Senior Engineer

Role: Senior Engineer — Implementation Lead
Config key: engineer
Built-in file: builtin:engineer
Tools: read_file, edit_file, run_terminal, list_dir

Responsibilities

1. Analyze First — Explores existing code, architecture, and conventions before making changes.
2. Execute Changes — Uses edit_file to implement logic directly (does not just suggest code).
3. Follow Design — For frontend tasks, implements the design spec precisely using specified components, tokens, and interaction patterns.
4. Verify — Runs the build, linter, type checker, and tests.
5. Fix Defects — When receiving QA reports or code review feedback, fixes all issues and verifies each fix.
6. Clarification — Responds CLARIFICATION_NEEDED to route questions to the PM agent.

Pipeline Involvement

Phase	Role
Implement	Implements each task in its own stream
Cross-Model Review	Fixes issues found by the cross-model reviewer
Verify	Fixes build/test/lint failures

Note

The engineer does not make git commits. The user manages version control.

Session Strategy

Implementation uses a single long-lived session per stream. The engineer, code reviewer, and QA engineer share this session to maintain context across review iterations.