Founding Software Engineer

Join a transformative healthcare technology company that is revolutionizing care delivery across America. Our client focuses on addressing one of the most significant coordination challenges in healthcare by developing an AI-driven platform designed to enhance caregiving workflows, boost patient outcomes, and alleviate administrative burdens for both providers and payers. Their groundbreaking solutions span across home care, senior living, hospice, and disability services, crafting a seamlessly connected and efficient distributed healthcare system.In an industry where caregiving represents the largest job market in the U.S., the current system still relies on outdated methods like sticky notes and spreadsheets, leading to delays and inefficiencies. Families often wait weeks for assistance, patients miss essential visits, and caregiver turnover is alarmingly high at 65% annually.They are constructing the AI coordination layer for care—developing intelligent agents that navigate complexities, support caregivers, and transform disjointed workflows into dependable systems. Their initial focus on home care is set to expand into senior living, hospice, disability, and more, ultimately serving as the connective framework for a decentralized healthcare network.This platform offers payers real-time visibility across fragmented provider networks, ensuring members receive timely and appropriate care while minimizing costs and administrative strain.This isn’t merely about creating better software; it’s about building a new infrastructure that has never been possible until now. They are searching for passionate builders dedicated to tackling one of the world's most complex and impactful coordination challenges.As a Full-Stack Software Engineer, you will play a pivotal role in shaping the future of healthcare technology. You will be at the forefront of ambitious product initiatives, taking ownership of the development of essential features such as EHR integrations, intelligent workflows, and advanced voice AI infrastructure. Your contributions will directly drive revenue growth by facilitating customer onboarding and expanding contract opportunities with innovative use cases.We seek a proactive, high-ownership individual who is adept at building exceptional products, thrives in a fast-paced environment, and is eager to engage at the intersection of healthcare and AI.

Founding Software Engineer - TruTecAbout TruTecTruTec is an AI-driven construction takeoff platform that is transforming a $17 billion industry. We streamline the tedious manual tasks of site measurement and material estimation, reducing hours or days of work into mere seconds. By utilizing satellite imagery, drone photography, and uploaded plans, we furnish contractors with immediate, bid-ready reports and invoicing tools.Currently in the pre-seed phase, TruTec is experiencing rapid growth with new customers joining us daily. To sustain this momentum and enhance our product offerings, we are seeking a Founding Software Engineer to join our innovative team.The RoleAs a Founding Engineer, you will significantly influence TruTec’s future direction. Your role will extend beyond simply writing code; you'll be instrumental in constructing the foundational elements of a product designed to automate the function of a construction estimator.Key Responsibilities:Ship Independently: Take full ownership of features from ideation through to deployment.Performance Optimization: Enhance the platform's speed and responsiveness.Cross-Platform Delivery: Ensure a lightweight, highly functional experience on Windows devices.Scale the Product: Assist in expanding our capabilities to stay competitive and meet the demands of our rapidly growing customer base.Who You AreBuilder Mentality: You have a proven history of shipping products, whether through impactful internships or your own independent ventures.Technical Excellence: You likely hail from a top-tier undergraduate program.Autonomous: You thrive in environments with minimal oversight and can navigate the uncertainties of an early-stage startup.Execution-Focused: You are motivated by the desire to act swiftly and bridge labor gaps through intelligent engineering.Why Join Us?Become part of a pre-seed startup at its inception.Engage in cutting-edge AI methods that yield the most reliable predictions in the industry.

Company OverviewMultiply is an innovative startup located in the heart of San Francisco, California, poised for exceptional growth. We have developed Blue, an advanced AI Agent recognized as the top performer in digital marketing. Blue operates around the clock to design and enhance advertising campaigns, empowering our clients to accelerate their growth.As part of a compact yet dynamic team of five, you will be our sixth member, playing a crucial role in our expansion.Our esteemed clientele includes renowned tech companies from Silicon Valley, featuring several unicorns. With an abundance of demand exceeding our current capacity, we are rapidly expanding our team across various departments to meet this challenge.Role OverviewIn the role of Founding Software Engineer, you will be more than just a coder; you will have the opportunity to influence our product offerings, company culture, and overall direction. Your insights will significantly shape our technological framework and vision.This is a full-time, in-person position based at Multiply HQ in San Francisco. We are dedicated to building a legacy company, and if you seek an exhilarating journey, this is the perfect opportunity for you.ResponsibilitiesRapidly develop and refine new features from conception to deployment, incorporating customer feedback for continuous improvement.Take ownership of key product functionalities from start to finish, integrating large language models (LLMs) and creating workflows to ensure a top-notch user experience.Work closely with the founders to define product vision, plan the roadmap, and establish architectural frameworks.Establish the foundation for our engineering culture, including tools and processes.Assist in building and mentoring the initial engineering team as we grow.

About OliveAt Olive, we are revolutionizing the way companies build internal tools by enabling them to create sophisticated applications simply by expressing their needs in natural language.Internal tools are crucial for modern organizations, serving as the operational backbone for various functions, from sales dashboards to trust and safety workflows. Currently, the process of developing these tools is cumbersome and time-consuming, often draining engineering resources.Our innovative platform leverages advanced large language models (LLMs) and code generation techniques to assemble fully functional internal tools in mere minutes, seamlessly integrated with company data. This empowers businesses to gain deeper insights and enhance their operational efficiency.Having secured a $2.1M seed funding from esteemed investors and industry pioneers, we are now in an exciting phase of expanding our team.This position offers a unique chance to contribute to a transformative project that demands both skill and speed. If you are passionate about making a significant impact, we encourage you to apply.

Join Momentic and Shape the Future of Quality.At Momentic, we are at the forefront of innovation with our comprehensive quality platform, leveraging cutting-edge AI agents to empower our clients in maintaining quality throughout every phase of the Software Development Life Cycle (SDLC).Leading engineering teams at renowned companies such as Notion, Bilt, Quora, and Xero rely on Momentic to deliver exceptional products. Our platform executes millions of tests daily, ensuring the highest standards of quality.With a vast problem space to explore, we are eager to bring on board several talented software engineers across various tech stacks. Your expertise will help us build and own significant components of our solution.About Our ProductWe are developing an AI-native automated testing platform.Our product is highly integrated into our clients' workflows, serving as a quality gate for every pull request and deployment.We stand out in the market, far surpassing traditional tools like Selenium, Cypress, and Playwright.Experience our platform in action by watching the demo video on our website.About UsWe are a dynamic team of 12 professionals with backgrounds from companies like Robinhood, Retool, WeWork, Qualtrics, and Assembled.Located in San Francisco, we work in a collaborative office environment.Recently, we secured a Series A funding round, raising $15M led by Standard Capital, with participation from our esteemed investors, including Y Combinator, FCVC, and Transpose Platform.Ideal Candidate ProfileYou thrive on tackling complex challenges that involve both product development and technical uncertainties.You possess robust engineering fundamentals, write efficient code, and are aware of your strengths and areas for growth.You prefer hands-on work over meetings and are focused on productivity and delivering results.You excel in environments that grant you autonomy and allow you to manage your own projects.You are located in San Francisco or are willing to relocate, and you value in-person collaboration as part of our company culture.

About Simple AIAt Simple AI, we are pioneering cutting-edge voice AI solutions tailored for enterprises. Our lifelike voice agents empower renowned companies such as DoorDash, xAI, and Omaha Steaks in managing diverse phone operations ranging from customer support to order intake and lead qualification. As we experience rapid revenue growth, we seek a couple of founding software engineers to help us meet current customer demands while developing innovative systems for the future. Our team is passionate about harnessing AI to transform the world, and we operate from our San Francisco office five days a week.Simple AI is proudly supported by top-tier investors and industry leaders, including Y Combinator, Massive Tech Ventures, and prominent figures like Michael Seibel (co-founder of Twitch), Jared Friedman (Scribd), Alexandr Wang (Scale AI), Matt Van Horn (June Oven and Lyft), Suhail Doshi (Mixpanel), JJ Fliegelman (WayUp), and Scott Wu (Cognition).Meet the FoundersThe founders, Catheryn Li and Zach Kamran, previously led software teams at Y Combinator, where they launched numerous products for YC founders, including the co-founder matching site. Cat brings experience from Instagram and Facebook and holds degrees in mathematics and computer science from MIT. Zach studied computer science and statistics at the University of Chicago and led software initiatives at PEAK6.What We ProvideCompetitive salary with significant equity opportunitiesEmployee-friendly equity termsOffice located in San FranciscoComprehensive health, dental, and vision insuranceComplimentary lunch and dinner at the officeFree Uber rides home after 8:30 PMRegular team events and offsite activitiesYour Qualifications4+ years of relevant software engineering experience.Exceptional problem-solving skills and a passion for tackling technical challenges.A customer-centric mindset coupled with strong communication skills and a keen interest in product design and prioritization.Self-motivated with the ability to work independently.A genuine enthusiasm for continual learning and keeping abreast of the latest advancements in AI.

Kiloforge operates as a company factory in San Francisco, using AI to generate, validate, build, and distribute software products for niche communities. The team’s goal is to address overlooked challenges with tailored applications and eventually manage thousands of products, each designed for specific needs. Role overview This founding engineer position centers on building and shipping micro applications at a rapid pace. The work involves developing software for real users, automating processes, and adapting quickly as priorities shift. The environment values experimentation and learning across disciplines. What you will do Develop and release micro applications each week for actual users Continuously improve and automate development workflows Who we're looking for Generalists with broad skills, ideally extending beyond engineering Experience building products that have reached real customers Resourceful and adaptable, able to respond to new challenges Strong instincts for product and design Comfortable with shifting priorities and ambiguity Curious and motivated to learn across different fields Background in founding a company or strong interest in entrepreneurship The team Founders with experience building companies, including one that reached $20M ARR Track record of launching products with thousands of active users Driven to make a meaningful impact Small, agile group of founders and builders Supported by investors such as a16z, Uncork Capital, Y Combinator partners, and Rahul Vohra Why join Kiloforge Collaborate with designers, creatives, and marketers to integrate their expertise into AI-driven workflows Ideal for those ready to take risks and help reshape how software is built and shipped Hands-on experience building and distributing products in an AI-first setting

Join voxel as a Founding Forward Deployed Engineer, where you will play a pivotal role in shaping our technology solutions while directly engaging with clients. This is an exciting opportunity to leverage your engineering skills in a dynamic startup environment, driving innovation and customer success from the ground up.

Founding Full Stack EngineerLocation: San Francisco Bay AreaType: Full-TimeCompensation: Competitive salary + significant equity (founding tier)Supported by 8VC, we are assembling a top-tier team to address one of the industry's most pressing infrastructure challenges.About the RoleWe are seeking a founding full stack engineer to help design and build our platform from the ground up. This is a rare opportunity to influence a substantial portion of the technology stack and advance into a leadership position with considerable equity potential.You will work on infrastructure that merges extensive data systems with AI-driven agents. This role offers a high degree of autonomy and ownership over core architecture and the foundational team culture.Your responsibilities will include writing production code for both backend and frontend, defining interfaces between components, shaping devops and data infrastructure, and translating abstract ideas into functional systems. If you thrive in an environment with rapid feedback, direct impact, and long-term rewards, this position is ideal for you.ResponsibilitiesDesign and develop scalable APIs, backend services, and web application componentsContribute across the technology stack: data pipelines, agents, web UIs, and deployment systemsCreate and implement internal tools, testing frameworks, and CI/CD pipelinesCollaborate closely with product and design teams to quickly prototype and deliver featuresHelp establish engineering processes, contribute to documentation, and foster the early team cultureOur Technology StackWhile familiarity with the entire tech stack is beneficial, the ability to quickly learn and adapt to new technologies is paramount. You will encounter technologies such as:Languages: TypeScript (Node.js), Python (FastAPI)Frontend: React, Next.js, TailwindBackend: Postgres, DuckDB, GraphQL (Hasura), Kafka, RESTCloud/Infra: AWS, Docker, GitHub Actions, ArgoCD, Kubernetes (basic)AI/Agents: LangChain, LangGraph, OpenAI, Anthropic, LLaMA, Pinecone, QdrantGovernance: Keycloak, Open Policy Agent (OPA), OpenTelemetryVisualization: Vega, Flourish, React ReChart

Join clera, an innovative startup poised to make waves in the tech industry. As a Founding Engineer, you will play a pivotal role in shaping our product and technology from the ground up. Collaborate with our founding team to design and implement cutting-edge solutions that redefine user experiences.

Join Us as a Founding Engineer!At Brainbase, we're redefining the workforce landscape with AI Employees, akin to how Retool transformed internal tools.Imagine a world where AI collaborates seamlessly with human teams. Brainbase empowers businesses to develop their own AI workforce.In just one year, we've achieved $XM+ ARR and are on course to surpass $XXM+ soon. Our clientele spans from small and medium businesses to Fortune 50 corporations. We're proudly supported by Y Combinator, 500 Global, and other prestigious investors, including founders from YouTube and HubSpot, as well as notable YC alumni.About the RoleAs a pivotal member of our founding team, you'll play a crucial role in integrating AI into the enterprise landscape: launching innovative features, engaging with users, and fostering a vibrant company culture for future team members.You will collaborate closely with our CEO and founding team, focusing on enhancing our infrastructure (both cloud and on-premise) and refining our proprietary agent system based on user feedback.Who Should Apply?This position may be a perfect fit for you if:Resourceful: You excel in maximizing outcomes with limited resources, whether that be time, finances, or computing power.Resilient: You persist through challenges and only step back when you discover a more effective approach.Decisive: You make sound decisions under pressure, even with incomplete information, and swiftly move on to new challenges.Passionate about Problem-Solving: You thrive on tackling complex puzzles, games, or challenges, regardless of initial proficiency.Fun-Loving: You maintain positivity and uplift those around you, even during tough times.Key RequirementsAlongside the qualities outlined above, we seek candidates with the following qualifications: Essential SkillsLocation: Based in San Francisco or open to relocation.Work Authorization: Must have a valid US work permit (we do not sponsor H1-Bs; OPTs are acceptable).Minimum of 2 years of software engineering experience (recent graduates are encouraged to apply; personal projects are valued).Proficiency in Typescript and Python.Familiarity with Large Language Models (LLMs) such as OpenAI API, Langchain, or HuggingFace.

Join a dynamic client of Weekday, one of the fastest-growing startups from Y Combinator. Your application will be prioritized if submitted through this platform.About UsWe are an innovative early-stage startup focused on developing AI-driven tools that enhance consumer application user experiences automatically. Our product is already live and being utilized by millions of users worldwide, demonstrating impressive month-over-month growth.Supported by prominent investors and experienced operators, we are on an exciting journey ahead.Having raised over $5 million, we recently launched our product!The RoleWe are seeking a talented full-stack engineer to contribute to the development and scaling of our AI-powered experience editor. You will engage with both front-end and back-end technologies, significantly influencing our product and infrastructure.This role is high-impact, offering substantial ownership, rapid iteration, and real-world scalability exposure.What You'll DoDevelop essential features for our AI-driven editor and experimentation platform.Create scalable back-end solutions and deliver clean, user-friendly interfaces.Integrate new APIs and AI models to enhance intelligent user experiences.Work collaboratively with founders and customers.Take full ownership of projects from inception to completion in a fast-paced, hands-on environment.DetailsFull-time, in-person role located in San Francisco (Monday–Saturday).Must be authorized to work in the U.S.

About Uplane (YC F25)At Uplane, we are revolutionizing the advertising industry. Companies are losing billions due to ineffective ads, misaligned landing pages, and suboptimal budget distribution. Uplane addresses these challenges by integrating various agencies, spreadsheets, and isolated tools into a cohesive, self-optimizing AI platform. Our system not only generates advertisements but also crafts corresponding landing pages, optimizes budget allocation across diverse channels, and more. Join us in constructing the AI engine that will redefine how marketing budgets are managed and spent worldwide.About The RoleWe are on the lookout for an innovative and self-motivated AI Software Engineer to become a crucial part of our team in San Francisco. This full-time, on-site position presents an exceptional opportunity to take full ownership of product features from ideation to deployment in a dynamic startup environment.Why Join Us?Be among the pioneering employees of a well-funded startup.Tackle significant challenges in a vast market.Take charge of projects and experience rapid professional growth.Enjoy a culture that is fast-paced, ambitious, enjoyable, and humble.Key ResponsibilitiesCreate AI Systems: Design, develop, and maintain scalable AI solutions with LangGraph and TypeScript for automated marketing campaigns.Data Infrastructure Design: Build the data analytics framework that enables AI agents to enhance their intelligence over time.Architect Robust Systems: Construct and manage efficient database architectures using PostgreSQL and Supabase to ensure data integrity and performance.End-to-End Project Management: Lead projects through all phases, from concept to implementation, deployment, and ongoing support.User-Centric Feature Development: Utilize your product and design insight to create features focused on user needs and market trends.Collaborative Engagement: Work closely with the operations team and clients via Slack and Notion to align technical solutions with user expectations.QualificationsBachelor’s or Master’s degree in Computer Science, Data Science, or a related engineering field, or equivalent practical experience.Proficiency in programming languages such as TypeScript and experience with AI systems is preferred.Strong understanding of database management, particularly with PostgreSQL and Supabase.Ability to collaborate effectively within a team and communicate technical concepts clearly.

Join Pensive as a Founding EngineerAt Pensive, we are on a mission to revolutionize learning through technology. Check our Notion doc to dive deeper into our vision, founders, and vibrant culture.Your RoleAs a pioneering full-stack engineer at Pensive, you will be at the forefront of the AI revolution, developing software that empowers college instructors and students to learn quickly and automate processes. You will play a crucial role in building:An AI-driven grading and tutoring platform designed to save time for instructors and enhance learning for millions of students.Automation solutions across various business functions, from data management to customer onboarding, pushing towards a fully autonomous operational model.What We Expect From YouA minimum of 1 year of experience in software development.Proficiency in Python and React/Typescript.A fast and efficient development style, utilizing AI tools while maintaining clean, well-tested, and non-AI-generated code.A strong ability to learn rapidly and adapt to fast-paced changes.Bonus QualificationsExperience as a founder or in a founding engineering role.A personal workflow for generating and reviewing AI-assisted code.Our Technology StackBackend: Python, FastAPI, PostgresFrontend: Typescript, React, TailwindCSS, Tanstack RouterInfrastructure: GCP, Cloud Run, FirebaseMobile Development: CapacitorInterview ProcessInitial Interview Chat: 15 minutesTake-Home Test: 8 hoursPaid Work Trial

Join us at clera as a Founding Engineer specializing in matchmaking technology. This is a unique opportunity to be part of an innovative startup in the heart of San Francisco. As a founding member of our engineering team, you will play a crucial role in designing and building a cutting-edge matchmaking platform that connects users in meaningful ways.

Role OverviewLocation: San Francisco, CA Work Model: In-officeAbout Effective AIAt Effective AI, we are pioneering the future of work, focusing on sophisticated AI solutions for complex knowledge tasks rather than simple, repetitive functions. Our goal is to develop advanced AI Teammates that excel in intricate workflows and collaborate seamlessly with human professionals. Our initial challenge is to revolutionize the trillion-dollar U.S. Property & Casualty insurance sector, an area rich in data and complexity, ideal for our innovative approach.We have successfully secured $10 million in seed funding from prominent investors including Lightspeed Ventures and Valor Equity Partners.Our passionate team operates out of San Francisco, where we value in-person collaboration to address these pressing challenges.Your ResponsibilitiesAs a Founding Software Engineer, you will be an integral member of our founding team, significantly influencing the design and development of our core product from inception. You will confront critical challenges in agentic AI, crafting Teammates capable of managing essential insurance functions such as underwriting and claims processing.Specifically, you will:Facilitate long-term task completion by creating the foundational architecture for AI agents to plan and execute multi-step processes reliably over prolonged interactions.Develop advanced reasoning functionalities, enabling agents to make informed decisions based on ambiguous or incomplete information, akin to human experts.Create intelligent, tool-utilizing agents capable of selecting and employing a variety of external tools—APIs, databases, web searches, and Excel-based pricing algorithms—to gather information and take decisive actions.Design adaptive and learning systems, equipping our AI Teammates to learn from feedback and adjust to evolving conditions such as regulatory changes or market dynamics.Your ProfileWe seek an innovative and driven builder excited to tackle substantial challenges.You possess a solid foundation in computer science and remarkable problem-solving capabilities, evidenced by impactful projects or previous experience.Your genuine enthusiasm for AI fuels your passion for tackling complex issues.

Empowering Innovation in Software EngineeringAt TierZero, our mission is to revolutionize software engineering by enabling developers to focus on what they do best—building. Currently, engineers devote 50–70% of their time on operational tasks such as handling alerts, resolving incidents, answering queries, and monitoring deployments. We are developing cutting-edge AI agents designed to alleviate these burdens, thus unleashing creativity and accelerating development speed. The potential is enormous: a $1.5 trillion productivity market ripe for the taking.Why Join Us?Innovative Team: Our founding team comprises trailblazers in AI technology—seasoned engineers who played pivotal roles in shaping foundational systems at Facebook, Databricks, LangChain, and Brex. Our CEO boasts two successful ventures and previously managed cloud infrastructure for Pokémon GO, while our CTO was instrumental in Databricks’ AI model serving and agent initiatives that generated over $300 million in revenue.Transformative Clients: We collaborate with numerous enterprise engineering teams that have experienced significant improvements in reliability and productivity, many of whom eagerly serve as testimonials for our impact.Groundbreaking Product: We’ve developed a versatile agentic platform that integrates code, infrastructure, telemetry, and institutional knowledge. This holistic approach equips specialized AI agents for a variety of tasks, from incident analysis to engineering support. We take pride in offering the industry’s only 95% accuracy guarantee on agent outputs.Strong Financial Backing: Our endeavors are supported by esteemed investors such as Accel and SV Angel, early backers of prominent companies like Facebook, Atlassian, Slack, and Stripe.About Our SolutionsWhile modern AI tools have simplified coding, the engineering timeframe hasn’t accelerated correspondingly. This lag is primarily due to alerts, incidents, support requests, deployments, performance challenges, and the increasing operational complexity of contemporary systems. TierZero addresses these issues by implementing self-learning AI agents that autonomously manage operational workflows from start to finish, thereby reclaiming invaluable time for engineers and enhancing delivery efficiency.Incident Management: TierZero autonomously conducts impact assessments and root cause analyses utilizing existing telemetry, infrastructure, codebases, and documentation, proposing and executing code changes, rollbacks, and other remedial actions.Engineering Support: Beyond merely addressing common queries, TierZero delves deeper by investigating the root causes...

At Netic, we are revolutionizing the AI landscape for essential services that underpin the American economy.With $43 million in funding from notable investors such as Founders Fund, Greylock, Hanabi, and Dylan Field who spearheaded our Series B, we have empowered our clients to secure hundreds of thousands of jobs across various service sectors in North America. Our platform is now being utilized by companies that operate entirely on an AI-first model.Join a team of passionate innovators from leading organizations like Scale, Databricks, HRT, Meta, as well as distinguished institutions like MIT, Stanford, and Harvard, as we strive to integrate cutting-edge AI into the physical economy, tackling challenging problems with complex data and delivering immediate, impactful results.As a Founding Platform Engineer, you will take ownership of the semantic layer that powers our record-keeping system and facilitates the development of compounding products across the organization. This role is uniquely positioned within Netic due to the extensive scope and design of our platform. From day one, our system must operate seamlessly across various industries, geographic regions, and regulatory frameworks, necessitating a highly customizable platform that supports distinct workflows and business rules while remaining comprehensible and manageable for engineers in production.Your work will directly influence how dynamic workflows are constructed, packaged, and delivered to our customers. The abstractions you create will play a crucial role in the speed at which we can launch new products, enter new verticals, and address real-world edge cases without compromising reliability. If you are enthusiastic about crafting foundational systems where flexibility, accuracy, and developer experience are paramount, this is an exciting opportunity to build a resilient platform that will define our company.

ABOUT SPHEREAt Sphere, we believe that transformative advancements in trade infrastructure drive market expansion and reduced transaction costs. Just as containerization revolutionized goods transport and SWIFT transformed money transfers, we are tackling one of the last frontiers: compliance. With over 190 sovereign jurisdictions constantly evolving and interacting, navigating trade rules is a complex challenge.Our cutting-edge AI system, TRAM, intelligently processes global trade law, expertly resolves jurisdictional conflicts, and delivers compliance determinations that outperform human experts. We manage the entire compliance lifecycle—calculation, registration, filing, and remittance—with unmatched speed and reliability.Backed by a16z and Y Combinator. With a $21M Series A funding round and over 30% month-over-month growth, our esteemed clientele includes ElevenLabs, Replit, Deel, Runway, and Lovable.A small, agile team with a global impact. Each team member possesses ownership over a domain that would represent an entire team at a larger company. We operate out of our San Francisco HQ, requiring in-office presence five days a week.The challenge is continuously evolving. As we expand into areas such as input tax, withholding, e-invoicing, and tariffs, the complexity multiplies. Today, we handle tens of millions of transactions, with billions on the horizon.THE ROLECustomer experience (CX) is pivotal at Sphere. Trust is paramount when it comes to managing payments and tax obligations for our clients. Every aspect of the user experience—from modals and buttons to exports—must be executed flawlessly. Would you trust a payment platform filled with bugs and inconsistencies?We are seeking a passionate founding product engineer to enhance our CX, elevate it to new heights, and contribute to the development of innovative features and products aligned with our roadmap.In this role, you will work closely with customers, collaborate with our design and engineering teams, and engage directly with our CEO and Founder to actualize Sphere’s vision of creating a unified global market.WHAT YOU'LL DOWithin your first few weeks:Engage with numerous customers to identify their core pain points and prioritize features that address their needs.Collaborate intensively with design teams to bring those features to fruition.Consistently execute and launch features from start to finish on a daily basis.Participate in customer support as needed to deepen your understanding of our users and their challenges.

Location: Bay AreaRole: Founding Abuse Engineer Arena Intelligence provides transparent, real-world evaluations of AI models. Founded by researchers from UC Berkeley’s SkyLab, the company supports organizations worldwide with trusted benchmarks and monthly leaderboards used by millions. Arena’s team draws on experience from UC Berkeley, Google, Stanford, DeepMind, and Discord, and values truth, speed, and quality. The company encourages curiosity and welcomes people who want to make a difference in practical AI assessment. Role overview The Founding Abuse Engineer shapes the strategy and systems that keep Arena’s platform safe from misuse. This position covers everything from designing detection and enforcement tools to investigating threats and defending the integrity of Arena’s leaderboards. The work is both foundational and highly visible, setting standards for future trust and safety efforts as threats evolve. What you will do Design and implement systems to detect and prevent automated abuse and other misuse across Arena’s products Investigate threats and respond to new abuse tactics targeting AI model evaluations Collaborate with product, infrastructure, model collaborators, policy, and leadership teams to maintain secure and reliable leaderboards Define technical strategy for platform integrity and trust Establish the foundation for future trust & safety and abuse engineering work Collaboration This role works closely with teams across Arena, including product, infrastructure, policy, and leadership. The impact is direct: keeping leaderboards secure, intercepting harmful behavior, and ensuring Arena’s services can be safely deployed.