Technical Ex-Founder

About Retell AIAt Retell AI, we are pioneering the transformation of call centers utilizing groundbreaking voice AI technology founded on first principles.In just 18 months since our inception, we have empowered thousands of businesses to leverage Retell's AI voice agents for sales, support, and logistics calls, significantly reducing the need for extensive human teams. Supported by distinguished investors including Y Combinator and Alt Capital, we have achieved remarkable growth, scaling from $5M to $36M ARR with a dedicated team of 20.Looking ahead to 2026, our ambition is to develop a state-of-the-art customer experience platform that fully harnesses AI to operate entire contact centers. Rather than simple automation requiring constant human oversight, we are building intelligent AI “workers” capable of serving as frontline agents, quality assurance analysts, and managers, continuously optimizing customer interactions.As we expand rapidly, we are on the lookout for innovative minds eager to tackle challenging technical problems, move quickly, and make a meaningful impact at one of the fastest-growing voice AI startups.Join us in shaping the future.Featured among the top 50 AI apps in a16z's list: https://tinyurl.com/5853dt2xRanked #4 on Brex's list of Fast-Growing Software Vendors of 2025: https://www.brex.com/journal/brex-benchmark-december-2025Recognized as a top startup on: https://leanaileaderboard.com/

About TomaAt Toma, we are revolutionizing the automotive industry with our innovative AI-driven workforce tailored to the $2 trillion market.Our diverse team, comprising talents from esteemed organizations like Scale AI, Uber, Braze, Columbia, Berkeley, and Waterloo, has immersed itself in the dealership ecosystem to gain critical insights.We have developed a proprietary voice AI and workflow orchestration platform, achieved a remarkable growth of $100K ARR month-over-month through organic referrals, and secured investment from some of Silicon Valley's most influential investors as we strive to establish the world's first 'ghost dealerships.'

About Sully.aiAt Sully.ai, we are dedicated to transforming healthcare through innovative technology. Our goal is to ensure that every individual has access to top-tier medical professionals, as we believe that quality healthcare is a fundamental human right.Currently, the healthcare system is burdened by delays, misdiagnoses, and overwhelming administrative tasks that lead to clinician burnout. We are changing that.Our Mission: One Human, One Doctor. We develop AI-powered teammates, including scribes, nurses, receptionists, and translators, all utilizing our cutting-edge models to enhance real-world clinical care.Our Achievements:Over 450 organizations onboarded within the last 16 months.AI agents reducing administrative tasks by approximately 2.8 hours per day and streamlining onboarding by 85%.More than 5 million clinical tasks completed across 36+ specialties.Secured $25 million in funding from prominent investors including YC, Eric Yuan, Amity, and Semper Virens.Our patented MedCon-1 AI architecture outperforms leading models such as GPT-4.5, Gemini, and Claude in clinical reasoning.We are seeking top talent capable of delivering 12 months of output in just 4 months.Role OverviewWe are currently looking for exceptional individuals to join Sully.ai. If there's a mutual fit, our first conversation will focus on aligning your strengths and experiences with our priorities.Core ResponsibilitiesDesign scalable systems and processes to turn initial traction into consistent, metrics-driven performance.Collaborate closely with product and engineering teams to translate customer challenges into actionable workflows and product enhancements.Serve as a technical thought partner, evaluating edge cases, shaping AI behavior, and ensuring compliance with clinical and operational standards.Maintain close relationships with users, particularly clinicians, leveraging feedback and data to continually optimize workflows.Essential QualificationsExperience as a founder or a key member of an early-stage team scaling a SaaS or AI product to significant revenue.Strong technical background with an understanding of AI technologies and SaaS product lifecycle.

Role overview wispr-flow is looking for someone with founder experience to help define the company’s direction and drive growth. This position is based in San Francisco and centers on hands-on leadership and strategic input, drawing from a background in building and running startups. What you will do Use entrepreneurial experience to shape company strategy and day-to-day execution Work closely with the leadership team to guide the next stage of growth Apply a founder’s mindset to solve problems and make decisions Requirements Experience as a founder or co-founder of a startup Comfort working in a high-energy, changing environment Willingness to contribute vision and leadership to a growing team Location This role is onsite in San Francisco.

Please read firstThis is a full-time, in-person role based in San Francisco (Presidio) - we work from the office 5 days a week.Candidates must be based in the Bay Area or willing to relocate prior to starting.We require US work authorization, with the option for O-1 visa sponsorship for exceptionally qualified individuals.Join us as an ex-YC Founder at wordwareAbout Us: At wordware.ai, we understand that not every venture goes as planned. We're on the lookout for passionate founders who still possess the entrepreneurial spirit and are eager to join a burgeoning company where exciting developments are already underway.The Opportunity: With 400k sign-ups and the largest seed funding from Y Combinator at $30 million, we are pioneering a new frontier in natural language AI development. We seek individuals who know the ins and outs of building something monumental. If you've faced the challenges of entrepreneurship, we invite you to help us navigate our path.The Vision: Our target isn't just traditional developers; we aim to empower the next 500 million people who will engage with technology using plain English—lawyers, designers, product managers, founders, and domain experts from all fields. Opportunities like this are rare.Your Profile:You have experience running a YC-backed company.You understand what strategies succeeded and what didn't.You have the ambition to build something significant.You can adapt to various roles within the company.You possess knowledge of both technical and business aspects.P.S.: We are supported by Spark Capital, Felicis, and Y Combinator ($30 million seed—largest from YC), yet we operate with the agility of a startup. Be among the first to demonstrate how to create with AI in simple English.

Join futuresight as an Entrepreneur in Residence, where you will play a pivotal role as a Technical Co-founder (CTO). This is a unique opportunity for innovative minds looking to drive change and create impactful solutions in the tech industry. You will collaborate with a dynamic team to develop groundbreaking products and strategies that shape the future.

LexStaffing is developing a managed AI staffing platform tailored for solo practitioners and small law firms. The core product, Ava, serves as a virtual front desk, answering calls, collecting structured intake information, scheduling consultations, and handling outbound callbacks around the clock. Ava is more than a software tool: the team actively configures, trains, monitors, and improves her, allowing lawyers to focus on their cases instead of administrative tasks. The company operates under a Role-as-a-Service (RaaS) model, where clients value outcomes such as time saved, calls handled, and consultations booked. LexStaffing has validated both the problem and its solution, is running live pilots, and is now focused on technical reliability, delivery economics, and scaling the product in production. Role overview This is a co-founder CTO position for LexStaffing’s AI staffing platform. The role requires a long-term commitment, prioritizing equity growth and organizational success over immediate compensation. The CTO will play a central part in shaping both the technical direction and the company’s future. What you will do Design and maintain Ava’s voice and workflow systems with an emphasis on uptime and low latency. Reliability takes priority over surface-level features. Build internal systems that enable the team to configure, monitor, and improve AI performance, supporting scale without expanding engineering headcount. Balance AI quality and cost-per-call to ensure the platform remains profitable under a $499/month pricing model. Make key decisions about scalability and product readiness, always protecting product integrity and user trust. Take full responsibility for the technical lifecycle, from initial code to live pilot outcomes, aiming to deliver a tool lawyers depend on daily. Collaborate with the Founder to shape the product roadmap, focusing on features that reduce lawyers’ operational burden and cutting those that threaten delivery or economics. Build and lead a small, high-impact engineering team, setting standards for code quality, logging, and audit trails to ensure every AI outcome is transparent and reviewable. Represent LexStaffing’s technical vision and innovations to stakeholders and potential clients. Location This role is remote, with a connection to San Francisco, California, United States.

About DecagonDecagon stands at the forefront of conversational AI, enabling brands to deliver exceptional concierge-level customer experiences. Our innovative technology empowers industry leaders such as Avis Budget Group, Block’s Cash App, Square, Chime, Oura Health, and Hunter Douglas to deploy AI-driven agents that facilitate personalized and fulfilling interactions across voice, chat, email, SMS, and numerous other channels.At Decagon, we envision a future where customer experiences evolve from mundane support tickets and hold music to swift resolutions, enriching conversations, and stronger relationships. We are proud to be supported by premier investors who share our vision, including a16z, Accel, Bain Capital Ventures, Coatue, and Index Ventures, among others.As an in-office organization, we thrive on a collective commitment to excellence and speed. Our core values — Just Get It Done, Invent What Customers Want, Winner’s Mindset, and The Polymath Principle — guide our daily operations and foster team growth.About the Role:We invite aspiring founders to join Decagon's Founder's Office. This dynamic and impact-driven team of Founder Associates collaborates closely with our Founders and Executives to scale the business and establish the framework of a leading AI enterprise. You will play a pivotal role in addressing our most critical strategic and operational challenges as we expand. Your responsibilities will include driving strategic initiatives, identifying improvement opportunities, building efficient processes, and ensuring successful execution.

About incident.io incident.io is an AI-powered incident response platform that helps teams reduce response times and improve reliability. The platform brings together on-call management, incident response, AI SRE, and status pages, giving teams the tools to act quickly, limit downtime, and keep customers updated. Founded in 2021, incident.io now supports over 1,500 organizations, including Netflix, Airbnb, and Block, and has helped manage more than 500,000 incidents. Each month, tens of thousands of responders in Engineering, Product, and Support use incident.io to restore services and keep teams aligned. The company is growing quickly, fueled by $100M in investment from Index Ventures, Insight Partners, Point Nine, and several founders and executives from leading tech companies. Role at a Glance This Executive Assistant position supports Chris, the Co-Founder and Field CTO, and helps ensure the San Francisco office runs smoothly. The role is central to keeping operations on track and enabling Chris to focus on high-impact work. What You Will Do Act as the primary support for Chris, anticipating needs and protecting his time Coordinate closely with other executives based in San Francisco Maintain a strong presence in the office 3-4 days per week (team meets Mondays, Wednesdays, and Thursdays) Make quick, informed decisions in real time, often with limited context Organize events such as team offsites and prepare materials for key presentations Work with the People team or assist with scheduling for the SF leadership team Location and Schedule This role is based in San Francisco. Regular in-office attendance is required 3-4 days each week, with all-hands days on Mondays, Wednesdays, and Thursdays.

Special Setup: Join our innovative team living and working together in hackerhouses. We are seeking dedicated individuals who are ready to fully immerse themselves in our mission. Relocation to San Francisco is on the horizon, and we will assist you with your visa.About Clera:Clera is a dynamic AI startup revolutionizing the job search process for top talent. Collaborating with leading startups such as Mintlify, Luminai, and Windsurf, all of which are VC-backed, we have successfully raised $3M in pre-seed funding from prominent U.S. investors.Our approach prioritizes talent in the recruiting process, facilitating connections with companies, offering coaching throughout the journey, and ensuring candidates secure their dream jobs. By automating and enhancing processes within the $600 billion global headhunting industry, we strive to significantly improve outcomes for both candidates and employers. We are at a crucial juncture—right before takeoff—with a product, paying customers, and a team of high achievers.Your Mission:As we experience rapid growth, your role will be essential in providing an outstanding journey for the hundreds of exceptional candidates who approach us daily. You will connect them to life-changing opportunities at elite startups worldwide. This position is mission-critical.You will directly influence our goal of establishing Clera as the premier platform for ambitious individuals seeking remarkable opportunities and for leading companies searching for top-tier talent. We are looking for driven, ambitious overachievers ready to take ownership, spearhead initiatives, and shape the future of talent acquisition.Intensely Non-Remote & Hardcore:Living and working in a hacker-house in San FranciscoCollaborate and grow with a small founding teamNo commute, 10× feedback loops, and strong team bondingOur diverse international team includes members from Germany, Canada, and SwedenEngage in the largest talent market in the U.S. within the same time zoneExperience an intense yet extremely productive and enjoyable environment living and working togetherIf you thrive in fast-paced settings, enjoy managing complex workflows, and are motivated by tangible results, we would love to hear from you!

About UsAt Salient, we are revolutionizing the AI infrastructure that empowers the future of financial operations, focusing initially on automating the most intricate and challenging workflows in loan servicing.Proudly backed by leading investors such as a16z and Y Combinator, we've successfully raised $65M in Series A funding.We have achieved an 8-figure ARR within just 2 years, currently serving over 20% of the auto lending industry while processing millions of customer interactions daily.Our solutions are fully deployed with major financial institutions, moving beyond mere proofs of concept.We are excited to expand into new segments within the financial services landscape!Our vibrant office culture is based in the heart of San Francisco, CA.We deeply integrate with our clients, manage the complete tech stack, and are rapidly advancing to introduce modern AI technologies into regulated sectors where accuracy, dependability, and performance are paramount.The RoleIn this pivotal role within the Founder's Office, you will serve as a catalyst for the CEO and leadership team. This position is not about coordination; rather, it demands execution. You will tackle complex, cross-functional challenges (GTM strategies, product operations, compliance, customer delivery, and internal processes) and translate them into actionable plans with designated responsibilities and measurable outcomes.If you excel at identifying issues, devising strategic plans, aligning stakeholders, and managing projects to fruition without needing constant supervision, you'll thrive in our dynamic environment.What You'll DoCEO / Founder SupportOversee the CEO's operational rhythm: managing weekly priorities, tracking OKRs/KRs, ensuring meeting effectiveness, maintaining decision logs, and organizing follow-ups.Transform leadership discussions into actionable steps: drafting concise memos, documenting decisions, assigning responsibilities, and ensuring closure on tasks.Prepare for internal and external meetings: creating briefs, stakeholder maps, agendas, talking points, and orchestrating post-meeting actions.Strategic & Cross-Functional ExecutionLead special projects spanning Product, Engineering, Compliance, Sales, and Customer Success, often managing multiple initiatives concurrently.Develop streamlined systems: design dashboards, create templates, and formulate playbooks and operational routines that can scale effectively.Drive innovative initiatives: establish new customer onboarding plans, define pilot programs, create KPI frameworks, and conduct pricing and packaging analyses while redesigning processes.

Are you a results-driven individual ready to propel a groundbreaking startup in strategy, operations, and finance? Join us in revolutionizing the entertainment industry as a key member of our founding team!Act as a vital extension of the CEO, contributing directly to the company’s vision.Make a significant impact on our business direction from your very first day.Engage in the development, testing, and implementation of innovative business models.

Join futuresight as an Entrepreneur in Residence, where you'll have the unique opportunity to develop innovative solutions and lead groundbreaking initiatives. This role is designed for visionary leaders who aspire to shape the future of our organization and potentially step into a CEO or Founder position. You will collaborate with a dynamic team, leverage your entrepreneurial spirit, and contribute to the strategic direction of our company.

Join Mirelo AI as we revolutionize creative tools by developing state-of-the-art technology that transforms silent videos into rich audio experiences.Our innovative generative AI models bring sound, speech, and music to life, making it easier for storytellers around the globe to enhance their content for gaming, video platforms, and creative projects.With a recent successful $41 million Seed funding round co-led by Andreessen Horowitz and Index Ventures, we are poised for rapid growth across various departments including Product, Engineering, and Go-to-Market.About the RoleIn this dynamic early-stage startup, you will have a unique opportunity to engage with both strategic initiatives and hands-on operational tasks, providing essential support to our founders. We seek an ambitious individual who embodies ownership and embraces a diverse range of responsibilities.Key ResponsibilitiesAssist the CEO in prioritizing impactful initiatives while managing complex scheduling and logistics to ensure the team operates efficiently.Collaborate with the CEO on defining team structure, recruiting talent, and onboarding essential new hires.Manage relationships with external stakeholders, preparing for board meetings and investor updates through data collection and presentation design.Support finance and administrative functions throughout the organization.Engage in critical, time-sensitive projects that necessitate cross-functional collaboration.Help establish effective processes that maintain organizational structure as we scale while ensuring agility.Ideal Candidate ProfileExperience in fast-paced environments such as consulting, finance, or a business operations role at an early-stage startup.A proactive generalist adept at managing multiple priorities seamlessly.Highly organized and detail-oriented, with a proven track record of managing complex projects independently.

Join the forefront of innovation as the Co-Founder and CEO of futuresight, a pioneering company in AI WealthTech. We are seeking a visionary leader with a passion for technology and finance to drive our mission of revolutionizing wealth management through artificial intelligence.

About UsAt Roboflow, our vision is to revolutionize how we interact with the world by making it programmable. We believe that sight is a fundamental way we comprehend our environment, and we're committed to extending this capability into the software we develop.We are dedicated to building the essential tools, community, and resources required to empower users in deploying artificial intelligence effectively. Roboflow streamlines the process of creating and utilizing computer vision models, facilitating over 1 million developers—including teams from half of the Fortune 100—to harness machine learning through our open-source and hosted solutions. Our applications range from accelerating cancer research and enhancing construction site safety to digitizing floor plans and preserving coral reefs. Our innovation continues to push boundaries, including guiding drone flights and much more.With robust support from our clients and investors, we've successfully raised over $63 million from prominent backers including Y Combinator, Google Ventures, Craft Ventures, and notable figures like Sam Altman and Lachy Groom.Our team at Roboflow consists of passionate builders who thrive on ownership, accountability, and a proactive approach. We foster a culture of curiosity and hands-on engagement with new technologies, where showing results takes precedence over mere discussions. Many of our team members possess a founder mindset, thriving in our high-autonomy environment.

Important: Please Read FirstThis position is a full-time, on-site role located in San Francisco (Presidio). We expect our team to work from the office five days a week.Candidates must be local to the Bay Area or ready to relocate prior to commencing employment.We require work authorization in the US. However, we are open to sponsoring O-1 visas for outstanding candidates.Key Responsibilities:You should have a solid understanding of our context, enabling you to contribute with minimal onboarding.If you possess exceptional qualifications (such as raising over $5M as a founder, achieving a product with $500K ARR, or being the key person behind a standout product at a larger organization), we encourage you to apply for a discussion!P.S.: We're backed by Spark Capital, Felicis, and Y Combinator ($30M seed funding, the largest out of YC), yet we maintain the agility and spirit of a startup. Join us as one of the pioneering individuals demonstrating how to build with AI in straightforward terms.

Join us at futuresight as we propel the future of AI-driven benefits and InsureTech solutions. As a visionary leader, you will spearhead the development and implementation of innovative strategies that redefine industry standards and enhance customer satisfaction.In this pivotal role, you will collaborate with a dynamic team, leveraging cutting-edge technology to deliver exceptional products that address the evolving needs of our clients. Your expertise in strategic planning, team leadership, and market analysis will be crucial as we navigate the competitive landscape and drive sustainable growth.

Join futuresight as a visionary Co-Founder and CEO, leading our charge in AI RIA Compliance. In this pivotal role, you'll drive strategic initiatives, foster innovation, and shape the future of compliance in the financial sector. Your leadership will inspire a dedicated team as we revolutionize how AI can enhance regulatory adherence.

At Exa, we are revolutionizing the search landscape with our cutting-edge AI search engine, designed to surpass the capabilities of Google for power users. Our mission is to empower individuals to uncover information that is otherwise inaccessible: https://exa.ai/websetsBased in San Francisco, our team of approximately 80 talented individuals hails from prestigious institutions such as Harvard, MIT, Google, and Apple. Recently, we secured a Series B funding round led by Benchmark, propelling us forward in our quest to build the most intelligent search engine known to date.We are currently seeking a dedicated Executive Assistant to join our San Francisco office and provide vital support to our C-suite and team operations.Role OverviewAs an Executive Assistant at Exa, you will play a pivotal role in facilitating seamless operations for our leadership team. You will be tasked with managing schedules, coordinating communications, and ensuring efficient workflows. This dynamic position, characterized by a high degree of trust and variability, requires adaptability and quick problem-solving skills. You will serve as the essential link between our executives, the broader team, and our office environment.This role provides an unparalleled opportunity to gain insight into the inner workings of a rapidly scaling startup, working closely with the CEO and executive team to maximize their impact across the organization. Your responsibilities will include managing calendars, removing obstacles, and ensuring that no detail is overlooked.This position is perfect for someone who thrives in a fast-paced, ambiguous environment, possesses strong agency, and desires a front-row seat to the creation of an iconic company.Key ResponsibilitiesManage Scheduling and Calendar - Oversee the schedules of our founders, anticipating conflicts, safeguarding focus periods, and ensuring smooth daily operations.Handle Executive Communications - Assess the urgency of incoming communications, determining what requires immediate attention and what can be addressed later or managed directly by you.Coordinate Meetings - Manage all aspects of meeting logistics, including scheduling, agenda preparation, follow-ups, and ensuring the right participants are present.Support Senior Recruiting Efforts - Facilitate interview scheduling and logistics for leadership candidates, guaranteeing an exceptional candidate experience.Organize Team Events and Culture Building Activities - From weekly traditions to larger company gatherings, help cultivate a workplace culture that employees appreciate.Enhance Systems and Workflows - Continuously seek improvements in existing processes, with a focus on automation where possible.