Senior Cyber Software Engineer

STR • Woburn, MA

2d

About The Position

The Defensive Cyber Technologies group at STR seeks a Senior Cyber Software Engineer to develop software and technical capabilities that improve the security and resiliency of critical national defense systems. The team hardens customer codebases, conducts cybersecurity assessments of operational software, and develops and applies cybersecurity tools to identify and remediate vulnerabilities before they affect mission-critical systems.

The role applies advanced software engineering principles to national security missions, assesses operational software and mission-critical systems, identifies and addresses vulnerabilities, and develops fuzzing campaigns and static and dynamic analysis tools. The engineer communicates technical findings, risks, and remediation recommendations to engineering and customer stakeholders.

The position requires an active Secret or Top Secret security clearance; U.S. citizenship is required by the U.S. Government. STR is a technology company conducting advanced research and development for defense, intelligence, and national security. Its work spans cyber, next-generation sensors and communications, electronic warfare, and artificial intelligence. STR describes its culture as collaborative and learning-oriented, focused on deep technical understanding and recognition of team members’ contributions.

Requirements

• Active Secret or Top Secret security clearance; U.S. citizenship is required by the U.S. Government.
• Bachelor’s degree in Computer Science or a related field and at least 5 years of relevant professional experience; an MS plus 3 years of experience or a PhD may be considered.
• Strong proficiency in C or C++ and ability to learn and work effectively in additional languages as needed.
• Strong systems programming foundation, including familiarity with OS internals, ABI/calling conventions, memory and process management, and assembly-level debugging.
• Experience with compiler and build toolchains such as LLVM/Clang, GCC, and CMake.

Nice To Haves

• Experience with dynamic analysis and fuzzing tools such as PIN, DynamoRio, and AFL++.
• Proficiency in Rust.
• Experience with container and virtualization technologies such as Docker and QEMU.
• Familiarity with reverse engineering and binary analysis using tools such as Ghidra, IDA Pro, Binary Ninja, or objdump.

Responsibilities

• Develop robust, resilient software solutions for national security missions using advanced software engineering principles.
• Perform comprehensive security assessments of operational software and mission-critical systems.
• Identify, validate, and remediate vulnerabilities.
• Design, build, and execute novel fuzzing campaigns to uncover security weaknesses.
• Develop static and dynamic analysis tools to detect, report, and remediate software vulnerabilities.
• Communicate technical findings, risks, and remediation recommendations to engineering and customer stakeholders.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior