You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Malt Strategy
New report
Malt Tech Trends 2026
David RoyDR

David Roy

Senior Software Engineer

€129/day
Omaha, US
3-7 years
Typescript
React.js
Node.js
Python
VueJS

Average response time: 1 hour

About David

Senior Software Engineer with 7+ years of experience building scalable, high-performance web and mobile applications across fintech, e-commerce, and healthcare. Strong full-stack expertise in React, Next.js, Vue, Node.js, and Python, delivering secure, accessible, and API-driven solutions.
Experienced with AI integration using OpenAI APIs, LangChain, and vector databases to enhance engagement and automate workflows. Known for clean code, performance optimization, and effective cross-functional collaboration.

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • FNBO
    Senior Software Engineer (Hybrid)
    BANKING AND INSURANCE
    August 2022 - October 2025 (3 years and 2 months)
    Omaha, NE, USA
    • Engineered responsive user interfaces for FNBO Online Banking using React, TypeScript, and Tailwind CSS, achieving 98% cross-browser coverage.
    • Designed a microfrontend architecture using Next.js and Vue for Bend by FNBO, enabling deployments, real-time data integration, and 25% faster loads through CDN optimization.
    • Implemented React Native mobile app features for Slice POS, including offline handling and push notifications, improving user retention by 18%.
    • Developed Node.js, Nest.js and Python microservices for transaction processing with JWT, OAuth2, and REST/GraphQL APIs, securing over 1M monthly transactions.
    • Constructed backend services for Bend by FNBO CaaS APIs, integrating Stripe and caching layers, reducing errors by 40% while handling 500+ requests.
    • Designed database-driven workflows for Slice POS using PostgreSQL, Redis, and MongoDB, achieving 99.9% reliability for loan processing and transactions.
    • Integrated generative AI chat solutions with LangChain, ChatGPT, and Pinecone, enabling multi-turn conversations and increasing engagement by 20%.
    • Enhanced customer support through AI-driven query handling using LLM pipelines and OpenAI API, reducing latency and improving accuracy by 35%.
    • Implemented CI/CD pipelines with GitHub Actions and automated testing using Jest and Cypress, cutting deployment time by 40% and failures by 30%.
    • Automated builds with Docker and Nginx across multiple environments, allowing instant rollback and improved version control.
    • Deployed and optimized Node.js microservices on AWS EC2, leveraging S3 for storage, reducing transaction processing latency by 30%.
    • Engineered scalable AWS cloud solutions using EC2, and Lambda, enhancing FNBO CaaS API performance and reliability for 500+ daily requests.
    • Mentored 5+ junior developers and collaborated with cross-functional teams using Agile, Jira, and Confluence, boosting sprint delivery velocity by 15%.
    Node.js Python Docker Next.js PostgreSQL
  • ACI Worldwide
    Software Engineer (Hybrid)
    TECH
    October 2018 - June 2022 (3 years and 8 months)
    Elkhorn, Omaha, NE, United States
    • Engineered responsive React and Next.js interfaces for a real-time payments platform, improving transaction visibility and reducing load time by 30%.
    • Created reusable Vue components for an eCommerce payment gateway, improving user engagement and increasing conversion rates by 22%.
    • Integrated Node.js and Python backend services with real-time fraud scoring APIs, reducing fraudulent transactions by 18%.
    • Implemented mobile-first React Native dashboards for payment analytics, increasing mobile adoption by 25% across iOS and Android users.
    • Optimized frontend performance by implementing server-side rendering in Next.js and lazy-loading modules, reducing page load time by 40%.
    • Maintained cross-platform UI components and state management for complex payment flows, ensuring 100% feature parity across web and mobile.
    • Participated in code reviews, unit testing, and CI/CD integration, improving code reliability and reducing bug reports by 30%.
    Node.js Next.js Python VueJS React Native

Recommendations

Be the first to recommend David

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Signup to reveal

Education

  • Bachelor's Degree
    University of Nebraska Omaha (UNO)
    2018
    Bachelor's Degree

Skill set

Software Architecture
Mobile App Deployment
Front End Interface Development
Backend Service Development
CI/CD Management
Agile Project Management
Fullstack

Categories