Qualifications: Advanced professional written proficiency in English3–7 years of professional software engineering experienceStrong proficiency in Python and Java Script/Type Script;
working knowledge of Java, C#, or GoBackend or full‑stack development experience in production systemsExperience with testing frameworks (e.G., pytest, Jest, JUnit, x Unit, Go testing)Proven ability to debug and navigate large, multi‑file codebasesExperience with code reviews, refactoring, and production migrations Engagement:Part-time, project-based expert evaluation workWork Type:RemoteContributors will design and evaluate realistic software engineering tasks, including bug resolution, feature implementation, refactoring/migration, and test generation. Work includes both creating complex coding scenarios and reviewing peer submissions for quality and accuracy.This is a project-based consultant role. Consultants will be paid on a per-project basis;
hourly rates are estimates based on anticipated completion time.



Consultants control their own schedule, provide their own tools, and may simultaneously provide services to other vendors/employers (subject to those vendors’ allowances).Responsibilities:Contributors will: Design and implement multi-file coding tasks across bug fixing, feature development, refactoring, and testingWrite clear natural-language specifications and reference implementationsDevelop and extend unit and integration test suitesReview peer-generated tasks for correctness, clarity, and realismIdentify edge cases, ambiguities, and potential failure modesEnsure alignment between specifications, code, and expected outputs Expected Outcomes: High-quality, production-realistic coding tasksComplete and correct reference implementationsRobust test coverage and validation artifactsStructured, actionable peer review feedback #J-18808-Ljbffr

📌 Backend Developer (Spain) (España)
🏢 Anyone AI
📍 España