Top Senior Software Engineer Jobs in Sacramento, CA

Lead end-to-end development of modern frontend initiatives using React and Electron. Design scalable architecture, improve performance and test coverage, resolve production issues, influence technical decisions, and collaborate with Product, Design, and Backend teams. The role includes mentoring engineers, maintaining code quality, supporting observability and incident response, and building secure, high-quality customer-facing payment and form workflows.

Develop and support scalable Python services, APIs, and event-driven systems for digital freight pricing and booking. Build experimentation frameworks, AI-assisted pricing harnesses, validation guardrails, real-time platforms, and machine-learning integrations. Lead architecture decisions, ensure security and reliability, mentor engineers, and collaborate across product, operations, revenue management, data science, and engineering teams.

Design, develop, test, deploy, and maintain secure cloud-native applications using Python, React, Azure, REST APIs, and microservices. Build and integrate AI capabilities including LLMs, RAG, agentic workflows, and Azure OpenAI services. Apply CI/CD, observability, secure SDLC, and responsible AI practices. Collaborate with product, architecture, UX, DevOps, and security teams, troubleshoot production issues, mentor engineers, review code, and influence technical direction in an agile environment.

Develop and deploy cloud-native applications in Azure using Python, contribute to architecture and design, enhance existing software, conduct testing and code reviews, support CI/CD and DevOps practices, troubleshoot production issues, and collaborate with stakeholders. The role also involves defining technical solutions, evaluating scalability and performance trade-offs, partnering with solution architects, participating in on-call support, and mentoring junior software engineers.

Lead platform and infrastructure architecture for scalable AI workloads. Design resilient distributed systems, foundational platform services, and cloud environments; solve complex infrastructure challenges; mentor junior engineers; and collaborate with product, research, and security teams to improve reliability, performance, developer experience, and operational efficiency.

Develop cloud-native B2B SaaS platform services and user interfaces using C#, .NET, React, databases, and microservices. Responsibilities include architecture and design, hands-on feature development, code reviews, API and third-party integrations, technical documentation, debugging, proof-of-concepts, security and compliance implementation, and technical support. Collaborate within agile scrum teams and with product stakeholders to deliver scalable, secure, maintainable enterprise solutions.

Build enterprise control-plane products for managing Hightouch deployments at scale. Responsibilities include developing roles, permissions, and access control; creating change-management tools for evolving data models and warehouses; and helping customers understand and optimize warehouse performance and costs. The role requires backend and distributed-systems architecture, asynchronous workflows, scalability, reliability, product thinking, and engagement with product specifications.

Design, build, and optimize distributed systems powering large-scale data synchronization. Responsibilities include improving sync speed, developing real-time streaming capabilities, scaling high-volume and low-latency systems, troubleshooting customer scaling challenges, and supporting multi-region, multi-cloud infrastructure and data residency requirements. The role involves end-to-end project ownership, customer collaboration, system architecture, and reliability improvements.

Design and evolve scalable referral, partner data, and patient booking systems. Lead complex technical projects across teams, make architecture and API decisions, improve security, performance, reliability, and scalability, and mentor engineers. Collaborate with product, design, engineering leadership, partners, and stakeholders while using AI-assisted development tools such as Claude Code to improve delivery velocity and quality.

Owns the design, development, testing, and optimization of safety-critical vehicle firmware on resource-constrained platforms. Responsibilities include RTOS applications, communication architectures, bootloaders, device drivers, board and SoC bring-up, automated testing, debugging, and production deployment. The role leads cross-functional projects, mentors engineers, conducts code reviews, and establishes embedded engineering standards for reliable autonomous transit vehicles.

Build and scale secure backend services and platform infrastructure for an enterprise AI agent platform. Lead architecture and code reviews, infrastructure automation, CI/CD, observability, reliability, and performance initiatives. Collaborate with product and research teams to deploy and optimize production ML/NLP workloads, improve developer experience, and mentor engineers while establishing strong engineering and DevOps practices.

Design and build scalable Python applications, APIs, microservices, and AI/LLM workflows using AWS, Docker, Kubernetes, and related technologies. Develop agentic orchestration capabilities, prototypes, and production systems; perform testing, code reviews, architectural design, troubleshooting, and security-focused engineering. Collaborate remotely in an Agile environment while translating data science outputs into secure, maintainable products.

Design and build Seeq’s internal platform, including infrastructure, services, multi-tenant Kubernetes clusters, system interfaces, and secure deployment capabilities. Improve scalability, reliability, software delivery, and infrastructure cost and performance. Lead migrations, integrate security practices, architect distributed systems, collaborate cross-functionally, and mentor engineers while remaining hands-on at Staff or Principal scope.

Build and operate site reliability engineering practices for regulated, cloud-based production environments. Responsibilities include observability, SLIs/SLOs, incident response, infrastructure automation, Kubernetes and cloud operations, disaster recovery exercises, compliant deployments, root-cause analysis, and reliability improvements. The role partners with engineering, product, laboratory, compliance, and quality teams while mentoring peers and helping establish the organization’s SRE culture.

Lead design, implementation, and deployment of core platform tooling enabling secure, cloud-native application delivery. Integrate with defense systems, own architecture, mentor engineers, contribute to open source, maintain documentation, and participate in a shared 24x7 on-call rotation.

Build and operate Numeral’s public API, MCP server, billing and ERP integrations, infrastructure, data pipelines, and platform services. Own projects from design through production, improve observability and reliability, automate deployment workflows, and contribute to architecture decisions. The role requires strong backend engineering, distributed systems knowledge, cloud and container experience, and a customer-focused approach to dependable financial automation.

Build and scale AI-enabled developer experience systems, including CI/CD platforms, deployment safeguards, observability, automated response workflows, and multi-agent orchestration. Reduce developer toil and technical debt while improving software delivery speed, safety, reliability, and production quality. Partner with engineering teams to adopt AI-native delivery practices and convert emerging capabilities into scalable internal platforms.

Lead iOS engineering for the Subscription Growth team, building and improving premium subscription experiences, paywalls, upsell experiments, and promotional offers. Develop high-quality, testable solutions, refactor architecture, support automated app builds and releases, and collaborate across iOS, Android, web, backend, and infrastructure teams. Provide technical leadership, mentorship, and guidance on design, security, testing, deployment, and rapid experimentation.

Build and operate Numeral’s platform services, public API, MCP server, ERP and billing integrations, infrastructure, data pipelines, and developer interfaces. Own projects from technical design through production, improve observability and reliability, automate deployment workflows, and support scalable background jobs and APIs. Collaborate with product and engineering teams while applying distributed-systems principles and maintaining accurate, dependable financial-data workflows.

Designs and maintains automated and manual testing strategies, test suites, and test plans. Identifies and tracks defects, performs API, load, and performance testing, and contributes to feature development and bug fixes. Provides testing guidance, participates in code reviews and planning, supports release quality decisions, and promotes software quality across cross-functional teams.

Design, build, and own production-grade platform subsystems for Stacklok Enterprise, writing Go software that runs on customer Kubernetes environments. Collaborate with leadership, mentor engineers, support customer onboarding and troubleshooting, contribute to the open-source ToolHive project, and translate customer feedback into product improvements. The role also involves improving engineering workflows through AI-assisted development and owning platform areas from design through ongoing production operations.

Leads software design and development for Windows Core OS services and platforms. Partners with stakeholders to define requirements, identifies dependencies, creates design documents, and mentors engineers in producing maintainable code. Drives cross-product project and release planning, serves as a designated responsible individual, participates in on-call operations, and improves system availability, reliability, observability, efficiency, and performance.

Lead the technical vision, architecture, and delivery of Toast’s pricing engine across multiple teams. Design and operate highly available distributed systems, APIs, databases, and event-driven services at scale. Serve as the pricing domain expert, improve correctness and performance, lead incident response and reliability initiatives, mentor engineers, establish operational excellence, and align technical priorities with Product and engineering leadership.

Build and operate database and storage platform software, including services, APIs, developer tools, migrations, and lifecycle automation. Solve database scaling, performance, reliability, and availability problems across distributed systems, cloud infrastructure, and backend services. Partner with engineering teams on schemas and queries, lead technical projects, modernize platforms, participate in incident response, and use AI-assisted tools in development.

Lead backend engineering strategy for Affirm’s search and recommendation platform. Design and launch highly available distributed systems, guide technical architecture and execution, improve team operations and reliability, establish engineering quality standards, collaborate with product, design, and analytics, and mentor engineers. The role focuses on search, recommendations, consumer shopping experiences, monetization, and scalable platform foundations.