Smadex is a performance advertising engine for mobile apps, enabling the world's leading marketers to grow across Mobile and Connected TV (CTV). Headquartered in Barcelona, with teams across the Americas, EMEA, and APAC, Smadex is a business unit of Entravision (NYSE: EVC).

As a Senior Full Stack Engineer , you will serve as the technical anchor and architectural pillar for the team. Architect Scalable Creative Tools: Lead the technical design, development, and delivery of core features across internal creative tooling utilizing modern Angular and TypeScript.

Master High-Performance Runtimes: Guide the engineering of ultra-lightweight client-side components and interactive playable ads optimized for mobile webview performance, strict bundle-size limits, and sandboxed iframe execution.

Own Server-Side Pipelines: Architect and maintain resilient Node.js microservices and pipelines handling dynamic asset generation, headless bundling, and low-latency tracking/redirect logic.

Drive high-signal pull request reviews, author technical RFCs, introduce pragmatic automated testing, and proactively resolve technical debt.

Coach and mentor mid-level engineers, instilling best practices in web fundamentals, design patterns, and advanced debugging.

5+ years of professional software engineering experience , with deep expertise across modern TypeScript in both client and server environments.

- Advanced Angular Knowledge:



Strong mastery of modern Angular architectures (Signals, Standalone Components, reactive state management, change detection strategies, and modular code organization).
- Solid Node.js Foundations: Strong grasp of DOM/Canvas performance, memory lifecycle management, iframe sandboxing, postMessage communication protocols, and asset loading optimization.
- Architectural Judgment & Code Quality: Proven track record of conducting high-signal code reviews, designing maintainable systems, and introducing pragmatic automated testing.
- Familiarity with the digital advertising ecosystem (MRAID specifications, tracking macros, click-through handling, or attribution models).

Experience with HTML5 Canvas, WebGL, or lightweight rendering libraries (PixiJS, Phaser, Three.js) for interactive creatives.

Hands-on experience with modern JavaScript bundlers and build tools (esbuild, Vite, Rollup, or custom AST transformation pipelines).

Experience implementing automated CI/CD performance and bundle-budget monitoring.

Great work-life balance: work from home (2 days per week), flexible hours

LinkedIn Learning and training opportunities

And, if you are ready to take your career to the next level and tackle engineering challenges at a integral scale, we encourage you to apply!

Please note that we do NOT provide VISA sponsorship. Candidates without a legal permit to work in Spain won't be considered.

📌 Senior Full-Stack Engineer (Node.js/Angular) (Barcelona)
🏢 Smadex Slu
📍 Barcelona