✦ Luna Orbit — Software Engineering

Senior Software Engineer, API Enablement

at Upstart

📍 Remote, US Remote 💰 $163K – $226K USD / year Posted March 28, 2026
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Position Details

Salary $163K – $226K USD / year
Type Full-Time
Experience senior
Exp. Years Not specified
Education Not specified
Category Software Engineering

About this role

This role involves designing and implementing high-impact, scalable APIs and frameworks within an event-driven architecture, primarily for a fintech platform, utilizing multiple programming languages and ensuring security and performance.

Key Responsibilities

  • Design and implement cross-cutting solutions
  • Build frameworks and tooling
  • Ensure security and performance
  • Support event-driven architectures
  • Collaborate with engineering teams

Technical Overview

The technical environment includes Python, Kotlin, Ruby, TypeScript, gRPC, microservices, APIs, and security best practices, focusing on building scalable, observable, and secure systems.

Ideal Candidate

The ideal candidate is a senior software engineer with experience in API development, microservices, and event-driven architectures, proficient in Python, Kotlin, Ruby, and TypeScript, with a focus on security and performance.

Must-Have Skills

Design and implement high impactcross cutting solutionsExperience with PythonKotlinRubyTypeScriptBuilding frameworks and toolingEvent Driven ArchitecturesAPIs and microservicesSecurity principlesPerformance optimization

Nice-to-Have Skills

Experience with gRPCExperience with AI/MLCloud infrastructure knowledgeData quality and observability tools

Tools & Platforms

PythonKotlinRubyTypeScriptgRPCAPIsMicroservices

Required Skills

PythonKotlinRubyTypeScriptgRPCAPIsmicroservicessecurityobservabilityperformance optimization

Hard Skills

PythongRPCRubyKotlinPythonTypeScriptEvent Driven ArchitecturesAPIsMicroservicesObservabilitySecurityPerformance optimization

Soft Skills

collaborationcommunicationproblem-solvingteamworkinitiative

Industry & Role

Industry Fintech
Job Function Developing scalable APIs and frameworks for fintech applications
Role Subtype Software Architect
Tech Domains Python, Kotlin, Ruby, TypeScript, gRPC

Keywords for Your Resume

Senior Software EngineerAPI EnablementPythonKotlinRubyTypeScriptgRPCEvent Driven ArchitecturesMicroservicesAPIsSecurityPerformance optimizationObservabilitySoftware developmentCloudFintechAPI developmentmicroservicessecurityperformanceobservability

Deal Breakers

Lack of experience with Python, Kotlin, Ruby, or TypeScript, No experience with gRPC or microservices, No background in API development, Unwillingness to work remotely

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