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Adrian – React, Typescript, Solidity, experts in Lemon.io

Adrian

From Mexico (UTC-6)flag

Front-end Web Developer|Middle
Blockchain Engineer|Senior

Adrian – React, Typescript, Solidity

Adrian is a senior blockchain engineer with strong expertise in Solidity and smart contract development, complemented by practical Web3 integration skills. He demonstrates solid understanding of blockchain fundamentals, smart contract security, and architectural decision-making. While his React and TypeScript skills are mid-level, he excels in backend blockchain roles and has experience mentoring and leading teams.

7 years of commercial experience in
Asset management
Blockchain
Cryptocurrency
Fintech
Social media
B2B
Enterprise software
Mobile apps
SaaS
Web3
Web development
Main technologies
React
7 years
Typescript
1.5 years
Solidity
3 years
web3.js
2.5 years
Ethers.js
1 year
Additional skills
Node.js
PostgreSQL
JavaScript
Java
Xamarin
C#
.NET
REST API
Express.js
MongoDB
Jest
Direct hire
Possible
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Experience Highlights

Technical Owner & Senior Web3 Full-stack Engineer
May 2023 - Dec 20252 years 7 months
Project Overview

Led the end-to-end design and development of a decentralized social platform built on blockchain technologies. Architected and implemented the full system, including smart contracts in Solidity, decentralized storage using IPFS, and a high-performance frontend application built with JavaScript and React. The platform focuses on privacy-preserving interactions and incentive-driven on-chain mechanisms, enabling users to participate in a censorship-resistant, user-owned digital ecosystem.

Project gallery:
Portfolio example for Utonoma by Adrian, Technical Owner & Senior Web3 Full-Stack Engineer
Portfolio example for Utonoma by Adrian, Technical Owner & Senior Web3 Full-Stack Engineer
Portfolio example for Utonoma by Adrian, Technical Owner & Senior Web3 Full-Stack Engineer
Portfolio example for Utonoma by Adrian, Technical Owner & Senior Web3 Full-Stack Engineer
Responsibilities:
  • Led the full technical architecture of the platform, designing and implementing smart contracts, frontend systems, and backend integrations from the ground up;
  • Developed and deployed production-grade smart contracts in Solidity, implementing secure and reliable on-chain logic;
  • Designed and integrated privacy-preserving validation flows using zero-knowledge proofs (Circom, SnarkJS), enabling secure user interactions without exposing sensitive data;
  • Architected incentive-driven mechanisms to support user engagement and ensure correct behavior within the system;
  • Built a high-performance frontend application using JavaScript, focusing on efficiency, responsiveness, and seamless blockchain interaction;
  • Integrated decentralized storage solutions (IPFS) for content persistence and distribution;
  • Designed and implemented backend services using Node.js, creating APIs, data models, and persistence layers to support core workflows;
  • Made key architectural decisions regarding scalability, security, and system design while operating in a live production environment;
  • Ensured secure interaction between on-chain and off-chain components, maintaining consistency and reliability across system layers;
  • Acted as technical owner, driving the long-term vision and execution of the platform.
Project Tech stack:
Solidity
IPFS
JavaScript
Node.js
Typescript
PostgreSQL
React
Senior Software Engineer
Sep 2022 - May 20238 months
Project Overview

A large-scale enterprise Operational Intelligence platform for real-time monitoring and analysis of industrial operations. Contributed to the development and refactoring of complex frontend components using React, improving performance, maintainability, and overall code quality within a large production codebase. Supported data-driven dashboards that enabled users to visualize operational metrics, detect anomalies, and make informed decisions across distributed systems.

Project gallery:
Portfolio example for Honeywell by Adrian, Advanced Software Engineer
Portfolio example for Honeywell by Adrian, Advanced Software Engineer
Responsibilities:
  • Refactored complex React components within a large-scale enterprise codebase, significantly improving maintainability, readability, and long-term scalability;
  • Reduced technical debt by identifying and addressing architectural and code-level issues in legacy components;
  • Built and maintained highly testable UI components using predictable state management patterns with Redux and Redux-Saga;
  • Contributed to the development of data-driven dashboards for real-time monitoring and visualization of operational metrics;
  • Led decisions around UI structure, styling, and consistency, ensuring alignment with enterprise design standards and improving overall user experience;
  • Collaborated within a large cross-functional team, following strict production processes, code reviews, and quality standards;
  • Diagnosed and resolved bugs in a complex production environment, improving system reliability and stability;
  • Acted as a go-to contributor for frontend-related challenges, supporting teammates and driving best practices in UI development.
Project Tech stack:
React
Redux
Redux Saga
Software Engineer II
Sep 2020 - Sep 20222 years
Project Overview

A cross-platform Check-In/Check-Out mobile application for enterprise use, enabling real-time tracking of user attendance and operational activities. Built using C# and Java, the application integrated with a microservices-based backend to ensure reliable data synchronization, validation, and reporting. Contributed to core application architecture and implemented key features involving device-level interactions on Android, ensuring accurate event capture and seamless user experience in production environments.

Project gallery:
Portfolio example for Honeywell by Adrian, Software Engineer II
Portfolio example for Honeywell by Adrian, Software Engineer II
Portfolio example for Honeywell by Adrian, Software Engineer II
Responsibilities:
  • Developed a cross-platform mobile application using Xamarin (C#), contributing to core architecture and foundational features from early stages;
  • Implemented Android-specific functionality using native Java and Android SDK APIs, enabling deeper integration with device capabilities beyond standard cross-platform abstractions;
  • Integrated the mobile application with a microservices-based backend (C#/.NET), ensuring reliable data flow, validation, and synchronization of check-in/check-out events;
  • Collaborated closely with the Product Owner, translating business requirements into technical solutions and communicating trade-offs effectively;
  • Contributed to the design of scalable and maintainable application structure, supporting long-term product evolution;
  • Ensured application reliability in real-world usage by handling edge cases related to connectivity, data consistency, and user interaction flows;
  • Worked within a large enterprise environment, following strict development standards, code review processes, and production-quality practices.
Project Tech stack:
C#
Xamarin
Android SDK
Java
.NET
Full Stack Developer
Mar 2020 - Aug 20205 months
Project Overview

B2B fintech SaaS platform focused on automating procurement, payments, and financial workflows for enterprise clients. Contributed to the development of user-facing features and backend integrations that streamlined payment processing, vendor interactions, and data capture flows. The platform enabled businesses to centralize financial operations, reduce manual processes, and improve efficiency through scalable, cloud-based solutions.

Project gallery:
Portfolio example for Yaydoo by Adrian, Full Stack Engineer
Portfolio example for Yaydoo by Adrian, Full Stack Engineer
Portfolio example for Yaydoo by Adrian, Full Stack Engineer
Responsibilities:
  • Developed full-stack features for a B2B SaaS platform, contributing to both frontend interfaces and backend integrations using Node.js;
  • Built high-conversion lead capture forms and user input flows, ensuring seamless data collection and integration with backend services;
  • Implemented payment-related integrations aligned with client-specific branding and system requirements;
  • Developed dynamic transactional email templates using Handlebars, ensuring consistent rendering across major email clients;
  • Collaborated on the integration of financial workflows, supporting automation of procurement and payment-related processes;
  • Worked within a production environment, delivering reliable features aligned with business requirements and enterprise standards;
  • Contributed to improving user experience in critical financial flows, focusing on clarity, usability, and conversion.
Project Tech stack:
Node.js
React
REST API
HTML
CSS
Handlebars

Education

2017
Electrical and Electronics Engineering
Incomplete

Languages

Spanish
Advanced
English
Advanced

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