SUMMARY

•Experienced blockchain developer with hands-on experience in Golang, Rust and Solidity.

•Worked as an interoperability engineer and developed several Cosmos modules and gateway smart contracts on different types of chains including Polygon, Cosmos and zkSync in recent years.

•Also have a deep understanding of several clouding platforms and DevOps frameworks for the design and management of the system.

WORK EXPERIENCE

Blockchain Developer

Blockdaemon

09/2021 – 07/2023 Los Angeles, CA, US

•Architected a general-purpose stateful bridge which offers a platform for crosschain yield aggregator, crosschain lending protocol and crosschain NFT marketplaces.

•Analyzed all well-known bridging protocols in the blockchain industry and brought about a new system which combines trustless and trusted components.

•Developed inbound, outbound and attestation modules based on Cosmos SDK and introduced a state machine system to debug and manage the system effectively.

•Taken part in audits of several Cross-Chain dApp contracts on Ethereum, including Concentrated Liquidity and on-chain limit orders.

•Architected and led the development of an advanced verifiable claim processing system to optimize fundraising processes on crypto exchanges by aggregation and selective disclosure of cryptographic claims.

Blockchain Developer

Topl

10/2017 – 08/2021 Houston, TX, US

•Researched Ethereum scaling solutions including payment channels and state channels with underlying theory of Conflict-free replicated data types (CRDTs).

•Coordinated development and developed a blockchain-backed international lottery platform infrastructure

•Architected and led development of a blockchain platform based on Tendermint and Cosmos SDK with native KYC/AML support to be used in government applications.

•Interacted with multiple stakeholders in the process of analysing and defining business use cases.

•Implemented various transaction cost optimizations utilizing game theory principles. Kevin Gene Hatfield

Senior Blockchain Developer

adz3by@r.postjobfree.com +1-413-***-**** Farmersville, TX, United States https://www.linkedin.com/in/kevin-hatfield-dev/

Full Stack Developer

DartPoints

10/2013 – 09/2017 Dallas, TX, US

•Created several web services using PHP (Laravel), Python (Django), Node.js, React.js, and Vue.js to enable communications with other trading desk applications via REST, SOAP, JSON, and custom XML messages.

•Worked on an Agile (Scrum) development team to deliver regular updates to the business team and project managers.

•Implemented designing web pages using HTML5, CSS3, JavaScript, Boostrap, SASS, LESS, React.js, Redux, Flex, and MongoDB.

•Wrote a framework to generate new custom websites with a custom database backend for improved rollout and prototyping.

•Developed custom websites and CMS platforms using PHP, MySQL, and JavaScript, and implemented and maintained the user-facing part of the system using PHP (Laravel) and Python

(Django) for the back end and a custom-made JavaScript framework for the front end. EDUCATION

Bachelor's Degree in Computer Science

Lamar University

09/2009 – 07/2013 TX, US

SKILLS

Languages

Golang, Rust, Solidity, Javascript, Typescript, C/C++, Python Frameworks

Hardhat, Web3.js, React/Redux, Node.js/Django, Express, REST API/GraphQL, jQuery, Socket.IO, RabbitMQ, Kafka

Storage

MySQL, Redis, Memcached, MongoDB, Cassandra

Blockchain

Cosmos SDK, Substrate, CosmWasm, Ethereum, Polkadot, Blockchain Platforms, Hyperledger Composer, Hyperledger Fabric, Hyperledger, Distributed Ledgers, Consensus Algorithms DevOps

Docker, Grafana, Jenkins, Openstack, Kubernetes, Prometheus, Github Actions, ArgoCD, Crossplane, Ansible, Terraform, Amazon Web Service(AWS), Google Cloud Platform(GCP)

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