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Software Development Tester Jobs in Washington (NOW HIRING)

Markon

Tester - Expert

Chantilly, VA

$150K - $190K/yr

Markon is seeking an experienced Tester - Expert to support mission-critical software development efforts for an Intelligence Community customer. The Tester will be responsible for developing and ...

Markon

Tester - Expert

Chantilly, VA · On-site

$150K - $190K/yr

Description Markon is seeking an experienced Tester - Expert to support mission-critical software development efforts for an Intelligence Community customer. The Tester will be responsible for ...

Markon

Senior Tester

Chantilly, VA

$130K - $160K/yr

Participate in formal and informal software reviews throughout the development lifecycle ... Experience testing applications developed using Java/J2EE. * Experience developing automated tests ...

Markon

Senior Tester

Chantilly, VA · On-site

$130K - $160K/yr

Participate in formal and informal software reviews throughout the development lifecycle ... Experience testing applications developed using Java/J2EE. * Experience developing automated tests ...

Sphinx Solutions, Inc.

Tester

Ashburn, VA · On-site

Participating in the team's Agile software development process and adhering to all reporting ... Demonstrated on-the-job experience testing web-based applications developed using technologies such ...

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Software Development Engineer in Test (SDET)

Zetier

Arlington, VA • On-site

Full-time

Re-posted 5 hours ago

Job description

Software Development Engineer in Test (SDET)
Zetier seeks Software Development Engineers in Test (SDET) to design, build, and maintain scalable automated testing capabilities for embedded hardware, cyber platforms, and operational software systems. This role focuses on developing robust test infrastructure, improving product reliability, and enabling continuous validation across hardware and software solutions. Candidates will develop automated validation frameworks, integrate testing into CI/CD pipelines, and support verification activities spanning low-level firmware, networking systems, and mission-driven software capabilities. Work includes functional, integration, regression, and hardware-in-the-loop testing aligned with quality, operational effectiveness, and compliance objectives.
Required:
  • 5+ years experience in software development or test engineering
  • Strong programming experience in Python, C/C++, and/or Rust
  • Experience deploying automated test frameworks (e.g. pytest, Robot)
  • Experience testing embedded or Linux-based systems platforms
  • Hands-on experience integrating testing into CI/CD pipelines
  • Familiar debugging complex HW/SW system interactions
  • Comfortable writing clear technical documentation (e.g. test reports)
  • Strong communication skills across engineering and customer teams
  • Active U.S. security clearance

Desired:
  • Experience with hardware-in-the-loop (HIL) and device automation
  • Experience testing embedded systems, networking devices, or mobile
  • Experience with containerization (e.g. Docker, Kubernetes, QEMU)
  • Familiar with network/protocol validation (e.g. Wireshark, Scapy)
  • Experience with RF or wireless systems (e.g. 802.11ac, Zigbee, SDR)
  • Experience testing firmware, drivers, and low-level code/services
  • Exposure to cybersecurity, vulnerability research, or pentest teams
  • Experience with observability, telemetry, or reliability engineering

Positions available in Arlington, VA.
Zetier is proud to be an Equal Opportunity Employer. We celebrate diversity and do not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other basis protected by law. All employment is decided on the basis of merit, qualifications, and business need.

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