Rails · MongoDB · GraphQL
Digitalize: from backend foundation to technical leadership
Foundation design and technical lead
Different organizations needed to move internal processes out of manual steps without a new system for every case.
00 Work
Work and engineering decisions
Each case covers the context, the problem, what I was responsible for, the decision made and the documented outcome. Technical detail goes as far as possible without exposing client code or data.
The platforms were built in my work through Oxeanbits, for the company's clients. They are not direct personal contracts with each organization mentioned.
01 Group
Platforms in production
Web systems built and evolved as part of a team, in my work through Oxeanbits.
Rails 8 · React · TypeScript · ClickHouse
Status Survey: hierarchical surveys, from form to data lake
Leading full-stack contributor on a three-person team
A multi-level organization needed to distribute surveys, control access and consolidate data in more than one language.
Rails · MySQL · React
DPMS: sustained quality on an international industrial platform
Central role on the team
A platform with many business rules had to keep evolving without breaking what already worked.
02 Group
Technical depth
Problems where the solution depends on language design, parsing and cross-platform integration.
C++ · WebAssembly · Compilers
Parsec: one formula language shared across platforms
Library development; individual WebAssembly version
When each platform interprets the same formulas on its own, the same calculation can produce different results.
Ruby · Rails · Reusable libraries
Ruby libraries: reusable solutions to backend problems
Author of three gems and coauthor of two
Formulas, associations and record hierarchies need solutions that can be understood and reused.
Rust · Git worktrees · Automation
Wisetree: Rust tooling for organizing development work
Creation and development
Working across branches requires preparing environments and tracking changes, dependencies and pull requests in different directories.
03 Group
Engineering decisions
Choices about readability, context and AI use that I carry from one project to the next.
React · JavaScript · jQuery
React modernization: asynchronous flows you can read top to bottom
Team contribution
Legacy jQuery screens made it costly to reuse behavior and evolve the interface.
Rails · React · AI-assisted development
Relevant context: Rails and React in one repository
Proposal and team buy-in
With separate repositories, the AI assistant only saw one side of the contract between interface and API.
Instructions · Skills · Verification
A personal harness: AI with instructions, context and verification
Personal build
AI produces code faster than a team can understand, review and maintain it.
04 Notes
Side projects and talks
Smaller public work that complements the cases.
victorcorcos/components-hierarchy (external site)
A tool built on madge to inspect React JSX component relationships. It helps understand dependencies before changing an interface.
victorcorcos/pom-converter (external site)
A Python macOS port of a song converter, based on analysis of the original Windows program. An example of investigation and interoperability.
victorcorcos/clean-code (external site)
Principles, examples and signs of code that is hard to maintain. It grew out of the talks and applies to AI-generated code too.
victorcorcos/skills (external site)
Reusable AI agent skills for Claude Code, Codex CLI and OpenCode: staged planning, review, BDD testing and bug investigation.
victorcorcos/winning-investments (external site)
A personal Python project that applies strategies described by well-known investors to the Brazilian stock market. A programming exercise, not financial advice.
2021 · Why Clean Code and BDD matter in automated tests
Computing Week (SEMCOMP), UFBA · representing Oxeanbits. Why BDD matters in automated testing, with practical examples of tests that describe behavior.
2024 · How to clean your code: Clean Code principles
Computing Week (SEMCOMP), UFBA · representing Oxeanbits. Clean Code principles presented through code examples.
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