Staff Software Engineer (Frontend)

Sirius XM · Bucharest

Apply on the company website

SiriusXM and its brands (Pandora, SiriusXM Media, AdsWizz, Simplecast, and SiriusXM Connect) are leading a new era of audio entertainment and services by delivering the most compelling subscription and ad-supported audio entertainment experience for listeners – in the car, at home, and anywhere on the go with connected devices. Our vision is to shape the future of audio, where everyone can be effortlessly connected to the voices, stories and music they love wherever they are.  

This is where a diverse group of emerging talent and legends share authentic and purposeful songs, stories, sounds and insights through some of the best programming and technology in the world. Our critically acclaimed, industry-leading audio entertainment encompasses music, sports, comedy, news, talk, live events, and podcasting. Regardless of their role, each of our employees is vital in bringing SiriusXM’s vision to life daily.

SiriusXM Media is the gateway for marketers to North America's most prominent digital audio advertising ecosystem. As the combined advertising revenue organization of SiriusXM Holdings Inc., SiriusXM Media spans across leading owned and operated audio platforms Pandora and SiriusXM; innovative ad tech solutions powered by AdsWizz; sonic creative consultancy Studio Resonate; and an extended content network featuring exclusive monetization agreements with Audiochuck, NBC Universal, SoundCloud, and many more. Reaching more than 150 million listeners each month, SiriusXM Media delivers audiences the tailored brand experiences they crave while putting creators first, making it easy for every marketer to produce, plan, buy and measure across its entire audio universe. 

About AdsWizz 

AdsWizz, a subsidiary of SiriusXM, is the leading global provider of digital audio and podcast advertising solutions. AdsWizz is the underlying monetization solution for well-known music platforms, podcasts, and broadcasting groups worldwide, giving advertisers of all sizes unprecedented access to premium and niche audio content. Through dynamic ad insertion, advanced programmatic platforms, and innovative audio formats, AdsWizz efficiently connects buyers and sellers for digital audio and podcast advertising. AdsWizz is a global company with a presence in over 40 countries and a Technology Development Hub in Bucharest, Romania.

How you’ll make an impact: 

As a Staff Frontend Software Engineer, you will join a high-performing team of engineers who build, own, and maintain frontend services and products. You will play a pivotal role in shaping the technical vision and strategy for our frontend team, driving cross-functional collaboration, and steering the architecture of our podcast-centric platform. Your leadership will be essential in delivering a robust, performant, and scalable product, setting a high standard for the team and influencing the overall product roadmap.

What you'll do:

• Define and evolve the long-term frontend architecture and technical strategy

• Drive the adoption of modern frontend engineering practices, ensuring consistency, maintainability, scalability and performance.

• Lead complex technical initiatives from design through production while balancing business priorities with engineering excellence.

• Translate ambiguous business goals into technical strategy, success metrics, and execution plans; present tradeoffs and recommendations to senior engineering leadership.

• Promote Design System best practices and ensure consistent implementation across applications.

• Champion component-driven development using Storybook and reusable UI patterns.

• Establish and evolve frontend standards, coding guidelines, architecture principles and engineering best practices.

• Stay up-to-date with industry trends, emerging technologies, and best practices, applying this knowledge to improve front-end engineering capabilities.

• Lead technical discussions and architecture reviews across engineering teams.

• Drive improvements in Developer Experience (DX), build tooling, CI/CD and development workflows.

• Ensure applications meet high standards for accessibility (WCAG), responsive design and usability.

• Develop and maintain technical documentation, including architecture diagrams and design documents. Create reusable patterns, reference implementations, and decision records adopted across teams to accelerate delivery and reduce rework.

• Define testing strategies including unit, integration, visual regression and end-to-end testing.

• Collaborate closely with Product, Design, Backend, QA and DevOps to deliver high-quality products.

• Evaluate emerging technologies and guide framework evolution when appropriate.

• Identify technical debt and lead initiatives to continuously improve code quality and maintainability.

• Mentor and elevate other senior engineers across the organization through design reviews, technical coaching, and sharing architectural patterns

What you'll need:

• Bachelor’s Degree in Computer Science, Mathematics or a similar field.

• Ability to work independently and oversee entire projects or significant parts, focusing on completing the tasks on time.

• Proven ability to research and become proficient in new technologies.

• Strong analytical and problem-solving skills, with meticulous attention to detail and a dedication to continuous improvement.

• Interpersonal skills and ability to interact and work with staff at all levels.

Core Frontend experience:

• 7+ years of professional Frontend development experience building large-scale enterprise applications.
• Expert knowledge of modern JavaScript (ES2023+) and the language internals.
• Strong understanding of TypeScript and advanced type system features.
• Expert knowledge of HTML5, CSS3 and browser rendering.
• Advanced CSS architecture including design tokens, flexbox, grids, modern selectors, etc.
• Advanced Sass architecture and scalable styling methodologies.
• Deep understanding of browser APIs and the DOM.

Vue Ecosystem:

• Expert experience with Vue 3.
• Composition API, component architecture, performance optimization
• Vue Router, Pinia, Vite.
• Vue ecosystem best practices.

Angular Ecosystem:

• A deep understanding of SPA frameworks, with Angular as a nice to have.

Architecture:

• Strong understanding of component-driven architecture.
• Micro Frontends (Module Federation or similar approaches) as a nice to have.
• Monorepo experience (Nx, Turborepo or similar) as a nice to have.
• Dependency management strategies.
• API integration patterns.
• Performance-first architecture.

Accessibility & UX:

• Expert understanding of WCAG 2.2.
• Semantic HTML, keyboard navigation, screen reader support, ARIA Authoring Practices.
• Focus management, responsive and adaptive design.
• Cross-browser compatibility.

Testing & Quality:

• Experience defining testing strategies across products.
• Unit testing, Component testing, End-to-End testing.
• Visual regression testing.
• Storybook, Chromatic, Playwright.
• Vitest/Jest

Performance:

• Web Vitals optimization.
• Lighthouse, bundle optimization.
• Code splitting, lazy loading, rendering optimization.
• Memory profiling.
• Browser DevTools expertise.

Tooling:

• Vite, npm / pnpm.
• Git, CI/CD pipelines.
• Docker fundamentals

Engineering Excellence:

• Strong understanding of clean architecture and software engineering principles.
• SOLID & DRY principles.
• Design patterns applicable to frontend.
• Code review leadership.
• Technical documentation.

Our offer – what’s in it for you:

• Casual & friendly working environment with opportunities to impact the company with your ideas and involvement

• Technology diversity, interesting technical exposure in building the best ad-tech product on the market

• Corporate annual bonus system to celebrate personal and company wins 

• Individual training budget to use as you like for skill improvement

• Sports bonus for activities such as gym, biking, and yoga

• Meal tickets card for enjoyable lunch breaks 

• Gift cards for special events and holidays

• Days off for your birthday and special events to recharge and enjoy your BIG moment 

• Private medical subscription to keep you healthy 

• Private Pension Fund (Pillar III) based on your years of tenure 

• Free library subscription for the book lover in you 

• Suitable hardware devices (new laptops / Macs, displays etc.) 

• Parking lots at office location  – 60% co-funded by the company

• Company offsites, CSR activities, and getaways to stay connected and keep the flame alive 

Our goal at SiriusXM is to provide and maintain a work environment that fosters mutual respect, professionalism, and cooperation. SiriusXM is an equal opportunity employer that does not discriminate based on actual or perceived race, creed, color, religion, national origin, ancestry, alienage or citizenship status, age, disability or handicap, sex, gender identity, marital status, familial status, veteran status, sexual orientation or any other characteristic protected by applicable federal, state or local laws.

The requirements and duties described above may be modified or waived by the Company in its sole discretion without notice.

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