Title: AI-powered secure smartphone & personal security platform | Technical Co-founder / CTO (mobile security + AI) | Full-time, all-in
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I’m K, the founder of Cryptheim.
The idea started from a simple observation: people with a high security profile still rely on a completely fragmented stack.
One app for encrypted messaging. Another solution for identity. Another for crypto or sensitive credentials. Separate threat-intelligence feeds. Google Maps for navigation. A security company when something becomes physical.
None of these systems really understand the complete situation.
I want to build Cryptheim to change that.
What Cryptheim is
Cryptheim is an AI-powered personal security platform built around a hardened smartphone.
The long-term product combines:
a cryptographically secured smartphone
hardened Android/AOSP-based operating environment
hardware-backed encryption and secure elements
mechanical privacy / kill switches where technically feasible
end-to-end encrypted messaging, calls, video and files
cryptographically verified identity
secure storage for credentials and digital assets
policy-based transaction/signing controls
real-time cyber and geopolitical threat intelligence
OSINT and commercial/private intelligence sources
AI-powered personal risk analysis
risk-aware navigation
travel security
emergency assistance and human escalation
an enterprise command platform for security teams
The phone is important, but Cryptheim is not just a phone company.
The device becomes the trusted endpoint through which we can connect:
device → identity → communications → assets → location → intelligence → risk → response
Imagine travelling to an important meeting.
Instead of simply telling you that protests are occurring somewhere in the city, Cryptheim could understand that the incident is close to your planned route, that your destination is inside an elevated-risk area and that your device has simultaneously connected to a suspicious network.
It could then recommend another route, increase the device security posture, protect sensitive operations and — if necessary — connect you or your organisation with human security support.
That is the product I want to build.
Who I’m looking for
I’m looking for a technical co-founder / CTO, not an agency, freelancer or someone who only wants to advise from the sidelines.
Someone who wants to help turn the concept into the actual company.
Ideally you are strong in several of these areas:
Android / AOSP / mobile systems
mobile or endpoint security
applied cryptography
secure communications
backend / distributed systems
AI/ML engineering
threat-intelligence pipelines
privacy-preserving architecture
device attestation / secure elements / hardware security
infrastructure and cloud security
You do not need to know everything on that list.
What matters more is that you can think like a systems architect, know where you need specialists, and are comfortable making difficult security-versus-product trade-offs.
What I do not want to do
I don’t want us to make claims like “unhackable phone” or pretend we can reinvent an entire mobile operating system, manufacture proprietary hardware, build an intelligence company and create a global protection network on day one.
The first version should be much more disciplined.
My current thinking is:
Phase 1: hardened AOSP/reference hardware + secure communications + identity + intelligence MVP
Phase 2: integrated Cryptheim reference device + Command platform + enterprise pilots
Phase 3: certification, production hardware and broader security services
The architecture should assume that components can fail or be compromised and use compartmentalisation, zero-trust principles, hardware-backed trust and minimal data collection to limit the blast radius.
Current stage
Cryptheim is currently at the concept / company formation stage.
I am working on the product vision, market positioning, business model, funding strategy and early company architecture.
The founding technical team will be formed as part of this stage.
I’m not going to pretend that we already have customers, revenue or a finished device when we don’t.
The next objective is to turn the vision into:
a credible technical architecture
an integrated MVP
a reference-device prototype
design-partner conversations
initial enterprise pilots
a security and certification roadmap
I’m planning a founding/pre-seed round to finance that transition rather than trying to raise a huge hardware round before we have proven anything.
Why I'm looking for a co-founder instead of hiring a CTO
Because the technical architecture is the company.
Security cannot be outsourced as an implementation detail.
The person making decisions about the operating environment, cryptographic boundaries, identity model, intelligence architecture, telemetry, AI, privacy and hardware trust should have founder-level ownership.
I’m looking for someone who wants to sit on the same side of the table and build this for years.
Not someone waiting for a Jira ticket.
The bigger vision
If we execute this correctly, Cryptheim could eventually sit between a high-risk person or organisation and the threats around them.
Not only:
“Your communication is encrypted.”
But:
“We understand the changing risk around you, protect the systems and assets you depend on, and help you decide what to do next.”
That combination of secure endpoint + encrypted communications + intelligence + AI + navigation + response is the company thesis.
If you are a senior technical builder who finds mobile security, cryptography, intelligence systems and ambitious hardware/software products genuinely interesting, I’d like to talk.
Full-time / all-in co-founder role.
DM me with a little about yourself, what you’ve built, which part of this problem interests you most, and — importantly — what you think is wrong with the idea.
I’d much rather meet someone who challenges the architecture than someone who simply tells me it sounds great.