/TypeScript.
• Experience with Spring Boot, Django, Flask, Node.js, or similar.
• Proficiency with Git and collaborative workflows.
• Experience building RESTful APIs and Swagger/OpenAPI.

Responsibilities

• Design and develop software applications in Python, Java, or Go.
• Write clean, maintainable code for automation frameworks.
• Develop microservices and backend systems for network telemetry data.
• Build data pipelines for real-time network analytics.
• Create web dashboards using React, Angular, or Vue.js.
• Implement RESTful APIs for tool integration.
• Write automated tests (unit/integration/e2e).
• Participate in Agile processes and CI/CD pipelines.
• Document code, APIs, and architectures.

Skills

Python

Java

Go

JavaScript/TypeScript

Spring Boot

Django

Flask

Node.js

Git

RESTful APIs

Education

IAT Level II certification (Security+ CE, CySA+, CCNA Security)

Tools

Docker

Kubernetes

Git

Swagger/OpenAPI

PostgreSQL

MySQL

MongoDB

Elasticsearch

AWS

Azure

GCP

Terraform

Ansible

Job description

Job Title: Software Developer

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

The Opportunity:

As a Software Developer on our Network Tools team, you'll design, develop, and deploy software applications that power enterprise network monitoring, analysis, and automation systems. You will write code to build custom tools, create API integrations, develop automation frameworks, and implement software solutions that enable network operations teams to manage complex infrastructure more efficiently. You will play a critical role in the software development lifecycle—from requirements gathering and design through coding, testing, deployment, and maintenance.

More About the Role:

We are seeking a talented Software Developer to build innovative software solutions for enterprise network monitoring and automation within a highly secure, classified environment. In this role, you will code applications that integrate with network monitoring platforms, develop microservices and APIs, create automated testing frameworks, and implement scalable software architectures. Your software will process network telemetry data, automate compliance workflows, and provide actionable insights to network operations teams.

Responsibilities:

• Design and develop software applications using Python, Java, or Go that integrate with network monitoring platforms (Forward Networks, NetScout, OTNA, Micro Focus NNMi) via REST APIs and SDKs.
• Write clean, maintainable code for automation frameworks that continuously audit, assess, and remediate DoD Security Technical Implementation Guide (STIG) compliance across network devices.
• Develop microservices and backend systems that consume network telemetry data, perform mathematical analysis of network behavior, and validate configurations against security policies.
• Build data processing pipelines that ingest packet capture data, traffic flows, and optical transport metrics to support real-time network analytics.
• Create web-based dashboards and visualization tools using modern frontend frameworks (React, Angular, or Vue.js) to display network health, compliance status, and performance metrics.
• Implement RESTful APIs and services that enable integration between network monitoring tools, identity management systems (Cisco ISE, Catalyst Center), and cryptographic device management platforms.
• Write automated test suites (unit, integration, and end-to-end tests) to ensure software quality and reliability.
• Participate in Agile development processes including sprint planning, daily standups, code reviews, and retrospectives
• Maintain CI/CD pipelines using tools like Jenkins, GitLab CI, or GitHub Actions to automate build, test, and deployment processes.
• Document code, APIs, and system architectures to support maintainability and knowledge transfer.

Qualifications:

Required:

• Active TS/SCI clearance with Polygraph.
• Experience: 6+ years of professional software development experience building enterprise applications.
• Active IAT Level II certification (e.g., Security+ CE, CySA+, CCNA Security) in compliance with DoD 8570/8140.
• Strong programming proficiency in one or more languages: Python, Java, Go, or JavaScript/TypeScript.
• Experience with modern software development frameworks such as Spring Boot, Django, Flask, Node.js, or similar.
• Proficiency with version control systems (Git) and collaborative development workflows (pull requests, code reviews, branching strategies).
• Experience building RESTful APIs and working with API documentation tools (Swagger/OpenAPI).
• Knowledge of database technologies including SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Elasticsearch) databases.
• Familiarity with containerization and orchestration using Docker and Kubernetes.
• Experience with cloud platforms (AWS, Azure, or GCP) and infrastructure-as-code tools (Terraform, Ansible).
• Understanding of software design patterns and object-oriented programming principles.
• Domain knowledge of network protocols (BGP, OSPF, MPLS, 802.1x) is a plus but not required—willingness to learn is essential.
• Experience developing software for network monitoring platforms (Forward Networks, NetScout, OTNA, NNMi) is highly desirable.
• Frontend development skills with React, Angular, or Vue.js for building user interfaces (desired).

What You Can Expect:

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$90,300-$189,600

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.