Andrew C.
Solutions Architect / Senior Engineer / Java Engineer - 25 years
Senior backend & cloud engineer with 25 years shipping production systems in Java, Go, and AWS. I've built and operated the kind of services that can't go down: high-traffic streaming at Warner Bros. Discovery (1k–5k req/sec, 24/7/365 uptime), card management and rewards platforms at Capital One, and core banking services for Bank of America via Infosys. What I do best: 🔹 Backend services — Java (1.4 through 25), Spring Boot, Go. Clean APIs, sensible architecture, no over-engineering. 🔹 Cloud & DevOps — AWS, Azure, GCP. Terraform IaC, GitHub Actions, CI/CD pipelines that actually work on the first try. 🔹 Databases — Postgres, Oracle, MySQL, DB2, MongoDB. Schema design, query tuning, migrations. I've fixed slow queries that other people gave up on. 🔹 Microservices & event-driven systems — Kafka, REST, message brokers, service mesh. I've broken monoliths into microservices and lived to tell about it. 🔹 Mobile + cloud — currently wrapping up an iOS/Android/AWS MVP with full telemetry pipeline. How I work: I own the work end to end. You tell me the outcome you need; I figure out the path. I write the code, run the deploys, debug production, and document what I built so the next person isn't lost. I've worked solo and on teams up to a dozen. Comfortable in regulated environments (finance, healthcare) and lean startups alike. I lean heavily on modern AI tooling (Copilot, Claude, Kiro, Gemini, Grok) — I move faster than I did two years ago without cutting corners on quality. Recognition: Open Source Thought Leader (2016) Apache Software Foundation expert; spoke at Apache conferences on microservice architecture and security Top 60 of thousands — IBM Master the Mainframe Competition U.S. Army veteran (Operation Iraqi Freedom) Looking for: long-term contracts where I can own a system, not just a ticket. Available immediately. Background check / drug test ready. Eligible for U.S. secret clearance. If your project needs someone who can read a 5,000-line legacy codebase on Monday and ship a fix on Tuesday — let's talk.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $27k
Billed in all: $83,749$84k
$27k in the last 6 months
Across 25 contracts
Earnings, last 30 days
Skill rankings: #1 in 1 skill of 14
Rarest: top 2% in jQuery, of 8,973. Ranked by MRR among everyone on Upwork with the skill.
- Apache Ant5 freelancers · 🇺🇸 #1Top 20%🇺🇸#1 of 2
- #5Apache Administration120 freelancers · 🇺🇸 #1Top 4%🇺🇸#1 of 15
- #5Apache Tomcat118 freelancers · 🇺🇸 #1Top 4%🇺🇸#1 of 14
- #14AWS Systems Manager290 freelancers · 🇺🇸 #5Top 5%🇺🇸#5 of 43
- #48Amazon EC21,513 freelancers · 🇺🇸 #11Top 3%🇺🇸#11 of 155
- #58Apache Kafka981 freelancers · 🇺🇸 #2Top 6%🇺🇸#2 of 58
- #64Golang2,195 freelancers · 🇺🇸 #9Top 3%🇺🇸#9 of 198
- #79Azure DevOps2,096 freelancers · 🇺🇸 #18Top 4%🇺🇸#18 of 223