Allan – Rust, Golang, C

An Estonian cleantech startup building a data-driven platform that tokenizes nature into digital assets for climate action. It enables landowners to generate revenue from carbon and biodiversity credits instead of extracting raw materials.

• Architected and implemented the blockchain and tokenization layer, enabling automated minting and trading of Solana (SPL) and Ethereum (ERC20/ERC721) tokens based on landowner carbon capture and biodiversity data;
• Designed and developed custom token and NFT smart contracts for Solana (Rust) and Ethereum (Solidity);
• Implemented low-level Solana and Ethereum clients in C++ for interacting with blockchain networks;
• Deployed blockchain client infrastructure on Entrust nShield HSMs using PKCS11/nCore APIs to support secure custodial key management;
• Designed and built a custodial wallet system leveraging tamper-proof HSM Secure Execution Environments;
• Developed backend services in Golang to orchestrate token minting, trading workflows, and blockchain integrations;
• Worked extensively with low-level cryptography to ensure transparent, secure token issuance and custody.

An Estonian deep-tech firm developing passive electro-optical and AI/ML-powered counter-UAV (drone detection, classification, and targeting) systems for security and defence applications

• General architecture and design of the detection system;
• Visual detection of moving objects;
• Visual tracking of tagged objects (PyTorch);
• Visual object classification (YOLO, etc.);
• High precision real-time embedded gimbal driver for aiming;
• Machine learning for the PID loop parameters for the gimbals.

An Estonian software company behind a leading anti-detect browser solution. The platform enables users and businesses to manage multiple isolated browser profiles with unique fingerprints to avoid detection and account blocking in web automation, marketing, and multi-account workflows.

• Analyzed browser fingerprinting methods and technologies to reduce software and hardware fingerprint leakage;
• Designed and implemented custom features for Chromium and Firefox across Windows, macOS, and Linux;
• Worked directly with large, multi-million–line browser codebases in mixed environments (C/C++, Rust, Objective-C, Python, JavaScript, Java);
• Built automated browser tests using Puppeteer and Selenium to validate functionality and fingerprinting behavior;
• Implemented browser automation and convenience features to improve product usability;
• Contributed to the design and development of supporting backend services when needed (Java, Spring Boot, MySQL).

An Estonian-founded deep-tech company specializing in hash-based cryptography and blockchain technologies (notably its KSI blockchain) to provide tamper-evident data integrity and security solutions for governments and enterprises worldwide.

• Designed and implemented a new blockchain (KSI) infrastructure from scratch using C/C++;
• Authored formal specifications and led core implementation of blockchain components;
• Researched and implemented efficient methods for signing log entries using Rust, Scala, and C++;
• Built log-signing integration (ls-ksi12) for RSyslog in C;
• Investigated scalable blockchain algorithms and architectures;
• Contributed to multiple cryptography and cybersecurity research projects.