Tell me about an achievement you are most proud of.

This question gives you a chance to highlight your impact, problem-solving ability, and teamwork. A great way to answer is to follow the structure:
Situation → Action → Result.

Below are two sample answers — one focused on technical leadership and the other on collaboration and product value.

One of the achievements I'm most proud of is leading the migration of our backend system from a monolith to a microservices architecture at my previous company. It started as a small initiative to improve deployment times, but I proposed a broader approach and ended up coordinating the entire project.

I was responsible for designing the new architecture, working with the DevOps team to set up CI/CD pipelines, and helping other developers refactor their services. As a result, our deployment time was reduced by over 60%, and the number of production incidents dropped significantly.

This experience showed me the value of taking ownership, communicating across teams, and thinking about long-term scalability — all of which I want to bring to my next role.

• monolith to microservices: restructuring a single large codebase into smaller, independent services
• deployment time: how long it takes to release new code to production
• CI/CD pipelines: automated systems for testing and deploying code continuously
• production incidents: problems or failures that happen in the live product environment
• take ownership: actively take responsibility for solving problems and driving outcomes

The achievement I’m most proud of is launching a company-wide internal tool that improved communication between customer support and the engineering team.

As part of a cross-functional task force, I noticed that bug reports were often unclear or delayed. I proposed creating a lightweight issue tracker integrated with Slack. I built the MVP, gathered feedback from both teams, and iterated quickly.

After launch, bug triage time dropped by 50%, and engineers reported fewer context-switching disruptions. What made me proud wasn’t just the technical success, but how it improved the relationship between two key teams.

• internal tool: software created for use within the company to improve internal workflows
• cross-functional task force: a temporary team made up of members from different departments
• issue tracker: a system for submitting and managing bugs or feature requests
• bug triage: reviewing and prioritizing bug reports
• context-switching disruptions: productivity loss caused by jumping between unrelated tasks