Josef Sevcik

Developed the SIP softswitch platform, including test tools and test cases. Did testing and troubleshooting.

Implemented an IMS and push-to-talk client to a mobile phone firmware (Siemens 65 line and later).

Designed and implemented a platform that collects usage data and performs checks for regulatory compliances, tariff conditions, and rates the subscriber usage.

Created applications for the IPTV platform during a pre-sale project.

Integrated a resource admission and control platform for a telecom network. Designed and implemented necessary changes to the platform.

Leading the research and development of a decentralized, blockchain-based digital content marketplace. Performed initial research, and co-created novel cryptographic protocol, including two zero-knowledge proofs. Implementing proofs of concept (C++, Python). Led the delivery of the MVP, used as a base for fundraising.

After successful fundraising, participated in the growth phase as lead architect/product owner. Built the geographically distributed team of around 12 people and set agile development processes and tools. Closely cooperated with management in defining and prioritizing features and delivering the back-end part of the solution in a very tight timeframe. Lead developer (contributing approx. 20kLOC) Successfully delivered the blockchain back end and APIs (C++11/14). SPoC for all technical matters.

Responsible for the design and development of the DLT B2B solution. Built the team from scratch, established agile development processes and tools, and acted as technical product owner, creating the product in cooperation with business, prioritizing the product backlog, and managing releases in order to maximize the value delivered with the given resources. Led all development efforts, including API and SDK (JS/Java/.NET) design and supervising implementation, creation of various tools, and consultation with internal stakeholders and prospective customers.

Contract role for a startup in the media and advertising area, aiming to introduce a new decentralized application for targeted content promotion. Provided advisory regarding feasibility and architecture of the DApp. Developed the DApp’s smart contract and back end.

Contributed to a high-frequency derivates trading platform. Extended the current functionality to trade contracts of the same product code with different delivery dates, improved the codebase to remove some existing technical debt, and performed extensive performance profiling and optimization, among other initiatives.

An NFT marketplace, operating both over ERC1155 and ERC721, with both custodian mode and A fully smart-contract-based back end. The implementation allows a high level of customization of the workflows and was implemented both as A customer project and as a base for digital asset exchange, an NFT-based IoT stream monetization platform.
The platform utilizes a unique decentralized identities document and verifiable credentials technology to store metadata.

A platform integrated with a marketplace to monetize and process data streams, particularly IoT data.
It is built on top of an NFT marketplace, an IoT hub, and Kafka. As a unique feature, it allows the implementation of serverless data processing functions that can be bound to the data streams, process them, and provide results via API or send them back as a new stream to the DAE.