Founding Software Engineer - Backend and Infrastructure unsiloed.aiFounding Software Engineer - Backend and InfrastructureSan Francisco, CaliforniaWhat you Will Do As a Founding Software Engineer, you will own the entire technical stack end-to-end, from core infrastructure and production systems to deployment, reliability, and developer experience. Architect, build, and scale core backend systems powering document intelligence and VLM-based workflows.
Software Engineer FaySoftware EngineerSan Francisco, California$185,000–$250,000 / yearThis role offers what many ambitious engineers are looking for: Top-tier teammates : We have an unusually talented and accomplished team of engineers who’ve held lead, staff, principal and director level roles in past jobs. Our b2b2c business-in-a-box solution empowers dietitians to deliver high-quality, affordable nutrition care, helps patients take control of their health, and enables payers to build healthier member populations.
Staff Software Engineer, Developer Experience Harvey, Inc.Staff Software Engineer, Developer ExperienceSan Francisco, CA$231,000–$340,000 / yearWork closely with engineering teams to gather feedback, evangelize best practices, and make the "paved road" a reality - empowering every Harvey engineer to move fast with confidence. The Developer Experience team is what keeps Harvey's fast growth momentum possible - the kind of fast where every week brings new products, new capabilities, and new challenges.
Senior Software Engineer, Cloud Infrastructure / SRE Oscar Health InsuranceSenior Software Engineer, Cloud Infrastructure / SRESan Francisco, CARemote$180,504–$236,911 / yearWe are responsible for architecting a world-class, resilient ecosystem using a modern stack centered on AWS/GCP, Terraform, and Kubernetes with developer focused tooling and CI/CD. Independently responsible for large or complex technology capabilities (set of components or services) within their team's domain or spanning multiple domains.
Senior Software Engineer - Integrated Payment Experience (IPX) FiservSenior Software Engineer - Integrated Payment Experience (IPX)Sunnyvale, CaliforniaThe Integrated Payment Experience (IPX) team builds and maintains the core software ecosystem powering these transactions—owning a portfolio of 20+ native Android applications, public SDKs, and integration microservices deployed across Clover POS terminals. Hands-on experience developing native apps or SEMI integrations for Clover POS hardware using Clover SDKs, Clover Connector, or REST Pay API (or experience with Verifone, Ingenico, Square, PAX).
Senior Backend Software Engineer, AI Observability & Evals Platform (LangSmith) LangChainSenior Backend Software Engineer, AI Observability & Evals Platform (LangSmith)San Francisco, CaliforniaToday, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together.
Senior Software Engineer (Frameworks), Javascript SDK SentrySenior Software Engineer (Frameworks), Javascript SDKSan Francisco, CA$155,000–$400,000 / yearYou'll be at the forefront, working on: A Universe of JavaScript Challenges: Dive deep into our extensive suite of JavaScript SDKs, with a broad focus on framework support spanning the modern JS ecosystem - from frontend frameworks like React, Vue, and their meta-frameworks Next.js and Nuxt, to server-side and edge runtimes like NestJS and Hono. A successful candidate's actual base salary (or hourly wage) amount will be determined by a variety of relevant factors including, without limitation, the candidate's work location, education, work and other relevant experience, skills, and job-related knowledge.
Software Engineer, Backend ServalSoftware Engineer, BackendSan Francisco, CaliforniaFounded in early 2024, Serval is already trusted by companies like Fox, Notion, Perplexity, Vercel, and Brex to automate high-volume, high-friction operational work across their organizations. Long term, we’re building the universal AI operations layer — a system of agents that sits across business functions and runs the workflows that keep modern companies moving.
NewSenior Software Engineer - Compute LambdaSenior Software Engineer - ComputeSan Francisco, CaliforniaOur investors notably include TWG Global, US Innovative Technology Fund (USIT), Andra Capital, SGW, Andrej Karpathy, ARK Invest, Fincadia Advisors, G Squared, In-Q-Tel (IQT), KHK & Partners, NVIDIA, Pegatron, Supermicro, Wistron, Wiwynn, Gradient Ventures, Mercato Partners, SVB, 1517, and Crescent Cove. The position works closely with various engineering teams across the company and contributes directly to Lambda’s ability to scale engineering productivity, maintain high delivery velocity, and support the company’s continued growth by making the right engineering workflows easier, faster, and more reliable.
Software Engineer, Developer Productivity OpenAISoftware Engineer, Developer ProductivitySan Francisco, CaliforniaFor unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. Work closely with various teams within OpenAI to understand their workflows, challenges, and needs, and ensure the tools and systems built by the Engineering Acceleration team address these requirements.
Senior Software Engineer, Developer Experience Harvey, Inc.Senior Software Engineer, Developer ExperienceSan Francisco, CA$175,000–$250,000 / yearWork closely with engineering teams to gather feedback, evangelize best practices, and make the "paved road" a reality - empowering every Harvey engineer to move fast with confidence. The Developer Experience team is what keeps Harvey's fast growth momentum possible - the kind of fast where every week brings new products, new capabilities, and new challenges.
Senior Software Engineer - Developer Experience & AI Enablement Grow TherapySenior Software Engineer - Developer Experience & AI EnablementSan Francisco, CA$200,000–$250,000 / yearWhat You'll Be Doing: Design and implement Grow's internal AI control plane and tooling ecosystem, including MCPs, AI skills frameworks, and secure connectors to internal systems such as our code, data warehouses, CRMs, finance tools, and internal databases. You'll Be a Good Fit If: You have 5+ years of experience in software engineering, platform engineering, or infrastructure roles with hands-on experience building AI-enabled systems (LLMs, skills, MCPs, orchestration frameworks, etc).
Senior Software Engineer, ML Platform ParafinSenior Software Engineer, ML PlatformSan Francisco, CA$220,000–$265,000 / yearThis role is critical to building reliable, scalable, and developer-friendly systems for model experimentation, training, evaluation, inference, and retraining that power underwriting and other ML-driven products for small businesses. As a Software Engineer, you'll design, build, and maintain the core abstractions and platforms that let data scientists ship high-quality models to production-safely and quickly.
Staff Software Engineer, Frontend Harvey, Inc.Staff Software Engineer, FrontendSan Francisco, CA$238,000–$290,000 / yearAs a Staff Software Engineer, Frontend at Harvey, you will own and lead engineering projects that define the user experience of our different products: Assistant, Vault, Workflows, and Harvey in Microsoft Word and Outlook. Lead end-to-end UI features for Assistant, Vault, Workflows, our Word/Outlook add-ins, and future Harvey products - from scoping and design reviews to implementation, launch, and iteration.
Staff Software Engineer, Developer Experience Crusoe EnergyStaff Software Engineer, Developer ExperienceSan Francisco, CA$208,725–$253,000 / yearWe're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not fully paved - people who want to grow their careers alongside a team of experts across energy, manufacturing, data center construction, and cloud services. Language & Version Control Mastery: Expertise in modern programming languages (specifically Go) and advanced proficiency in Git-based workflows (GitLab/GitHub).
Software engineer, connectors & MCP WriterSoftware engineer, connectors & MCPSan Francisco, CaliforniaFounded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. You'll dive deep into developing a state-of-the-art platform that leverages cutting-edge generative AI technologies, from large language models to sophisticated agentic workflows, delivering seamless, scalable, and secure applications that redefine enterprise productivity.
Staff Software Engineer, Claude Code AnthropicStaff Software Engineer, Claude CodeSan Francisco, CAThe ideal candidate will have a passion for developer tools, extensive knowledge of diverse programming environments and languages, and experience with advanced LLM features like tool-use, chaining and orchestration patterns, and prompt engineering. This research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, and Learning from Human Preferences.
Senior Software Engineer, Security Nex HealthSenior Software Engineer, SecuritySan Francisco, CA$165,000–$230,000 / yearWe're building the infrastructure layer for modern healthcare, connecting thousands of fragmented, on-premise, and closed EHR systems into a single, modern platform that powers software, APIs, payments, and patient experiences across the ecosystem. You'll write code, design secure systems, review architecture, and embed security into the way we build - working directly alongside product engineering teams from the earliest stages of design.
Software Engineer, Core Platform KongSoftware Engineer, Core PlatformSan Francisco, CaliforniaTrusted by the Fortune 500 and startups alike, Kong's unified API and AI platform, Kong Konnect, enables organizations to secure, manage, accelerate, govern, and monetize the flow of intelligence across APIs and AI models. About the IAM Team at Kong: Kong Inc., a leading developer of cloud API technologies, is on a mission to enable companies around the world to become "API-first" and securely accelerate AI adoption.
NewSoftware Engineer, Core Platform Kong HQSoftware Engineer, Core PlatformSan Francisco, CATrusted by the Fortune 500 and startups alike, Kong's unified API and AI platform, Kong Konnect, enables organizations to secure, manage, accelerate, govern, and monetize the flow of intelligence across APIs and AI models. About the IAM Team at Kong: Kong Inc., a leading developer of cloud API technologies, is on a mission to enable companies around the world to become "API-first" and securely accelerate AI adoption.