LFAuctionHouse
Cross-server marketplace, rewritten from 2,800 lines of legacy JS into a clean Java system — and the foundation for two pieces of network-wide infrastructure.
PaperCustom ORMRedis
Lucas Frederico
AWS CertifiedBuilding Minecraft servers that hold 1,500 concurrent players without breaking a sweat.
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Peak players
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Plugins shipped
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Servers founded
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Years coding
About
A decade of Java — half of it on Minecraft.
I started with my own Minecraft servers a decade ago, learning Java the hard way — fixing my own crashes at 2am while 200 players waited.
Today I do it professionally. Five years deep into Spigot/Paper/Purpur, building production-grade plugins for LoverCraft, a network running up to 1,500 concurrent players. Before that, eight years shipping enterprise Java/Angular systems for Kinross Gold, Grendene, and Olfar.
- NMS-deep performance and remapping work
- Cross-server Redis architectures (pub/sub, distributed locks, runner election)
- Anti-dupe systems and packet interception via ProtocolLib
- World-per-island engines with SlimeWorldManager + FAWE
- Production debugging at 2am — the kind that only comes from running it live
// what I optimize for
throughput: "main-thread safe",
consistency: "network-wide",
recovery: "< 60s on incident",
audit: "every coin movement logged"
Featured projects
Three plugins I'd put on a résumé.
LFSkyBlockCore
The core gameplay system powering the network's SkyBlock gamemode — world-per-island, real-time cross-server sync, and a full plugin ecosystem on top.
PurpurNMSSlimeWorldManager
LFSBMines
Private mine system with custom mobs, animated 3D models, live block regeneration, and per-player stat tracking — fully integrated into the SkyBlock core.
PaperModelEngineMythicMobs
All projects
Plus seven more, shipped to production.
LFPlayerProfile
Network-wide player profile with stats, emotes, badges, and LuckPerms-driven roles.
PurpurLuckPermsMySQL
LFMail
Cross-server mail system for staff broadcasts, reward delivery, and player-to-player messages with attachments.
PaperMySQLRedis
LFGifts
Player-to-player gifting system with full send/receive history and per-server config.
PaperMySQLRedis
LFRTP
Random teleport with custom biome zones and full Bedrock support via Floodgate + Cumulus forms.
PaperFloodgateRedis
LFSeasonalResetVault
Cross-season vault that persists items through resets, with capacity upgrades and item banlists.
SpigotMySQLDecentHolograms
LFPlaytime
Tracks player playtime across servers with milestone rewards, leaderboards, and AFK detection.
PaperMySQLPlaceholderAPI
LFLeaderboards
Pluggable leaderboard engine with both Hologram and Citizens NPC rendering, plus a PlaceholderAPI expansion.
PaperCitizensPlaceholderAPI
LFReferral
New-player referral system with reward queueing, async reminders, and reference-way tracking.
PaperMySQLJoda-Time
LFCustomChests
Auto-selling chests with item whitelists, trusted-player ACLs, and tiered upgrades. Integrates with the network shop and AuctionHouse.
PaperMySQLShop API
SkyBlock Ore Generator
Custom ore-generation engine for the SkyBlock gamemode — tiered generators, weighted block tables, and per-island upgrades.
PurpurNMSMySQL
Enterprise experience
Eight years of enterprise Java. Five of plugins.
LoverCraft LLC — Senior Developer · Freelance
Architecture, ideation, plugin and mod development for a Minecraft network running up to 1,500 concurrent players. Lead the technical decisions around Ansible and Vagrant for infra. Production support and emergency response.
Stack: Java · Spigot/Paper/Purpur · NMS · MySQL · MariaDB · MongoDB · Redis · Docker · Ansible · Grafana · GitHub · SonarQube
Senior Sistemas — FullStack Developer II · Software Factory
Full-stack development for major enterprise clients. Tech leadership on a fixed team, rotating into other squads as needed for surge work and senior technical decisions.
- Kinross Gold (international gold mining) — Third-Party Management system with HCM/ERP integration; monthly billing controls; Budget Management system for corporate budget oversight
- Olfar — Lab Management system (sample tracking, label printing)
- Grendene — Workforce Allocation system
- Also: Flutter mobile applications.
Stack: Java · Spring Boot · Angular · Flutter · Docker · Oracle · MySQL · SQL Server · Maven · GitLab CI/CD · SonarQube · JIRA
Senior Sistemas — FullStack Developer I · Solution Factory
Full-stack development for legacy and new clients.
Stack: Java · Angular · Docker · MySQL · SQL Server · Maven · GitLab
Senior Sistemas — IT Intern · Software Factory
Full-stack on new features and bug fixes — Spring Boot, Angular, Git, Maven. Joined the "Equipe de Ouro" recognition team.
Stack
The full toolbox.
Languages
Java10 years
TypeScript5 years
JavaScript7 yearsMinecraft Stack
Spigot8 years
Paper8 years
Purpur8 yearsNMS8 yearsProtocolLib8 yearsFastAsyncWorldEdit7 yearsSlimeWorldManager3 yearsMythicMobs3 yearsModelEngine3 yearsPlaceholderAPI5 yearsLuckPerms5 years
Floodgate3 yearsCumulus2 years
Adventure (Kyori)3 yearsBackend
Spring Boot6 years
Spring Framework6 years
Maven7 years
Gradle3 yearsREST Web ServicesLombok7 yearsAI Agents
Claude Code8 monthsDatabases
MySQL7 years
MariaDB6 years
PostgreSQL5 years
Redis5 yearsMessaging
Redis Pub/Sub5 yearsCloud / Deploy
Railway1 yearIDEs
IntelliJ IDEA Ultimate7 years
WebStorm7 years
DBeaver7 years
VS Code10 years
Eclipse2 yearsDevOps / Tooling
Docker7 years
Git10 years
GitHub10 years
Grafana5 years
ClickUp3 yearsVirtual Machines5 yearsAlso worked withpast · occasional · context-driven
Dart2 yearsLibsDisguisesDecentHologramsCitizens
Angular5 years
Flutter2 years
Electron1 year
LangGraph3 monthsAgno3 months
n8n6 months
Make1 year
MongoDB
Oracle2 years
SQL Server5 years
RabbitMQ1 year
AWS3 years
DataGrip5 years
Ansible1 year
Vagrant1 year
GitLab CI/CD5 years
SonarQube5 years
JIRA5 years
Milanote1 year