Tessilon Technologies - Software security research for finance and AI

Reimagining software security, like never before

$2B+
Total Value Secured
50+
Audits Completed
0
Exploits Post-Audit
100%
Client Retention
Our Ethos

We don't work with every project. We work with the ones that matter: fintechs securing billions, AI systems that need to be right the first time.

We work with the most ambitious teams in pioneering software technologies and we own the outcomes. Every audit, every finding, every system we sign off on has our name on it.

One discipline: security. No distractions. We go deep, not wide. The best work comes from focus, conviction, and an unreasonable commitment to getting it right.

Software Security

We find what automated tools miss.

Our security practice is built on manual depth, adversarial thinking, and an obsession with getting it right before it goes live. We secure protocols that hold real money for real people.

Manual Code Review

Line-by-line expert analysis of smart contracts and protocol logic. Solidity, Rust, Move, Go - we read it all.

Red Teaming

Full-scope adversarial simulation. We think and act like attackers to break your system before someone else does.

White-Box Testing

Deep-access testing with full source code visibility. Formal verification, invariant testing, and threat modeling.

Incident Response

Real-time threat detection for live protocols. On-chain anomaly monitoring and rapid response when it matters most.

In-house AI

We build on top of Claude and GPT-5.5.

We don't train models from scratch; we make the best ones better. Our work lives in the harness and the inputs: the tooling, context, and scaffolding that turn frontier models into production systems.

Agent Harnesses

Custom agent loops, tool orchestration, and control flow that turn a single model call into a reliable multi-step system.

Context Engineering

Retrieval, prompt construction, and context management that feed models the right inputs at the right moment - and nothing else.

Smart Contracts

Battle-tested contracts on EVM and Solana for DeFi, tokenization, and governance. Optimized for gas, security, and upgradeability.

Infrastructure

L2 rollups, cross-chain bridges, and custom chain deployments purpose-built for high-throughput financial workloads.

The Team
Sujith Somraaj, Co-Founder and CEO of Tessilon Technologies

Sujith Somraaj

Co-Founder & CEO

Learn more →

One founder with deep expertise, amplified by the best AI.

No team of 50. No layers of management. Work that used to take entire teams weeks, delivered in days.

Claude
ChatGPT
Gemini
Start a software security research engagement with Tessilon
Work With Us

We choose who we build with. Then we go all the way.

Ready to start an engagement?

Whether you need a comprehensive security audit before launch or continuous coverage for a protocol that's already live, we're ready when you are.

Security Audits

Red Teaming

White-Box Testing

Incident Response

How We Work

Good systems outlive the people who built them. Here's how we make sure ours do.

01

Scope

We understand your system, your threat model, and what's at stake. Every engagement is scoped to your specific risk surface and business objectives.

02

Execute

Our founders go deep, augmented by AI. Manual review, adversarial testing, and exploit validation with continuous communication and full transparency.

03

Deliver

Detailed findings with severity classification, remediation guidance, and re-verification, so every issue is fixed and confirmed before launch.