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Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands - including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank - to transform how they serve customers and grow their businesses. As a Software Engineer, Infrastructure at Sierra, you will be responsible for designing, building, and maintaining the core systems that make our AI platform possible.

Sierra AI

Software Engineer, Infrastructure

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Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands - including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank - to transform how they serve customers and grow their businesses. You take ambiguous, cross-cutting problems from first principles to production and go deep when needed: threat modeling a distributed system, tracing an authorization decision across services, or following an investigation from weak signal to root cause.

Security Engineer

Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands - including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank - to transform how they serve customers and grow their businesses. Customer Obsession: We deeply understand our customers' business goals and relentlessly focus on driving outcomes, not just technical milestones.

Software Engineer, Site Reliability (Sre)

These are some examples of projects that engineers on our team have worked on recently: Building innovative multimodal experiences: Spearhead cross-cutting initiatives, partnering with the voice and Experience SDK teams to bring to life embedded voice mode in mobile apps. Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands - including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank - to transform how they serve customers and grow their businesses.

Software Engineer, Agent - Travel , Transportation & Hospitality

Our financial services team partners closely with these organizations to set their AI strategies and build modern tools that carefully handle moments when a person's private anxiety meets an institution's procedural muscle - the instant before a family learns whether they are pre-approved for a mortgage; the claustrophobic half hour after someone notices a fraudulent charge; the frustrating experience of losing a card and needing to order a new one. Our financial services customers span systemically important banks, neobanks committed to building more delightful banking software (1 in 3 of the world's leading banks use Sierra!), insurers that provide protection for life's most challenging moments, vertically integrated ecosystems like Rocket Companies, and more.

Software Engineer, Agent - Financial Services

You'll own major workstreams tied to our largest customer onboardings and most ambitious product bets, working alongside engineers, product managers, designers, and financial audit subject matter experts who are all deeply embedded in the problem. We’re based in San Francisco, CA and backed by top investors including Growth Equity at Goldman Sachs Alternatives, Bessemer Venture Partners, 8VC, Floodgate, Y Combinator, DNX Ventures, Global Founders Capital, Justin Kan, Elad Gil, and more.

Fieldguide

Senior Software Engineer, Audit (Full Stack)

You will progress model intelligence through the interfaces, datasets, and evaluation tooling you build, combining product sense, data science, and engineering. Turn raw model outputs and data into clear, inspectable UIs — owning a domain end-to-end, with craft and judgment over simple optimization.

TypeSafe AI

Model Capabilities Engineer

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You will eliminate build friction, prevent dependency hell, and architect secure Over-The-Air (OTA) update mechanisms to safely deploy software to our edge vehicle fleet. Our work only matters if it serves others, and we know that meaningful progress depends on the trust of the people we serve and the strength of our team — so we invest in both, creating an environment where you can do your best work and grow.

Atoms

Staff Developer Experience Engineer

Experience working directly with hardware OEMs, infrastructure vendors, procurement teams, and facilities partners on capacity planning, infrastructure deployments, and capital expenditure decisions. You should be comfortable working across hardware, software, networking, storage, and data-center infrastructure, bringing deep technical expertise and the ability to lead complex engineering initiatives.

Pronto

Staff Engineer, Infrastructure – HPC & AI Compute

These are some examples of projects that engineers on our team have worked on recently: Design and build AI agents for large telecommunications and media companies that consistently outperform human agents in managing subscription churn. Partner with large enterprises and cutting-edge startups: You'll work directly with leaders at some of the world's largest enterprises to understand their most pressing business challenges, and build AI agents that transform how they operate at scale.

Software Engineer, Agent

Software Engineer, Agent (Spanish Speaking)

These are some examples of projects that engineers on our team have worked on recently: Abstracting complex commerce systems into packages: Modernize the sprawl of order management, fulfillment, returns, and warranty systems behind the large retailer ecosystem by creating scalable packages that optimize looking up and updating orders for customers - from Shopify storefronts to decades-old homegrown Order Management System (OMS) and claims platforms. Building production-grade agents at a truly global scale: Sierra's retail agents serve some of the world's largest global brands, handling traffic at unprecedented volumes during the busiest times of the year and across all geographic locales.

Software Engineer, Agent - Retail

Job level and actual compensation will be decided based on factors including, but not limited to, individual qualifications objectively assessed during the interview process (including skills and prior relevant experience, potential impact, and scope of role), market demands, and specific work location. You will be developing high-performance client-side systems in C++/WebAssembly, extending the multiplayer protocols that make collaborative design possible, and building out the communications layer between C++ and Javascript.

YEAR

FIGMA

Software Engineer - C++

Our Financial Services team partners closely with these organizations to set their AI strategies and build modern tools that carefully handle moments when a person's private anxiety meets an institution's procedural muscle-the hours after a family discovers their home has been damaged by a wildfire and begins filing a claim; the difficult conversation following the loss of a loved one as beneficiaries navigate a life insurance claim; the frustration of dropping a phone, shattering the screen, and trying to quickly understand coverage and arrange for a repair or replacement. Our financial services customers span insurers that provide protection for life's most challenging moments, systemically important banks, neobanks committed to building more delightful banking software, vertically integrated ecosystems like Rocket Companies, and more.

Software Engineer, Agent - Insurance

Strong software development skills in web, mobile, or other applications, including navigating unfamiliar codebases, writing and testing code, and learning new languages and frameworks, with working knowledge of APIs, authentication, Git, and developer tooling to troubleshoot integrations and follow customer code review and deployment processes. Job level and actual compensation will be decided based on factors including, but not limited to, individual qualifications objectively assessed during the interview process (including skills and prior relevant experience, potential impact, and scope of role), market demands, and specific work location.

Field Engineer

Software Engineer, Agent (New Grad 2027)

Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands - including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank - to transform how they serve customers and grow their businesses. You'll gain hands-on experience contributing to the design and development of AI agents, shipping features, and learning from real-world use cases at scale.

Software Engineer Intern, Agent (Summer 2027)

Background in areas such as growth engineering, frontend platform work (build systems, web performance, shared UI/component infrastructure), developer tooling, billing and payments infrastructure, or extensibility platforms (plugins, APIs, widgets). You'll take on complex technical challenges across the stack, building intuitive user experiences, optimizing performance in real-time collaborative systems, and designing secure, reliable, and scalable systems to support Figma's rapid growth and global expansion.

Software Engineer - Full Stack

Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands - including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank - to transform how they serve customers and grow their businesses. That includes our multi-tenant environments, where most of our customers and data live, and our isolated single-tenant environments for highly regulated enterprises.

Software Engineer, Cloud Infrastructure

As a Forward Deployed Infrastructure Engineer at Sierra, and a founding member of this function, you will own the end-to-end lifecycle of customer deployments, while helping define how Sierra's AI platform is deployed and operated across enterprise environments. Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands - including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank - to transform how they serve customers and grow their businesses.

Tooling Engineer Jobs in Walnut Creek, CA

Software Engineer, Infrastructure Sierra AI

Security Engineer Sierra AI

Software Engineer, Site Reliability (Sre) Sierra AI

Software Engineer, Agent - Travel , Transportation & Hospitality Sierra AI

Software Engineer, Agent - Financial Services Sierra AI

Senior Software Engineer, Audit (Full Stack) Fieldguide

Model Capabilities Engineer TypeSafe AI

Staff Developer Experience Engineer Atoms

Staff Engineer, Infrastructure – HPC & AI Compute Pronto

Software Engineer, Agent Sierra AI

Software Engineer, Agent (Spanish Speaking) Sierra AI

Software Engineer, Agent - Retail Sierra AI

Software Engineer - C++ FIGMA

Software Engineer, Agent - Insurance Sierra AI

Field Engineer FIGMA

Software Engineer, Agent (New Grad 2027) Sierra AI

Software Engineer Intern, Agent (Summer 2027) Sierra AI

Software Engineer - Full Stack FIGMA

Software Engineer, Cloud Infrastructure Sierra AI

Deployed Infrastructure Engineer Sierra AI

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