Discipline in
Engineering.
Five Nines Consulting is a small, focused technology company building products and taking on engagements where engineering discipline makes a measurable difference. PromptSentry is the first product to come out of that work.
Small by Design
We're a small, focused team on purpose. Fewer projects at a higher standard, with direct access to the people doing the work.
Product First
We build technology products that solve real problems. PromptSentry is our flagship. Future products will share the same DNA.
The Five Nines Standard
Our name reflects the industry standard for high availability, 99.999% uptime. A commitment to reliability across everything we ship.
Our Mission
& Story
FNC was founded by Vasiliy Ivanov on the idea that the discipline of military service belongs in the engineering room.
Today FNC is a small, focused team building technology products, with a long-term commitment to bringing more disciplined operators into engineering as the company grows.
The Tech Side
Our first product, PromptSentry, is an AI security guardrail used by platforms protecting kids and enterprises protecting their workforce. It exists because AI adoption is moving faster than the guardrails meant to protect the people using it.
The Human Side
Alongside our product work, FNC is building the framework for a veteran training program. Designed to bring veterans into high-impact technical roles through mentorship and learn-by-doing, we expect a meaningful share of our future engineering to come from veterans we've trained.
Core Values
The operational principles that govern how we build products, serve our clients, and train the next generation of engineers.
Precision
Every product and every system we ship is engineered for uptime, integrity, and transparency.
Discipline
Military precision applied to engineering: clear specs, measurable outcomes, honest claims, and no shortcuts.
Purpose
No project is just a deliverable. It's part of a broader goal to protect users and create real paths forward for the people we work with.
Security
From AI safety at the product layer to zero-trust deployments, security is embedded by design, never bolted on.
What We Do
FNC builds technology products and delivers select consulting services across critical technical domains.
AI Security (PromptSentry)
A multi-stage AI security guardrail for educational and corporate AI applications. Built to protect against prompt injection, jailbreaks, and PII leaks.
Visit PromptSentryCloud & Cybersecurity
Dedicated consulting engagements in cloud architecture, infrastructure modernization, and defensive cybersecurity for select clients.
View Consulting Services
Vasiliy Ivanov
Builder, soldier, systems architect. After years in the Airborne and Special Operations, Vasiliy transitioned into technical infrastructure, and founded Five Nines Consulting to apply that same operational discipline to building technology products.
Today he leads PromptSentry, FNC's AI security platform, and is architecting the veteran training framework that will serve as the foundation for FNC's growth.
Read Full BioReady to Make an Impact?
Whether you're an enterprise looking to secure your AI, a government agency seeking a disciplined contractor, or a fellow builder wanting to join the mission, let's talk.