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

J&T Business Consulting; Maryland; On-site; USD 131,000 - 218,000; Full time

Benefits offered by this job

Health, Dental, Vision Insurance

Life and Disability Insurance

Paid Time Off and Holidays

401(k) Retirement Plan with Company 
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Tuition Reimbursement

Job summary

J&T Business Consulting is seeking a senior Software Engineer 3 Tester in Annapolis Junction, MD to lead automated testing for complex C++ software and high-throughput test environments.

You will modernize CI/CD pipelines, build robust Python/Shell test scripts, and oversee QA across multi-functional teams, coordinating with hardware engineers on SDRs and enterprise servers to meet strict performance and interface specs. Active TS/SCI with Polygraph is required.

Qualifications

• Bachelor’s degree in Computer Science or related field with at least 15 years of software engineering experience on programs of similar scope and complexity, OR 19 years of relevant software engineering experience without a degree.
• Strong hands-on proficiency in C++, with Python and Shell scripting capabilities.
• Demonstrated experience modernizing CI/CD pipelines and implementing automated continuous testing frameworks.

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 hardware test environments including SDRs and lab servers.
• Analyze requirements to derive detailed software design and performance testing criteria.
• Debug existing code, identify root causes, and implement effective remediations.
• Lead software test efforts and oversee QA across multi-functional teams.

Skills

C++ proficiency

Python

Shell scripting

Education

Bachelor’s degree in Computer Science or related field

19 years of relevant software engineering experience (no degree)

Tools

CI/CD pipelines

Test automation frameworks

Job description

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

Annapolis Junction, United States | Posted on 10/16/2026

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.
• Experience & Education:
  • 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.