Senior Frontend Engineer - Desktop Applications

About INFINNI

INFINNI is the infrastructure behind the creator economy. We're already the leading CRM in our category, with thousands of creators and creator businesses running their operations on our platform. Now we're building the next layer of products, AI-powered tools, big-data and infrastructure purpose-built for creators.

We're a global team of 180+ builders at the rare inflection point where a category leader becomes a category-defining platform. The decisions we make in the next 18 months will shape an industry.

About the Role

We are looking for a hands-on Senior Frontend Engineer to help build and evolve our cross-platform desktop applications.

This role goes far beyond traditional frontend development. In addition to building high-quality user interfaces, you will work deeply with Electron, desktop application architecture, networking, observability, and system integration to deliver reliable, high-performance desktop experiences.

The ideal candidate combines strong frontend expertise with solid engineering fundamentals, enjoys solving complex technical challenges, takes ownership of end-to-end delivery, and consistently delivers production-ready solutions. We also value engineers who actively embrace AI-powered tools and workflows to improve development efficiency, software quality, and engineering productivity.

What You’ll Do

Desktop Application Engineering

• Design, develop, and maintain core modules of our cross-platform desktop application built with Electron
• Build reliable, high-performance desktop experiences with a strong focus on stability, maintainability, and user experience
• Design and evolve application architecture to support long-term scalability and product growth

Networking & System Integration

• Design, optimize, and maintain the application’s networking pipeline for reliability and performance
• Implement advanced network request interception, modification, monitoring, and recovery mechanisms within Electron
• Collaborate with third-party partners to define API contracts, data formats, authentication flows, and error-handling strategies
• Troubleshoot complex networking and integration issues across different operating systems and environments

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Engineering Excellence

• Build and improve logging, monitoring, and observability capabilities for desktop applications
• Investigate and resolve production issues such as crashes, white screens, slow startup, memory leaks, and performance bottlenecks
• Design resilience and graceful degradation strategies to improve application reliability
• Participate in architecture discussions, code reviews, and technical design decisions
• Continuously improve engineering quality, maintainability, testing, and development efficiency

AI-Driven Development

• Explore and adopt AI-powered development tools and workflows across the engineering lifecycle
• Improve productivity through AI-assisted coding, testing, debugging, documentation, and performance analysis
• Contribute to establishing modern AI-enabled engineering best practices within the team

What We’re Looking For

Core Qualifications

• 5+ years of professional experience in frontend software development
• 3+ years of experience designing and building frontend architectures for complex applications
• Strong expertise in HTML, CSS/SCSS, JavaScript, TypeScript, and modern frontend frameworks such as React, Next.js, or Vue
• Solid understanding of Electron architecture, including the main process, renderer process, IPC communication, and desktop application lifecycle
• Hands-on experience implementing network request interception, modification, logging, and debugging within Electron applications
• Strong understanding of networking concepts, including HTTP, WebSocket, proxies, authentication, and browser networking
• Excellent debugging and troubleshooting skills across browser, Electron, and operating system layers
• Proven experience designing and building high-performance frontend architectures, reusable component libraries, or foundational engineering tools

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• Strong software engineering fundamentals with a focus on clean architecture, maintainable code, and long-term scalability
• Strong ownership mindset with the ability to independently drive complex technical initiatives from design through production
• Passion for leveraging AI-powered tools and workflows to improve development speed, software quality, and engineering productivity
• Strong communication, collaboration, and problem-solving skills with the ability to work effectively across cross-functional and distributed teams

Nice to Have

• Experience developing browser extensions or Chromium-based applications
• Experience establishing engineering standards, technical documentation, or frontend best practices
• Experience with Node.js and modern backend frameworks
• Familiarity with desktop application security, operating system internals, or low-level system integration
• Experience working in international or distributed engineering teams
• Experience in high-growth startups or product-focused engineering organizations

WHAT’S IN IT FOR YOU

• Competitive salary: Attractive compensation and relocation package commensurate with experience and skills. Bonus Beckham Law tax rate if you are moving to Spain for the first time.
• Remote work and yearly company offsite: We offer flexible working hours and location options (work remotely within the Canary Islands, or from our two offices in Tenerife).
• Professional growth: Opportunities for career advancement and personal development in a fast-growing company.
• Inclusive culture: Be part of a diverse and collaborative team committed to innovation and excellence.
• Direct Impact: working with a team focused within a high-growth SaaS company helping creators thrive!

Ready to Join the Team?

Apply now and be part of the future of creator monetization. We’re excited to meet passionate people who want to help creators scale their businesses through smart automation and human connection.