SRE Background: Development vs. Stability Focus and Your Most Memorable Project

In a hiring-manager round for a senior site reliability engineering (SRE) role, you are asked two background questions: whether your project work has leaned more toward development or more toward stability, and which project you remember most. Answer both so they give a consistent picture of the engineer you are. ### Constraints and Clarifications - Assume the interviewer may ask no follow-up questions. Each answer must stand on its own, with the scope, your role, and the outcome stated without prompting. - "Stability" here means keeping production services reliable: availability, latency, safe changes, incident response, and capacity. - Use your real experience. If your background leans toward development, say so honestly and explain how it prepares you for reliability ownership. ### Clarifying Questions - Should the most memorable project be reliability-focused, or may it be any project? - Does the interviewer want technical depth on the project, or mainly the overall story and your role? ### Part 1 — Development Versus Stability In the projects you have worked on, was your work more development-oriented or more stability-oriented? ```hint Describe the actual mix Describe the split in a recent role with concrete responsibilities, and show where your development work served reliability, if it did. ``` #### What This Part Should Cover - An honest description of the mix, with examples of each kind of work. - Development work that improved reliability, such as tooling, automation, or resilience features. - Why this background fits a senior SRE role, and any gap you are addressing. ### Part 2 — Most Memorable Project Tell me about the project that left the deepest impression on you. ```hint Choose a project that shows your judgment Choose a project where your own decisions changed a measurable reliability or engineering outcome, and be ready to say why it stays with you. ``` #### What This Part Should Cover - The situation and stakes, with the system and its scale described without confidential details. - Your specific actions and technical decisions, separated from the team's. - A measurable result, plus what you would do differently. ### What a Strong Answer Covers - A consistent story across both answers: the mix described in Part 1 is shown in the project chosen for Part 2. - Ownership at senior scope: setting direction, influencing other teams, and making reliability trade-offs, not only carrying out tasks. - Concrete, measurable outcomes such as fewer incidents, faster recovery, fewer paging alerts, or an improved service level. - Concise delivery that does not depend on the interviewer drawing out details. ### Follow-up Questions 1. If most of your experience is feature development, what evidence shows you can own production reliability? 2. In your memorable project, what trade-off between delivery speed and reliability did you have to negotiate, and with whom? 3. What did that project change about how you work today?