Jr Software Engineer

Twenty80 LLC; Columbia (SC); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Twenty80 LLC is seeking a cybersecurity engineer to join a mission-focused team working at the intersection of software engineering, reverse engineering, vulnerability research, and cloud technologies. You will analyze complex software systems, identify critical weaknesses, and develop cloud-native solutions that support advanced cyber operations.

The role emphasizes low-level software understanding, vulnerability discovery, and operational cloud deployments using modern DevSecOps practices and

Qualifications

• Experience with C/C++/Python or Assembly in a software engineering role.
• Hands-on reverse engineering using tools like Ghidra, IDA Pro, Binary Ninja, or GDB.
• Proven vulnerability research experience identifying zero-day vulnerabilities, logic flaws, and memory corruption.
• Experience designing or deploying cloud-native solutions in AWS/Azure/GCP/Kubernetes.

Skills

C/C++/Python

Reverse engineering

Vulnerability research

Cloud-native environments

Tools

Ghidra

IDA Pro

Binary Ninja

GDB

AWS

Azure

GCP

Kubernetes

Job description

Security Clearance Required: Active TS/SCI with Full Scope Polygraph (FSP)

Join a team developing advanced cybersecurity capabilities to solve complex technical challenges. In this role, you'll work at the intersection of software engineering, reverse engineering, vulnerability research, and cloud technologies. You'll analyze complex software systems, identify critical vulnerabilities, and develop cloud-native solutions that support advanced cyber operations.

If you're passionate about understanding how software works at a low level, uncovering security flaws, and building impactful technical solutions, this opportunity offers the chance to work on challenging, mission-focused projects.

Required Qualifications

• Strong software engineering experience with C, C++, Python, or Assembly.
• Hands‑on experience with reverse engineering using tools such as Ghidra, IDA Pro, Binary Ninja, or GDB.
• Proven experience in vulnerability research, including identifying zero‑day vulnerabilities, logic flaws, memory corruption issues, and other security weaknesses.
• Experience designing, developing, or deploying solutions in cloud‑native environments such as AWS, Azure, GCP, or Kubernetes.

Preferred Qualifications

• Experience supporting operational cybersecurity or incident response activities.
• Strong understanding of operating system internals (Windows, Linux, iOS, or Android), kernel‑level debugging, and computer architecture.
• Experience with modern DevSecOps practices, including CI/CD pipelines, Docker, containerization, and automated testing frameworks.