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Senior Backend Developer Python Jobs in San Francisco, CA

Australia-Employment

Senior Backend Engineer

San Carlos, CA · On-site

$100 - $160/hr

  • Medical

  • Dental

  • Vision

  • Life

Senior Backend Engineer $100000 - $160000 per year | San Carlos, CA | Hybrid | Permanent Science ... Leveraging Python for backend development and data processing tasks. * Utilizing Redis for caching ...

New

LiteLLM AI Gateway

Senior Backend Engineer

San Francisco, CA · On-site

$200K - $260K/yr

  • Medical

  • Dental

  • Vision

Senior Backend Engineer LiteLLM is the world's most popular AI Gateway, trusted by top companies ... Bachelor's or Master's in Computer Science or related field * 1+ years of experience with Python ...

Sunny Health AI Inc.

Senior Backend Engineer

San Francisco, CA · On-site

$120 - $150/hr

  • Medical

  • Dental

  • Vision

  • Retirement

We're seeking a Senior Backend Engineer to design, build, and scale secure, enterprise-grade ... Proficiency with at least one additional backend language (e.g., Go, Node/TypeScript, Python, or ...

New

Addison Group

Sr. Backend Engineer

San Ramon, CA · On-site

$65 - $75/hr

  • Medical

  • Dental

  • Vision

  • Retirement

Title : Sr. Backend Engineer Location : San Ramon, CA Pay : $65-75/hr Job Type : 6 Month Contract ... React, TypeScript · Backend: o Python (API platform, AWS Lambda, dynamic DBs) o Node.js, ...

Addison Group

Sr. Backend Engineer

San Ramon, CA · On-site

$65 - $75/hr

  • Medical

  • Dental

  • Vision

  • Retirement

Title : Sr. Backend Engineer Location : San Ramon, CA Pay : $65-75/hr Job Type : 6 Month Contract ... React, TypeScript · Backend: o Python (API platform, AWS Lambda, dynamic DBs) o Node.js, ...

Addison Group

Sr. Backend Engineer

San Ramon, CA · On-site

$65 - $75/hr

  • Medical

  • Dental

  • Vision

  • Retirement

Title : Sr. Backend Engineer Location : San Ramon, CA Pay : $65-75/hr Job Type : 6 Month Contract ... React, TypeScript • Backend: o Python (API platform, AWS Lambda, dynamic DBs) o Node.js, ...

PB consulting

Senior Java Backend Developer

Woodside, CA · On-site

$144K - $188K/yr

We are seeking an experienced Senior Java Backend Developer to design, develop, and maintain ... Python scripting experience. * Experience with Docker, Kubernetes, and container orchestration.

Hedra

Senior Backend Engineer

San Francisco, CA · On-site

$175K - $275K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

As a Senior Backend Engineer , you will design, build, and deploy the backend services that power ... Experience developing scalable services using Python, using frameworks such as FastAPI and Pydantic

PB consulting

Senior Java Backend Developer

San Mateo, CA

$137K - $178K/yr

We are seeking an experienced Senior Java Backend Developer to design, develop, and maintain ... Python scripting experience. * Experience with Docker, Kubernetes, and container orchestration.

LiteLLM

Senior Backend Engineer

San Francisco, CA · On-site

$100 - $130/hr

  • Medical

  • Dental

  • Vision

... we're looking for a Senior Backend Engineer to help us build rock‑solid guardrails and ... Bachelor's or Master's in Computer Science or related field. * 1+ years of experience with Python ...

PB consulting

Senior Java Backend Developer

Hayward, CA

$138K - $179K/yr

We are seeking an experienced Senior Java Backend Developer to design, develop, and maintain ... Python scripting experience. * Experience with Docker, Kubernetes, and container orchestration.

PB consulting

Senior Java Backend Developer

Belmont, CA · On-site

$145K - $189K/yr

We are seeking an experienced Senior Java Backend Developer to design, develop, and maintain ... Python scripting experience. * Experience with Docker, Kubernetes, and container orchestration.

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How much do senior backend developer python jobs pay per year?

As of Aug 19, 2026, the average yearly pay for senior backend developer python in San Francisco, CA is $174,644.00, according to ZipRecruiter salary data. Most workers in this role earn between $171,400.00 and $197,300.00 per year, depending on experience, location, and employer.

What does a senior backend developer Python do?

A Senior Backend Developer Python designs, builds, and maintains the server-side logic and databases for web applications, primarily using the Python programming language. They are responsible for ensuring high performance, responsiveness, and security of applications, integrating with front-end elements, and working closely with other developers and stakeholders. Additionally, they often mentor junior developers, review code, and contribute to architectural decisions to ensure scalable and robust backend systems.

What are the key skills and qualifications needed to thrive as a senior backend developer Python?

To thrive as a Senior Backend Developer Python, you need deep expertise in Python programming, software architecture, and experience with databases and API development, usually supported by a computer science degree and several years of professional coding experience. Familiarity with frameworks like Django or Flask, cloud platforms (e.g., AWS, Azure), and version control systems such as Git is typically expected, along with knowledge of containerization tools like Docker. Strong problem-solving skills, collaboration, and clear communication set top performers apart in this role. These skills ensure the development of robust, scalable backend systems that meet business needs and support seamless integration with other technologies.

What are some common challenges faced by senior backend developers working with Python, and how can they be addressed?

Senior Backend Developers working with Python often encounter challenges such as ensuring high performance and scalability of applications, especially when dealing with large volumes of data or high user traffic. Managing dependencies and maintaining clean, modular codebases can also be demanding in complex projects. These challenges are typically addressed by leveraging advanced Python frameworks, implementing robust testing practices, and collaborating closely with DevOps and frontend teams to optimize system architecture and deployment pipelines. Continuous learning and staying updated with best practices in Python and backend development are also key to overcoming these obstacles.

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

AspectSenior Backend Developer PythonBackend Developer Python
Required Experience5+ years, leadership skills1-3 years, foundational skills
CertificationsRelevant certifications (e.g., AWS, Python)Optional, entry-level certifications
Work EnvironmentDesigning architecture, mentoringImplementing features, coding
ResponsibilitiesSystem design, team coordinationCode development, bug fixing

The main difference between a Senior Backend Developer Python and a Backend Developer Python lies in experience, responsibilities, and leadership. Senior developers typically lead projects and mentor others, while backend developers focus on coding and feature implementation. Both roles require strong Python skills and relevant certifications, but senior roles demand more experience and strategic involvement.

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The top searched job categories for Senior Backend Developer Python jobs in San Francisco, CA are:

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Cities near San Francisco, CA with the most Senior Backend Developer Python job openings:

Senior Backend Developer Python jobs near you

Senior Backend Engineer (Python)

Phonely

San Francisco, CA • On-site

Full-time

Re-posted 8 days ago

Job description

Job Summary:
Phonely is a fast-growing company focused on revolutionizing voice AI for businesses. They are seeking a Senior Backend Engineer to build and maintain Python-based systems that drive voice AI interactions, ensuring high performance and reliability.
Responsibilities:
• Build and maintain Python-based state systems that drive what the voice AI says and does across complex, real-time conversations.
• Integrate and orchestrate multiple LLM providers, including prompt design, tool/function calling, routing, and fallbacks.
• Write clean, maintainable, high-performance Python code, leveraging asyncio, OOP, and best practices.
• Write automated tests and validation suites to ensure correctness, resilience, and safe iteration of agent logic and state transitions.
• Monitor production systems, debug agent behavior, and continuously improve reliability and conversation quality.
• Implement comprehensive metrics, logging, and alerting to validate correctness, detect failures early, and maintain extremely high availability.
• Design database schemas, optimize queries, and operate both SQL and NoSQL databases in production.
• Build and operate authentication and authorization mechanisms with strong security guarantees.
• Design and build microservices-based architectures.
Qualifications:
Required:
• 5+ years writing python, experience writing async web apps using fast api, testing frameworks
• Understanding of LLMs, APIs, Cloud, CI/CD pipelines
• Comfortable with understanding technical specifications
• Understanding of good architecture, security practices
• Strong technical and communication skills
• Experience with AWS & Kubernetes
Company:
Phonely provides an AI-powered voice platform that automates phone interactions for businesses through virtual agents. Founded in 2023, the company is headquartered in San Francisco, USA, with a team of 11-50 employees. The company is currently Early Stage.

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