Top Senior Level Software Engineer Jobs in San Francisco, CA

As a Senior Software Engineer, you'll design and build scalable AI infrastructure, implement systems for advanced workloads, and own features end-to-end while collaborating across teams.

Design, build, test, deploy, and review secure, scalable Salesforce solutions using Apex, Lightning Web Components, Flow, and Platform Events. Develop REST and SOAP integrations, translate client requirements into technical designs, advise implementation consultants, troubleshoot issues, and support client engagements. The role also requires documentation, code reviews, AI-assisted development, Agile collaboration, and a thorough handoff at the end of the contract.

Build and scale full-stack software for employer and Employee Assistance Program mental health benefits. Own employer-facing portals and patient/provider workflows involving eligibility, authorization, and billing. Lead technical projects, design distributed systems, mentor engineers, conduct code reviews, and collaborate cross-functionally. The role uses modern full-stack technologies and may involve LLM features, cloud infrastructure, containerization, and database performance optimization.

Develop and maintain SBS Distribution Tools software using C#, .NET, and cloud APIs. Responsibilities include feature development, bug fixes, testing, peer reviews, CI/CD support, enterprise-system integration, customer-specific configuration, technical-debt reduction, Scrum participation, and mentoring. The role collaborates with product management, QA, delivery teams, and developers while supporting software used by utility and energy infrastructure organizations.

Build and operate production CX applications, agentic workflows, MCP servers, enterprise integrations, and AWS infrastructure. Develop secure Python and TypeScript applications, maintain the agent harness, implement testing and observability, and support CI/CD. Partner with Customer Experience teams to prototype and productionize solutions, document architecture and handoffs, mentor others, and contribute to GitLab's engineering and AI development practices.

Build and operate blockchain network infrastructure connecting protocols such as Bitcoin and Ethereum to Coinbase services. Design reliable APIs, SDKs, data contracts, observability, and SLOs while leading multi-quarter chain integrations, re-architecture, and migration initiatives. Develop high-throughput distributed systems, decompose legacy architectures into microservices, improve latency, reliability, and cost, and participate in on-call ownership.

Supports enterprise asset management data migration and system integration initiatives involving IBM Maximo. Responsibilities include analyzing source and target data, coordinating migration workstreams, executing migration strategies, developing integration objects and interfaces, validating exchanged data, and conducting quality reviews. The role requires expertise in Maximo Integration Framework services, data governance, integration architecture, and large-scale data management, with potential federal Public Trust clearance requirements.

As a Senior Software Engineer on the AI Platform Team, you'll design and build AI infrastructure, write high-quality code, mentor others, and solve complex challenges within the organization.

Design, implement, and maintain scalable Java-based software solutions. Collaborate across teams through the SDLC, drive feature development, maintain CI/CD and deployment automation, support operations and monitoring, perform code reviews, and ensure system security, performance, and best practices.

As a Staff Software Engineer, lead the evolution of delivery architecture, implement frameworks for quality and scalability, mentor engineers, and ensure alignment with strategic objectives while solving complex business challenges.