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Extend

Senior Backend Engineer

Extend

Senior Backend Engineer building and operating real-time systems for a spend management platform. Contributing to system abstraction, operational reliability, and using AI tools.

Posted 7/29/2026full-timeRemote • 🇺🇸 United StatesSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in designing and evolving systems with a focus on real-time operations, including card issuance and settlement. Proficient in managing distributed systems, cloud infrastructure, and backend frameworks while effectively communicating technical concepts to diverse stakeholders.

Highest-signal resume keywords
Distributed SystemsCloud InfrastructureRelational DatabasesExternal APIsIntegration Testing

ATS Keywords

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Applicant Tracking System Keywords

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

Hard Skills
Real-Time SystemsOperational OwnershipObservabilityIncident ResponsePerformance Work
Soft Skills
Effective Communication
Tools & Technologies
AI Coding Agents
Industry Keywords
Card IssuanceAuthorizationSettlement

Tech Stack

Tools & technologies
CloudDistributed Systems

About the role

Key responsibilities & impact
  • Design and evolve the abstraction for Extend's systems
  • Build and operate the real-time systems behind card issuance, authorization, and settlement
  • Build the mocks and tooling to test partner systems
  • Own problems from design to production reliability
  • Use AI coding agents heavily

Requirements

What you’ll need
  • Real depth in at least one operational discipline
  • Experience with external APIs and operational ownership
  • Experience with distributed systems, cloud infrastructure, relational databases, and backend frameworks
  • Background in observability, integration testing, incident response, or performance work
  • Ability to communicate technical tradeoffs effectively to non-technical stakeholders
  • Legal eligibility to work in the United States

Benefits

Comp & perks
  • Competitive compensation package
  • Equity for all–our success is your success
  • Unlimited vacation–and we want you to use it
  • 401K matching
  • Flexible work options
  • Comprehensive health coverage for you and your family
  • Maternity and paternity leave benefits
  • Reimbursement for gym memberships
  • $5K referral bonus–bring your friends!