Squarespace

Full Stack Engineer – Founding Engineer

Squarespace

full-time

Posted on:

Location Type: Remote

Location: United States

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Salary

💰 $90 - $140 per hour

About the role

  • Design and build full-stack applications from the ground up across Python/TypeScript backends, React frontends, and cloud infrastructure
  • Architect data pipelines, third-party integrations, and API-first systems that power products and client solutions
  • Integrate AI/LLM capabilities into applications, working with models via APIs to deliver intelligent features
  • Collaborate directly with clients to understand requirements, provide technical guidance, and deliver business value
  • Own features end-to-end from initial design through deployment, monitoring, and iteration
  • Establish engineering best practices and development workflows as a founding team member

Requirements

  • Have 5+ years of professional experience building production platforms
  • Have shipped products or features that users rely on and can navigate tradeoffs between speed and quality
  • Are proficient in Python and TypeScript with experience building maintainable, scalable backends
  • Have foundational skillset and understanding of modern frontend development (TypeScript/React)
  • Are comfortable with cloud infrastructure (AWS, GCP, or Azure) configurations and deployments
  • Have experience leveraging AI coding assistants like Cursor, Claude Code, and other LLM powered tools while maintaining high standards for code quality, architecture, and maintainability
  • Have experience with data integrations and working with complex data flows
  • Can work directly with clients, translating business needs into technical solutions and communicating clearly
  • Embody high agency: you identify problems, propose solutions, and follow through independently
  • Bonus: experience training or fine-tuning ML models, familiarity with multiple cloud platforms, or data engineering background
Benefits
  • Competitive hourly rate ($90-140/hour) with path to full-time conversion (Competitive salary and 1st engineer equity)
  • Full-time benefits include comprehensive health insurance and generous PTO
  • Shape technical direction and engineering culture as the founding engineer
  • Work directly with experienced founders on meaningful problems
  • Fully remote with flexible schedule and trust to manage your own time
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
PythonTypeScriptReactcloud infrastructuredata pipelinesAPI-first systemsAI integrationdata integrationsML model trainingscalable backends
Soft Skills
client collaborationtechnical guidanceproblem identificationsolution proposalindependent follow-throughcommunicationtradeoff navigationbusiness value deliveryengineering best practicesdevelopment workflows