Marvin Calero

Marvin Calero  new_releases

About

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Technical Lead at Newcombin
El Salvador
Contact Marvin regarding: 
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Full-time jobs
Starting at USD3.5k/month
Flexible work
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Résumé

Jobs verified_user 0% verified
  • NewCombin
    Technical Lead public Remote experience
    NewCombin
    Jul 2024 - Current (2 years)
    As a Technical Lead, I spearhead the design, development, and maintenance of JavaScript and Python projects, ensuring compliance with international standards for quality, reliability, and security. Overseeing teams of 3–6 engineers, I leverage cutting-edge market technologies to deliver cost-effective solutions that empower clients and support the company’s long-term objectives.
  • NewCombin
    Senior Software Engineer public Remote experience
    NewCombin
    Feb 2024 - Jul 2024 (6 months)
    I spearhead the design, development, and maintenance of JavaScript and Python projects, ensuring compliance with international standards for quality, reliability, and security. Overseeing teams of 3–6 engineers, I leverage cutting-edge market technologies to deliver cost-effective solutions that empower clients and support the company’s long-term objectives. By setting clear project metrics and performance benchmarks, I actively monitor and optimize team output and accelerate development cycles through AI-driven tools. In addition to stakeholder collaboration and strategic leadership engagement, I focus on mentoring my team to foster continuous growth and maintain consistently high project scores.
  • T
    Senior Frontend Developer public Remote experience
    Thrivelab
    Jan 2024 - Dec 2024 (1 year)
    As a JavaScript Developer, I spearheaded the creation of innovative features that helped maintain a competitive edge and grew the user base to thousands of daily active users. Collaborating with cross-functional teams, I delivered end-to-end solutions using React.js, Next.js, Nest.js, and React Native with Expo, effectively converting ad-driven leads and optimizing performance for robust web and mobile applications. Additionally, I built a mobile app from the ground up, scaling it from an initial beta group to thousands of active users. This application securely captured and transmitted health metrics to the backend under strict personal health information regulations, ensuring HIPAA compliance and reinforcing patient data protection.
  • GBH
    Software Engineer
    GBH
    Sep 2021 - Dec 2023 (2 years 4 months)
    As a Senior Software Engineer, I led full-stack projects in JavaScript (backend, frontend, and mobile), provided technical support for business decisions, and ensured high software quality. I successfully migrated applications from AngularJS to ReactJS, implemented clean architectures using DDD in Node.js, and integrated TypeScript to boost productivity. Additionally, I enhanced product functionality across mobile and backend systems, supported DevOps initiatives with Docker, improved API performance by reducing response times by 200%, and increased system observability with tools like Mixpanel and Sentry. I also maintained and enhanced legacy PHP/Laravel systems, improving code quality and implementing modern patterns while ensuring backwa
  • GBH
    Mobile Application Developer
    GBH
    Mar 2021 - Aug 2021 (6 months)
    - As a Mobile Application Developer at an esteemed company in the Dominican Republic, I played a crucial role in developing a new application for a significant Pension Fund Manager. - I was part of a dedicated team that created the application using Xamarin for cross-platform development. - Developing a multi-platform mobile application using Xamarin, ensuring the application met rigorous quality standards before deployment. Overseeing the upload of the project to their respective app stores, carrying out comprehensive quality assurance tests to guarantee optimal performance. - Collaborating with a team to manage project timelines, balance priorities, and meet tight deadlines. This position challenged me to navigate the intricacies of soft
  • A
    Full Stack Mobile Developer
    A&B POS Solutions
    Oct 2018 - Feb 2021 (2 years 5 months)
    - In my role at a fast-growing U.S.-based Fintech company, I contributed significantly to the development of our MVP, validating the business idea with early customers, and refining the product until it was ready for wide-scale deployment. - Developing cross-platform mobile applications using Xamarin, integrating them with payment gateways and peripheral card-reading devices. - Building a robust and scalable API from scratch that successfully provided adequate service to clients.
  • C
    Development Intern
    Central American Software Services
    Aug 2018 - Oct 2018 (3 months)
Education verified_user 0% verified
  • C
    HIPAA Workforce Proficiency (CHWP)
    Compliancy Group
    Sep 2024
  • I
    Habilidades y competencias para la vida y el trabajo
    Injuve-SV
    Jun 2018
  • USAID
    Desarrollador de aplicaciones móviles con C# Xamain
    USAID
    Jun 2018
  • B
    Bachelor of Science in Systems Engineering
    Jan 2016 - Dec 2021 (6 years)
Projects (professional or personal) verified_user 0% verified
  • P
    POS System SV
    Jun 2025 - Current (1 year 1 month)
  • U
    SVSECURE - a website to learn about online scams
    Universidad Gerardo Barrios UGB
    Apr 2023 - Jun 2024 (1 year 3 months)
Awards verified_user 0% verified
  • U
    Congreso Latinoamericano de información y comunicación
    Universidad Gerardo Barrios UGB
    Jun 2017