Web
Development
Technical
Skills
PRO FICIENCY
SCALE
EXPERT
A D VA NCED
PROFICIENT
FA M ILIA R
Frontend
&
UI
1 0
SKILLS
HTML
5
semantics
&
accessible
forms
EXPERT
CSS
Grid
&
Flexbox
layout
EXPERT
Responsive
&
fluid
typography
EXPERT
Container
queries
&
intrinsic
layout
A D VA NCED
Tailwind
CSS
A D VA NCED
Sass
&
PostCSS
pipelines
A D VA NCED
Component
design
systems
A D VA NCED
CSS
-
in
-
JS
(
styled
-
components
,
Emotion
)
PROFICIENT
Motion
&
interaction
(
Framer
Motion
,
GSAP
,
WAAPI
)
PROFICIENT
Web
Components
&
Shadow
DOM
FA M ILIA R
JavaScript
&
TypeScript
8
SKILLS
TypeScript
(
generics
,
conditional
&
mapped
types
)
EXPERT
Modern
ECMAScript
(
ES
2022+)
EXPERT
Async
patterns
,
Promises
&
streams
EXPERT
React
18 (
hooks
,
Suspense
,
Server
Components
)
EXPERT
Next
.
js
App
Router
&
server
rendering
A D VA NCED
State
management
(
Redux
Toolkit
,
Zustand
,
TanStack
Query
)
A D VA NCED
Vue
3 &
Nuxt
PROFICIENT
Svelte
&
SvelteKit
FA M ILIA R
Backend
&
APIs
9
SKILLS
Node
.
js
runtime
&
npm
ecosystem
EXPERT
REST
API
design
&
OpenAPI
3.1
specifications
EXPERT
Express
&
Fastify
A D VA NCED
GraphQL
schemas
,
resolvers
&
federation
A D VA NCED
Python
services
(
FastAPI
,
Django
)
A D VA NCED
tRPC
typed
end
-
to
-
end
APIs
PROFICIENT
WebSockets
&
Server
-
Sent
Events
PROFICIENT
Go
services
&
CLI
tooling
PROFICIENT
Queues
&
event
streaming
(
Kafka
,
RabbitMQ
)
PROFICIENT
1 / 3
Databases
&
Data
Modeling
8
SKILLS
PostgreSQL
(
CTEs
,
window
functions
,
indexing
)
EXPERT
Query
optimization
&
EXPLAIN
analysis
A D VA NCED
MySQL
&
MariaDB
A D VA NCED
MongoDB
&
document
modeling
A D VA NCED
Redis
caching
&
pub
/
sub
A D VA NCED
Prisma
&
Drizzle
ORM
A D VA NCED
Relational
modeling
&
schema
migrations
A D VA NCED
Elasticsearch
indexing
&
search
relevance
PROFICIENT
Cloud
,
DevOps
&
Infrastructure
1 0
SKILLS
AWS
(
EC
2,
S
3,
Lambda
,
RDS
,
CloudFront
)
A D VA NCED
Docker
&
multi
-
stage
image
builds
A D VA NCED
GitHub
Actions
CI
/
CD
pipelines
A D VA NCED
Nginx
&
reverse
proxy
configuration
A D VA NCED
Linux
server
administration
&
shell
scripting
A D VA NCED
Serverless
&
edge
functions
A D VA NCED
Vercel
,
Netlify
&
Cloudflare
Workers
A D VA NCED
Kubernetes
&
Helm
PROFICIENT
Terraform
infrastructure
as
code
PROFICIENT
Observability
(
OpenTelemetry
,
Grafana
,
Sentry
)
PROFICIENT
Testing
&
Quality
7
SKILLS
Vitest
&
Jest
unit
testing
A D VA NCED
React
Testing
Library
A D VA NCED
Playwright
end
-
to
-
end
testing
A D VA NCED
Cypress
component
testing
PROFICIENT
API
contract
&
integration
testing
(
Supertest
,
Pact
)
PROFICIENT
Test
strategy
&
the
test
pyramid
A D VA NCED
ESLint
,
Prettier
&
Biome
EXPERT
Security
&
Authentication
8
SKILLS
OAuth
2.0 &
OpenID
Connect
A D VA NCED
Session
,
JWT
&
refresh
-
token
rotation
A D VA NCED
OWASP
Top
10
mitigation
A D VA NCED
XSS
,
CSRF
&
Content
Security
Policy
A D VA NCED
TLS
,
HSTS
&
certificate
automation
A D VA NCED
Role
-
and
attribute
-
based
access
control
PROFICIENT
Secrets
management
(
Vault
,
AWS
Secrets
Manager
)
PROFICIENT
Dependency
scanning
(
Dependabot
,
Snyk
)
PROFICIENT
2 / 3
Performance
&
Accessibility
7
SKILLS
Core
Web
Vitals
(
LCP
,
INP
,
CLS
)
optimization
A D VA NCED
Lighthouse
&
WebPageTest
auditing
A D VA NCED
Bundle
analysis
&
code
splitting
A D VA NCED
Caching
strategy
(
CDN
,
HTTP
,
stale
-
while
-
revalidate
)
A D VA NCED
Responsive
images
(
AVIF
,
WebP
,
srcset
)
A D VA NCED
WCAG
2.2
AA
conformance
A D VA NCED
Screen
reader
&
keyboard
testing
PROFICIENT
Tooling
,
Architecture
&
Collaboration
1 0
SKILLS
Git
workflows
(
trunk
-
based
,
GitHub
Flow
)
EXPERT
Code
review
&
mentoring
EXPERT
Monorepos
(
Turborepo
,
pnpm
workspaces
)
A D VA NCED
Vite
,
Webpack
&
esbuild
A D VA NCED
Storybook
&
design
handoff
(
Figma
tokens
)
A D VA NCED
System
design
&
service
boundaries
A D VA NCED
Caching
&
CDN
architecture
A D VA NCED
Technical
documentation
(
ADRs
,
RFCs
)
A D VA NCED
Agile
delivery
&
sprint
planning
A D VA NCED
Event
-
driven
&
microservice
architecture
PROFICIENT
3 / 3
