Frontend Developer with Angular at Papernest, simplifying subscription management for energy products. Join a dedicated team focused on innovation and user experience in Barcelona.
About the role
- Senior Front-End Engineer designing and building intelligent user experiences for AI workflows at Sirona Medical. Collaborating with cross-functional teams to improve clinical outcomes through technology.
Responsibilities
- Design and implement modern, scalable front-end systems in React, TypeScript, and GraphQL
- Build SDKs and reusable component libraries that bridge AI systems and product surfaces
- Prototype intelligent, data-rich workflows that blend human interaction with AI assistance
- Work across the stack to connect frontend features to Python/FastAPI backends and APIs
- Collaborate with AI and backend teams to design clean interfaces between systems
- Create UI patterns that visualize AI reasoning, feedback, and real-time collaboration
- Shape engineering best practices for modularity, observability, and performance
- Mentor other engineers and influence technical direction across Sirona’s product stack
Requirements
- 8+ years of professional software engineering experience, with deep front-end expertise and full-stack fluency
- Expertise in React, TypeScript, and GraphQL, with a strong grasp of front-end architecture, state management, and performance optimization
- Experience building and maintaining internal SDKs, reusable component libraries, or system abstractions that connect front-end and backend or AI services
- Fluency with API design and integration, including REST and GraphQL APIs, and working knowledge of backend frameworks such as Python/FastAPI
- Proven experience building or integrating AI-powered product experiences — whether through traditional ML models or newer technologies such as LLMs and agentic workflows
- Experience designing interfaces that make AI outputs actionable, explainable, and trustworthy
- Strong product intuition and UX sensitivity. You build tools that feel elegant, fast, and obvious to users
- Experience working in cross-functional environments with designers, backend engineers, and AI researchers
- Comfortable moving between prototype and production. You can experiment quickly but know how to ship reliable, maintainable code
- Excellent written and verbal communication skills. You can clearly articulate technical and product tradeoffs.
Benefits
- Stock options
- Medical, dental, and vision insurance
- Flexible time off
- Maternity and paternity leave
- 401(k) with matching
- MacBook Pro
- Support for conferences and continuing education
- Opportunity to work on cutting-edge AI in a mission-driven, high-impact domain
Job title
Job type
Experience level
Salary
Degree requirement
Tech skills
Location requirements
Senior Software Engineer developing user interfaces for embedded banking features at Swan. Collaborating closely with teams and taking ownership of front - end projects.
Outside Sales Representative conducting in - home sales presentations for home improvement products and enhancing customer experiences at Window Nation.
Senior Frontend Engineer at Lodgify enhancing their Frontend application built with React. Ownership of features from brainstorming to launch while collaborating with users to identify needs.
Senior Frontend Software Engineer at Zylo focusing on web application development and team mentorship. Responsible for leading technical initiatives and improving software quality standards.
Frontend Engineer with expertise in finance, developing innovative software solutions at Zanders. Collaborating in a hybrid environment with a talented engineering team.
Full Stack Software Engineer utilizing React and .Net at Vista cinema technology company. Collaborating on design, development, and implementation of new applications as part of a dynamic team.
Fullstack Developer focused on optimizing documentation and operational processes via AI for environmental services client. Seeking strong Frontend experience to build modern user - friendly interfaces.
Senior React Developer designing and building scalable frontend solutions for ADAVANSYS. Collaborating with cross - functional teams to deliver high - performance user interfaces.
Software Engineer with front - end focus at Pearson shaping user - focused web experiences. Collaborating with cross - functional teams to deliver high - quality applications using React and modern JavaScript.