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My Senior Dev - AI-Powered Code Reviews Built for Power Users

#devchallenge #muxchallenge #showandtell #video

DEV's Worldwide Show and Tell Challenge Submission 🎥

This is a submission for the https://dev.to/challenges/mux

What I Built

My Senior Dev is a webapp App that provides deep, multi-perspective
code reviews using specialized AI agents. It optimizes for efficiency, thoroughness and insight

  • designed specifically for power users who need comprehensive analysis of critical code changes.

It uses three specialized AI agents working in concert:

  • Claude for security vulnerability analysis
  • GPT-4 for code quality and architectural review
  • GPT-4 synthesis for combining perspectives into actionable insights

Instead of surface-level suggestions, you get the kind of thorough,
multi-angle code review that senior developers provide:

  • Traditional tools: 
"Consider using const instead of let on line 42"
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  • My Senior Dev: 
"Security: This endpoint lacks rate limiting (DoS 
risk) 
# Code Quality: Database transaction isn't properly scoped (race 
conditions)  
# Architecture: Violates repository pattern from auth-service.ts
# Recommendation: Add rate limiting, wrap in transaction, move to 
UserRepository"
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My Pitch Video

Demo

The Story Behind It

As a senior developer, I spent hours on thorough reviews for complex
PRs - checking security, architecture, performance, and
maintainability. While AI tools were getting good at surface
suggestions, none provided the multi-perspective, comprehensive
analysis that complex changes actually need.

My Senior Dev fills this gap. When you have a critical database
migration, security-sensitive auth flow, or complex algorithm, you want
more than "use const instead of let." You want to be able to chat with an AI persona
on a file by file, line by line basis.

Technical Highlights

Multi-Agent Architecture: Specialized agents with specific expertise
rather than one general-purpose AI.

Configurable Depth: Teams can tune intensity - staff_engineer for deep
architectural review, junior_engineer for standard checks,
product_manager for business impact.

GitHub-Native: Seamless webhook integration, bi-directional comment
sync, three feedback types (line-specific, file-level, PR-wide).

Power User Features: Chat interface with agents, historical trend
analysis, custom per-repo instructions, selective triggering for
critical PRs only.

Tech Stack:

  • Backend: Node.js, TypeScript, Hono, Drizzle ORM, PostgreSQL
  • Frontend: React, TypeScript, Tailwind CSS
  • AI: Anthropic API (Claude), OpenAI API (GPT-4)
  • Infrastructure: GitHub Actions, Pulumi IaC

What Makes It Unique

It is intended to work with other AI review tools but is optimized for the human
to review, making it fast and fun to review code. With all of the AI code being produced
engineers time will be spent more and more reviewing AI produced code. The tools
to review code should be optimized for a human to be able to understand the code
and leverage AI in a complimentary way to assist in that understanding.

In addition the interface should make it dead simple and fast to go through
the files of a pull request.

The future isn't replacing human judgment - it's augmenting
expert-level analysis and making senior engineer insights consistently
available for every critical code change.

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