Introduction
\nTypeScript has firmly established itself as one of the most in-demand programming languages in web development. Companies from startups to giants like Google and Microsoft are actively seeking developers who master this typed superset of JavaScript. But how can a beginner or a developer from an adjacent stack break into this field? In this article, we will break down a step-by-step plan: from writing a resume to successfully passing an interview. You will learn which skills are truly valued, how to build a portfolio, and what questions are asked at technical interviews.
\n\n1. Key Skills of a TypeScript Developer: What to Learn?
\nBefore writing a resume, you need to clearly understand what an employer expects from a candidate. TypeScript is not just "JavaScript with types." You will need a confident grasp of the following topics:
\n- \n
- TypeScript Basics: types, interfaces, generics, utility types (Partial, Pick, Omit), enum, union types, type guards. \n
- Modern JavaScript (ES6+): async/await, promises, closures, prototypes, destructuring. \n
- Frameworks and Libraries: React, Angular, or Vue (with TypeScript). React + TypeScript is most often required. \n
- State Management: Redux Toolkit, Zustand, MobX (with typing). \n
- Build Tools: Webpack, Vite, Babel. \n
- Testing: Jest, Vitest, React Testing Library. \n
- Basic Backend: Node.js + Express/Nest.js (optional, but a big plus). \n
An example of simple yet illustrative code for a portfolio:
\n// Example of a generic and utility type\ninterface User {\n id: number;\n name: string;\n email: string;\n}\n\ntype UserPreview = Pick<User, 'id' | 'name'>;\n\nfunction getUserPreview<T extends UserPreview>(user: T): string {\n return `User: ${user.name} (ID: ${user.id})`;\n}\n\n// Example with a type guard\nfunction isString(value: unknown): value is string {\n return typeof value === 'string';\n}\n\n\n2. How to Write a TypeScript Developer Resume: Structure and Tips
\nRecruiters spend an average of 6-10 seconds reviewing a resume. Your task is to grab their attention from the first lines. Here is the optimal structure:
\n2.1. Header and Contacts
\nState a clear specialization: "Frontend Developer (TypeScript, React)" or "TypeScript Developer." Avoid vague wording like "Programmer."
\n2.2. Skills
\nList key technologies in a separate block right after the contacts. Use tags or columns. Example:
\n- \n
- Languages: TypeScript, JavaScript (ES6+), HTML5, CSS3 \n
- Frameworks: React, Redux Toolkit, React Router \n
- Tools: Git, Webpack, Vite, Jest, ESLint \n
- Databases: PostgreSQL, MongoDB (basic) \n
2.3. Work Experience (or Projects for Juniors)
\nFor each job/project, describe not just responsibilities but results. Use numbers and specific technologies. Bad: "Wrote code in TypeScript." Good: "Developed a type system for the authorization module, reducing bugs by 30%." For each project, specify the tech stack (e.g., "React 18 + TypeScript + Redux Toolkit").
\n2.4. Education and Courses
\nIf you have no commercial experience, be sure to include pet projects, links to GitHub, and certificates (e.g., from Stepik, HTML Academy, or TypeScript courses).
\nImportant tip: add a "Code" or "Links" section with a link to GitHub containing 2-3 quality projects with typing, tests, and a README.
\n\n3. Interview Preparation: Theory and Practice
\nA TypeScript interview usually consists of three stages: HR screening, a technical interview (algorithms/theory), and live coding. Let's break down the key