Demonic Binary / Capability Statement
Software engineering, security testing and production repair.
Native Mobile · Offensive Security · Backend & Cloud · AI Agents
California-based
Worldwide remote, hybrid and client-requested onsite delivery by agreement
What we do
Demonic Binary is a founder-led, security-first engineering firm with employees and independent contractors. We scope, implement, assess and harden mobile, web, desktop, backend, platform and AI systems—from a bounded MVP to changes inside complex production environments. Work is evaluated against the actual system, necessary specialist capacity and authorized delivery conditions.
Technical capabilities
Scoped engineering and security work can include malware and threat research, mobile application security, network and infrastructure assessment and verified remediation, subject to scope, approved evidence handling and qualified specialist availability.
Native mobile engineering
Swift, SwiftUI, Kotlin, Jetpack Compose, app architecture, identity, device trust and release recovery.
Adversarial and product security
Authorized reviews, threat modeling, API authorization, secure code remediation and scoped red-team assessments.
Web, desktop and native systems
Web and SaaS products, macOS/Windows/Linux applications, Rust/C++ components, secure packaging and release integration.
Backend, cloud and Python
Distributed APIs, Python services and automation, identity, cloud infrastructure, tenant boundaries, CI/CD and observability.
Applied AI and agent systems
Model and retrieval integrations, tool-using and voice agents, backend actions, evaluations and human handoff.
QA, modernization and recovery
Automated web, mobile, desktop and API regression testing; inherited-codebase rescue, incident fixes and verified handoff.
Engagement approach
Begin with a technical assessment, a scoped build/modernization effort, or a production recovery engagement. Agree the technical owner, authorized access, success criteria, review process, deliverables, exclusions, fees, schedule, security and handoff in writing. Quotes are prepared after technical discovery and accepted only through agreed written terms.
Evidence available for review
- First-party operational work: Repairing a Cloudflare Worker canonical-URL redirect loop
- Internal demonstrator: SiteGuard Monitor: service-health and alerting demonstrator
- Experience-based architecture overview: Mobile and backend workflows across multiple operational sites
Our current technical write-ups and labs are linked above. Client references will be added with permission.
Procurement and operating boundaries
Contracting details, insurance documentation, required qualifications, specialist staffing and support arrangements are confirmed during vendor review. Government opportunities require the applicable registrations and clearances. Please use an approved private channel for restricted project information.
Technical lead
Jeffrey Monica · Founder & engineering lead
info@demonicbinary.com · +1 (650) 397-1782
https://demonicbinary.com
Next step
Send a non-sensitive description of the system, risks, intended outcome and procurement requirements. Request a scoped proposal before granting access.