Working as a Cryptography Engineer responsible for software implementation of cryptographic primitives.

• Supporting research by providing implementation of cryptographic schemes related to the usage of post-quantum cryptography in MLS protocol. Work has been accepted by two main cryptologic conferences - Asiacrypt2020 and PKC2021.
• As a developer and team leader, I’ve successfully implemented of quantum-resistant VPN for the first customer of the company (Bosch) on theirs ARMv8-based embedded platform.

Working as a Cryptography Engineer in Cloudflare’s Technology Research team. Most of the activities were around implementing improvements to the TLS stack as well as the implementation of Proof of Concepts in the area of post-quantum cryptography (isogeny based).

• Together with Google I’ve implemented and put into production an update to TLS stack enabling post-quantum key exchange (SIKE). Results from this experimentation can be found at the company’s website
• I’ve co-authored Golang cryptographic library called CIRCL (github).

I was part of the team working on an implementation of the Trusted Execution Environment (TEE) based on ARM TrustZone technology. My responsibility was the implementation of cryptographic components and security validation of various parts of the system.

• Provided implementation of cryptographic API. This work was a part of the bigger project with a goal to implement TEE compliant with the GlobalPlatform specification (certificate).
• Provided Trusted Execution Environment (TEE) based system authentication for Android devices (Gatekeeper). This work has is deployed on millions of Android devices (i.e. Samsung).

I provide various services in the area of software engineering.

Responsible for maintaining and implementing various functionalities in the Amadeus core system security and communication framework (C++ based). Focusing mainly on security and stability of TLS connections, performance optimization, improvements to failure resilience of high-availability components.

• PCI DSS certification - provided modifications to TLS connections to align usage of cryptographic algorithms with the PCI requirements.
• Improved performance in a backend performing low-latency operations by modifying memory allocation strategy. Overall CPU consumption was reduced by ~20%, which reduced running costs as the backend was composed of a few hundred processes distributed over a server farm.

Managing teams developing PC software tools for Nokia/Symbian based mobile phones. Products were used in Nokia’s customer care centres for device reparation as well as end-users for firmware update. I’ve built a team of 20 developers and testers located in Poland, the Czech Republic and China working on multiple software projects for Nokia.

C/C++ software developer. Member of a team that was developing diagnostic and recovery toolset for embedded, Qualcomm based mobile phone platform. Those tools were used for the design of the mobile phone platform by the BenQ/Siemens research centres.