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Duet

Senior Full-Stack Engineer

Duet

. Design, build, and maintain systems powering customer-facing products .

Posted 10/7/2026full-timeNew York City • New York • United StatesSenior💰 $160,000 - $185,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in backend engineering with a strong focus on building production web-based software, particularly in Python and JavaScript. Capable of designing and implementing systems that support complex business logic and workflows while ensuring safety and observability.

Highest-signal resume keywords
Backend EngineeringPython ProficiencyJavaScript ProficiencyRESTful API DevelopmentComplex Business Logic Systems

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Backend EngineeringFull-Stack EngineeringProduction Web-Based Software DevelopmentRESTful API DevelopmentWorkflow Logic TestingDebugging Production IssuesSoftware AbstractionConfigurable WorkflowsReusable Primitives CreationArchitectural Decision Influence
Soft Skills
Onboarding New EngineersCulture of OwnershipClarity in Communication
Industry Keywords
Customer-Facing ProductsAutomationManual Operational ProcessesHybrid Work EnvironmentNew York City

Tech Stack

Tools & technologies
JavaScriptPython

About the role

Key responsibilities & impact
  • Design, build, and maintain systems powering customer-facing products
  • Design and implement backend systems supporting configurable workflows and automation
  • Create reusable primitives for multiple products built on shared logic
  • Translate manual operational processes into durable software abstractions
  • Iterate quickly based on real usage from practices
  • Write tests for workflow logic and core systems
  • Debug production issues and improve systems based on failure modes
  • Ensure changes are safe, observable, and reversible
  • Influence architectural decisions and engineering standards
  • Help onboard new engineers and contribute to a culture of ownership and clarity
  • Report directly to the founding team

Requirements

What you’ll need
  • 6+ years of experience building production web-based software
  • Strong background in backend or full-stack engineering
  • Experience working on systems that support complex business logic or workflows
  • Proficiency in Python
  • Proficiency in JavaScript
  • Experience building and consuming RESTful APIs
  • Comfort working across the stack, with backend as your strength
  • Comfort with rule-based and user-configured systems
  • Must be located in NYC and able to work hybrid in office Monday-Wednesday

Benefits

Comp & perks
  • Equity
  • High ownership: Build foundational systems as an early engineer, reporting directly to founders
  • Real users: Clinics use what you ship every day
  • Product-led: Work on features customers actually see and feel
  • Mission-driven: Support independent primary care at a critical moment