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Liam W.

Liam W.

Senior Java & Spring Boot Developer | Architecture | CI/CD | DevOps

⭐️ Senior Java developer, architect and DevOps engineer, 15+ years, with a typical 20% to 50% improvement in DORA metrics across 20+ enterprise projects. In 2017 I co-founded Traffic Parrot, a service virtualization product used by Fortune 500 companies, and led its architecture. 🛠️ What I take on - Java and Spring Boot development: features, integrations, upgrades and the tests that keep them honest, in your codebase and your pipeline. - Architecture and API design: reviews, decisions written down and defended, and the delivery metrics that follow. - CI/CD and DevOps: pipelines that catch mistakes early, builds that stay fast, releases that stay boring. - Technical writing: 150+ Baeldung articles edited; published on InfoQ. 🎓 First-class MSci in Mathematics and Computer Science, Imperial College London. 👥 Who it's for: CTOs, engineering leads and founders who want senior hands on a Java codebase, an architecture decision made properly, or a pipeline that holds, without a large consultancy's overhead. 💬 How I work: fixed-scope projects or weekly engagements, remote, UK hours with US overlap. Ask in a message and you get a straight answer about fit, including when I'm not the right call.

🇬🇧London, United Kingdom$450/hr100% JSS5.00 (16)Since Jul 2022
GlobeUpwork

Earnings and projects

MRR
$13

Last 6 months ÷ 6

World#169,837 / 412k
🇬🇧Country#3,672 / 10.7k
Revenue, last 30 days
$0

Last 6 months: $79

Total earnings
$141k

Billed in all: $148k

World#25,663 / 412k
🇬🇧Country#577 / 10.7k
Per project
$10k

$40 in the last 6 months

World#15,837 / 412k
🇬🇧Country#244 / 10.7k
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇬🇧Country#1,969 / 10.7k
Projects in all
14

Across 17 contracts

41% fixed59% hourly
World#168,283 / 412k
🇬🇧Country#4,520 / 10.7k

Earnings, last 30 days

$148kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$144k$146k$148k$150kOct 8Oct 23Nov 7

Skill rankings: Top 27% in Java

Ranked by MRR among everyone on Upwork with the skill.

  1. #15API Framework33 freelancers · 🇬🇧 #2Top 45%
  2. #33Domain-Driven Design105 freelancers · 🇬🇧 #1Top 31%
  3. #140Clean Architecture385 freelancers · 🇬🇧 #1Top 36%
  4. #274Minimum Viable Product546 freelancers · 🇬🇧 #3Top 50%
  5. #443Agile Software Development1,618 freelancers · 🇬🇧 #16Top 27%
  6. #580Spring Boot2,150 freelancers · 🇬🇧 #6Top 27%
  7. #1,027Kubernetes3,351 freelancers · 🇬🇧 #16Top 31%
  8. #1,079AI Consulting2,321 freelancers · 🇬🇧 #56Top 46%