New Feature Development
Overview
This playbook covers the workflow for building a new feature from idea to release.
Why It Matters
Features ship better when they are sliced, verified, and released with intention.
Core Concepts
- Clarify the outcome.
- Slice the work.
- Verify the risky paths.
Mental Models
Start with the user journey, then add implementation only as needed.
Best Practices
- Write down success criteria.
- Build the smallest useful version.
- Add tests and rollout checks.
Common Mistakes
- Starting implementation too soon.
- Mixing unrelated scope into the same branch.
- Skipping final verification.
Trade-offs
Smaller features are easier to ship and learn from, but they may require more planning when multiple systems are involved.
Decision Framework
flowchart TD
A[Feature request] --> B[Clarify outcome]
B --> C[Define scope]
C --> D[Slice work]
D --> E[Implement]
E --> F[Verify and release]Examples
- Ship the data flow first, then polish the UI.
Checklists
- Is the outcome clear?
- Is the scope small enough?
- Are tests and release steps ready?
Senior Engineer Notes
Senior engineers keep feature delivery boring and predictable. That usually means smaller slices and earlier verification.