Carlos Lenon

Carlos LenonĀ  new_releases

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šŸ„·šŸ½Senior Frontend Engineer & Team Lead | React, Node.js, TS | Certified Scrum Master | ⚔ Integrating AI (Claude, Gemini, Vercel) into modern Web Architectures
Nicaragua

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Starting at USD33/hour
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Jobs verified_user 0% verified
  • FreeBalance
    Team & Architect Lead public Remote experience
    FreeBalance
    Aug 2024 - Current (2 years 3 months)
    1. Engineering Leadership: Lead and mentored a cross-functional team of 3 Senior Developers, implementing agile practices, rigorous code reviews, and DDD patterns that improved features time-to-market by 25%.
    2. Architecture & Reusability: Designed and architected a scalable multi-repo Design System and shared core libraries used across 4 enterprise-grade web portals, cutting frontend development redundancy by 40%.
    3. System Modernization: Spearheaded the migration of legacy client-side modules to React, TypeScript, and Zustand, resulting in a 35% reduction in initial page load times and a significantly improved developer experience.
    4. State & Data Management: Engineered complex global state structures and optimized REST/Gra
  • Kronoscode
    Senior Frontend Engineer/Shopify Dev public Remote experience
    Kronoscode
    Jul 2023 - Jul 2024 (1 year 1 month)
    1. Architected and customized custom Shopify Admin Applications utilizing Ruby on Rails and jQuery, integrating secure APIs that automated merchant workflows and optimized back-office store maintenance.
    2. Refactored legacy Liquid themes and executed critical frontend bug fixes for high-traffic US e-commerce stores, improving mobile page load speed and reducing checkout friction.
    3. Supervised end-to-end site management and API integrations, ensuring 99.9% platform uptime during high-volume promotional sales events.
    4. Collaborated directly with US clients to translate business requirements into technical solutions, delivering scalable custom features while reducing external application dependency costs.
  • I
    Team Lead & Senior Node.js Developer public Remote experience
    InformageStudio
    Jan 2022 - Jun 2023 (1 year 6 months)
    1. Acted as Scrum Master and Agile Project Manager, leading sprint planning, daily standups, and retrospectives for a cross-functional team, which increased feature delivery velocity by 20%.
    2. Designed and optimized robust RESTful and WebSocket APIs to handle spikes in concurrent user traffic during peak gambling hours, maintaining 99.9% system availability.
    3. Championed Clean Architecture and Agile best practices within the engineering team, reducing technical debt and streamlining the deployment of new game integrations.
  • Iteris  Briteris
    Team Lead & Senior Frontend Engineer & Scrum Master public Remote experience
    Iteris Briteris
    Jan 2021 - Dec 2021 (1 year)
    1. Spearheaded the legacy migration of a high-impact web platform from AngularJS to modern React.js, improving overall bundle size, performance metrics, and developer velocity.
    2. Architected and proposed a scalable Design System blueprint based on Atomic Design principles, establishing consistent UI components and unifying the visual identity across product lines.
    3. Acted as Agile Facilitator and Scrum Master, leading daily standups, sprint planning, backlog grooming, and retrospective ceremonies to ensure optimal team alignment and delivery predictability.
    4. Provided technical mentorship and unblocked cross-functional team members, fostering a collaborative engineering environment and consistently meeting sprint sprint-by
  • iDo AGENCY
    Senior Frontend Engineer (React/Nodejs) public Remote experience
    iDo AGENCY
    Jan 2020 - Dec 2020 (1 year)
    1. Architected and engineered custom Shopify API integrations and robust backend services utilizing Node.js, Express, and GraphQL, streamlining high-performance data synchronization and checkout workflows.
    2. Spearheaded the integration of React.js and Next.js applications into custom Shopify storefronts, designing highly interactive, modular interfaces that optimized core web vitals and improved user conversion rates.
    3. Designed and established a scalable Monorepo architecture using Lerna, successfully reducing code duplication across projects, simplifying dependency management, and cutting overall team deployment times in half.
    4. Configured secure cloud asset pipelines with AWS S3 and integrated headless CMS capabilities
  • IT Crowd
    Senior React Developer public Remote experience
    IT Crowd
    Jan 2019 - Dec 2019 (1 year)
    1. Architected and developed modular user interface components utilizing React.js and Redux, ensuring highly responsive, fluid, and scalable user experiences for international clients.
    2. Optimized client-side performance and state management flows, reducing application load times and improving core frontend rendering metrics.
    3. Collaborated closely with backend engineers and UI/UX designers to integrate RESTful APIs seamlessly, transforming complex visual wireframes into production-ready, clean code.
    4. Participated actively in Agile/Scrum sprints and code reviews, promoting code quality, reusability, and adherence to modern JavaScript (ES6+) and CSS/SASS best practices.
  • Avantica
    Senior React Developer
    Avantica
    Jul 2017 - Jun 2018 (1 year)
    1. Spearheaded the technical migration of complex CRM platform features from AngularJS to React.js, ensuring a modern, component-driven architecture that improved runtime performance and application scaling.
    2. Designed and developed highly reusable frontend components and core UI logic, utilizing modern JavaScript (ES6+), React state management, and strict responsive design practices.
    3. Implemented robust client-side testing environments utilizing Karma and Jasmine, significantly increasing test coverage and reducing production regression bugs.
    4. Collaborated within distributed teams in Git and Bitbucket environments, conducting constructive code reviews to maintain high quality, standard-compliant, and optimized codebases
  • PartsBase Inc
    Team Lead & Senior Frontend Engineer & UI/UX public Remote experience
    PartsBase Inc
    Jan 2015 - Jan 2017 (2 years 1 month)
    1. Spearheaded the architectural migration of the commercial CRM platform from legacy Microsoft Razor/MVC/.NET to a highly modular AngularJS single-page application (SPA).
    2. Served as the Frontend Lead for distributed, international engineering teams across Nicaragua, Mexico, and Russia, coordinating task delegation, performing comprehensive code reviews, and aligning technical delivery standards.
    3. Designed and developed intuitive company intranet sales platform dashboards, bridging the gap between business requirements and fluid user experience design (UI/UX).
    4. Standardized clean-code conventions and modern workflows by configuring automated build pipelines with Grunt and Gulp, alongside enforcing frontend test coverage
  • U
    Software Engineer Professor
    Universidad Adventista de Nicaragua (UNADENIC)
    Jan 2015 - Jul 2015 (7 months)
    Software Engineer Professor
  • C
    AngularJs Developer public Remote experience
    Core Systems Global
    Mar 2014 - Apr 2015 (1 year 2 months)
    1. Build Hospital Vivian Pellas Medical CRM Dashboard platform
    2. Build Client and Admin Dashboard for Grumer App
  • i
    Web Developer public Remote experience
    iQuelo Sofware Solution
    Mar 2013 - Mar 2014 (1 year 1 month)
    1. Maintance for Nicaragua Labour Platform MITRAB
    2. Design business and system process using Bizagi Modeler and UML designer for migration version
  • Nicaragua Sugar Estates Limited
    U
    EARLIER PROFESSIONAL EXPERIENCE
    Nicaragua Sugar Estates Limited, University of Central America
    Jan 2011 - Feb 2013 (2 years 2 months)
    Web Developer (Internship), Nicaragua Sugar Estates Limited (SER), Nicaragua | 2012 – 2013 (Tech Stack:
    jQuery, Razor/MVC/.NET, SVN)
    Web Developer (Internship), University of Central America, Nicaragua | 2011 – 2012 (Tech Stack: Python2x/3x,
    jQuery, VB.NET, Bizagi, HTML, CSS)
Education verified_user 0% verified
  • U
    Bachelor Software Engineer
    University of Central America - UCA
    Jan 2008 - Jan 2014 (6 years 1 month)
  • N
    Technical Hardware Informatic
    National University of Nicaragua - UNI
    Jan 2006 - Jan 2008 (2 years 1 month)
Publications verified_user 0% verified
  • C
    Chapter#1: Reactjs/Hooks #101 Generalidades
  • Y
    You Don't Know JS Yet — KS / Notas personales
  • R
    Reactjs #hooks, una solución útil?