Software developers
The Senior Engineer Stack
The tools a senior engineer reaches for every day — architecture, code review, testing, DevOps, security, and observability.
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Skills in this stack
Senior Software Architect
DevelopmentDesign system architecture with C4 and sequence diagrams, write Architecture Decision Records, evaluate tech stacks, and guide architectural trade-offs.
Code Reviewer
DevelopmentDeep code review for TypeScript, JavaScript, Python, and Go — anti-pattern detection, security issues, performance bottlenecks, and quality metrics.
PR Review Expert
DevelopmentExpert pull request reviews — code quality, architectural impact, test coverage, security implications, and developer-friendly feedback.
TDD Guide
DevelopmentA step-by-step guide and live coding partner for test-driven development — write failing tests first, then implement just enough code to pass.
Playwright Pro
DevelopmentProduction-grade Playwright test suites — test generation, flaky test diagnosis, migration from Cypress, and E2E coverage strategy.
Senior DevOps Engineer
DevelopmentCI/CD pipeline design, Infrastructure as Code, containerization with Docker and Kubernetes, and deployment automation from a senior DevOps perspective.
CI/CD Pipeline Builder
DevelopmentBuild production CI/CD pipelines for GitHub Actions, GitLab CI, and CircleCI — from lint and test to deploy with environment promotion and rollbacks.
Observability Designer
DevelopmentDesign comprehensive observability for distributed systems — metrics, logs, traces, alerting rules, and dashboards that surface real problems fast.
Senior Security Engineer
DevelopmentThreat modeling, penetration testing guidance, zero-trust architecture design, and security code review from a senior security engineering perspective.
Performance Profiler
DevelopmentProfile and optimize application performance — CPU, memory, network, and database bottlenecks identified and fixed with measurable improvements.
Database Designer
DevelopmentDesign production-grade databases — schema modeling, normalization, indexing strategy, query optimization, and choosing between SQL and NoSQL.
Tech Debt Tracker
DevelopmentScan a codebase for technical debt, categorize by severity and effort, and produce a prioritized remediation roadmap with business impact estimates.
Stack details
- Skills
- 12
- Audience
- Software developers
- License
- Free & open source
Works with
Claude Code skills for software engineers
This stack covers the work that distinguishes senior engineers from mid-level ones — the work that happens around writing code. System design, rigorous code review, test discipline, deployment ownership, security thinking, and performance awareness.
Each skill here encodes a specific process that strong engineers apply consistently. The Senior Architect skill brings structured thinking to system design decisions. PR Review Expert checks pull requests against a defined criteria list rather than whatever feels relevant in the moment. TDD Guide enforces test-first discipline before a line of implementation code gets written.
What these skills do
Architecture and design — Senior Architect helps Claude reason about system boundaries, trade-offs, and long-term maintainability rather than jumping to the first viable solution.
Code review — Code Reviewer and PR Review Expert apply structured review checklists, catching logic errors, edge cases, naming issues, and convention violations in a consistent order.
Testing — TDD Guide and Playwright Pro cover unit-level test discipline and end-to-end browser testing workflows respectively.
Infrastructure — Senior DevOps Engineer and CI/CD Pipeline Builder handle deployment pipeline design and infrastructure decisions.
Reliability — Observability Designer ensures new systems are instrumented properly from the start, not retrofitted after the first outage.
Security — Senior Security Engineer applies threat modeling and security review systematically rather than as an afterthought.
Performance and debt — Performance Profiler and Tech Debt Tracker cover the ongoing maintenance work that keeps codebases healthy over time.
Who this is for
- Senior and staff engineers who want structured support for architectural decisions
- Engineering leads responsible for code quality and team review standards
- Developers who want to close gaps in their workflow outside of feature work
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