Senior Software Engineer, Mobile Security Analysis

Theori

Washington (Washington County)

Remote

USD 140,000 - 210,000

Full time

5 days ago

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Benefits offered by this job

Health insurance

Remote work (DC metro based)

Laptop + home office stipend

401(k) match

Job summary

Theori is seeking a Senior Software Engineer to advance AI-driven security analysis, focusing on mobile platforms and the Xint framework. The role emphasizes turning hands-on security research into automated systems, with opportunities to work on both commercial products and government-related research.

You will join a US-based engineering team, with a background in reverse engineering and a drive to ship robust, scalable tooling across Python and related technologies.

Qualifications

5+ years of professional software engineering experience building production systems.
Proficiency in Python.
Experience with reverse engineering tools (Binary Ninja, IDA Pro, or Ghidra).
Understanding of mobile platform internals (Android/iOS).
Knowledge of program analysis concepts (control flow, data flow, taint tracking).
U.S. citizenship.

Responsibilities

Design, develop, and maintain analysis capabilities powering Theori's AI security platforms.
Build static and binary analysis tooling in Python on top of reverse engineering frameworks.
Develop instrumentation and test infrastructure for evaluating applications on real devices.
Collaborate with security researchers to automate manual techniques.
Measure and improve analysis quality against real-world targets.
Write clean, tested Python code and document results.

Skills

Python

Reverse engineering

Mobile security

Software engineering

Tools

Binary Ninja

IDA Pro

Ghidra

Job description

Summary

We're looking for an experienced Senior Software Engineer to help build the next generation of AI-driven security analysis at Theori. You'll play a key role in designing and implementing analysis capabilities that power Xint, our autonomous penetration testing framework, with a focus on mobile applications.

This is a foundational role on our US engineering team, ideal for someone with a reverse engineering background who wants to turn hands-on security research into automated systems. The work spans commercial products and U.S. government research efforts.

Key Responsibilities

Design, develop, and maintain analysis capabilities that power Theori's AI security platforms.
Build static and binary analysis tooling in Python on top of established reverse engineering frameworks.
Develop instrumentation and test infrastructure for evaluating applications on real devices.
Work with security researchers to turn manual techniques into automated, repeatable analysis.
Measure and improve analysis quality against real-world targets.
Write clean, well-tested, and maintainable code in Python and related technologies.
Document and present technical results to customers and internal stakeholders.

Requirements

5+ years of professional software engineering experience building production systems.
Strong proficiency in Python.
Experience with reverse engineering tools such as Binary Ninja, IDA Pro, or Ghidra.
Solid understanding of mobile platform internals, Android, iOS, or both.
Familiarity with program analysis concepts such as control flow, data flow, and taint tracking.
Self-directed, ownership-oriented, and comfortable driving projects from design to deploymen
U.S. citizenship.
Based in, or willing to relocate to, the Washington, DC metro area. The role is remote day-to-day, with periodic on-site work at client facilities in the DC area.

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