Lionel Conforto | Spring Boot Developer

Building Production Systems That Run for Decades, Not Months

20+ years of Java expertise. Systems built in 2012 still running strong today.

UpAndCoding.com

About Me

I've been building Java applications since 2003, with production systems I created in 2012 still running and actively maintained today. I specialize in applications where security, data integrity, and long-term maintainability aren't optional: financial tools, document management, encryption systems, and enterprise data access.

What sets my work apart: I don't just ship products: I maintain them for years, iterating based on real-world use. My personal finance tool processes my actual transactions daily. My database client is something I use every day as a data steward. Everything in my portfolio solves problems I've personally experienced.

Spring Boot Spring Boot Development

Proven Track Record

  • Currently maintaining 6+ production applications, some running continuously since 2012
  • Expertise in security-critical domains: encrypted document archiving, timestamping services, multi-currency financial systems
  • Deep experience with PKI, digital signatures (Bouncy Castle), and compliance requirements

Technical Capabilities

  • Full-stack Spring Boot with JPA/Hibernate across PostgreSQL, Oracle, MySQL, SQL Server
  • RESTful APIs, cloud storage (S3), and modern web UIs (Thymeleaf, Bootstrap)
  • From Notes/Domino (2003) to microservices, I've evolved with the ecosystem while maintaining core engineering principles
Portfolio

View Portfolio: Production Systems & Archived Projects

Current Production Systems:

  • Moneyssimo - Multi-currency personal finance manager (2014-present)
  • Integriter - Timestamp & e-signature service (2023-present)
  • BroadSQL - Cross-database SQL client (2006-present)
  • Desk & Alpha - Headless CMS platform (2012-present)
Collaborative Development

Project Delivery Pragmatic Project Delivery

I bring strategic judgment shaped by 20+ years of shipping real software. I know when to build custom solutions and when established tools like Atlassian JIRA make more sense, because I've made both decisions and learned from them.

My approach: clean, well-documented code that the next developer (or future you) can actually understand. Systems designed to evolve gracefully as requirements change. No over-engineering, no chasing trends. Just solid engineering that stands the test of time.

Available for: Contract development, technical consulting, and architecture review for Spring Boot applications where long-term maintainability matters.