Senior Software Engineer, Frontend Platform

Job title: Senior Software Engineer, Frontend Platform

About the Role Join Alloy's Frontend Platform team as a Senior Software Engineer focused on building reusable foundations and platform capabilities that empower other engineers to ship high-quality product experiences. You will influence architecture, standards, and best practices across the frontend system, while shaping how frontend engineering is practiced at Alloy.

What You'll Do

• Build and improve shared frontend foundations: components, patterns, tooling, and platform capabilities.
• Define architecture, standards, and best practices for scalable, maintainable frontend systems.
• Build and improve customer-facing surfaces across the Alloy platform, shaping frontend systems and experiences that are useful and intuitive for users.
• Partner with engineers, designers, and product counterparts to translate broad needs into simple, durable solutions with company-wide impact.
• Raise the quality bar for frontend engineering through thoughtful design, strong implementation, clear documentation, and pragmatic technical leadership.
• Improve the developer experience by reducing friction in local development, testing, release workflows, observability, and day-to-day engineering workflows.
• Identify opportunities to modernize how we build, ship, and maintain frontend software, including responsible use of AI and agentic engineering tools where they increase quality.
• Contribute as a senior engineer on a growing team: driving technical decisions, mentoring others, and helping shape the team’s direction as its charter expands.

What We're Looking For

• You’re a senior frontend engineer with 5+ years of experience, deep fundamentals in JavaScript or TypeScript, modern HTML and CSS, and experience building complex web applications with a modern framework such as React.
• Strong engineering judgment and know how to balance product needs, user experience, long-term maintainability, and delivery speed.
• You’ve worked on shared systems before, whether that means design systems, frontend architecture, internal platforms, developer tooling, or other cross-cutting investments.
• You care about quality in the broad sense: clean abstractions, accessibility, performance, testing, reliability, and thoughtful user experience.
• You’re comfortable operating in ambiguity and can help shape a problem space that is still evolving rather than waiting for every requirement to be fully defined.
• You collaborate well across disciplines and communicate clearly with engineers, designers, and stakeholders with different perspectives.
• You use new tools thoughtfully. You’re curious about AI-enabled ways of working and can incorporate them into your workflow without outsourcing core engineering thinking.
• You’re motivated by leverage and craft: you want to build the systems that help an entire engineering organization do better work.
• We're a lean team, so your impact will be felt immediately, and opportunities will grow as the company scales up.

Nice to Have

• Experience with design systems, internal platforms, or developer tooling across multiple teams.
• Interest in AI-enabled workflows and agentic engineering tools.
• Experience with modern frontend tooling and cross-team collaboration on platform initiatives.

Compensation & Benefits

• Alloy is committed to fair and equitable compensation practices. The anticipated starting base compensation range is provided in the posting, but the exact numbers are not disclosed here. Pay may vary based on knowledge, skills, and experience.
• Hybrid work environment with local onsite presence three days a week. Insider perks or benefits are not listed in the posting.