Top Senior Backend Engineer Jobs in San Francisco, CA

The Senior Backend Engineer will enhance the backend platform by developing scalable services and APIs, drive the software lifecycle, mentor others, and utilize AI tools to improve workflows.

Design and operate scalable, event-driven backend systems in Python to power agentic AI workflows and real-time financial infrastructure. Own APIs, data architecture, reliability primitives, and platform foundations while partnering with ML and product teams to productionize AI-native financial systems.

Design, build, and deploy backend services for creative tools. Integrate with AWS, ensuring scalable and secure Python code for event processing and APIs.

Lead development, testing, and migration of core banking systems. Shape technical architecture, translate product requirements into technical solutions, deliver scalable high-availability services, support integrations, and mentor the engineering team while owning project delivery.

As a Senior Backend Engineer, you'll build core systems for Postman's Cloud Platform, develop backend services using Java and Spring Boot, manage deployments across Kubernetes, and ensure scalability and performance.

As a Senior Backend Engineer, you'll architect and maintain core healthcare systems, ensuring efficient medication management, and work closely with various teams for improved patient outcomes.

Design and implement APIs and core services, build impactful features, mentor engineers, and enhance application quality for a mission-critical system.

The Senior Backend Engineer will enhance data integration infrastructure, manage internal systems, and collaborate with teams to execute engineering tasks for growth initiatives.

As a Senior Software Engineer, you'll own backend systems, mentor team members, and collaborate with product and design to build user-focused solutions.

Design, build, test, and maintain backend services and APIs for an insurance platform. Integrate external services and data providers, improve system stability, performance, and scalability, participate in architecture discussions, mentor teammates, and support internal tooling and deployment practices.

Design and build an EAV data model and schema-as-code platform, manage schema migrations, engineer AI tools, and mentor teams.

The Senior Backend Engineer will develop the Payroll product, overseeing the entire development cycle from design to deployment, in a microservices architecture.

Design, build, and maintain scalable backend services and APIs for commerce workflows using Python/Django. Improve reliability, performance, and observability, operate AWS deployments, work with PostgreSQL and event-driven architectures (SNS/SQS), modernize legacy systems, and support CI/CD, testing, and production troubleshooting.

As a Sr. Software Engineer, Backend, you will develop AI-powered solutions for clinical documentation and medical coding, collaborating with cross-functional teams to enhance SaaS products and deliver actionable insights for healthcare organizations.

As a Senior Backend Engineer at DuckDuckGo, you'll lead backend projects, mentor engineers, and develop AI-enhanced features for the company's privacy-centric product line.

As a Senior Backend Engineer, you'll design, develop, and optimize scalable backend systems, lead architecture projects, and contribute to a growing engineering team at an early-stage startup.

As a Senior Backend Engineer, you'll build infrastructure for AI agents, managing projects from concept to execution while ensuring code quality and system design.

The Senior Backend Engineer II will design, build, and maintain backend services for financial workflows, collaborating with product and engineering teams to enhance system reliability and performance.

As a Senior Backend Engineer, you will design and develop software solutions for identity verification, mentor junior engineers, and ensure system scalability, security, and high performance.

Join Zencastr as a Senior Backend Engineer, focusing on building scalable applications using Node.js and Typescript, while emphasizing performance and code quality.

The Senior Backend Engineer will design and scale backend guardrails, enhance observability tools, ensure error transparency, and maintain compliance for high-volume traffic systems.

Design and build scalable infrastructure while mentoring teammates and collaborating on AI and product solutions. Drive best engineering practices.

Design, build, and operate scalable, secure backend services and APIs for a membership ecosystem at 100M+ scale. Own reliability (99.9%+), lead architecture, drive incident response and long-term fixes, mentor engineers, and collaborate cross-functionally while using AI-native development practices.

Design and implement core backend systems for growth features, integrate with financial providers, enhance observability, and contribute to user-facing experiences while collaborating cross-functionally.

The Senior Backend Engineer will develop, scale, and maintain payment infrastructure, distributed systems, and backend services while collaborating with product and data science teams.