ONE

Backend Software Engineer – CoreApp

ONE

full-time

Posted on:

Location Type: Remote

Location: United States

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Salary

💰 $170,000 - $210,000 per year

About the role

  • Design, build, and ship backend services that support user-facing features across mobile and web experiences
  • Collaborate closely with frontend engineers, product managers, designers, and data partners
  • Lead backend technical planning and contribute to architecture decisions that improve scalability, reliability, and performance
  • Proactively identify opportunities to improve user experience through backend optimizations and system enhancements
  • Build and maintain clear technical documentation to support a growing and distributed engineering organization

Requirements

  • 5+ years of professional experience building and scaling backend systems in consumer technology or fintech environments
  • Experience designing and operating distributed systems, APIs, and data flows that support user facing applications
  • Familiarity with message brokers and event driven systems, as well as caching and performance optimization strategies
  • Demonstrated ability to lead technical execution, mentor other engineers, and deliver with a high bar for quality
  • Drive and proactivity – everyone here is a builder and executor.
Benefits
  • Competitive base salary, stock options, and health benefits from Day 1
  • 401(k) plan with company match
  • Remote-friendly (US), flexible time off (FTO), and opportunities for growth
  • A high-growth, mission-driven, inclusive culture where your work has real impact
Applicant Tracking System Keywords

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

Hard Skills & Tools
backend servicesdistributed systemsAPIsdata flowsmessage brokersevent driven systemscachingperformance optimizationtechnical documentationscalability
Soft Skills
collaborationleadershipmentoringproactivityuser experience improvementtechnical planningcommunicationexecutionquality focusproblem solving