Senior/Staff Frontend Engineer

Sinclair Talent Solutions; San Francisco (CA); On-site; USD 170,000 - 230,000; Full time

Job summary

A technology solutions provider is seeking a Senior / Staff Frontend Engineer to join their Series A AI-driven company. The role focuses on building core customer-facing features and owning frontend architecture, requiring over 5 years of experience in product-focused engineering. Ideal candidates will have a strong UI/UX sensibility and enjoy shaping product direction at an early-stage company. This is a full-time opportunity with competitive compensation, located in San Francisco, California.

Qualifications

• 5+ years of product-focused frontend engineering experience.
• Proven experience building consumer or business-facing products.
• Strong understanding of modern web technologies and frontend architecture.

Responsibilities

• Build and ship core, customer-facing product features.
• Own frontend architecture and define best practices.
• Collaborate with product, design, and backend engineering teams.

Skills

Product-focused frontend engineering experience

Building consumer or business-facing products

Strong UI/UX instincts

Understanding of modern web technologies

Experience with data-rich interfaces

Job description

Sinclair Talent Solutions provided pay range

This range is provided by Sinclair Talent Solutions. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$170,000.00/yr - $230,000.00/yr

Direct message the job poster from Sinclair Talent Solutions

Connecting IT & Cybersecurity Talent with SaaS, AI, Start‑ups & Enterprises

Senior / Staff Frontend Engineer | Product-Focused | Series A Startup

We’re working with a Series A, AI-driven software company building a product that fundamentally changes how federal contractors create and submit proposals. This team is tackling complex, high-stakes workflows and turning weeks of compliance-heavy work into days through thoughtful product design and modern AI.

This role is ideal for a Senior or Staff-level Frontend Engineer who cares deeply about user experience, enjoys owning large parts of the product, and wants to help shape both the technical foundation and product direction at an early‑stage company.

What you’ll do

• Build and ship core, customer-facing product features used by external users
• Own frontend architecture and help define best practices as the product scales
• Partner closely with product, design, and backend engineering to deliver polished, intuitive experiences
• Translate complex workflows into clean, usable interfaces
• Contribute to enterprise‑grade software with high standards for performance and reliability
• Play a key role in an early‑stage company, influencing both product direction and engineering culture

What we’re looking for

• 5+ years of product-focused frontend engineering experience
• Proven experience building consumer or business-facing products (not just internal tools)
• Background working at a Series A or early-stage startup, or a strong desire to work in that environment
• Track record of shipping high-quality software in fast-moving, ambiguous settings
• Senior-level ownership mindset, with Staff-level scope or ambition welcomed

Technical skills

• Deep understanding of modern web technologies and frontend architecture
• Strong UI/UX instincts and product design sensibility
• Experience building complex, data-rich interfaces
• Exposure to AI-powered features or large language models is a plus

Traits that matter

• Product-minded and deeply user-centric
• Comfortable taking ownership and making decisions
• Excited to build from the ground up at an early-stage startup
• Clear communicator who collaborates well across disciplines

If you’re excited about building meaningful, user-facing products at a Series A company where your work has visible impact, this is worth a conversation.

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Information Technology

Industries

Software Development