Software Engineer 3 Tester (TS/SCI Clearance with Full Scope Polygraph Required)

J&T Business Consulting; Corridor North (MD); On-site; USD 183,000 - 218,000; Full time

Benefits offered by this job

Health, Dental, and Vision Insurance

Life and Disability Insurance

Paid Time Off and Holidays

401(k) Retirement Plan with Company M

Tuition Reimbursement for ongoing ed

Job summary

J&T Business Consulting seeks a senior Software Engineer 3 Tester to lead automated testing for high‑throughput C++ software in Annapolis Junction, MD. The role requires an active TS/SCI clearance with polygraph and hands‑on test development, plus CI/CD modernization and hardware/software integration with SDRs.

You will design and execute automated test suites, mentor teams, and ensure performance and interface compliance across lab servers and enterprise environments.

Qualifications

• Active TS/SCI clearance with Polygraph.
• Bachelor’s degree in Computer Science or related discipline plus 15+ years software engineering on similar scope; or 19 years without a degree.
• Strong proficiency in C++, Python, and Shell scripting.
• Experience in CI/CD modernization and automated testing frameworks.
• Familiarity with SDRs and enterprise test servers.
• Proven ability to lead software test efforts and enforce QA standards.

Responsibilities

• Architect, develop, and execute automated testing suites for complex C++ apps.
• Modernize CI/CD pipelines to support automated build and test workflows.
• Write test automation scripts in Python and Shell.
• Validate interfaces with SDRs and lab servers against specs.
• Lead testing efforts and quality assurance across multi‑functional teams.
• Collaborate with systems and hardware engineers on trade-offs and interfaces.
• Author and review comprehensive test procedures and reports.

Skills

C++

Python

Shell scripting

Education

Bachelor’s degree in Computer Science or related discipline

Tools

CI/CD pipelines

Automated testing frameworks

Job description

Software Engineer 3 Tester (TS/SCI Clearance with Full Scope Polygraph Required)

Annapolis Junction, United States | Posted on 11/05/2026

Clearance Requirement: Active TS/SCI with Polygraph

Salary Range: $183,000 – $218,000 / year (dependent on experience, education, and skill set)

About the Role

Seeking a senior Software Engineer 3 Tester with strong C++ and automated testing expertise to support complex, high-throughput software and test environments in Annapolis Junction, MD.

In this role, you will lead software test development, build automation, and continuous integration efforts across advanced test infrastructure. You will design, develop, and execute automated test suites for C++ software systems, modernize CI/CD pipelines to support continuous testing, and evaluate hardware/software interactions—including Software Defined Radios (SDRs) and enterprise server environments—to ensure software components strictly adhere to critical performance, timing, and interface specifications.

Key Responsibilities

• Architect, develop, and execute comprehensive automated testing suites and frameworks for complex C++ applications.
• Modernize and maintain CI/CD pipelines to integrate automated build processes and continuous testing workflows.
• Write robust test automation scripts and utilities using Python and Shell scripting.
• Validate software interfaces and integration points against physical test infrastructure, including Software Defined Radios (SDRs) and lab server environments.
• Analyze user and system requirements to derive detailed software design and performance testing criteria.
• Debug existing software codebases, isolate root causes of defects, and implement effective remediations.
• Serve as a technical lead across software development and test teams, overseeing quality control, code reviews, and testing standards.
• Confer with systems and hardware engineers to assess hardware/software trade-offs, interface constraints, and operational limitations.
• Author and review comprehensive test procedures, test outcome reports, and software design documentation.

Required Qualifications & Experience

• Security Clearance: Active TS/SCI with a current Polygraph.
• Bachelor’s degree in Computer Science or a related discipline from an accredited institution plus at least 15 years of software engineering experience on programs/contracts of similar scope and complexity, OR
• 19 years of relevant software engineering experience without a degree (4 additional years substituting for the degree).
• Core Languages & Scripting: Strong hands-on proficiency in C++, complemented by Python and Shell scripting capabilities.
• Test Engineering & DevOps: Demonstrated experience in CI/CD pipeline modernization and implementing automated continuous testing frameworks.
• Hardware & Infrastructure: Familiarity with test infrastructure hardware, including Software Defined Radios (SDRs) and enterprise test servers.
• Leadership & QA: Proven ability to lead software test efforts, establish software development process standards, and conduct quality assurance across multi-functional engineering teams.

Benefits & Compensation

• Comprehensive Health, Dental, and Vision Insurance
• Basic Life and Disability Insurance
• Paid Time Off (PTO) and Paid Holidays
• 401(k) Retirement Plan with Company Match
• Tuition Reimbursement for ongoing education and professional development

An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected under federal, state, or local law.