Full Stack Software Engineer

Stealth Startup; Redwood City (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Stealth Startup is seeking a senior full stack engineer to build the software foundation for a new category of consumer technology. You will work across the stack from customer-facing experiences to backend systems, AI integrations, and the infrastructure that powers them.

As an early team member, you’ll influence architectural decisions, product development, and engineering culture, partnering with founders, design, product, and hardware to turn ambitious ideas into daily-used products.

Qualifications

• 4+ years of experience shipping production software.
• Strong full stack skills across frontend and backend.
• Comfortable moving across stack and learning new technologies.
• Experience shipping 0→1 products or in fast-paced startups.

Responsibilities

• Design, build, and ship customer-facing products across web, mobile, and device experiences.
• Develop scalable backend services, APIs, and infrastructure powering the platform.
• Work across the full product lifecycle from prototypes to production systems.
• Collaborate with product, design, AI, and hardware teams to realize new experiences.
• Build integrations between software, AI systems, and connected devices.
• Improve reliability, performance, security, and developer experience across the stack.
• Make thoughtful technical decisions balancing speed, quality, and maintainability.
• Help define engineering culture, standards, and best practices as the team grows.
• Own projects end-to-end and ship quickly with autonomy.

Skills

Full stack development

Frontend/Backend

API design

Cloud services

IoT familiarity

Job description

About Us

We're building the intelligence layer for the home: ambient, proactive, and built into a family of devices—a central hub, accessories, and the software that ties them together. We're a Series A startup backed by a tier-1 VC and technology partners, with an ex-unicorn founder. Early team, moving fast.

The Role

We're looking for a senior full stack engineer to help build the software foundation for a new category of consumer technology.

You'll work across the stack from customer-facing experiences to backend systems, AI integrations, and the infrastructure that powers them. This is a role for someone who loves building products from scratch, thrives in ambiguity, and wants to have a direct impact on what gets shipped every week.

As an early member of the team, you'll have significant ownership over technical decisions, architecture, product development, and engineering culture. You'll work closely with founders, design, product, and hardware teams to turn ambitious ideas into products people use every day.

What You'll Do

• Design, build, and ship customer-facing products across web, mobile, and device experiences.
• Develop scalable backend services, APIs, and infrastructure that power our platform.
• Work across the entire product lifecycle, from early prototypes to production systems.
• Partner closely with product, design, AI, and hardware teams to bring new experiences to life.
• Build integrations between software, AI systems, and connected devices.
• Improve reliability, performance, security, and developer experience across the stack.
• Make thoughtful technical decisions while balancing speed, quality, and long-term maintainability.
• Help define engineering culture, standards, and best practices as the team grows.
• Own projects end-to-end and ship quickly with a high degree of autonomy.

You

• 4+ years of experience building and shipping production software.
• Strong full stack engineering skills with experience across frontend and backend development.
• Comfortable working across multiple parts of the stack and learning new technologies when needed.
• Experience building products from 0 to 1 or working in fast-paced startup environments.
• Strong product instincts and a desire to build things people actually use.
• Able to move quickly without sacrificing quality.
• Excellent problem-solving skills and attention to detail.High ownership, low ego, and strong collaboration skills.

Nice to Have

• Experience building consumer products at scale.
• Experience with AI-powered products, LLMs, agents, or conversational interfaces.
• Experience with real-time systems, IoT, connected devices, or smart home products.
• Experience with React, TypeScript, Python, mobile development, or cloud infrastructure.
• Prior startup or founding engineer experience.
• Strong interest in product design and user experience.

Why Join

• Help define an entirely new category of consumer technology.
• Work directly with experienced founders and an exceptional early team.
• Own meaningful parts of the product from day one.
• Build products that blend hardware, software, AI, and design.
• Join early enough to shape both the technology and the company.