Senior Software Engineer II, Frontend Platform

alloy; New York (NY); On-site; USD 198,000 - 250,000; Full time

Benefits offered by this job

Unlimited PTO

Equity options

Health, dental, vision with HSA

401(k) with match

Paid parental leave

Home office stipend

Learning & Development stipend

Well-being benefits (ClassPass)

Job summary

Alloy is seeking a Senior Frontend Engineer to lead large frontend and platform investments, defining architecture and standards across teams. You will build shared UI foundations and customer-facing surfaces, partnering with engineering, design, and product to translate broad needs into scalable, high-quality solutions with measurable business impact.

You will guide quality, reliability, and developer experience while responsibly leveraging AI-enabled tooling to speed delivery, in a role with

Qualifications

• Senior frontend engineer with 8+ years of experience in JavaScript/TypeScript, HTML and CSS.
• Experience leading large, complex frontend or platform initiatives.
• Strong engineering judgment balancing user experience, product needs, maintainability, and delivery speed.
• Comfort operating in ambiguity and turning loosely defined problems into clear technical direction.
• Ability to bring product/business context to influence prioritization.
• Thoughtful and responsible use of AI-enabled tools.

Responsibilities

• Lead the design and delivery of large frontend and platform investments across teams.
• Shape technical direction across the frontend stack through architecture, standards, and shared patterns.
• Build and improve shared frontend foundations and customer-facing products.
• Partner with engineering, design, and product to translate needs into scalable solutions.
• Raise the quality bar with documentation, reliability, and engineering practices.
• Influence use of AI-enabled workflows to improve leverage and delivery speed.

Job description

About the team

The Frontend Platform team creates foundational tools that enable engineers to deliver high-quality product experiences quickly and consistently. We build shared UI systems, frontend architecture, performance and reliability solutions, and tools that help teams ship well. We shape patterns, primitives, and workflows that multi‑team work is built upon, focusing on durable solutions for developers and end users. The team is evolving, offering opportunities to define scope and raise ambition as we grow.

What you’ll be doing

• Lead the design and delivery of large, ambiguous frontend and platform investments that span multiple teams or product areas
• Shape technical direction across the frontend stack through architecture, standards, and durable shared patterns
• Build and improve both shared frontend foundations and customer‑facing product surfaces
• Partner closely with engineering, design, and product to turn broad needs into simple, scalable solutions with meaningful user and business impact
• Raise the quality bar across teams through strong technical judgment, clear documentation, and improvements to developer experience, reliability, and engineering practices
• Help shape effective use of AI and agentic engineering workflows in frontend development to improve leverage, quality, and delivery speed

Who we’re looking for

• Senior frontend engineer with 8+ 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
• Experience leading large, complex frontend or platform initiatives and influencing technical direction beyond your immediate team
• Strong engineering judgment and ability to balance user experience, product needs, maintainability, operational excellence, and delivery speed
• Comfortability operating in ambiguity and turning loosely defined problem spaces into clear technical direction and execution
• Ability to bring strong product and business context, using it to influence prioritization and improve customer outcomes
• Thoughtful and responsible use of AI‑enabled tools, maintaining a high quality bar and without outsourcing core engineering thinking

Compensation & Benefits

Alloy is committed to fair and equitable compensation practices. The anticipated starting base compensation range for this role is $198,000 to $250,000. The position is eligible for equity awards in the form of stock options (ISOs) and a competitive total benefits package.

• Unlimited PTO and flexible work policy
• Employee stock options
• Medical, dental, vision plans with HSA (monthly employer contribution) and FSA options
• 401(k) with 100% match up to 4% of annual employee compensation
• Eligible new parents receive 16 weeks of paid parental leave
• Home office stipend for new employees
• Annual Learning & Development stipend
• Well‑being benefits include access to ClassPass