Frontend Engineer – Vue/TypeScript, End-to-End Ownership

Sipwise - an Alcatel-Lucent Company; Wien; On-site; EUR 52,000 - 74,000; Full time

Job summary

Sipwise, an Alcatel-Lucent Company, is seeking an experienced mid-level JavaScript Developer to build and enhance our frontend products. You’ll own features end-to-end—from requirements to release—collaborating with the frontend lead, backend team, and QA to tackle complex problems and make informed technical decisions.

You will primarily build and maintain frontend features using Vue, write tests, review code, and contribute to architectural discussions while ensuring high quality and reliable

Qualifications

• Professional experience building and maintaining production frontend applications.
• Experience owning and delivering frontend features beyond simply implementing predefined tickets.
• Proficiency with Git and version control best practices.
• Strong core JavaScript fundamentals and sound engineering judgment.
• Solid understanding of frontend architecture and the ability to make sensible technical decisions within your area of ownership.
• Solid working knowledge of RESTful APIs and asynchronous data handling.
• Experience with testing frameworks (Jest, Cypress etc.) and the ability to take responsibility for the testing and quality of your own work.
• Demonstrated ability to navigate ambiguous requests, ask the right technical questions, and drive projects forward with autonomy.
• Clear, concise communication skills across both technical and non-technical audiences.
• Self-awareness, paired with a commitment to continuous learning.
• Experience with Vue or any other modern frontend framework (React, Angular, etc.).
• Experience with TypeScript.
• Experience with Docker, Bash scripting, or other command-line tooling.

Responsibilities

• Build and Maintain: Deliver reliable, high-quality frontend features and fix bugs across our applications. You'll primarily work with Vue.
• Maintain Engineering Standards: Write clean, maintainable code and add appropriate automated tests for the behaviour you're introducing or changing. Participate in constructive code reviews and contribute to architectural and technical discussions.
• Own Your Work End-to-End: Take features and fixes through implementation, testing, and release, asking the right questions and investigating root causes to determine what actually needs to be done. Communicate early when you hit risks, uncertainty, or decisions that need wider input.
• Refine Requirements: Review specs with a constructive eye, identifying missing information, technical constraints, gaps, edge cases, and opportunities for smoother user flows before writing code.
• Collaborate Across Boundaries: Work with the backend team to align on shared best practices around API integration and data flow.

Skills

JavaScript fundamentals

Frontend architecture

RESTful APIs

Testing frameworks (Jest, Cypress)

Communication

Autonomy

Problem solving

Vue or frontend framework experience

TypeScript

Technical decision making

Tools

Git

Vue.js

Docker

Bash scripting

Command-line tooling

Job description

Sipwise, an Alcatel-Lucent Company, is seeking an experienced mid-level JavaScript Developer to build and enhance our frontend products. You’ll own features end-to-end—from requirements to release—collaborating with the frontend lead, backend team, and QA to tackle complex problems and make informed technical decisions.

You will primarily build and maintain frontend features using Vue, write tests, review code, and contribute to architectural discussions while ensuring high quality and reliable