Senior Cyber Software Engineer

STR • Woburn, MA

3d • $138,000 - $190,000

About The Position

The Defensive Cyber Technologies group at STR is seeking 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 remediates vulnerabilities, and develops fuzzing and static and dynamic analysis capabilities. The engineer communicates technical findings, risks, and remediation recommendations to engineering and customer stakeholders.

Requirements

• Active Secret or Top Secret security clearance; U.S. citizenship is required by the U.S. Government for the clearance.
• Bachelor's degree in Computer Science or a related field and a minimum of 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

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

What This Job Offers

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