Senior Software Engineer, API Enablement jobs in United States
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Upstart · 9 hours ago

Senior Software Engineer, API Enablement

Upstart is the leading AI lending marketplace partnering with banks and credit unions to expand access to affordable credit. As a Senior Software Engineer on Upstart’s Event Bus, Experimentation, and gRPC team, you will design and implement high impact solutions that enhance the overall architecture and service communication across the company.

Artificial Intelligence (AI)AutomotiveConsumer LendingCreditFinancial ServicesFinTechLendingMachine LearningPersonal Finance
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H1B Sponsor Likelynote

Responsibilities

Lead the design and development of new features and improvements to existing features
Collaborate with cross-functional teams to understand requirements and bring those insights into building an impactful roadmap for the team
Establish best practices for achieving an Event Driven Architecture, safe feature rollout, and service to service, API design
Mentor junior engineers and promote a culture of technical excellence
Contribute to quality improvements within our team and the engineering organization in a meaningful way

Qualification

KotlinPythonRubyTypeScriptGRPCKafkaAutomated testingCommunicationCollaborationOwnership

Required

Bachelor's or Master's degree in Computer Science or related field
5+ years of professional experience
Strong communication skills and ability to collaborate effectively with cross-functional teams
Strong proficiency in one or more of Kotlin, Java, Python, Ruby, or Typescript programming languages
Proficiency in automated testing patterns
Experience in building highly observable systems

Preferred

Experience with Kotlin, Python, Ruby, or Typescript
Experience with Kafka
Experience with gRPC
Experience with A/B testing and/or Feature Flagging
Strong sense of ownership and accountability for the quality and timely delivery of work
Ability to thrive both in self-directed work environments and in collaborative settings, contributing positively to team dynamic

Benefits

Comprehensive medical, dental, and vision coverage with Health Savings Account contributions from Upstart
Generous 401(k) plan with Upstart matching $2 for every $1 contributed, up to $15,000 per year
Employee Stock Purchase Plan (ESPP)
Life and disability insurance
Generous holiday, vacation, sick and safety leave
Supportive parental, family care, and military leave programs
Annual wellness, technology & ergonomic reimbursement programs
Social activities including team events and onsites, all-company updates, employee resource groups (ERGs), and other interest groups such as book clubs, fitness, investing, and volunteering
Catered lunches + snacks & drinks when working in offices

Company

Upstart (NASDAQ: UPST) is a leading AI lending marketplace partnering with banks and credit unions to expand access to affordable credit.

H1B Sponsorship

Upstart has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (68)
2024 (67)
2023 (85)
2022 (85)
2021 (42)
2020 (15)

Funding

Current Stage
Public Company
Total Funding
$3.36B
Key Investors
CastlelakeProgressiveRakuten
2025-11-06Post Ipo Debt· $1.5B
2025-09-05Post Ipo Debt· $320M
2025-08-12Post Ipo Debt· $600M

Leadership Team

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Dave Girouard
Founder & CEO
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Paul Gu
Co-Founder
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Company data provided by crunchbase