Role OverviewAs a Senior Front End Software Engineer, you will own frontend solutions end-to-end — from defining problems aligned to OKRs, through design, build, launch, and ongoing operation. The role combines hands-on technical leadership with strong collaboration across product, engineering, and business teams.You will design and build customer-facing features as well as internal platforms that improve engineering efficiency. This role requires comfort with ambiguity, strong decision-making, and a focus on delivering measurable customer and business value. Key Responsibilities• Own frontend products end-to-end: problem definition, architecture, delivery, and operations • Deliver customer value while balancing speed, scope, and priorities • Act as a technical leader and go-to partner for Product Management • Architect scalable frontend frameworks leveraged across teams • Identify key technical risks and opportunities early • Lead large-scale scoping, estimation, and planning efforts • Invest in long-term technical health (“tech wealth”) to accelerate shipping • Use data to form hypotheses, iterate quickly, and drive impact • Mentor engineers, give and receive candid feedback, and raise engineering standards • Lead complex engineering discussions and present options to leadership • Step in for development management duties when required  Required Experience & Skills• 8+ years of software development experience building production web applications • Strong experience with React, Vue, Angular, or similar frameworks • Deep expertise in JavaScript and TypeScript, CSS, Node.js, and modern tooling (NPM, Yarn, Babel, Jest, Cypress, Enzyme) • Mastery of REST and GraphQL APIs, including influencing API design • Strong understanding of SSR, CSR, and static generation tradeoffs • Solid grasp of software architecture, data structures, caching, and async programming • Proven experience leading large, multi-team projects from concept to post-launch • Comfortable working on under-defined problems and less glamorous but high-impact work • Experience mentoring engineers and building strong engineering teams • Ability to communicate clearly with both technical and non-technical stakeholders • Strong partnership skills with Product Management • Experience identifying project risks, evaluating build vs. buy decisions, and tailoring technical solutions to business needs • Familiarity with analytics and data tools such as SQL, pandas, and FullStory  Mindset & Ways of Working• Outcome-focused and customer-driven • Constructively dissatisfied with the status quo • Comfortable making tough tradeoffs • Focused on what’s right, not who • Collaborative, curious, and continuously improvingAbout MozaiqMozaiq is a fully remote team with roots in the US and Eastern Europe. We build powerful, cross-functional teams that support some of the most sophisticated tech and marketing organizations in the world.🌐 Global Family: A tight-knit, multicultural, remote-first team💼 Meaningful Work: Support world-class brands and products🤝 Inclusive Culture: We prioritize collaboration, clarity, and growthPerks & Benefits🌍 Work from anywhere⏳ Flexible hours🏝 Paid time off + holidays🛫 Team offsites🩺 Subsidised Health insuranceWorking hours: While the role is fully remote and flexible, we require approximately 4 hours of overlap with U.S. business hours, generally falling between 6PM and 10PM Central European Time.