a photograph of steven jenkins

Steven Jenkins

Full-Stack Engineer

Senior Software Engineer with 9+ years of experience designing and building production-grade web applications and revenue infrastructure. Expertise in modern front-end architectures (React, Svelte/SvelteKit) and TypeScript, spanning full-stack development, payment systems integration, and AI-assisted workflows. Proven record of architecting scalable systems supporting 800+ concurrent users while achieving 99.9% uptime and reducing infrastructure costs by up to 87%, with a Bachelor's degree in Computer Science and minors in Mathematics and Business Administration.

Key Technical Achievements

Statistical Table Tennis demo

Statistical Table Tennis

Full-Stack SaaS Platform

2025

Architected and built complete production SaaS application from concept to paying customers in 3 months while managing multiple concurrent client engagements.

500+
Real-time Statistical Displays
3.5 months
Development Time To First Customer
99.9%
Self-hosted Infrastructure Uptime
2 hours +
daily time savings for users
139%
PERCENTILE MMR GROWTH (stripe)
$0
Startup infrastructure costs
Svelte 5SvelteKitDrizzle ORMSQLiteLucia AuthNode.jsUbuntu ServerPM2NginxCloudflareStripe APIoAuthFigma
Real-Time GPS Platform demo

Real-Time GPS Platform

Scalable Event Infrastructure

2025

Architected real-time tracking platform utilizing GPS location and metadata, associating individual devices to information including team name, last update time, and dynamically calculated race position.

150+
GPS Devices Synced Real-time
800+
Concurrent Users on Raceday
1-week
Ground Up Redevelopment in 2025
$0.13
Infrastructure Cost
2,500+
Livestream Viewers
4 Years
Continued Client Engagement and Counting
Svelte 5SvelteKitFirebase (Firestore, Realtime DB)JavaScript/TypeScriptREST APIsXMLJSONVercelOpenStreetMap API
Macro Exotics demo

Macro Exotics

Exotic Vehicle Rental Platform

2025

Full-stack ownership: Designed and implemented every layer including Firebase Authentication, Firestore database, RESTful API endpoints, front-end UI/UX with Svelte 5, and Stripe payment processing.

Svelte 5SvelteKitStripe APIFirebase (Auth, Firestore, Storage)TypeScriptREST APIsVercelGitGitHub
Wrench Totalcare Plus demo

Wrench Totalcare Plus

Complete System Architecture & iOS Application

2024

Full-stack ownership: Designed and implemented every layer including Firebase Authentication, Firestore database architecture, RESTful API endpoints, front-end UI/UX, and Stripe payment processing.

Svelte 5SvelteKitCapacitorStripe APIFirebase (Auth, Firestore, Storage)TypeScriptREST APIsVercelGitGitHubGoogle Cloud Platform (GCP)

Payment Processing & Subscription Platform

Financial Technology Infrastructure

2021

Architected subscription wellness platform generating $250,000 in revenue with Stripe API integration for subscription management, automated billing, and recurring payments.

$250,000
Year One Revenue Generated
JavaScript/TypeScriptHTMLCSSStripe APIFirebase (Auth, Firestore, Functions)REST APIsGoogle Cloud Platform (GCP)

Enterprise Technology Infrastructure

Complete System Architecture

2017

Complete technical leadership for disaster consulting startup scaling to $6-9M revenue. Led all technology decisions from founding through 80+ employee scale.

$6-9M
Company Revenue
80+ employees
Team Size
Zero
Migration Downtime
HTMLCSSBootstrapGoogle Sheets APIGoogle Apps ScriptEnterprise Email MigrationWeb InfrastructureAutomated Systems

Experience

JX Logic / JSX Software LLC

Technical Lead & Software Engineer

Wellington, Florida | 2017 - Present

Architected and deployed 7 production applications with Stripe payment integration generating monthly recurring revenue (MRR), building complete technical infrastructure from authentication through payment processing and automated billing reconciliation

  • Architected and deployed 7 production applications with Stripe payment integration generating monthly recurring revenue (MRR), building complete technical infrastructure from authentication through payment processing and automated billing reconciliation
  • Reduced infrastructure costs by 87% while scaling to 800+ concurrent users and 2,500 live stream viewers—migrated Real-Time GPS Platform from expensive provider to self-built solution using Firebase and OpenStreetMap API, maintaining 99.9% uptime across 4 consecutive production events
  • Built Statistical Table Tennis SaaS platform from concept to paying customers in 3 months—architected custom authentication (Lucia Auth), database layer (Drizzle ORM + SQLite), Stripe subscription billing, and front-end UI handling 500+ concurrent real-time countdown timers, customizable interface elements, oAuth integration with discord to allow scheduled reminders
  • Delivered zero-downtime production deployment for client CRM application after previous engineering team failed—rebuilt complete flight management system on self-managed Ubuntu server with Nginx reverse proxy, PM2 process management, UPS battery backup, and automated deployment pipeline
  • Designed and implemented partner API integration for equine health platform connecting Firebase backend to third-party HVMS veterinary software—automated benefit reconciliation by parsing invoice line items, updating Firestore records, and synchronizing adjustments across both systems
  • Led 3-person development team on Macro Exotics marketplace platform—coordinated pull request reviews, assigned features, implemented Stripe Connect for automated fund distribution to vehicle hosts, and built embedded checkout calculating dynamic pricing based on rental duration and add-ons
  • Rebuilt production GPS tracking system in one week when vendor changed API requirements—re-architected XML satellite feed processing, real-time database updates, and dynamic ranking calculations to support event scaling from $600K to $4.4M in fundraising

CaptiveOne Advisors™

Lead Revenue Operations Engineer

Wellington, Florida | 2020 - 2023

Accelerated sales velocity by 3x while increasing annual revenue 1.8x—reduced proposal turnaround from 1-2 weeks to under 4 hours by building automated financial modeling system and leading 3-person engineering team to deliver 35+ industry-specific captive insurance calculation models

  • Accelerated sales velocity by 3x while increasing annual revenue 1.8x—reduced proposal turnaround from 1-2 weeks to under 4 hours by building automated financial modeling system and leading 3-person engineering team to deliver 35+ industry-specific captive insurance calculation models
  • Architected new business vertical generating $7M+ in annual revenue—identified market opportunity, built complete technical infrastructure including Stripe subscription platform, automated benefit management system, and venue partnership integrations that became one of company's primary revenue drivers
  • Designed and implemented end-to-end revenue operations infrastructure supporting individual deals exceeding $500K—built financial modeling engines, pricing calculators, automated billing systems, and contract management tools enabling company scale from $3.5M to $10M+ annually
  • Reduced engineering bottlenecks across organization by translating complex insurance financial requirements into automated tools—enabled non-technical sales and executive teams to independently deploy sophisticated financial models

CaptiveOne Advisors™

Solutions Engineer | Systems Administrator

Wellington, Florida | 2015 - 2019

Designed and implemented custom CRM platform supporting complete sales lifecycle—defined data architecture, built REST API integrations, configured automation workflows, and created reporting dashboards used across all revenue operations

  • Designed and implemented custom CRM platform supporting complete sales lifecycle—defined data architecture, built REST API integrations, configured automation workflows, and created reporting dashboards used across all revenue operations
  • Drove organization-wide technology adoption by implementing file storage infrastructure and standardized workflows—collaborated with each department to design systems tailored to team needs while maintaining security and compliance requirements
  • Delivered technical training to business teams on advanced automation capabilities—taught Google Apps Script and financial automation enabling self-service for complex data operations
  • Established development standards including CI/CD pipeline management, testing procedures, deployment workflows, and cross-departmental handoff protocols
  • Managed network security, infrastructure planning, and system implementations based on cost-benefit analysis

Technical Skills

Languages & Core

  • JavaScript
  • TypeScript
  • Python
  • HTML5
  • CSS
  • Node.js
  • Java
  • C

Frameworks

  • Svelte 5
  • SvelteKit
  • Svelte 4
  • React.js
  • Capacitor.js
  • TailwindCSS
  • Three.js
  • D3.js

Infrastructure

  • Google Cloud Platform (GCP)
  • Firebase
  • Vercel
  • AWS
  • Nginx
  • PM2
  • Docker

Development Tools

  • Git
  • GitHub
  • CI/CD
  • Vite
  • Claude Code
  • Cursor
  • MCP Servers
  • Agents

Backend & APIs

  • Express.js
  • SvelteKit
  • REST API
  • Firebase
  • Stripe API
  • OAuth
  • JWT

Databases

  • SQL
  • NoSQL
  • SQLite
  • Drizzle ORM
  • Firebase Realtime Database
  • MSSQL
  • SMSS

Creative Tools

  • Figma
  • Adobe Photoshop
  • Adobe Illustrator
  • Affinity Designer
  • Affinity Photo
  • Unity
  • Unreal Engine
  • Blender
  • Autodesk Maya
  • OnShape
  • Autodesk Fusion 360

Methodologies

  • AI Assisted Workflows
  • Context Engineering
  • Iterative Design
  • SDLC management
  • Scrum/Agile
  • System architecture
  • Technical team leadership
  • Remote team coordination

Education

Bachelor of Computer Science

Minors in Business Administration & Mathematics

University of Miami

Miami, FL | Spring 2016

framed image of a university of miami diploma

Get In Touch

I'm always open to discussing new opportunities, interesting projects, or potential collaborations.