Skill · Testing & Practices
Jest
3 years
Available to hire
Unit and integration testing for JavaScript and TypeScript.
- Testing & Practices
In detail
Established unit and integration testing standards at Northstarz.ai using Jest.
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TypeScript
Primary language for typed, maintainable React and Node codebases.
JavaScript
Strong core JavaScript for browser, Node and real-time interfaces.
HTML5
Semantic, accessible markup as the base of every interface.
CSS3
Responsive layout and styling, from utility classes to custom CSS.
SQL
Comfortable writing queries for relational data.
Java
Working knowledge of Java fundamentals.
Python
Scripting and general-purpose Python for tooling and experiments.
React 19
Daily driver for building production component architectures.
Next.js
App Router, server rendering and API routes for full web products.
Redux Toolkit
Predictable global state for larger React apps.
Zustand
Lightweight store for simple, fast client state.
TanStack Query
Server-state fetching, caching and invalidation.
RxJS
Reactive streams for complex filtering and async flows.
Vite
Fast dev server and build tool for React single-page apps.
Tailwind CSS
Utility-first styling for consistent, responsive UIs.
HTML5 Video
Custom video player for recorded candidate interviews.
WebSockets
Real-time, two-way communication between client and server.
Voice Streaming
Real-time voice streaming for an AI interviewer.
HLS.js
Adaptive HLS playback in the browser.
shadcn/Radix
Accessible, composable UI primitives.
Material UI
Ready-made React components with a consistent design language.
Ant Design
Enterprise-grade React component library.
SCSS
Structured, reusable stylesheets with Sass.
Framer Motion
Declarative animation for React interfaces.
React Flow
Node-based diagrams and workflow editors.
React DnD
Drag-and-drop interactions for React.
Node.js
Server-side JavaScript for APIs and tooling.
Express.js
Minimal, flexible Node web framework for REST APIs.
Nest.js
Structured, modular Node back ends.
MongoDB
Document database for flexible, fast-moving data models.
REST APIs
Clean, validated, well-documented HTTP APIs.
AWS
Cloud hosting and services for production apps.
GCP
Google Cloud for media hosting and integrations.
Docker
Containers for consistent local and deployed environments.
Vercel
Zero-config deployment for Next.js apps.
Git
Branching, code review and clean history as daily habits.
Webpack
Bundling and code-splitting for larger front ends.
Postman
API exploration, debugging and collaboration.
JIRA
Sprint planning and ticket tracking in Agile teams.
OpenAI API
Building AI features on top of OpenAI models.
Algolia
Fast search and filtering for discovery experiences.
React Testing Library
User-centred component tests.
Accessibility
WCAG and ARIA aware interfaces.
Code Reviews
Constructive reviews that raise code quality for the whole team.
Agile/Scrum
Delivering in sprints with clear ownership.
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