Sr. Full‑Stack Software Engineer
- RemoteFull-Stack Software EngineerLocation: General, Fully RemoteJob Type: Contractor | ~15 hours/weekSchedule: FlexibleWe're looking for experienced Full-Stack Software Engineers to support an AI training project focused on software development, debugging, code evaluation, and technical problem-solving.

Key Responsibilities
Develop and debug front-end and back-end applications.
Build features, APIs, services, and data models.
Understand and work across unfamiliar codebases.
Troubleshoot application, API, database, and integration issues.
Review and evaluate AI-generated code for correctness, security, performance, and maintainability.
Translate and adapt software builds between programming languages.
Required SkillsPythonReactJavaScriptJavaNode.jsRustGoTypeScriptStrong full-stack development experienceExperience with APIs, databases, application architecture, and debuggingHiring ProcessSubmit application and screening questions.
Complete a ~30-minute AI interview.
Complete a technical assessment, if required.
Hiring manager review.

📌 Senior Full-Stack Engineer — Hybrid + Equity (Barcelona)
🏢 Lexroom
📍 Barcelona