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Thomas A.

Thomas A.

Backend Engineer | Payment Systems, Automation & Anti-Bot Solutions

I build and ship products. Not mockups, not MVPs that sit on a shelf - real platforms with real users and real revenue. What I've built: Creator Marketplace - Built a full content marketplace from scratch. Integrated high-risk payment processing, KYC verification, real-time messaging, content moderation pipelines, discovery algorithms, and admin dashboards. Launched to 70 users in 48 hours from a 900-person waitlist. Demand Intelligence SaaS - B2B tool that scrapes and analyzes freelance market data at scale. Automated data pipelines, AI-powered classification, and subscription billing. Running in production. E-commerce Automation Platform - Grew from 0 to 1,500 paying users. Built real-time inventory monitors, high-concurrency checkout systems handling 1,000+ simultaneous tasks, and anti-detection systems bypassing major CDN security with 95%+ success rates. Platform generated $1M+ annually. What I'm good at: Payment infrastructure for tricky verticals (Stripe, CCBill, webhooks, payouts, chargebacks), scraping systems that don't break, high-concurrency backends in Go and Node, and shipping fast without cutting corners. Stack: Go, TypeScript, React, Next.js, Node.js, Python, PostgreSQL, Redis, Supabase

🇺🇸Coconut Creek, United States$35/hr100% JSS4.81 (2)Since Jan 2024

Earnings and projects

MRR (estimate)
≈$0

An estimate from an earlier read

World#204,728 / 412k
🇺🇸Country#32,646 / 62.1k
Revenue, last 30 days
$0
Total earnings
$9k

Billed in all: $9.5k

World#204,728 / 412k
🇺🇸Country#32,646 / 62.1k
Per project
$4.5k
Projects, last 6 months
0
World#209,850 / 412k
🇺🇸Country#27,405 / 62.1k
Projects in all
2
50% fixed50% hourly
World#328,886 / 412k
🇺🇸Country#47,959 / 62.1k

Earnings, last 30 days

$9.5kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$9.3k$9.4k$9.5k$9.6kOct 9Oct 24Nov 8

No data since Nov 5, 2026.

Skills