Senior Loop
Practice the rounds that pattern grinding skips: code review, debugging, low-level design, and technical judgment.
The real loop deserved real practice.
Senior backend interviews move quickly past algorithms and into work that looks much closer to the job. Most prep tools stop before that point. Senior Loop was built to cover what comes next.
The exercises are hand-authored from production patterns, so the practice feels concrete: review a flawed PR, debug a failing system, or design under changing constraints.
Grounded feedback, not invented feedback.
Every exercise has a known answer: planted issues, severity, and a hand-authored rubric. AI compares your work against that ground truth, so your score reflects what you caught, what you missed, and the quality of your reasoning.
Hand-authored exercises with explicit ground truth.
Each exercise starts with a concrete production failure mode, an explicit issue list, and a scoring rubric. The grader compares your work against that ground truth instead of inventing an answer after you submit.
The goal is not to memorize patterns. It is to practice explaining tradeoffs, finding consequential failures, and checking your reasoning against a consistent answer key.