Senior Software Engineer – Vanilla JavaScript, WebGL
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Job Description
Senior Software Engineer developing JavaScript-based front-end libraries for 3D simulations at Voovio. Collaborating with international teams and driving the development of innovative software solutions.
Responsibilities:
- Lead the design, development, and optimization of our proprietary JavaScript-based front-end library.
- Collaborate with cross-functional teams to define requirements and deliver new features.
- Write and maintain efficient, clean and reusable code with minimal external dependencies.
- Ensure high performance and compatibility across different browsers and devices.
- Develop interactive 3D experiences using WebGL where applicable.
Requirements:
- University degree in Computer Science, Engineering, Mathematics, or related field
- At least 5 years of professional software development experience
- Deep expertise in vanilla JavaScript, HTML5, and CSS
- Experience building complex browser-based tools or libraries from scratch
- Strong understanding of web technologies, browser behavior, performance, and layout/rendering
- Solid mathematical foundation (e.g., geometry, linear algebra) and familiarity with WebGL is a plus
- Excellent communication and collaboration skills
- English level B2 or higher.
- Must reside in Spain and be legally authorized to work here
Benefits:
- 100% remote work from anywhere in Spain
- Flexible hours (8-hour workday; 7 hours in August)
- Competitive salary
- Optional benefits including restaurant vouchers, Caser Seguros discounts, etc.
- Autonomy to lead technical design on complex systems
- Ongoing learning and personal development support
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