elmar

Owned technical strategy for the Tanssi and Moonbeam dApps, including the architecture for XCMSDK crosschain interactions. Mentored a team of 3 engineers on WAGMI, PolkadotJS integrations, and E2E testing (Playwright). Reviewed critical PRs before release. Led Moonbeam frontend migration from Create React App to Next.js + AWS Amplify, improving performance and deployments.

Built wallet connection and state management for v1 Moonbeam dApp using Ethers.js, handling multi-chain interactions across Moonbeam, Moonriver, and Moonbase Alpha. Led frontend migration from Create React App to Next.js + AWS Amplify, improving build times, SEO, and deployment workflows. Introduced Playwright E2E testing across Moonbeam dApp, catching regressions before releases and setting team testing standards. Established core Web3 patterns (Ethers.js → WAGMI/PolkadotJS transition) continued in Moonbeam v2 development.

Developed SmartTrade React Native app for machinery dealers to submit inventory through dynamic forms tied to sales workflows. Built Nest.js backend services + MongoDB models to support diverse machinery data across web and mobile clients. Connected React/React Native frontend to backend via shared schema sync, enabling autogenerated dealer questionnaires.

Built multiple Node.js microservices with Nest.js + RabbitMQ event-driven architecture for machinery marketplace scalability. Created data aggregation service generating PDF sales documents automatically from internal systems for sales team. Developed microservice to push machinery listings to partner websites via 3rd-party APIs.

Improved frontend business logic and state management for public news/community portal content display. Migrated class-based React components to Hooks, improving code readability and maintenance. Enhanced authentication layer with TypeScript + Cypress tests for better stability/security.

Promoted to Lead Engineer on new warehouse logistics project, owning technical architecture and daily team coordination for 5-7 engineers. Hired and onboarded 5-7 engineers, building technical interviews and onboarding docs. Built end-to-end parcel processing/tracking system: Node.js backend, React web app, React Native mobile, and Electron desktop app. Delivered warehouse management tools with product team, enabling daily processing of thousands of international parcels.

Built backend microservices (Node.js) and customer apps (Angular.js) for large-scale logistics platform. Created public parcel tracking page end-to-end, used by thousands of end customers daily. Developed full-stack label generation system processing thousands of international e-commerce parcels daily.

Maintained and enhanced UI for high-traffic search engine using PHP + JavaScript. Fixed production bugs across platform, improving stability for public users.

Built custom WordPress sites for small businesses and entrepreneurs launching their first online presence. Redesigned existing sites with PHP/JavaScript/Bootstrap to improve usability and appearance.

Developed 'Agent Stick' iOS game with Objective-C, Cocos2D, and Box2D physics. Programmed core game logic, character animations, and unique on-screen drawing mechanic for physics interactions. Launched game on App Store, reaching several hundred thousand downloads.