The Changelog: Software Development, Open Source · Changelog Media

What actually makes you senior (News)

December 1, 2025·9 min
This episode of Changelog News explores what actually makes someone a senior engineer, with Matias Lima arguing that the core differentiator is the ability to reduce ambiguity rather than technical checklists like architecture or leadership skills. Senior engineers ask crucial questions about problem definition, user pain points, assumptions, and failure scenarios before diving into solutions. The episode features a practical litmus test for seniority based on how developers handle abstract or complex requirements. Tega Brain's browser extension called Slop Evader is highlighted as a tool to avoid AI-generated content by only showing search results from before ChatGPT's November 2022 release. The creator acknowledges this isn't a long-term solution but may become an interesting cultural artifact. Zig programming language is moving from GitHub to Codeberg, with creator Andrew Kelly citing GitHub's declining engineering excellence, buggy JavaScript frameworks, and neglected GitHub Actions as primary reasons. Kelly particularly mourns the loss of GitHub Sponsors revenue and credits Devin Zugal for making GitHub a viable income source for developers before her departure. The episode examines whether AI coding through prompts truly simplifies programming or merely transforms programming complexity into prompt engineering complexity. Matias Aquila suggests that complexity is an inherent mathematical property that cannot be eliminated, only managed, and that serious programming languages are actually efforts to make complex things as simple as possible. A technical segment reveals that SSD data retention is less permanent than commonly believed, with consumer SSDs using TLC or QLC NAND potentially losing data integrity after a year without power. The episode includes sponsor content about Namespace's faster CI runners and concludes with classified ads for various developer tools and services.
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