Matthew Sullivan

Full-Stack Software Engineer
Best Bit Software

I build reliable web applications, APIs, and cloud-backed systems that solve real business problems.

About

Nice to meet you — I'm Matthew.

I'm a full-stack software engineer with 7+ years of experience building and modernizing applications for enterprise, startup, and client teams. I turn complex business requirements into responsive interfaces, reliable APIs, secure workflows, and maintainable software systems.

My strongest tools are React, Next.js, TypeScript, Node.js, Java, SQL, and AWS. I've delivered more than a dozen client applications and owned work across architecture, data modeling, implementation, deployment, and support.

Most recently, I built an M&A transaction platform supporting seller onboarding, buyer outreach, due diligence, and deal tracking. I hold an MS in Computer Science from Georgia Tech and enjoy building products that are both technically sound and genuinely useful to the people who rely on them.

Experience

  1. Jul 2022 - Present

    Full-Stack Developer/ Best Bit Software

    I’ve designed and launched 12+ full-stack web applications, including CMS-driven websites, client-facing tools, reusable component libraries, APIs, and cloud deployments. I often work directly with business owners to turn loose product requirements into clear technical plans, data models, and implementation strategies. My goal is to combine strong engineering, clean design, and practical business sense to build software that actually supports the way a company operates.

    • NextJS
    • NodeJS
    • TypeScript
    • Vercel
    • Sanity CMS
    • Figma
    • PostgreSQL
  2. Jul 2022 - Jan 2026

    Full-Stack Developer / Optics Capital Advisors

    Designed and built a full-stack M&A transaction platform supporting more than 10 engagements across seller onboarding, buyer outreach, due diligence, and deal tracking. Developed React, Next.js, TypeScript, Node.js, NestJS, PostgreSQL, and AWS solutions with role-based workflows, document collection, NDA gating, virtual data rooms, and automated outreach while owning architecture, deployment, production support, and feature delivery.

    • NextJS
    • NestJS
    • PostgreSQL
    • PrismaORM
    • AWS
    • Twilio
    • TypeScript
    • Docker
    • Vitest
  3. Jun 2018 - Jun 2022

    Software Developer / CGI, Inc.

    Developed and modernized financial and accounting software for U.S. government clients across Java and Spring services, Oracle SQL databases, integration layers, and web interfaces. Improved legacy modules with Spring services and redesigned JSP interfaces, while supporting Jenkins CI/CD, AWS and Heroku deployments, containerized PostgreSQL, and Agile delivery.

    • Java
    • C++
    • SQL
    • Linux
    • Cloud Architecture

Projects

  • Admin Dashboard | CRM | Kanban | Real Time Updates

    An example dashboard that could be used as an internal tool for business management. Built with full authentication, charts and activities, a comprehensive table for companies with CRUD and search, and a Kanban board with real-time synchronization using the Refine framework.

    • GraphQL
    • TypeScript
    • Refine.dev
    • Antd
    • React
    • dnd kit
    Admin Dashboard | CRM | Kanban | Real Time Updates project screenshot

  • Build a Clone of Threads Social App

    A full stack application based off of Meta's Threads app. In this app, users are managed with Clerk and synced with a non-relational database. Feel free to sign up, create a thread, leave a comment, see activity, or even find a community to join! The app is fully deployed and you can see my code on GitHub.

    • NextJS
    • Clerk
    • Shadcn/ui
    • Zod
    • Svix
    • MongoDB
    Build a Clone of Threads Social App project screenshot