Senior Web Infra Engineer - Performance & Tooling
$260k - $330kNotion
Notion is seeking a core engineer for their Web Infrastructure team to improve web client performance and development velocity. You will lead projects that enhance page loading and interaction times, as well as build tooling for engineering teams. This role requires 8-10 years of experience in large web applications, specifically within React. The estimated salary range for this position in San Francisco is between $260k and $330k per year, along with competitive equity and benefits. #J-18808-Ljbffr Notion
- About the Role Join the engineering team of a Series A B2B... .... Improve platform performance and reliability to enhance... ...end‑to‑end at senior level. Tech Stack Backend... ..., TypeScript Cloud & Infra: AWS (RDS/PostgreSQL,... ...OpenSearch Observability & tooling: DataDog, Sentry,...SeniorPerformanceVisa sponsorship
$150k - $300k
...The Role We are looking for a AI Cloud Infra Engineer to join our infrastructure team. This role... ...than whether you’ve used these exact tools before. You are a good fit if this... ...implement solutions that directly impact the performance and availability of services for...SeniorPerformance$250k - $400k
...AI. We’re looking for a founding engineer with strong backend and infra instincts to help build the primitives... ..., reliability, developer tooling. Company highlights: World-Class... ...both humans and AI Agents Build high-performant, low-latency systems with the idea...SeniorFull timeWork experience placement$195k - $225k
The Role As the Senior Software Engineer - Backend (Systems / Infrastructure... ...ownership over APIs, performance, and data integrity —... ...background workers. Infra: Kubernetes, Pulumi,... ...building production web systems (TypeScript/... ...with observability tools and debugging live...SeniorPerformance- ...Senior Frontend Engineer — On-site (San Francisco, CA) Job Description We’re hiring a Senior Frontend... ...intuitive, accessible, and high-performance web experiences that guide users from “I... ...Contribute to frontend architecture, tooling, and best practices. Requirements 5+...SeniorPerformance
- ...Senior Frontend Engineer Location: San Francisco, CA Position Type: Full-Time, In-Person We’re building... ...solutions, ensuring maintainability, performance, and reliability as our platform... ...Familiarity with frontend code generation tools and workflows (e.g., Plop) Knowledge...SeniorPerformanceFull timeWorldwide
- ...is seeking a Cloud Infrastructure Engineer to design and operate secure, multi... ...and GCP, ensuring reliability, performance, and security. The role requires expertise... ..., and Infrastructure as Code tools like Terraform. Join a small, senior team tackling significant...SeniorPerformance
$196k - $220.5k
A leading technology company based in San Francisco is looking for a Senior Software Engineer to enhance build tooling and developer workflows. The ideal candidate should have over 3 years of experience with JavaScript tools and Node.js. Responsibilities include maintaining...Senior- ...what’s next. About the team The Engineering team at Airwallex is a... ...and integrations, we deliver tools that give businesses greater... ...and implementing user friendly web interfaces that enhance the usability... ...patterns and frontend performance optimisation. Demonstrated ability...SeniorPerformanceWorldwide
- ...experienced and skilled Senior Frontend Developer to... ...experience in developing web applications using... ...building scalable and performant front-end solutions. Architectural... ...in version control tools, build systems, and... ...degree in Computer Science, Engineering, or a related field....SeniorPerformanceRemote work
- Cystems Logic Inc is seeking a Senior Web Administrator to manage large-scale enterprise web hosting environments across multiple datacenters... .... This contract position requires expertise in web server performance optimization, security, troubleshooting, and high-...SeniorPerformanceContract work
$160k - $200k
...solution gives security and engineering teams everything they... ...seeking a talented Senior Frontend Engineer to... ...TruffleHog Enterprise web experience, including... ...development of intuitive, performant, and scalable user... ..., testing strategies, tooling, and engineering best...SeniorPerformanceRemote workFlexible hours$160k - $300k
...mission is to revolutionize how engineering decisions are made, turning... .... About the Role As a Senior / Staff Backend Engineer at Apiphany... ...for high availability and performance. You’ll also help shape long-... ...with third-party APIs, SaaS tools, and enterprise applications...SeniorPerformanceWork at officeVisa sponsorshipFlexible hours- Braintrust Data, Inc. is seeking a backend engineer to develop infrastructure for cutting-edge AI tools. You will design features for LLM performance insights, build real-time data pipelines, and collaborate with product teams. The ideal candidate has over 5 years of backend...SeniorPerformanceFlexible hours
- ...is a 6-month fixed-term contract. We're looking for a Web Development Engineer to own the performance, quality, and growth of our website (built on Webflow)... ...and measure impact. AI-Enabled Development Use AI tools to accelerate development, improve quality, and automate...SeniorPerformanceContract workFixed term contractImmediate start
- Perplexity AI Inc. is seeking experienced Generalist Software Engineers to join their Comet and Perplexity native application teams in... ...various teams including data science and QA, and should possess a deep understanding of app performance. #J-18808-Ljbffr Perplexity AI Inc.SeniorPerformance
- ...Senior Java Full Stack Engineer Location: Lehi, UT | Plano, TX | SF, CA (If local to our SF, Plano,... ...design and development of scalable, high-performance web services and applications. The ideal... ...for leveraging AI-powered developer tools to enhance productivity and code...SeniorPerformanceWork at officeLocal area
$176k - $210k
Komodo Health Inc is seeking a Senior Data Engineer based in San Francisco to develop and maintain AWS... ...in CI/CD pipelines and big-data tools. This role offers a salary range of $176,000 - $210,000, along with performance-based bonuses, equity awards, and comprehensive...SeniorPerformance$150k - $170k
...Role We are looking for a Senior Full Stack Software Engineer who is excited about... ...optimize Arine's flagship web applications, APIs, and data... ...software using a variety of tools, including but not limited... ...to driving velocity and performance multiples by leveraging modern...SeniorPerformanceLive inRemote work- Job Description We’re seeking a Senior Backend Engineer to design, build, and scale secure, enterprise... ...for security, reliability, and performance. Responsibilities Design, implement,... ...cloud infrastructure, and observability tooling. Track record of building secure systems...SeniorPerformance
- ...adjacent services, and we're looking for a Senior Backend Engineer to help us build rock‑solid guardrails and observability tooling at scale. About The Role You’ll focus on... ...Responsibilities Build and scale our product, ensuring performance, reliability, and continuous improvement....SeniorPerformanceWorldwide
- ...busy. We are now looking for a Senior Frontend Engineer to own that experience across mobile and web: building fast, intuitive,... ...best practices for code quality, performance, testing, and maintainability.... ...Expertise with modern frontend tooling (React/React Native,...SeniorPerformanceRemote workFlexible hours
- ...insights to help civil engineers build and maintain infrastructure... ...We're seeking a Senior Full-Stack Engineer... ...developing our 3D annotation QA tool, enabling customers to... ...on both typical web development tasks and specialized... ...improve our platform's performance and capabilities. What...SeniorPerformance
- Senior Backend Engineer (Python) At some point in the future, every business will... ..., including prompt design, tool / function calling, routing,... ...Write clean, maintainable, high‑performance Python code , leveraging... ...Python, experience writing async web apps using FastAPI, testing...SeniorPerformanceFull timeWork at office
- ...usability, accessibility, and performance. Implement intuitive and... ...components. Collaborate with backend engineers to integrate APIs and ensure... ...that follow current web standards.. Proficiency with... ...UI. Proficiency with testing tools: Ability to write unit tests...SeniorPerformance
- Senior Frontend Engineer Jobs in USA 2026 with Visa Sponsorship Step into a high-impact engineering... ...States, the company develops AI-powered tools for automation and workflow... ...including development, deployment, and performance monitoring Collaborate with founders...SeniorPerformanceH1bVisa sponsorship
$150k - $270k
...principles to deliver tools that enhance discovery,... ...the most helpful search engine in the world—one that prioritizes... ..., improving platform performance, and contributing to... ...? We're looking for a Senior Backend Engineer to... ...infrastructure that support web-scale AI-driven...SeniorPerformanceFull timeImmediate startRemote workWork from homeFlexible hours- Monograph is seeking a core engineer to join the Web Infrastructure team in San Francisco. The role focuses on enhancing the performance of Notion's web client and improving development velocity by leading various optimization projects. You will work towards decreasing...SeniorPerformance
$160k - $225k
The Role As a Founding Engineer at Straia, you’ll work directly with a small team including... ...Claude Scale infrastructure on GCP for performance, reliability, and data security... ...Integration: GPT, Gemini, Claude via API Cloud & Infra: Hosted on GCP What We Offer...SeniorPerformanceWork at office- Nscale is seeking a Senior Principal Front-End Network Engineer for its AI infrastructure, focusing on high-performance Ethernet networks. Located in Seattle, this role requires 12+ years of network engineering experience, particularly in hyperscale data centres. The successful...SeniorPerformance
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