Senior Software Engineer, Mobile Security Analysis

Theori

Washington +1 more

Hybrid

Who this role is best for

Reverse engineering experts with Python proficiency will find this foundational role in AI-driven security analysis ideal, especially those interested in government research and collaborative engineering environments.

Best fit for

Candidates with reverse engineering experience and a desire to transition into AI-driven automation
— “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.”
Individuals with strong mobile platform internals knowledge and a knack for building tools
— “Solid understanding of mobile platform internals, Android, iOS, or both.”

Things to consider

U.S. citizenship is required, which may limit eligibility for non-citizens
— “U.S. citizenship.”
Periodic on-site work at client facilities in the DC area is expected despite remote flexibility
— “remote day-to-day, with periodic on-site work at client facilities in the DC area.”

How to stand out

Highlight projects where you automated manual security processes using Python
— “Work with security researchers to turn manual techniques into automated, repeatable analysis.”
Showcase your experience with reverse engineering frameworks like Binary Ninja or Ghidra
— “Experience with reverse engineering tools such as Binary Ninja, IDA Pro, or Ghidra.”
Emphasize your ability to document and present technical results effectively
— “Document and present technical results to customers and internal stakeholders.”

Pace · SteadyCollaboration · MediumAutonomy · HighDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

AI-driven security analysis
autonomous penetration testing framework
reverse engineering tooling
binary analysis
instrumentation and test infrastructure

Typical background

5+ years of professional software engineering experiencePython proficiencyreverse engineering tools

Skills & requirements

Required

PythonReverse EngineeringMobile Platform InternalsBinary AnalysisStatic AnalysisDynamic AnalysisControl FlowData FlowTaint TrackingInstrumentationTest InfrastructureAutomated AnalysisClean CodeTestingDocumentationPresentationU.S. Citizenship

Preferred

Dynamic Instrumentation ToolsVulnerability ResearchFuzzingAi/llm-driven WorkflowsGovernment-funded Research ProgramsCTF ExperienceTs/sci Clearance

Stack & domain

PythonReverse EngineeringBinary NinjaIDA ProGhidraAndroidIosControl FlowData FlowTaint TrackingDynamic InstrumentationFridaVulnerability ResearchFuzzingAi/llm-driven WorkflowsGovernment-funded Research ProgramsCTFProblem-solvingTeamworkCommunicationLeadershipMobile Security

About the role

Original posting from Theori via Ashby

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.
NICE TO HAVE
Experience with dynamic instrumentation tools such as Frida.
Background in vulnerability research, including published CVEs.
Experience with fuzzing.
Familiarity with AI/LLM-driven workflows.
Prior work on government-funded research programs.
CTF experience.
Active TS/SCI clearance.
WHAT WE OFFER
Compensation & Benefits
Competitive salary + equity
Health, dental, and vision insurance
Generous PTO policy
Remote work (DC metro based)[2] [3]
Laptop + home office stipend
401(k) match
Team Culture
Ship features that matter
Modern Python-based stack
Strong focus on testing and quality
Clear documentation and processes
Collaborative, low-ego team
Career growth and mentorship
Work-Life Balance
Flexible hours, remote-first[4] cultureremote with occasional client-site days
No on-call rotations or weekend deployments
Focus on outcomes, not hours
WHY JOIN THEORI?
Cutting-edge product: AI-driven security tools that protect real systems
Smart team: Collaborate with world-class engineers and security researchers
Growth stage: Join early and help define the culture of our North American team
Real impact: Shape how AI transforms cybersecurity
HIRING PROCESS
30-min intro call with hiring manager
60-min technical interview
Offer

Source: Theori careers (Ashby)