harzojunior

Smart Contract Development: Created and deployed smart contracts, such as ERC-20 tokens and staking contracts, based on business requirements. Deployment & Upgrades: Managed smart contract deployments and upgrades, using OpenZeppelin Defender 2.0 to ensure security and efficiency. System Integration: Worked on integrating blockchain features into the browser extension and backend server for a functional and reliable system. Stakeholder Support: Helped stakeholders set up blockchain infrastructure and operational wallets, ensuring they could effectively manage and control the system. Cross-Team Collaboration: Collaborated with other teams to ensure blockchain solutions fit seamlessly into the overall system architecture and project goals.

Architectural Planning: Designed the application architecture and chose the technology stack to ensure it met scalability, security, and performance needs. Team Formation & Leadership: Assembled and managed a team of developers, encouraging collaboration and innovation across disciplines. Roadmap Management: Organized the product roadmap, refined the backlog, and planned tasks to align with business objectives. Backend Development: Focused on backend development and infrastructure improvements to build a stable and reliable platform. Deployment Management: Managed application version deployments, including database migrations to ensure smooth transitions without downtime. Client Collaboration: Held regular meetings with clients to understand their needs, gather feedback, and incorporate their priorities into the development pipeline. Agile Processes: Led sprint planning, task refinement, and iterative development cycles to continuously improve workflows and deliverables.

In this and previous roles, I worked with a variety of clients on blockchain-based projects, focusing on understanding their needs and delivering solutions that aligned with their business goals. This required close collaboration with stakeholders to define requirements, propose architectures, and implement technologies across different blockchain ecosystems. As the Leader, I oversaw the blockchain department, managed multiple projects, and ensured work was delivered within scope and budget. Team Leadership: Supervised multiple blockchain projects, ensuring teams stayed on track with goals, timelines, and deliverables. Recruitment & Evaluation: Managed hiring for the blockchain department, evaluated team members’ performance, and supported their growth. Resource Allocation: Assigned team members to projects based on their skills and experience to ensure efficient project execution. Performance Monitoring: Reviewed team performance across projects and worked on improvements to enhance collaboration and productivity. Architecture Proposals: Designed blockchain architectures to meet client requirements and technical constraints. Scope & Budget Management: Defined project scopes and timelines that aligned with client budgets while balancing feasibility and quality. Client Collaboration: Acted as a primary point of contact for clients alongside product owners to ensure clear communication of requirements and expectations. Project Delivery: Delivered blockchain solutions on time, ensuring they met client needs and technical standards.

Conceptual work and development of web application (based on PHP, Phalcon) for running online tests and exams. Update of environment version, framework, and long-living code of the application. Rebuilding of database, entities, and relations. Rebuilding of application front-end. Development of numerous new features. Fixing of numerous old bugs. Development of network infrastructure setup based on AWS services.

Development of several clients in different languages (Rust, Python, Golang, JavaScript) for Sliceup engine.

Guided clients in starting new blockchain-based projects, helping them define business objectives, design architectures, and implement solutions. Designed and developed financial and rewards components for mining pools while securing wallets and integrating mining protocols. Delivered numerous smart contracts in Solidity for use cases such as ERC20/ERC721 tokens, multi-signature wallets, ICOs, token distribution, NFTs, and NFT marketplaces.