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OneSource Consulting

Frontend Developer

OneSource Consulting
Netherlands · Full-time · Mid-Senior

Role Overview

Key Responsibilities

  • Develop and maintain modern front-end applications using Angular (14–17+).
  • Convert wireframes and UX specifications into pixel-perfect, responsive UI.
  • Design robust front-end architectures using SOLID principles and best practices.
  • Integrate REST APIs and work with OpenAPI/Swagger specifications.
  • Write clean, reusable, documented code using Typescript and Angular design patterns.
  • Implement unit tests using Jest and ensure high code coverage.
  • Participate in code reviews, provide feedback, and maintain coding standards.
  • Work closely with Technical Lead, Back-end Developers, and Product Team.
  • Contribute ideas to the design and functionality of the Data Accounting system.
  • Be present on-site in Utrecht to ensure strong internal collaboration.


Mandatory Requirements (must meet to qualify)

  • HBO working and thinking level (equivalent to Bachelor’s level).
  • 3+ years of experience as a Front-End Developer in a complex, professional environment.
  • 3+ years of experience with Angular 14+ (Version)and Typescript.
  • Proven experience with unit testing using Jest.
  • Experience designing front-end architecture.
  • Experience with modern front-end tooling:
  • JavaScript (ES5+),
  • HTML5
  • Bootstrap
  • NodeJS,
  • NPM,
  • SPA development
  • Webpack/systemjs module loaders
  • RxJS,
  • Angular Forms
  • Responsive design (Flexbox, Grid)
  • Knowledge of RESTful APIs
  • OpenAPI/Swagger
  • UX/UI affinity.

Desired Competencies (Preferred)

  • Strong communication and proactive problem-solving attitude.
  • Ability to adapt to evolving requirements and decisions.
  • Passion for clean code, architecture, and building quality software.
  • Enjoy working collaboratively in a structured, mission-driven environment.

Key Skills

Ranked by relevance

angular typescript responsive wireframes ux
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Posted
Nov 14, 2025
Type
Full-time
Level
Mid-Senior
Location
Utrecht

Industries

Information Technology & Services

Categories

Engineering

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