Senior Full Stack Engineer
Smadex SLU4 days ago
Barcelona, SpainSenior
Responsibilities
- Architect, develop, and deliver scalable internal creative tools using Angular and TypeScript.
- Build lightweight client-side components and interactive playable ads optimized for mobile webview performance, bundle-size limits, and sandboxed iframe execution.
- Architect and maintain Node.js microservices and pipelines for dynamic asset generation, headless bundling, and low-latency tracking and redirect logic.
- Lead code reviews, author technical RFCs, introduce automated testing, and resolve technical debt.
- Coach and mentor mid-level engineers on web fundamentals, design patterns, debugging, and technical decision-making.
Requirements
- 5+ years of professional software engineering experience with deep TypeScript expertise across client and server environments.
- Advanced knowledge of Angular architectures, including Signals, Standalone Components, reactive state management, change detection, and modular organization.
- Strong Node.js knowledge covering asynchronous event loops, streaming I/O, headless compilation and bundling, and REST or microservice API design.
- Strong browser and runtime fundamentals, including DOM and Canvas performance, memory lifecycle management, iframe sandboxing, postMessage, and asset loading optimization.
- Demonstrated ability to conduct high-signal code reviews, design maintainable systems, introduce automated testing, and mentor engineers.
- Familiarity with digital advertising concepts such as MRAID specifications, tracking macros, click-through handling, or attribution models is a bonus.
- Experience with HTML5 Canvas, WebGL, PixiJS, Phaser, or Three.js is a bonus.
- Experience with esbuild, Vite, Rollup, or custom AST transformation pipelines is a bonus.
- Experience implementing automated CI/CD performance and bundle-budget monitoring is a bonus.
Benefits
- Work from home 2 days per week and use flexible hours.
- Barcelona office at a central location with a rooftop terrace, barbecue, and fully stocked fridge.
- Meal vouchers through a monthly Ticket Restaurant allowance.
- Monthly gym allowance with a choice between DiR and Wellhub.
- LinkedIn Learning and training opportunities.
- Monthly TGIF and regular team-building events.
- Work with marketers and engineers from over 40 countries.
Tech Stack
Categories
About Smadex SLU
Smadex SLU builds a programmatic demand-side platform for advertisers and agencies to run performance and brand campaigns across in-app, connected TV, and mobile web. Its platform emphasizes ML-driven optimization, contextual targeting, and first-party data integrations for privacy-centric user acquisition and measurement. Founded in Barcelona in 2011, Smadex operates as a business unit of Entravision Communications (NYSE: EVC).