Senior Software Engineer

Extend

full-time

Posted on: 9/30/2025

Location Type: Remote

Location: Remote • 🇺🇸 United States

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💰 $171,000 - $198,000 per year

Senior

AWSReactTypeScript

About the role

Architect and design purchasing APIs to handle high traffic spikes.
Partner with product and design to build backend systems for multi-step purchasing journeys.
Decouple core purchasing logic for rapid market/product launches.
Mentor and elevate the engineering team through code reviews and architectural guidance.
Design and implement event-driven workflows for complex, long-running processes.

10+ year history of building and maintaining critical backend systems where reliability and performance are non-negotiable.
Comfortable discussing API design and database choices.
Experience designing resilient, high-throughput systems.
Experience with TypeScript, React, and various AWS services.
Ability to design event-driven workflows and long-running processes.
Experience with system architecture, code reviews, mentorship, and architectural guidance.

Benefits

Working with a great team from diverse backgrounds in a collaborative and supportive environment.
Competitive salary based on experience, with full medical and dental & vision benefits.
Stock in an early-stage startup growing quickly.
Generous, flexible paid time off policy.
401(k) with Financial Guidance from Morgan Stanley.

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

API designbackend systemsevent-driven workflowsTypeScriptReactAWS servicessystem architecturecode reviewsmentorshiphigh-throughput systems

mentoringarchitectural guidancecollaborationcommunication