Upstart · 5 hours ago
Senior Software Engineer, Machine Learning Simulations
United States
Full-time
Remote
Senior Level
$167K/yr - $231K/yr
6+ years expUpstart is a leading AI lending marketplace dedicated to reducing the cost and complexity of borrowing for all Americans. The Senior Software Engineer will be responsible for building an MLOps platform to support machine learning model inference and developing a marketplace simulation platform to enhance innovation across teams.
Artificial Intelligence (AI)AutomotiveConsumer LendingCreditFinancial ServicesFinTechLendingMachine LearningPersonal Finance
Responsibilities
Build, maintain, and optimize Upstart’s next-generation machine learning and simulation platform, enabling increased scale, performance, and confidence in decisioning
Develop high-quality software applications that enable machine learning models to be applied to the ever-evolving needs of the business
Enable the modernization of our serving infrastructure, reducing inference latency to just a few seconds for our most complex models
Design and contribute to our simulation systems to more accurately reflect production environments, reducing simulation cost and enabling broader usage across teams
Communicate closely with cross-functional partners from ML, Engineering, Product, and Data Engineering teams, keeping all stakeholders informed
Mentor engineers across the team, sharing expertise on distributed systems, MLOps, and scalable architecture
Qualification
Required
6+ years of software engineering experience, including experience building and contributing to machine learning platforms, ML infrastructure, or adjacent large-scale data or model-serving systems
Experience building or contributing to platforms or systems that support machine learning model simulation
Experience building self-serve or configuration-driven tooling for internal stakeholders
Experience building and maintaining backend software services and APIs
Proficiency with some or many of the following: Python, Kotlin, Databricks, and AWS
Exhibits a growth mindset - you're not afraid to pick up new technologies that are best for the task, and learn from others
Ability to quickly comprehend and reiterate complex requirements from product or engineering leadership and translate those to both technical and non-technical stakeholders
Track record of successfully mentoring and developing other engineers around you while seeking out and appreciating constructive feedback
Preferred
Familiarity with model serving technologies like Ray, and experimentation frameworks
Proficiency with Flask, FastAPI, Metaflow, MLflow, gRPC, Kafka, Spark/PySpark, ETL/ELT, Redshift (or similar)
Excellent quantitative reasoning skills with interest in working at the intersection of engineering and machine learning
Strong sense of ownership and accountability for the quality and timely delivery of work
Proven ability to effectively analyze and solve complex problems
Excellent written and verbal communication skills with stakeholders, peers and product owners
Ability to thrive both in self-directed work environments and in collaborative settings, contributing positively to team dynamic
Benefits
Competitive compensation, including base pay, bonus opportunities, and annual equity grants that vest quarterly
Generous 401(k) plan with Upstart matching $2 for every $1 contributed, up to $15,000 per year
Employee Stock Purchase Plan (ESPP) with discounted stock purchase options for eligible employees
Affordable medical, dental, and vision coverage, with multiple plan options - Upstart covers 90% to 100% of the cost depending on the plans you choose
Health Savings Account contributions from Upstart for eligible plans
Income protection benefits, including company-paid Basic Life, AD&D, and Short- and Long-Term Disability coverage, with options to purchase supplemental coverage
Paid time off, sick and safe time, and company holidays
Paid family and parental leave to support caregiving and major life moments
Family-centered benefits through Carrot and Cleo, supporting fertility, parenthood, and caregiving
Employee Assistance Program (EAP) offering mental health support and life-centered resources
Financial wellness resources, including access to financial planning tools and a financial concierge service
Annual wellness allowance to support your physical and emotional well-being and personal development, based on what matters most to you
Annual productivity allowance to invest in relevant tools and resources you need to do your best work, no matter where you work from
Connection and community through team events and onsites, all-company updates, and employee resource groups (ERGs)
Onsite perks, including catered lunches and fully stocked micro-kitchens when working from one of our four offices, located in the Bay Area, Austin, Columbus, and New York City (opening Summer 2026!)
Company
Upstart
Upstart (NASDAQ: UPST) is a leading AI lending marketplace partnering with banks and credit unions to expand access to affordable credit.
1001-5000 employees
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 CompanyTotal Funding
$3.36BKey Investors
CastlelakeProgressiveRakuten
2025-11-06Post Ipo Debt· $1.5B
2025-09-05Post Ipo Debt· $320M
2025-08-12Post Ipo Debt· $600M
Leadership Team
Dave Girouard
Founder & CEO
Paul Gu
Co-Founder
Recent News
The Motley Fool
2026-01-23
Business Wire
2026-01-22
The Motley Fool
2026-01-03
Company data provided by crunchbase