Senior JavaScript Engineer
Location: Lisbon · Category: Engineering & Development · Seniority: Senior · Posted: September 14, 2026 · Verified: Oct 7, 2026
Role Overview & Description
Track team expansion and market signals for Relay Commerce
Polaris7 monitors open roles, strategic market movements, and M&A developments in real time. Get automated intelligence briefings on Relay Commerce and benchmark against direct competitors.
Relay Commerce
relaycommerce.ioCommerce SaaS suite for merchant conversion, retention and subscriptions.
Similar Positions in DACH
Related roles across advertising, media, and data
Builds and ships frontend features across three surfaces: Vue-based embeddable widgets, Angular-based merchant admin tools, and React-based Shopify integrations. Writes clean, well-tested TypeScript and collaborates with backend engineers on a serverless AWS stack. Takes ownership of features end to end, mentors other engineers, and contributes to frontend architecture evolution.
This Senior Software Engineer owns and evolves impact.com's Shopify integration, a critical platform connecting thousands of merchants to the partnership ecosystem. The role involves building reliable, privacy-compliant solutions that capture conversions and customer events, designing secure OAuth flows, and maintaining the Ruby on Rails application that connects Shopify with Impact's APIs. The engineer will evaluate new Shopify capabilities like Checkout Extensibility and Web Pixels to influence the future direction of the integration.
This frontend software engineer role focuses on developing user interfaces for the storefront using React and TypeScript. The engineer will implement responsive designs, ensure cross-browser compatibility, and collaborate with designers to deliver seamless customer experiences.
This senior full-stack engineering role involves building and maintaining web applications across the entire stack. The engineer will deliver scalable, high-performance features, requiring expertise in both frontend and backend technologies.
More Positions at Relay Commerce
1 more open role
This player-coach role leads the Customer Success function for Relo, a retention platform for FMCG brands on Shopify and Klaviyo. The manager will both lead a small team and own a portfolio of merchants, driving onboarding, adoption, and retention while establishing scalable CS processes and collaborating with Product, Engineering, and Sales.
