founding full stack engineer Jobs in San Francisco

founding full stack engineer

full stack software engineer, enterprise agents Jobs in San Francisco

full stack software engineer, enterprise agents

lead full stack engineer Jobs in San Francisco

lead full stack engineer

senior full stack marketer Jobs in San Francisco

senior full stack marketer

senior full stack software engineer Jobs in San Francisco

senior full stack software engineer

full stack developer

<div>Web Developer (Full Stack or Frontend) 
Location: Remote (San Francisco preferred for collaboration) 
Contract Type: 3 month contract with potential for extension 
Company: REK Inc.<h3 class="jobSectionHeader">
About REK</h3>
REK is building the worlds first VR-controlled humanoid robot fighting league a fusion of robotics, gaming, and live entertainment. Following the sold-out success of REK0, were scaling our global presence and creating REK.tv, the official hub for our sport.
REK.tv will serve as our digital home where fans watch fights, buy merch, explore our robots, and follow upcoming events around the world. Were looking for a Web Developer who can help us bring this vision to life through bold design, smooth interactivity, and scalable tech.<h3 class="jobSectionHeader">
The Role</h3>
As REKs Contract Web Developer, you'll work closely with our product and creative teams to build REK.tv, a high-impact, high-performance site that combines cinematic presentation with real-time data and content updates.
Youll lead frontend development and manage integrations across our ecosystem including livestreams, event pages, our merch store, and our careers portal.<h3 class="jobSectionHeader">
Responsibilities</h3><ul><li>
Build and Deploy REK.tv: Implement the next-generation REK.tv website with clean, performant code optimized for video and dynamic visuals.</li><li>
Integrate Media &amp; Streaming: Embed and optimize live and on-demand video using modern frameworks and APIs.</li><li>
Dynamic Animations: Create visually striking transitions, hover effects, and responsive motion using frameworks like Framer Motion and Three.js.</li><li>
Frontend Development: Own the visual layer from pixel-perfect UI implementation to smooth interactions across devices.</li><li>
Backend Integration: Connect the frontend to backend systems, CMS, or APIs as needed (Node.js, Next.js, Firebase, or similar).</li><li>
E-commerce &amp; Careers Integration: Seamlessly connect our Stripe merch store and careers portal into the site.</li><li>
Performance &amp; SEO: Optimize for speed, accessibility, and SEO without sacrificing aesthetics.</li><li>
Collaboration: Work closely with design, product, and leadership to translate vision into production-ready code.</li></ul><h3 class="jobSectionHeader">
Ideal Skills &amp; Experience</h3><ul><li>
4+ years professional web development experience.</li><li>
Strong proficiency with React / Next.js / TypeScript (or Framer for rapid prototyping).</li><li>
Experience implementing advanced frontend effects (Framer Motion, GSAP, WebGL, Lottie, Three.js, etc.).</li><li>
Solid understanding of responsive design, accessibility, and performance tuning.</li><li>
Experience integrating APIs and third-party systems (e.g., Stripe, Greenhouse/Workable, YouTube/Twitch embeds, Airtable, etc.).</li><li>
Familiarity with hosting &amp; deployment on Vercel, Netlify, or AWS.</li><li>
Strong eye for design and motion this site should feel like a trailer.</li><li>
Comfortable working in a fast-moving startup environment with limited specs and high creative freedom.</li></ul><h3 class="jobSectionHeader">
Bonus Points</h3><ul><li>
Experience building sites for esports, entertainment, or tech brands.</li><li>
Experience with 3D or holographic web elements (Three.js, Spline, etc.).</li><li>
Familiarity with Framer (we currently use it for design and prototype hosting).</li><li>
Prior collaboration with creative teams or marketing launches.</li></ul><h3 class="jobSectionHeader">
Compensation</h3><ul><li>
Competitive hourly or fixed contract rate based on experience.</li><li>
Flexible schedule and potential for ongoing collaboration as REK.tv evolves.</li><li>
Opportunity to contribute creatively to one of the most ambitious entertainment startups in robotics and sport.</li></ul><h3 class="jobSectionHeader">
Why You'll Love Working With REK</h3>
Youll be helping build the digital front door to the worlds first robot fighting league combining sleek tech aesthetics with combat-sports intensity. 
Your code will define how fans experience REK for the first time through dynamic visuals, high-energy motion, and seamless interactivity.</div>

Web Developer

Twill

About the RoleWe&rsquo;re looking for a Founding Full Stack Engineer to power our world-class startup. Backed by top-tier VCs and led by world-class founders, you&rsquo;ll help build the product from the ground up, translating ambitious ideas into scalable, elegant code.You&rsquo;ll work directly with the founding team to shape the technology, influence the product roadmap, and play a key role in defining the company&rsquo;s culture. This is a rare opportunity to join early, take ownership, and see your work make an immediate impact.What We&rsquo;re Looking For<ul><li>5+ years of professional software engineering experience</li><li>2 years of startup experience within the past 5 years</li><li>Strong proficiency in Python (or a similar backend language) and JavaScript or TypeScript</li><li>Experience with React or Next.js for front-end development</li><li>Familiarity with SQL and NoSQL databases</li><li>Experience building and consuming REST or GraphQL APIs</li><li>Comfort working in cloud environments such as AWS, GCP, or Azure</li><li>Strong fundamentals in performance optimization, debugging, and version control</li><li>A product-oriented mindset and enthusiasm for working in a fast-moving startup environment</li></ul>What You&rsquo;ll Do<ul><li>Build and maintain full-stack web applications from prototype to production</li><li>Collaborate with product and design to define requirements and deliver high-quality, user-friendly experiences</li><li>Write clean, scalable code across the stack from APIs to front-end components</li><li>Manage integrations, data pipelines, and deployment workflows</li><li>Establish best practices for testing, documentation, and code review</li><li>Contribute to the product&rsquo;s technical vision and help guide future hires as the team grows</li></ul>Bonus Points<ul><li>Experience with AI, data-driven products, or workflow automation tools</li><li>Familiarity with Docker, Kubernetes, or Terraform</li><li>Prior experience in an early-stage or founding engineering role</li></ul>Why You&rsquo;ll Love Working Here<ul><li>Direct collaboration with exceptional founders and advisors</li><li>Real ownership and the ability to shape both the product and the engineering culture</li><li>Fast-moving, high-trust environment that rewards initiative</li><li>Competitive compensation and meaningful equity</li></ul>Job Type: Full-timePay: $130,000.00 - $230,000.00 per yearApplication Question(s):<ul><li>Do you have 2 years of startup experience within the past 5 years?</li></ul>Experience:<ul><li>Full-Stack: 5 years (Preferred)</li></ul>Ability to Relocate:<ul><li>San Francisco, CA 94114: Relocate before starting work (Preferred)</li></ul>Work Location: In person

Founding Full Stack Engineer

Twenty80

About the Role We&rsquo;re looking for a highly skilled Senior Full Stack Engineer with 5+ years of experience spanning frontend and backend development. The ideal candidate has worked at both reputable tech companies (e.g., FAANG, Databricks, Snowflake) and startups, and thrives in an environment where ownership, adaptability, and iteration are key.If you&rsquo;re a generalist who enjoys tackling complex technical challenges, shaping architectural direction, and building systems that scale &mdash; this is a great opportunity to make a major impact at an early stage of growth.What You&rsquo;ll Do<ul><li>Design and build the core intelligence engine end-to-end &mdash; including data ingestion, model orchestration, feedback loops, APIs, and UI integration.</li><li>Own architecture decisions across stack boundaries (Python / Go / TypeScript) to enable scalable and evolvable systems.</li><li>Collaborate directly with the founders on roadmap prioritization, trade-offs, and technical vision.</li><li>Define what great engineering looks like in an AI-first organization.</li><li>Occasionally engage with customers to understand needs and translate them into technical solutions.</li></ul>Tech Stack TypeScript, Python, Go, Postgres, React, Distributed Systems, Data Pipelines, AI/MLWho You Are<ul><li>5&ndash;15 years of experience in software engineering, including a senior title at a reputable tech company.</li><li>Proven experience working across different parts of the stack &mdash; frontend, backend, and infrastructure.</li><li>Strong foundations in distributed systems, data, or AI/ML.</li><li>Comfortable working in a fast-paced, ambiguous environment and thinking like an owner.</li><li>Graduate of a top computer science program (MIT, Stanford, CMU, UC Berkeley, Caltech, Harvard, University of Washington, Georgia Tech, Cornell) &mdash; preferred but not required.</li></ul>Hybrid Work Policy This is a hybrid role based in San Francisco, California, with an expectation of 3 days per week in the office at 55 Hawthorne. We value in-person collaboration as we build our early team. However, we&rsquo;re open to considering fully remote options for exceptional talent. If the right candidate prefers remote work, this could shape a long-term cultural shift toward fully remote operations.Visa Sponsorship Visa sponsorship is available. Both founders are immigrants and have a strong understanding of the immigration process. The team is committed to ensuring that sponsored individuals are supported &mdash; including working with investors to facilitate transitions to O-1 visas or placements within other portfolio companies if needed.Compensation Salary: $160,000 &ndash; $220,000 USD Equity: Competitive equity packageJob Type: Full-timePay: $160,000.00 - $220,000.00 per yearApplication Question(s):<ul><li>Do you happen to have a GitHub or portfolio link you&rsquo;d be open to sharing? It&rsquo;ll help us get a sense of your recent work. If yes, kindly share the link below.</li><li>Just to confirm, have you previously worked in a high-growth start-up (Seed to Series B stage)?</li><li>This role prefers candidates Held a senior title at a reputable company (FAANG, Databricks, Snowflake).</li></ul>FAANG refers to Facebook, Amazon, Apple, Netflix, and Google &mdash; companies recognized for their strong engineering practices and technical rigor. Have you worked at, or received training from, any organization with a similar engineering culture?Education:<ul><li>Bachelor's (Required)</li></ul>Experience:<ul><li>Full-stack software engineering: 5 years (Required)</li></ul>Work Location: In person

Founding Engineer (Hybrid – San Francisco, CA)

MLabs

<div>
 
 Location:
 
 San Francisco, CA (100% On-site)
 
 
 
 Compensation:
 
 $150,000 - $250,000 (Base Salary) + Equity
 
 
 We are building the future of hiring with our revolutionary
 
 AI Recruiter
 
 that conducts job interviews in real-time over video calls. Our platform acts as a marketplace, serving candidates with a world-class interview experience and employers with powerful data aggregation and analysis tools. We are looking for a hands-on
 
 Senior Full Stack Software Engineer
 
 to build both consumer-facing and enterprise-grade software with a clear opportunity for growth and ownership.
 
 
 As a Senior Full Stack Software Engineer, you will be a founding member of our small, passionate team, solving challenging technical problems at the intersection of consumer software, enterprise platforms, and conversational AI.
 
 
 
 In this role, you will work on:
 
 
 
 <ul>
 <li>
 Consumer Experience: Drastically decrease interviewer response latency (e.g., target under 200ms) and scale our infrastructure to support thousands of simultaneous interviews while ensuring compliance across different geographies
 </li>
 <li>
 AI &amp; Data Infrastructure: Design and implement data solutions, including Vector Databases, to handle complex queries for matching candidates with specific traits
 </li>
 <li>
 Enterprise Integration: Integrate our platform with major customer internal hiring systems and build beautiful apps for recruiters to view and analyze interview data visually and quickly
 </li>
 <li>
 Scalability &amp; DevOps: Scale our system architecture and leverage our cloud/DevOps stack (Azure, Kubernetes, Docker) for high availability and performance
 </li>
 <li>
 Full Stack Feature Delivery: Own the end-to-end development of many, many features across the platform, from the Python backend to the TypeScript/React frontend
 
 
 </li>
 </ul>
 
 Requirements
 
 
 
 <ul>
 <li>
 Experience: 3 to 7 years of full stack engineering experience (senior+ level)
 </li>
 <li>
 Frontend: Proficiency with React (TypeScript)
 </li>
 <li>
 Backend: Strong knowledge of Python and experience with modern backend technologies, including asynchronous programming (asyncio) and SQL (Postgres)
 </li>
 <li>
 Cloud &amp; DevOps: Experience with cloud services and DevOps tooling (Azure, Kubernetes, Docker)
 </li>
 <li>
 Problem-Solving: Proven ability to love to code, experiment, and iterate quickly, with a hungry, builder mentality
 </li>
 <li>
 Collaboration: Strong communication and collaboration skills to work effectively with product, design, and co-founders in an on-site environment
 
 
 </li>
 </ul>
 
 Preferred Qualifications:
 
 
 
 <ul>
 <li>
 Experience working on a two-sided marketplace or platform serving both consumer and enterprise customers
 </li>
 <li>
 Experience with Vector Databases or building conversational AI/LLM-powered products
 </li>
 <li>
 A love for that "build fast, break things, and learn" mentality (hackathon experience is a huge plus)
 
 
 </li>
 </ul>
 
 Benefits
 
 
 
 <ul>
 <li>
 Impact: Work directly on building the future of hiring, contributing to an autonomous AI recruiter that has already conducted thousands of interviews across multiple industries
 </li>
 <li>
 Compensation: Competitive salary ($150,000 - $250,000) and meaningful equity participation (0.01% - 0.25%)
 </li>
 <li>
 Time Off: Unlimited PTO (Paid Time Off)
 </li>
 <li>
 Wellness: Comprehensive health insurance coverage
 </li>
 <li>
 Office Perks: Company lunches provided
 </li>
 <li>
 Work Policy: 100% On-site role in our San Francisco, CA office to foster deep collaboration with a small, founding team
 </li>
 <li>
 Visa Support: Visa sponsorship is not available for this position
 
 
 </li>
 </ul>
 
 Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search.
 
 
 
 
 Commitment to Equality and Accessibility:
 
 
 
 At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing human-resources@mlabs.city.
 
 
 MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd's Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting legal@mlabs.city.
</div>

Senior Full Stack Software Engineer

Padlet

<div>
 Padlet is building software for a good education. A good education is one that inspires curiosity, creativity, and community. Our software enables that through visual content creation and collaboration in millions of classrooms worldwide.
 
 
 Exceptional products are exceptional in all dimensions that matter. Take the Dyson vacuum cleaner. Not only is it a good at vacuuming, it&rsquo;s beautiful, feels good in the hand, is portable, and is easy to use. We are looking for Fullstack Engineers to build exceptional software products for a billion people.
 
 
 
 Responsibilities
 
 
 
 <ul>
 <li>
 Owning and implementing new features that touch multiple layers of the tech stack. E.g. creating a beautiful search experience.
 </li>
 <li>
 Creating delight. E.g. through animations and micro UI.
 </li>
 <li>
 Making the web apps faster and more reliable. E.g. reducing javascript payload or making network requests more resilient.
 </li>
 <li>
 Improving how we work. E.g. improving our component library or tools we use to translate the web app into 40+ languages.
 
 
 </li>
 </ul>
 
 Qualifications
 
 
 
 <ul>
 <li>
 At some point in your life, someone has told you: &ldquo;you write good code.&rdquo;
 </li>
 <li>
 You know how to copy-paste code from Stack Overflow.
 </li>
 <li>
 Bonus: you have a good sense of humor.
 
 
 </li>
 </ul>
 
 About Padlet
 
 
 
 <ul>
 <li>
 Vision: Every child in the world will grow up with Mickey Mouse and Padlet.
 </li>
 <li>
 Product: We are making the default way of collecting and sharing thoughts on the Internet. People love the product.
 </li>
 <li>
 Impact: We have 40 million users, making Padlet one of the most used apps on the planet.
 </li>
 <li>
 Money: We are venture backed AND fiscally responsible. We are built to last one hundred years.
 </li>
 <li>
 Badassery: We are only 60 odd people. That's over half a million active users per person.
 
 
 </li>
 </ul>
 Tech stack
 
 
 <ul>
 <li>
 Mobile apps: React Native (with Swift and Java where necessary.)
 </li>
 <li>
 Backend: Ruby (Rails), Typescript, Elixir (Phoenix), and Python.
 </li>
 <li>
 Web: VueJS, Tailwind.
 </li>
 <li>
 Storage: Postgres, Redis, Elasticsearch, Firestore, and Snowflake.
 
 
 </li>
 </ul>
 Joys of programming at Padlet
 
 
 <ul>
 <li>
 We have very few meetings. We value keeping you in flow.
 </li>
 <li>
 A lot of people use Padlet. We have to solve interesting concurrency problems.
 </li>
 <li>
 Our users are in over 200 countries, using all kinds of devices and connections, and speaking over 40 languages. We have to solve interesting internationalization problems.
 </li>
 <li>
 We process a lot of data real fast. We have to solve interesting scale problems.
 </li>
 <li>
 We try to solve problems creatively instead of just throwing money at them. We are engineers! We thrive in constraints, not in the absence of them.
 </li>
 <li>
 We ship often.
 </li>
 <li>
 We value beautiful code.
 
 
 </li>
 </ul>
 Sorrows of programming at Padlet
 
 
 <ul>
 <li>
 We grew pretty fast last year and our processes are still catching up. E.g. we don't have 100% code coverage yet. Our deployment process isn't as painless as it could be. This sometimes leads to spending time on things that aren't the most fun. We&rsquo;re working on it!
 </li>
 <li>
 Our project management process could be better. This sometimes leads to re-speccing in the middle of development, getting in the way of programming flow. We&rsquo;re working on it!
 
 
 </li>
 </ul>
 Some people you&lsquo;d be working with
 
 
 <ul>
 <li>
 Linh Nguyen: At any given point, no one really knows where Linh is. Kind of like an electron. We learn of his existence through pull requests and code reviews. Manager of people, code, and scope creep.
 </li>
 <li>
 Colin Teahan: Lives for one-liners. E.g: Colleague: &ldquo;Wouldn&rsquo;t it be funny if Iron Man were anemic?&rdquo; Teahan: &ldquo;It would be IRONIC.&rdquo; Single-handedly wrote early versions of our iOS and Android apps.
 
 
 </li>
 </ul>
 The office
 
 
 <ul>
 <li>
 Our office is in the middle of Presidio, a beautiful national park. We&rsquo;re a 5 minute walk from the beach. The WiFi works outdoors. You can work sitting in a lawn overlooking the Golden Gate Bridge.
 </li>
 <li>
 The office itself is designed to be a space for all your interests and hobbies. We have a meditation room, game room, library, art studio, kids room, and full makerspace with 3d printers, presses, laser cutters, sewing machines, and more.
 
 
 </li>
 </ul>
 
 Benefits
 
 
 
 <ul>
 <li>
 Top tier medical, dental, and vision insurance for you and your family, including One Medical memberships.
 </li>
 <li>
 401(k) with matching.
 </li>
 <li>
 Commuter benefits.
 </li>
 <li>
 FSA.
 </li>
 <li>
 Stock options.
 </li>
 <li>
 Catered lunches and dinners. Military grade snacking.
 </li>
 <li>
 20 vacation days. Plus sickness and bereavement days for when life happens.
 </li>
 <li>
 Parental leave
 </li>
 <li>
 All the gadgetry you need, including a new phone every year.
 
 
 </li>
 </ul>
 Special time to join
 
 
 Because we're small, there's a lot of energy. And because we have tremendous traction, your first commit touches millions. This combination is rare and quite satisfying.
 
 
</div>

Software Engineer – Frontend / Backend / Fullstack

Aircall

<div>
 Aircall is a unicorn AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, faster resolutions, and scale. We&rsquo;re redefining what a customer communications platform can be&mdash;by combining voice, SMS, WhatsApp, and AI into one seamless workspace.
 
 
 Our momentum comes from a simple but powerful idea: help every customer-facing team work smarter, not harder. Aircall&rsquo;s AI Voice Agent automates routine calls, AI Assist streamlines post-call tasks, and AI Assist Pro delivers real-time guidance that helps people do their best work. The result&mdash;companies grow revenue, deliver faster resolutions, and scale service.
 
 
 We&rsquo;ve built a product customers love and a business that scales fast. Aircall operates in nine global offices (Paris, New York, San Francisco, Sydney, Madrid, London, Berlin, Seattle, and Mexico City), and is backed by world-class investors. Our teams are shipping AI innovation faster than ever and expanding across new product lines and markets.
 
 
 At Aircall, you&rsquo;ll join a company in motion&mdash;ambitious, profitable, and product-driven&mdash;where impact is visible, decisions are fast, and growth is real.
 
 
 
 How We Work at Aircall:
 
 At Aircall, we believe in customer obsession, continuous learning, and delivering extraordinary outcomes. We value open collaboration, taking ownership, and making smart, informed decisions with speed and precision. If you thrive in a fast-paced, team-driven environment where curiosity, trust, and impact matter, you'll fit right in
 
 
 As a Full-Stack Software Engineer for our AI teams, you will be responsible for the design, development, deployment, and operation of business-critical features. Previous experience with frontend development is a must &ndash; preferably in React.
 
 
 
 Your Responsibilities @ Aircall:
 
 
 
 <ul>
 <li>
 Participate in requirements analysis to help with providing the right technical and business solutions for our customers
 </li>
 <li>
 Have key responsibilities within the design, architecture, and end-to-end delivery of key product features
 </li>
 <li>
 Write clean scalable code and test and deploy applications and systems
 </li>
 <li>
 Revise, update, refactor, and debug code
 </li>
 <li>
 Be part of an engineering organization delivering high quality, secure, voice solutions to Aircall clients
 </li>
 <li>
 Involvement in product and platform performance optimization and live site monitoring
 </li>
 <li>
 Participate in an on-call rotation to respond to critical system issues and ensure continuous system reliability
 
 
 </li>
 </ul>
 
 Qualifications:
 
 
 
 <ul>
 <li>
 2+ years of experience in full-stack software engineering
 </li>
 <li>
 Strong experience building frontend applications, ideally in React
 </li>
 <li>
 Strong nice-to-have: Expert proficiency in Python or Typescript/Node.js and AWS
 </li>
 <li>
 Exposure to LLM development, including but not limited to side projects or hackathons
 
 
 </li>
 </ul>
 $130,000 - $220,000 a year
 
 
 This is not including equity and other benefits. The actual salary offered will carefully consider a wide range of factors, including your skills, qualifications, and experience.
 
 
 Why join us?
 
 
 🚀 Key moment to join Aircall in terms of growth and opportunities
 
 
 💆&zwj;&female;️ Our people matter, work-life balance is important at Aircall
 
 
 📚 Fast-learning environment, entrepreneurial and strong team spirit
 
 
 🌍 45+ Nationalities: cosmopolite &amp; multi-cultural mindset
 
 
 💵 Competitive salary package &amp; equity
 
 
 🏨 Medical, dental, and vision insurance is 100% covered
 
 
 📈 401k plan with company matching!
 
 
 ✈️ Unlimited PTO &mdash; take the time you need to come to work feeling great!
 
 
 ⭐️ Wellness, commuter, and childcare reimbursements
 
 
 💚 Generous parental leave policy
 
 
 DE&amp;I Statement:
 
 
 At Aircall, we believe diversity, equity and inclusion &ndash; irrespective of origins, identity, background and orientations &ndash; are core to our journey.
 
 
 We pride ourselves on promoting active inclusion within our business to foster a strong sense of belonging for all. We&rsquo;re working to create a place filled with diverse people who can enrich and learn from one another. We&rsquo;re committed to ensuring that everyone not only has a seat at the table but is valued and respected at it by providing equal opportunities to develop and thrive.
 
 
 We will constantly challenge ourselves to make sure that we live up to our ambitions around diversity, equity and inclusion, and keep this conversation open. Above all else, we understand and acknowledge that we have work to do and much to learn.
 
 
 Want to know more about candidate privacy? Find our Candidate Privacy Notice here.
 
 
 We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
</div>

Full-Stack Software Engineer, AI - San Francisco

Decagon

<div>About Decagon
Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experience. Our AI agents provide intelligent, human-like responses across chat, email, and voice, resolving millions of customer inquiries across every language and at any time.
Since coming out of stealth, Decagon has experienced rapid growth. We partner with industry leaders like Hertz, Eventbrite, Duolingo, Oura, Bilt, Curology, and Samsara to redefine customer experience at scale. We've raised over $200M from Bain Capital Ventures, Accel, a16z, BOND Capital, A*, Elad Gil, and notable angels such as the founders of Box, Airtable, Rippling, Okta, Lattice, and Klaviyo.
We&rsquo;re an in-office company, driven by a shared commitment to excellence and velocity. Our values&mdash;customers are everything, relentless momentum, winner&rsquo;s mindset, and stronger together&mdash;shape how we work and grow as a team.<h2 class="jobSectionHeader">
About the Team</h2>
The Infrastructure team builds and operates the foundations that power Decagon: networking, data, ML serving, developer platform, and real&#8209;time voice. We partner closely with product, data, and ML to deliver high&#8209;scale, low&#8209;latency systems with clear SLOs and great developer ergonomics.
We organize around five focus areas:<ul><li>
Core Infra: The foundational cloud stack&mdash;networking, compute, storage, security, and infrastructure&#8209;as&#8209;code&mdash;to ensure reliability, scale, and cost efficiency.</li><li>
Data Infra: Streaming/batch data platforms powering analytics/BI and customer&#8209;facing telemetry, including for customer&#8209;managed and on&#8209;prem environments.</li><li>
ML Infra: GPU and model&#8209;serving platforms for LLM inference with multi&#8209;provider routing and support for on&#8209;prem/air&#8209;gapped deployments.</li><li>
Platform (DevEx): CI/CD, paved paths, and core services that make shipping fast, safe, and consistent across teams.</li><li>
Voice Infra: Telephony/WebRTC stack and observability enabling ultra&#8209;low&#8209;latency, high&#8209;quality voice experiences.</li></ul>
Our mission is to deliver magical support experiences &mdash; AI agents working alongside humans to resolve issues quickly and accurately.<h2 class="jobSectionHeader"> 
About the Role</h2>
We&rsquo;re hiring a Senior Infrastructure Engineer to design, build, and operate production infrastructure for high&#8209;scale, low&#8209;latency systems. You&rsquo;ll own critical services end&#8209;to&#8209;end, improve reliability and performance, and create paved&#8209;paths that let every Decagon engineer ship confidently.<h2 class="jobSectionHeader"> 
In this role, you will</h2><ul><li>
Design and implement critical infrastructure services with strong SLOs, clear runbooks, and actionable telemetry.</li><li>
Partner with research and product teams to architect solutions, set up prototypes, evaluate performance, and scale new features.</li><li>
Tune service latencies: optimize networking paths, apply smart caching/queuing, and tune CPU/memory/I/O for tight p95/p99s.</li><li>
Evolve CI/CD, golden paths, and self&#8209;service tooling to improve developer velocity and safety.</li><li>
Support various deployment architectures for customers with robust observability and upgrade paths.</li><li>
Lead infrastructure&#8209;as&#8209;code (Terraform) and GitOps practices; reduce drift with reusable modules and policy&#8209;as&#8209;code.</li><li>
Participate in on&#8209;call and drive down toil through automation and elimination of recurring issues.</li></ul><h2 class="jobSectionHeader"> 
Your background looks something like this</h2><ul><li>
6+ years building and operating production infrastructure at scale.</li><li>
Depth in at least one area across Core/Data/AI&#8209;ML/Platform/Voice, with curiosity to learn the rest.</li><li>
Proven track record meeting high availability and low latency targets (owning SLOs, p95/p99, and load testing).</li><li>
Excellent observability chops (OpenTelemetry, Prometheus/Grafana, Datadog) and incident response (PagerDuty, SLO/error budgets).</li><li>
Clear written communication and the ability to turn ambiguous requirements into simple, reliable designs.</li></ul><h2 class="jobSectionHeader"> 
Even better</h2><ul><li>
Experience being an early backend/platform/infrastructure engineer at another company</li><li>
Strong Kubernetes experience (GKE/EKS/AKS) and experience across multiple cloud providers (GCP, AWS, and Azure)</li><li>
Experience with customer&#8209;managed deployments</li></ul><h2 class="jobSectionHeader"> 
Benefits</h2><ul><li>
Medical, dental, and vision</li><li>
Flexible time off</li><li>
Daily lunch/dinner &amp; snacks in the office</li></ul>
Compensation Range: $200K - $375K</div>

Senior Software Engineer, Infrastructure

Explore 189+ Full stack developer in San Francisco this November. Find roles across top companies and apply now to boost your career.