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IBM·Software Engineer·Technical Phone Screen·Senior

Senior
Jun 2026

Summary

IBM software engineer interview that went deep on open-source background. One big multi-part question covering everything from specific repos and contributions to how you handled community dynamics and backward compatibility. Felt more like a portfolio review than a typical coding screen.

Questions Asked (1)

Q1

Walk me through your open-source contributions in detail: which projects, what you actually did, what had the most impact, how you worked with maintainers and the community, and what you took away from the experience.

Technical Trade-offsAPI & IntegrationsCross-functional Alignment
Author's notes

This question is basically six questions duct-taped together and they want you to cover all of it.

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AI HintsAI Generated

Suggested Approach

Select 2-3 open-source contributions that best demonstrate your technical skills and collaboration, and narrate them using a structured story that highlights the problem, your solution, impact, and community interaction. Emphasize how you navigated trade-offs, integrated with existing APIs, and aligned with maintainers and users to deliver value.

Pro tip: Quantify impact where possible (e.g., 'reduced API latency by 30% for 10k users') and explicitly connect your open-source experience to the skills IBM values, such as cross-functional collaboration and scalable API design.

1. Set the context

Briefly introduce the projects and your role, explaining why you chose them and how they relate to your skills and the job.

2. Detail your contributions

Describe specific tasks you performed, such as code changes, bug fixes, or documentation, and the technical decisions you made.

3. Highlight impact and trade-offs

Explain the measurable outcomes of your work and any trade-offs you considered (e.g., performance vs. maintainability).

4. Show collaboration

Illustrate how you interacted with maintainers and the community, including code reviews, issue discussions, and cross-functional alignment.

5. Reflect on takeaways

Summarize what you learned and how it has influenced your approach to software engineering and teamwork.

Key Points to Mention

  • Specific projects and your role (e.g., core contributor, bug fixer)
  • Technical details: languages, frameworks, APIs, and integration challenges
  • Impact metrics: performance improvements, adoption, or user feedback
  • Trade-offs made: e.g., balancing feature scope with backward compatibility
  • Collaboration: how you worked with maintainers, resolved conflicts, and aligned with community goals
  • Key learnings: technical growth, communication skills, and understanding of open-source dynamics

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.