Zachary Petersen

I am a highly experienced Senior Blockchain Engineer with a strong background in developing high-performance smart contracts and decentralized applications.

PROFESSIONAL EXPERIENCE 

Self Employed 

Title Job: Senior Blockchain Developer (Rust, Move, Scrypto, Cosmwasm) 

Duration: Jan 2024 – present Mission, KS, USA

Details:

•Crafted and optimized secure, high-performance smart contracts in Rust for the Solana blockchain, focusing on scalability and minimizing transaction fees. 

•Developed decentralized applications (dApps) on Polkadot, utilizing Rust's WebAssembly capabilities to achieve seamless cross-chain interoperability. 

•Built and deployed Cosmos SDK modules with Cosmwasm, facilitating the creation of custom sovereign blockchains tailored to specific needs. 

•Participated in the development of a decentralized exchange on the Injective network, employing Cosmwasm to design secure and efficient trading contracts. 

•Engineered smart contracts for the Sui and Aptos networks using the Move programming language, ensuring robust security and parallel execution capabilities.

•Collaborated with the Cardano developer community to create and audit smart contracts using the Plutus platform and the Haskell-based Marlowe domain-specific language. 

•Performed code reviews, unit testing, and security audits to guarantee the reliability and robustness of blockchain applications. 

Job Title: Senior Blockchain Developer (Solidity/Rust, React/Next/Figma, Vue/Nuxt, Web3/Wagmi) 

Company: Consensys

Duration: Jan 2024 – present Mission, KS, USA

Duration: Jan 2019 – Dec 2023 Fort Worth, Texas, USA

Details:

•Developed and optimized secure, high-performance smart contracts using Solidity and Rust for the Ethereum and Solana blockchains, focusing on scalability and minimizing transaction fees. 

•Implemented decentralized applications (dApps) on Ethereum and Polkadot, leveraging Rust's WebAssembly capabilities for cross-chain interoperability. 

•Deployed and audited smart contracts for NFT projects, ensuring security and compliance with industry standards. 

•Wrote and tested smart contracts using Hardhat and Truffle, integrating them seamlessly with frontend applications using Wagmi and Web3.js.

•Customized and forked existing secure smart contracts, implementing trending methods like yield farming and building bridges between networks. 

•Crafted engaging and responsive user interfaces using Figma, React, Next.js, Vue.js, and Nuxt.js, ensuring seamless navigation and visually appealing designs. 

•Engineered robust backend systems using Node.js, Express, PHP, and Laravel to support scalable and efficient web applications. 

•Implemented feature-rich server-side applications with Python, Django, C#, and ASP.NET, focusing on performance and functionality. 

•Pioneered the integration of cutting-edge blockchain technologies, such as Solidity, Rust, C/C++, and Web3.js/Wagmi, to develop decentralized applications that redefine user experiences. 

•Navigated the dynamic landscape of Ethereum, Binance Smart Chain (BSC), Solana, and Tron blockchain platforms, leveraging their unique capabilities to drive innovation and scalability. 

•Built reusable, responsive pages on frontend frameworks like Angular, React with Tailwind CSS, Headless UI, and other tools to create visually appealing and user-friendly interfaces. 

•Utilized AWS Lambda functions to perform data processing tasks, such as image resizing and product indexing for search functionality. 

•Integrated JEST with continuous integration (CI) pipelines to automate test execution and provide immediate feedback on code changes. 

•Created custom test scripts using JavaScript and Cypress APIs to simulate user interactions and validate expected behaviors. 

Job Title: Software Engineer (Java, Spring, Angular, CI/CD, React) 

Company: Cerner Corporation

Duration: Aug 2014 – Dec 2018 Kansas City, Missouri, USA

•Developed RESTful APIs using Spring Boot and deployed to AWS: Cerner frequently uses Spring Boot for backend services in their healthcare applications. 

•Developed healthcare management software: Cerner specializes in healthcare management systems, making your experience in developing patient data management applications highly relevant. 

•E-commerce website development using Spring, ASP.NET, React, and Vue: Cerner's software often includes complex user interfaces and secure transaction processing, aligning with your experience in building ecommerce platforms.

•Frontend development using Angular, React with Tailwind CSS, Headless UI: Cerner uses various frontend technologies to create userfriendly and responsive interfaces for their healthcare solutions. •Utilized AWS Lambda functions for data processing: Cerner uses cloudbased solutions, including AWS, for scalable and efficient data processing. 

•Integrated JEST with CI pipelines: Continuous integration and automated testing are standard practices at Cerner to ensure high-quality software delivery. 

•Custom test scripts using JavaScript and Cypress APIs: Cerner places a strong emphasis on automated testing and quality assurance. 

•Utilized Git for version control: Source code management with Git is a common practice at Cerner. •Agile environment collaboration: Cerner operates in an Agile development environment, ensuring effective collaboration among team members. 

•Developed and maintained Java-based web applications using Spring and Hibernate, integrating Spring Security for authentication and authorization in Java applications.

Title job: Backend Developer (Java, Golang, Python, Restful API, Kafka, JUnit) 

Company: Full Scale

 Duration: Jun 2012 – Jul 2014 Kansas City, Kansas, USA 

Details: 

•Enhanced the functionality and error handling capabilities of existing Golang Restful API using the Gin Framework. 

•Developed a Java-based patient scheduling application using Spring Boot that integrated with an existing HIS (Health Information System) system via REST APIs, improving clinic workflow and reducing wait times by 30%. •Skilled in utilizing Golang drivers to execute operations such as CRUD and complex queries with PostgreSQL, MySQL, MongoDB, and Redis. •Developed and trained deep learning models using frameworks like TensorFlow or PyTorch, applying techniques such as convolutional neural networks (CNNs) and recurrent neural networks (RNNs) for image recognition. •Created a web application using Django and Flask, implementing MVC architecture and using DRF for authentication and authorization. •Implemented unit and integrated tests on multiple Java web applications' backend using JUnit and Mockito. PROFILE Full-Stack Developer with extensive hands-on experience in developing cutting-edge blockchain solutions and infrastructure for various enterprises. Skilled in blockchain technology, adept at creating flawless designs, and deploying scalable, maintainable components that meet specific requirements. Proven track record of leading the complete software development lifecycle, from thorough analysis and design to smooth execution and continuous maintenance, all within Agile methodologies. With in-depth expertise in DevOps and a team-oriented approach, ready to utilize skills in a new role to drive the success of innovative projects. 

EDUCATION 

University: Wichita State University 

Duration: Apr 2010 – Apr 2014 Wichita, KS, USA

Bachelor of Computer Science Studying at Wichita State University was a transformative experience for me. It challenged me intellectually and helped me grow both personally and professionally. The university's rigorous curriculum provided me with a strong foundation in my field of study, and the practical aspects of my education allowed me to apply what I learned in real-world situations. Engaging with a diverse community of students and faculty members broadened my horizons and improved my interpersonal skills. Earning my degree from such a reputable institution has given me confidence and prepared me for the job market. Overall, my time at Wichita State University was invaluable in shaping me into a well-rounded individual ready for success in my career.