Développeur·euse Frontend / Frontend Developer

Frontend Developer

Xona is the navigational intelligence company bringing real-time, centimeter-level certainty to any device, anywhere on Earth.

With Pulsar – the world's most advanced PNT satellite infrastructure in Low Earth Orbit – Xona will offer a future-proof, backwards-compatible global positioning system optimized for absolute precision, superior power, and robust protection.

Xona développe la prochaine génération de navigation par satellite — une solution performante et résiliente en alternative au GPS, reposant sur une constellation commerciale de satellites en orbite terrestre basse (LEO). Notre objectif est de redéfinir les systèmes de positionnement, de navigation et de synchronisation (PNT) de fond en comble.

The Frontend Developer is responsible for the prototyping, development and delivery of Xona's Customer Portal, offering our PNT services to various markets. This role operates from Xona's Montréal office and operates in the 4D product design process, requiring tight collaboration between the Product Manager, UX Designer and Software Developers.

This is the first frontend development position in the company and an opportunity to grow as a senior or lead as Xona's products scale globally.

What You'll Do

• Validate design decisions with fast prototypes, leveraging modern techniques like vibe-coding
• Own the Design–Dev handoffs— catch gaps early, assess feasibility, estimate before scope gets locked
• Build a component library, aligned with the design system
• Own frontend code including query structuring, caching strategy, and error handling
• Integrate with AWS, GraphQL, REST API and MCP servers
• Own the quality of the web application with API & end-to-end testing
• Contribute to Product discovery, UX Design, API definition
• Ensure accessibility reviews throughout development, support various device sizes

Required Qualifications

• 3–5+ years of experience in frontend, design or fullstack roles
• Expertise in JavaScript and TypeScript (React native, Next.js, Vue.js)
• Autonomous deploying web applications & managing dependencies
• Proven record shipping rich web apps at scale on Cloud infrastructure
• Experience in Frontend testing, API testing, automations
• Ability and willingness to work on-site in Montréal

Desired Qualifications

• Power users with design toolkit (Figma, Framer)
• Experience with SEO, Web analytics platform (Pendo, Posthog)
• Familiarity with Maps engines (Mapbox) and geospatial data
• Prior exposure to startup organizations
• Fluent in English and French
• Excellent problem-solving skills, with the confidence to navigate unstructured environments.