Nelson Lopez

Nelson Lopez

Software Engineering and Design in New York City , He/Him

nelsonr-lopez
About

Hi, I’m Nelson Lopez—a software engineer based in the Bronx with a strong background in fintech and full-stack development. I specialize in building performant, user-focused web applications using modern frameworks like Astro.js, NestJS, and Tailwind.

With experience ranging from internal financial systems to customer-facing marketplaces, I bring a practical, product-minded approach to engineering. I’m especially passionate about clean architecture, SEO performance, and shipping fast, accessible experiences.

Outside of work, I’m a lifelong fan of football, basketball, and anime. Whether I’m digging into analytics or exploring great storytelling, I’m always curious and eager to learn something new.

If you’re looking to collaborate on thoughtful, well-built digital products—let’s connect.

Contact
Work Experience
  • 2024 - Now
    Software Engineer Freelance
    • Developed and deployed web applications and internal tools for clients and personal projects.
    • Designed and optimized APIs, databases, and full-stack architectures using Elm, TypeScript, Node.js, and Ruby on Rails.
    • Improved performance and SEO for various web projects through auditing and testing.
    • Optimized financial reporting workflows by automating spreadsheet calculations and improving data organization for better decision-making.
    • Assisted in reconciling accounts and preparing financial statements, ensuring accuracy in bookkeeping records for small business operations.
  • 2022 - 2023
    Software Engineer PowerReviews
    • Worked under VP of Engineering and Director of Product to deliver features around sampling services to help support clients with user generated content while exercising scrum practices.
    • Engineered full-stack feature development for in house sampling platform, resulting in an increase in user engagement. Employed Elm, Ruby on Rails, SQL, and Tailwind.
    • Improved internal dashboard user experience by improving filtered sampling user allocation and streamlining the distribution of email information, which in turn aided Project Managers in delivering timely updates to clients.
    • Contributed to multi-tenant architecture development, ensuring robust data isolation, security, enhanced privacy, and scalability during the migration of over 300,000 users to the internal platform.
    • Enhanced email communication features to streamline and automate campaign cadence maintenance, resulting in a reduction in manual effort and ensuring consistent and timely delivery of sampling campaigns, all while focusing on backend improvements.
  • 2021 - 2022
    Founding Full Stack Developer 4US
    • Collaborated with Product Management and CTO to deliver features around financial services in the Political Fundraising sales cycle while employing peer review and continuous delivery.
    • Developed reconciliation user experience with donor transactions utilizing committee specifics via backend and 3rd party API calls.
    • Integrated disclosure generation service while writing several decoders for transaction aggregates from the backend.
    • Programmed full stack solutions with ELM, Node.js and GraphQL, while implementing and writing queries for story-driven interfaces on the front-end.
    • Designed and developed multi-step financial form experiences, reducing cognitive overload, optimizing ease of use and responsiveness.
  • 2020 - 2020
    Software Engineer Securitize
    • Developed a configuration management system for international payment form schemas supporting wire and ACH income distributions for over 150 countries.
    • Engineered procedure for dividend distribution to 300+ international investors while ensuring security and following compliance protocols.
    • Integrated email notification services for issuer to investor communication via 3rd party API’s including Sendgrid and Postmark.
    • Built out a tax form module for submitting and signing income tax filing information for supporting W-9, W-8BEN, and W-8BENE tax forms.