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Senior Python Startup Jobs in California (NOW HIRING)

Senior Software Engineer (Python), Mortgage

San Francisco, CA · On-site +1

$144K - $190K/yr

  • Medical

  • Dental

  • Vision

  • PTO

Think of it like joining a startup within a startup! As a Senior Software Engineer on the Truework ... Proficiency in Python and Javascript (or similar languages/frameworks) * Experience developing ...

Senior Support Engineer

San Francisco, CA · On-site

$120K - $170K/yr

... Python experience Startup experience and comfort working in a fast-moving environment Excellent communication skills-you'll work directly with customers on onboarding and technical issues Comfortable ...

Senior Software Engineer

San Francisco, CA · Hybrid

$180K - $220K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

High About the Company The Company is a small, fast-paced startup in the Creator Tech industry. The ... B alance frontend (React/TypeScript) and backend (Python) responsibilities * C ollaborate closely ...

Senior Software Engineer

San Francisco, CA · On-site

$180K - $220K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

High About the Company The Company is a small, fast-paced startup in the Creator Tech industry. The ... backend (Python) responsibilities - Collaborate closely with the team to deliver impactful ...

Senior/Staff Engineer

San Francisco, CA · On-site

$200K - $280K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

React - Backend: Python - Infrastructure: AWS, ECS - Tools: GitHub, Linear, Slack, Notion ... Morgan) - Startup experience (Seed/Series A, 3-4 years) - Previous experience at high-growth ...

Senior/Staff Engineer

San Francisco, CA · On-site

$200K - $280K/yr

  • Medical

  • Dental

  • Vision

  • PTO

B ackend: Python * I nfrastructure: AWS, ECS * T ools: GitHub, Linear, Slack, Notion ... N o startup experience Ideal Companies * S tripe * R amp * B rex * P laid * R obinhood Interview ...

Senior Software Engineer

San Francisco, CA · On-site

$225 - $250/hr

  • Medical

  • Dental

  • Vision

  • PTO

... AI startup building the operating system for global commodities trading. As a Senior Software ... Develop full-stack solutions using technologies such as React, TypeScript, Python, Go, and Node.js.

Senior Support Engineer

San Francisco, CA · On-site

$120K - $170K/yr

Senior Support Engineer | San Francisco (Relocation Available) I'm partnering with a fast-growing ... Python experience • Startup experience and comfort working in a fast-moving environment • ...

Senior ML Engineer

San Francisco, CA · Remote

$180K - $240K/yr

  • Medical

  • PTO

Career Renew is recruiting for one of its clients a Senior Machine Learning Engineer - this is a ... You're an applied AI engineer who thrives in startup environments, writes clean Python, and can ...

Senior Security Engineer

San Francisco, CA · On-site

$220K - $260K/yr

  • Medical

  • Dental

  • Vision

Senior / Staff Security Engineer | AI Infrastructure Startup I'm working with a fast-growing AI ... Strong programming ability in Python and/or Rust * Solid computer science and backend engineering ...

Senior Security Engineer

San Francisco, CA · On-site

$220K - $260K/yr

  • Medical

  • Dental

  • Vision

Senior / Staff Security Engineer | AI Infrastructure Startup I'm working with a fast-growing AI ... Strong programming ability in Python and/or Rust * Solid computer science and backend engineering ...

Sr. Product Manager

San Francisco, CA

$149K - $196K/yr

Launched in 2012, Koding, a fast-growing startup (with over a million users), is seeking a Senior ... Python...the list goes on! You can experiment with installing/configuring/hacking Wordpress ...

About the role Our client is a well‑funded AI startup building production‑grade ML ... Strong Python and PyTorch (or JAX) fundamentals * Experience with distributed training, GPU ...

Showing results 21-40

Senior Python Startup information

What is the difference between Senior Python Startup vs Python Developer?

AspectSenior Python StartupPython Developer
CredentialsBachelor's or higher in CS, experience in startupsBachelor's in CS or related field, some experience
Work EnvironmentFast-paced startup, cross-functional teamsEstablished companies or startups, team-based
Industry UsageTech startups, innovative projectsVaried industries, software development
Search IntentSenior roles, startup environment, advanced skillsEntry to mid-level roles, Python programming

Senior Python Startup roles typically require more experience, leadership skills, and familiarity with startup environments. Python Developers may have similar technical skills but often at an earlier career stage and in more established settings. The main difference lies in experience level and work context, with Senior Python Startup positions emphasizing leadership and startup agility.

What are the most commonly searched types of Python Startup jobs in California? The most popular types of Python Startup jobs in California are:
What cities in California are hiring for Senior Python Startup jobs? Cities in California with the most Senior Python Startup job openings:
Infographic showing various Senior Python Startup job openings in California as of August 2026, with employment types broken down into 2% Internship, 85% Full Time, 5% Part Time, 2% Temporary, and 6% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Senior Software Engineer (Python), Mortgage

Checkr

San Francisco, CA • On-site, Remote

$144K - $190K/yr

Full-time

Medical, Dental, Vision, PTO

Posted 20 days ago


Job description

About Checkr

Checkr is building the data platform to power safe and fair decisions. Established in 2014, Checkr's innovative technology and robust data platform help customers assess risk and ensure safety and compliance to build trusted workplaces and communities. Checkr has over 100,000 customers including DoorDash, Coinbase, Lyft, Instacart, and Airtable.

About the Role

Truework, recently acquired by Checkr, provides access to crucial employment and income information needed for mortgage loans, apartment rentals, background checks, and more. We are disrupting a $5B+ industry, dominated by legacy incumbents, with a better product and intense customer focus. Within Checkr, Truework operates independently, allowing rapid iteration while also being able to leverage the strengths and assets from our core business. Think of it like joining a startup within a startup!

As a Senior Software Engineer on the Truework team you will help develop and maintain the platform that's used by 8 of the top 10 mortgage lenders in the US. At Checkr, Engineers take ownership and responsibility on all aspects of Product development from leading projects, working with product managers and customers to define and implement features, to collaborating with our sales and marketing teams on launching and scaling products. You'll have a lot of autonomy and will be successful if you have high agency and a keen sense of craftsmanship for yourself and others.

Most of the work we need to do is backend-oriented, but we are open to candidates from a broad set of roles (full stack, backend, QA engineers, SREs, etc.) if you meet our requirements. 

What you'll do

  • Be an independent individual contributor who can solve problems and deliver high-quality solutions with minimal/high-level oversight and a high level of ownership
  • Bring a customer-centric, product-oriented mindset to the table - collaborate with customers and internal stakeholders to resolve product ambiguities and ship impactful features
  • Partner with engineering, product, design, and other stakeholders in designing and architecting new features
  • Experimentation mindset - autonomy and empowerment to validate a customer need, get team buy-in, and ship a rapid MVP
  • Quality mindset - you insist on quality as a critical pillar of your software deliverables
  • Analytical mindset - instrument and deploy new product experiments with a data-driven approach
  • Deliver performant, reliable, scalable, and secure code capable of supporting Truework's significant scale
  • Monitor, investigate, triage, and resolve production issues as they arise for services owned by the team

What you bring

  • 5+ years of software development experience
  • Bachelor degree (or equivalent education/training)
  • Proficiency in Python and Javascript (or similar languages/frameworks)
  • Experience developing RESTful APIs
  • Strong communication and documentation skills
  • A strong sense of ownership from feature design through production release
  • A desire to collaborate with external stakeholders
  • An eagerness to learn, collaborate, improve, innovate, and have fun

What you'll get

  • A fast-paced and collaborative environment
  • Learning and development allowance
  • Competitive compensation and opportunity for advancement
  • 100% medical, dental, and vision coverage
  • Up to $25K reimbursement for fertility, adoption, and parental planning services
  • Flexible PTO policy
  • Monthly wellness stipend, home office stipend