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# Test Engineer

- **Company:** CareerCircle
- **Location:** Alexandria, VA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $73,450.0 - $132,775.0
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, Application Performance Management, Systems Engineering, Confluence, Automation of Tests, Microsoft Azure, Behavior-Driven Development, Bug Tracking Systems, Software Bug Management, Cloud Computing, Configuration Management, Code Generation, Software Quality, Signals Intelligence, CompTIA Security+, Continuous Delivery, Continuous Integration, Software Debugging, DevOps, Programming Tools, Distributed Systems, Event-Driven Programming, Data Flow Control, Geospatial Intelligence, Github, Graphical User Interface, Apache JMeter, Junit, Python (Programming Language), Key Management, Scrum Methodology, Regression Testing, Reliability Engineering, Data Driven Tests, Selenium, Service Virtualization, Software Engineering, Software Systems, Software Testing Automation Framework, Data Streaming, Test Case, Test Management, Scripting, Computer Network Operations, Performance Testing, Test-Driven Development (TDD), Postman, Gatling, HybridCloud, Gitlab, Event Driven Architecture, Build Management, Pytest, Containerization, Gitlab-ci, Integration Tests, Kubernetes, Infrastructure Automation Frameworks, Information Technology, Playwright, Data Analytics, Data Management, Software Performance, Devsecops, Api Management, Docker, Katalon Studio, Jenkins, Microservices
- **Published:** October 3, 2026
- **Apply:** https://www.careercircle.com/jobs/all/all/usa/md/gaithersburg/c67e4a48-0591-4578-bf32-d55c4948aaaa

## About the Role

Junit
Gitlab
Github
Newman
Jenkins
Dataflow
Aviation
Equities
Debugging
Scripting
Automation
Kubernetes
SAFe Agile
Testability
Market Data
API Testing
Quality Gate
REST Assured
Communication
Investigation
Microservices
Test Planning
ANSYS Meshing
Apache JMeter
Responsible AI
Test Automation
Code Generation
Defect Tracking
Test Management
Computer Science
Scenario Testing
Test Engineering
Security Testing
Contract Testing
Agile Methodology
Docker (Software)
Programming Tools
Chaos Engineering
Workflow Management
Root Cause Analysis
Systems Engineering
Integration Testing
Selenium (Software)
Performance Testing
Data-Driven Testing
Software Engineering
Postman API Platform
Test Data Management
Engineering Practices
Hybrid Cloud Computing
Air Traffic Management
Service Virtualization
Education and Training
Event-Driven Programming
Software Quality (SQA/SQC)
Java (Programming Language)
Behavior-Driven Development
Python (Programming Language)
Test-Driven Development (TDD)
JavaScript (Programming Language)
Application Programming Interface (API), * Bachelor's degree in Computer Science, Software Engineering, or related discipline with 3+ years of experience, or Master's degree with 2+ years (additional experience, education and training may be considered in lieu of degree)

 * Experience with test automation frameworks (Selenium, JUnit, pytest, or equivalent) and Java or JavaScript test development
 * Experience integrating automated testing into CI/CD pipelines using Jenkins, GitLab CI, GitHub Actions, or similar tools
 * Experience with performance, integration, and API testing for distributed systems using tools such as JMeter or Gatling
 * Knowledge of distributed service testing, including service virtualization, contract testing, chaos engineering, and data-driven test automation
 * Experience with operational scenario-based testing, behavioral validation, root cause analysis, and defect investigation
 * Familiarity with Agile/SAFe testing, quality engineering principles, test management, and defect tracking tools
 * Ability to obtain and maintain a Public Trust
 * U.S. citizenship required
 * Successful completion of background investigations as required by the government customer

Preferred / Desired Qualifications:

 * Python scripting and test development proficiency

 * Experience testing microservices and event-driven architectures

 * Knowledge of containerized test environments (Docker, Kubernetes)

 * Experience with API testing frameworks (REST Assured, Postman/Newman)

 * Familiarity with security testing tools and practices

 * Experience in aviation, defense, or safety-critical testing domains

 * Knowledge of test-driven development (TDD) and behavior-driven development (BDD)

 * Experience with AI-assisted development tools (e.g., code generation, automated testing, intelligent debugging)

 * Experience testing legacy-to-modern migration verifying functional equivalence between old and new systems

Why Leidos?

You'll work on systems where performance, precision, and reliability matter - every second. This is not experimental AI for prototypes. This is disciplined, responsible AI applied to mission-critical software that supports national infrastructure.

If you're excited by solving complex problems in regulated, real-world environments - and using AI as a force multiplier rather than a shortcut - we'd like to talk., DevOps
Github
Jenkins
Planning
Equities
Test Case
Automation
Innovation
Purchasing
User Story
Upskilling
SAFe Agile
Scalability
Reliability
Market Data
Cryptography
Key Management
Katalon Studio
Test Automation
Ancient History
Test Engineering
Agile Methodology
Analytical Method
Regression Testing
Amazon Web Services
Selenium (Software)
Continuous Delivery
Performance Testing
Time Off Management
Security Engineering
Software Development
Atlassian Confluence
Signals Intelligence
Continuous Integration
Education and Training
Configuration Management
Graphical User Interface
Agile Software Development
Software Quality (SQA/SQC)
Java (Programming Language)
Computer Network Operations
Scrum (Software Development)
Software Performance Testing
Python (Programming Language)
Software Development Life Cycle
Top Secret-Sensitive Compartmented Information (TS/SCI Clearance)
+0

Google IT Automation with Python

Google Project Management

## Description

Leidos is seeking a Test Engineer to join the Air Traffic Business Area within the Homeland Sector, supporting the development of the Leidos Common Automation Platform (L-CAP). L-CAP is a mission-critical, future-ready automation platform built on a hybrid cloud data mesh architecture, enabling next-generation air traffic management capabilities. We are building with an AI-first engineering mindset, embracing emerging AI capabilities and modern development practices to accelerate delivery, improve software quality, and continuously evolve how we design and build mission-critical systems. This role operates within a SAFe/Agile framework as part of an Agile Release Train (ART) delivering iterative value across the program. This position supports government programs and requires the ability to obtain and maintain a favorable Public Trust investigation.

This is a hybrid position requiring 3 days onsite and 2 days working from home, if you are located within a commutable distance (Less than 1 hour's drive one-way during normal traffic) from Gaithersburg, MD; Eagan, MN; or Egg Harbor Township, NJ. However, if you do not reside within a commutable distance, you may be considered for a 100% remote role.

What You'll Do

 * Design and implement test automation frameworks for microservices-based platform components

 * Build and maintain reusable test libraries and utilities for the L-CAP test infrastructure

 * Integrate automated tests into CI/CD pipelines ensuring continuous quality gates

 * Conduct performance testing to validate system behavior under load and stress conditions

 * Execute integration testing across platform services, APIs, and external system interfaces

 * Develop test plans and strategies aligned with sprint and PI objectives

 * Analyze defect patterns and test metrics to identify quality trends and improvement opportunities

 * Collaborate with development and systems engineering teams on testability and quality requirements

 * Support test environment configuration and test data management activities

 * Mentor junior test engineers on automation practices and testing methodologies

 * Design and execute test scenarios based on operational ATC workflows ensuring modernized services replicate legacy system behavior

 * Develop distributed service validation frameworks verifying inter-service communication, data flow, and performance under operational conditions

 * Implement data-driven verification approaches supporting modernization of legacy automation functions

 * Embrace an AI-first engineering culture by actively adopting AI-assisted development tools, automation, and modern engineering practices that improve productivity, code quality, and delivery velocity., CI/CD
Gitlab
Jenkins
Planning
Equities
Scripting
DevSecOps
Pipelines
Automation
Innovation
Reliability
Market Data
API Testing
Azure DevOps
Apache JMeter
Prioritization
Test Automation
Microsoft Azure
Ancient History
Computer Science
Software Testing
Test Engineering
Agile Methodology
Docker (Software)
Quality Assurance
CompTIA Security+
Defect Management
Cloud Technologies
Software Solutions
Amazon Web Services
Continuous Delivery
Performance Testing
Scripting Languages
Software Engineering
Software Development
Postman API Platform
Information Technology
Continuous Integration
Geospatial Intelligence
Containerized Application
Agile Software Development
Scrum (Software Development)
Playwright (Software Testing)
Continuous Improvement Process
Software Development Life Cycle
JavaScript (Programming Language)
Application Performance Management
Certified Software Test Engineer (CSTE)
Top Secret-Sensitive Compartmented Information (TS/SCI Clearance)
International Software Testing Qualifications Board (ISTQB) Certified
+0

Google IT Automation with Python