SYSTEM_ONLINE // V2.6

Darryl Most

Software Engineer

Specializing in high-performance web applications, distributed backend services, and scalable data-intensive systems.

01 // ABOUT

I am a Full-Stack Software Engineer with over 5 years of production experience building high-throughput data pipelines, reliable distributed systems, and real-time business applications.

Across my career, I have served as frontend lead and team lead—mentoring engineers, directing code architecture, and driving robust testing automation suites. Whether provisioning cloud infrastructure with Terraform on AWS or engineering reactive interfaces with Vue, Nuxt, and React, I prioritize performant, maintainable systems that scale under load.

At Capital One, I managed legacy ETL systems that processed and crunched data for business stakeholders across AWS EC2, Lambda, and proprietary enterprise data lakes.

At CrossCountry Mortgage, I served as frontend lead and overall team lead delivering core business applications—including designing seamless real-time synchronicity and state management across multi-window browser workflows.

At Google, I helped build out the automated privilege allocation engine for internal users by leveraging Java and proprietary distributed tooling.

Outside of enterprise infrastructure, I design and run real-time market engines and data aggregation tools like tcg-deals.io.

02 // EXPERIENCE

Senior Software Engineer @ Capital One

Nov 2025 — Jul 2026
Node.js + React + Python + Terraform
  • Architected serverless ETL pipeline flow utilizing Lambdas and S3 buckets to refactor legacy systems.
  • Pioneered an efficient approach to ETL using DuckDB within AWS Lambda on a 6GB dataset.
  • Built an automation use-case in Python to convert DAT files to CSV, and an ETL flow using PowerShell for transmitting data to the data lake.
  • Assisted in developing SmartOps runbooks via IaC and regularly deployed AWS resources transpiled to Terraform.
  • Secured legacy React web application to comply with enterprise security policies and made agile feature updates.
Python AWS Lambda DuckDB Terraform React

Software Engineer II — Frontend Lead @ CrossCountry Mortgage

Jul 2023 — Jan 2025
Node.js + Vue & C#
  • Led the frontend engineering team with daily code reviews and branch management.
  • Designed reactive state management of the main dashboard page with complex data and API dependencies.
  • Built a recurring job transferring data from Salesforce to MongoDB and AWS S3 every 15 minutes.
  • Designed a polling solution for refreshing UI elements with live data from backend servers.
Vue.js Node.js MongoDB AWS S3 C#

L4 Software Engineer @ Google LLC

Jun 2022 — May 2023
Java & Core Distributed Services
  • Implemented and led integration test development, achieving 95% test coverage.
  • Developed 60% of service endpoints powering the internal journey engine.
  • Built a fault-tolerant cron service communicating with the journey engine every 15 minutes, ensuring 100% uptime during deployment.
  • Led backfill migrations processing over 1,000,000 data points of internal customer data.
  • Contributed to successful MVP launches and maintained production reliability during on-call rotational duties.
Java Distributed Systems Cron Architecture Integration Testing

Software Engineer — Team Lead @ CrossCountry Mortgage

Oct 2021 — May 2022
Node.js + Vue & C#
  • Participated in full-stack feature development adhering to DRY and single-responsibility standards.
  • Collaborated with QA and team leads to design 80% of all user tickets.
  • Paved the way for automated testing adoption using Cypress, gaining 20% application coverage.
Node.js Vue.js C# Cypress

Consultant @ JBS Solutions

Oct 2020 — Apr 2021
Node.js + React / Redux
  • Gathered client requirements via asynchronous collaboration with stakeholders and consultants.
  • Implemented dynamic user interfaces allowing user manipulation of Redux store data.
  • Debugged and expanded upon pre-existing, well-established production codebases.
Node.js React Redux

Software Engineer @ State Auto

Mar 2020 — Jul 2020
AWS Cloud & Full-Stack Development
  • Refactored cloud applications to utilize AWS Connect Contact blocks over Lambda fulfillments.
  • Met tight project timelines by delivering a complete production MVP within 3 months of hire.
  • Collaborated daily in asynchronous agile standups across distributed team members.
AWS Connect AWS Lambda JavaScript
03 // PROJECTS
Flagship Application tcg-deals.io

TCG Deals Real-Time Market Platform

A comprehensive marketplace aggregator and deal-tracking engine built to monitor, index, and surface real-time pricing anomalies across trading card markets. Hosted with custom apex DNS routing and automated TLS on Render.

  • High-frequency ingestion pipelines tracking marketplace price deviations.
  • Optimized caching layer for sub-100ms pricing feed updates.
  • Production deployment pipeline powered by automated container builds.
TypeScript Vue / Nuxt PostgreSQL Render
04 // SKILLS

Languages & Core

TypeScript JavaScript Python Java C# SQL

Frontend & UI

Vue.js Nuxt.js React Redux Tailwind CSS HTML5 / CSS3

Backend & Storage

Node.js RESTful APIs PostgreSQL MongoDB DuckDB Redis

Cloud, DevOps & QA

AWS (Lambda, S3) Terraform Docker Cypress Git / GitHub CI Jenkins
05 // CONTACT

Initialize Connection

Open to conversations regarding full-stack engineering roles, distributed systems architecture, and consulting projects.