Software Engineer at fractional-ai | San Francisco

Join us at Comulate, where we are revolutionizing the insurance back office through advanced AI technology. Our platform is designed to transform costly and tedious accounting processes, marking the beginning of our mission to unlock the vast sums spent on manual operations within the insurance sector.In early 2025, we proudly announced our Series B funding, led by BOND & Workday, which comes as a testament to our remarkable growth and ambitious expansion plans.

At Comulate, we're revolutionizing the insurance back office through the power of artificial intelligence. Our innovative platform is designed to streamline costly and labor-intensive accounting processes, marking a pivotal step in our mission to unlock the vast capital tied up in manual insurance operations. Following our Series B funding announced in early 2025, led by BOND & Workday, we are poised for record growth and ambitious expansion plans.

At Comulate, we are revolutionizing the insurance back office through the power of AI. Our innovative platform streamlines costly and labor-intensive accounting processes, marking the beginning of our mission to unlock the vast sums spent on manual insurance operations. Our Series B funding, announced in early 2025 and led by BOND & Workday, follows a period of remarkable growth and ambitious expansion plans.Why Join Us?Unprecedented growth trajectory, achieving 8-figure ARR within just three years, placing us in the 95th+ percentile of startup growth.Demonstrated strong product-market fit, with users praising our platform as “the best thing since sliced bread” and “life-changing”.A lean and talented team focused on developing category-defining products for prominent public and private enterprises, driving significant ROI and sustainable operations.We are making bold, innovative bets for a dedicated customer base, with an exciting pipeline of new clients on the horizon.We are just beginning to realize our vision and are well-positioned to integrate AI into crucial workflows across the insurance sector.Role OverviewWe are seeking a Senior Software Engineer to join our in-office team in San Francisco. You will be responsible for developing essential systems, services, and customer-facing features from start to finish. Your work will involve transforming high-level objectives into tangible outcomes, navigating ambiguity, and innovating to discover optimal solutions. As an early member of our team, you will play a crucial role in shaping our company culture and team dynamics.Our technology stack includes: TypeScript, Node, Postgres, React, GraphQL (Apollo), and Next.js.Discover more about our engineering culture and insights on our engineering blog.Are You a Good Fit?A strong desire to innovate and improve software processes.

Join us at Comulate, where we are revolutionizing the insurance back office with cutting-edge AI technology. Our platform is designed to transform costly and time-consuming accounting processes, marking the beginning of our mission to unlock the vast resources spent on manual insurance operations.Our recent Series B funding, announced in early 2025 and led by BOND & Workday, is a testament to our remarkable growth and ambitious expansion plans.

At Comulate, we are revolutionizing the insurance back office through cutting-edge AI technology. Our innovative platform redefines costly and labor-intensive accounting processes, marking the initial phase of our mission to liberate the hundreds of billions of dollars currently spent on manual insurance operations.Our recent Series B funding round, announced in early 2025 and led by BOND and Workday, comes on the heels of unprecedented growth and ambitious expansion initiatives.Why Join Us?Join a company that has experienced record-setting growth, achieving 8-figure ARR in just three years, placing us in the 95th+ percentile for startup growth.Benefit from our strong product-market fit, as evidenced by enthusiastic customer feedback, with users hailing our platform as “the best thing since sliced bread” and “life-changing”.Work alongside a lean, talented team dedicated to creating category-defining products for both public and private enterprises, generating significant ROI and ensuring cash-flow positive operations.Be part of our commitment to taking bold, ambitious first-to-market risks, catering to a highly engaged customer base and a promising pipeline of new clients.Join us in the early stages of our vision as we capitalize on the substantial opportunity to integrate AI into core workflows across the insurance industry.About the PositionWe are looking for a Forward Deployed Engineer who is passionate about solving critical challenges for our largest clients. In this role, you will collaborate directly with customers to address high-impact issues, leveraging AI and your technical knowledge to achieve significant business outcomes. This position is perfect for an engineer who thrives where product development meets customer impact.Key ResponsibilitiesCustomer Discovery: Collaborate with customers to comprehend their objectives, identify pain points, and establish precise technical requirements.Solution Development: Create and implement features and scalable systems that deliver quantifiable customer results.

Join Comulate as we revolutionize the insurance back office through the power of AI. Our innovative platform redefines costly and labor-intensive accounting processes, marking our commitment to unlocking the vast sums of money tied up in manual operations within the insurance sector. After successfully announcing our Series B funding round in early 2025, led by BOND & Workday, we are poised for unprecedented growth and expansion.Why You Should Consider Joining UsExperience record growth, scaling from zero to an 8-figure ARR within just three years, representing a remarkable 95th+ percentile growth rate among startups.Enjoy a strong product-market fit as evidenced by enthusiastic customer feedback, with users describing our platform as “the best thing since sliced bread” and “life-changing”.Be part of a lean, talented team dedicated to creating category-defining products that deliver 7-figure ROI and maintain cash-flow positive operations, ensuring both employee ownership and minimized company risk.Engage in ambitious, first-to-market initiatives as we build a deeply committed customer base and explore an exciting pipeline of new clients.Join us in the early stages of our vision, ready to capitalize on the massive opportunity to integrate AI into core workflows across the insurance industry.About the RoleAs our inaugural Platform Engineer, you will be instrumental in shaping our cloud infrastructure, ensuring that our systems remain reliable, scalable, and secure. To keep pace with our rapid growth, we seek an experienced professional who can implement industry best practices from day one.Our technology stack includes TypeScript, Node.js, Postgres, React, Next.js, and AWS (ECS, RDS, ElastiCache). Explore more about our engineering culture and insights on our engineering blog.

Join Comulate as we revolutionize the insurance back office through cutting-edge AI technology. Our innovative platform streamlines costly and labor-intensive accounting processes, representing the first step in our mission to unlock the vast resources tied up in manual insurance operations. Following our recent Series B funding round in early 2025, led by BOND & Workday, we are positioned for rapid growth and exciting expansion initiatives.Why You Should Consider Joining UsWe are experiencing record growth, scaling from zero to an 8-figure ARR within just three years, showcasing our position in the 95th+ percentile of startup growth.Our strong product-market fit is evidenced by user feedback, with clients calling our platform “the best thing since sliced bread” and “life-changing.”Our agile, talented team is crafting category-defining products for major public and private enterprises, achieving 7-figure ROI and maintaining cash-flow positive operations, offering employees both significant ownership and minimized company risk.We are committed to making bold, first-to-market decisions for a dedicated customer base and have an exciting pipeline of new clientele.As we embark on this journey, we are in the early stages of realizing our vision and are well-positioned to introduce AI into core workflows across the insurance sector.About the RoleWe are on the lookout for a Technical Recruiter to spearhead and enhance Comulate’s technical recruitment strategy. You will take charge of sourcing, engaging, and securing top-tier technical talent while ensuring a seamless and considerate candidate experience from initial contact to job offer. As one of our founding recruiting team members, your influence will be pivotal in shaping our engineering team and defining our culture as we expand.Your ResponsibilitiesManage the full-cycle recruiting process, from initial outreach to candidate experience management and offer execution.Collaborate closely with hiring managers across various departments to understand unique hiring requirements, prioritize roles, and develop job descriptions that attract the best candidates.

At Comulate, we are revolutionizing the insurance back office through innovative AI solutions. Our cutting-edge platform streamlines costly and time-consuming accounting processes, paving the way to unlock billions in inefficiencies within manual insurance operations.Recently, we celebrated our successful Series B funding round, led by BOND & Workday, marking a significant milestone in our record growth and ambitious expansion plans.Why Join Us?Experience unprecedented growth, achieving an impressive 8-figure ARR within just three years, placing us in the 95th+ percentile for startup growth.Benefit from a strong product-market fit, as our users rave about our platform, calling it “the best thing since sliced bread” and “life-changing”.Join our agile, skilled team that is crafting category-defining products for both large public and private enterprises, delivering 7-figure ROI and ensuring a cash-flow positive operation.Be part of our bold initiatives to capture market opportunities with a highly engaged customer base and an exciting pipeline of new clients.Contribute to our vision as we are in the early stages of deploying AI into core workflows across the insurance sector, harnessing immense potential.About the RoleWe are looking for an Enterprise Customer Success Manager to join our dynamic customer operations team in San Francisco, focusing on maximizing customer success post-sale.Your ResponsibilitiesAct as the primary liaison for customers throughout their post-sale journey, overseeing implementation, onboarding, training, scaling, and growth.Foster meaningful relationships with key customer advocates, establishing yourself as a trusted advisor and product expert.Represent the voice of the customer internally, collaborating with product, sales, and support teams to address challenges and enhance our offerings.

Join a pioneering team of former Google engineers who have developed ground-breaking defensive technologies, such as Safe Browsing and reCAPTCHA. We are on a mission to confront an urgent challenge: combating the rising tide of adversarial AI attacks that threaten organizations globally.Operating in stealth mode, we are targeting a lucrative $5B+ market that is primed for innovation. Conventional detection methodologies are proving inadequate against the speed and sophistication of AI-driven assaults. Current adversaries are leveraging AI to engineer tailored, high-evasion attacks, leaving traditional systems vulnerable.Your Role:You will design a network of AI agents that are rapid, cost-effective, and precise, collaborating to identify and neutralize emerging threats. Your work will dive deep into real-time threat data, continuously evolving your agents in a fast-paced environment. These agents will function under an orchestration layer that fosters quick adaptation and learning.The Excitement of the ChallengeRapidly Evolving Models: The landscape changes daily; solutions that worked yesterday may be outdated today.Intelligent Adversaries: We are engaged in a real-time arms race against cunning, AI-enhanced attackers crafting sophisticated payloads.No Existing Playbook: We are forging new detection paradigms as swiftly as threats evolve. This high-stakes work places you in the heart of the action from day one.If you thrive on solving challenging problems with rapid feedback, this is your opportunity.Why We Are Positioned to SucceedExpansive Market: The market is vast at $5B and expanding quickly, while established players struggle to adapt.Proven Track Record: Our team has previously developed the foundational technology for Safe Browsing (serving over 5B users) and reCAPTCHA (protecting more than 5M websites) during our time at Google.Experienced Team: This is our third endeavor in creating a category-defining security enterprise, and we know how to scale our technology and our organization effectively.Deeply Integrated AI and Security: We embed AI from the outset rather than layering it on top.Top Talent: We hire only the highest achievers; many on our team were in the top 1% of engineers at Google. If you excelled in your previous role, you will fit right in.Agility: We prioritize speed and efficiency in everything we do.

Join Our Innovative Team at Simple AIAt Simple AI, we are transforming enterprise communications through cutting-edge voice AI agents. Our highly realistic agents empower leading companies such as DoorDash, xAI, and Omaha Steaks to efficiently manage a variety of phone operations, including customer support, order processing, and lead qualification.As we experience exponential growth and a surge in customer demand, we are seeking a few founding software engineers to help us navigate this exciting journey and develop systems for the future. Our passionate team operates from our vibrant San Francisco office five days a week, driven by a shared vision of leveraging AI to make a significant impact in the world.We are proud to be backed by esteemed investors and operators, including Y Combinator, Massive Tech Ventures, and industry leaders such as Michael Seibel (Twitch), Jared Friedman (Scribd), and more.

About the RoleJoin our innovative team at saris-ai, a pioneering applied AI startup based in San Francisco and Montreal. We are on a mission to redefine the banking industry by addressing a $100 billion annual challenge that is rapidly evolving. Our cutting-edge multi-turn AI agentic systems are at the forefront of this transformation.Our objective is to develop automated solutions that require sophisticated long-context reasoning, seamless tool integration across legacy systems, and stringent compliance mechanisms, particularly in scenarios where conventional answers are elusive.With successful real-world deployments and a rapidly expanding client base, we are seeking passionate and technically adept builders eager to make a significant impact from the start.We are in search of an AI Sales Engineer who will play a pivotal role in enhancing productivity and efficiency within financial institutions through innovative AI solutions. In this role, you will lead discovery calls with various departments to identify workflow challenges and design impactful AI-driven solutions. You will serve as the technical authority during sales cycles, assisting clients in recognizing problems, framing solutions, and articulating ROI.This position combines elements of customer engagement and workflow analysis.Your Key Responsibilities Include:Conduct discovery and technical scoping calls with potential clients to uncover operational inefficiencies in financial institutions.Develop workflow maps and reports to identify bottlenecks and pinpoint opportunities for agentic AI automation.Collaborate with the Sales team to co-manage the pre-sales process from initial discovery to proposal delivery.Engage with executive stakeholders, presenting clear and compelling insights on how Agentic AI can deliver measurable ROI and transform operations at scale.Work closely with cross-functional teams including sales, customer success, and product to ensure customer satisfaction and success.

Join Saris AI as an AI Systems Engineer, where you will play a pivotal role in designing and implementing innovative solutions that leverage artificial intelligence technologies. You will collaborate closely with cross-functional teams to develop AI systems that enhance our products and services, driving impactful results for our clients.

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.

Saris AI develops advanced AI automation for the banking sector, with teams in San Francisco, Montreal, and Toronto. The company addresses large-scale automation challenges, focusing on long-context reasoning, integrating with legacy systems, and meeting strict compliance needs. Saris AI’s AI agents are already active in production, supporting real customer workflows as the business expands. Role overview The San Francisco engineering team is seeking an Engineering Manager. This leader will guide engineers through shifting priorities and frequent ambiguity. The position involves building and leading teams, managing projects from concept to launch, and ensuring the delivery of reliable software that powers AI-driven products. What you will do Build and lead engineering teams focused on automation and AI Oversee software projects from initial idea through production launch Adapt to changing requirements and priorities as the company grows Address the technical challenges unique to deploying software in AI systems Requirements Proven experience building and leading engineering teams History of delivering software projects from start to finish Comfort working in environments where priorities and requirements shift quickly Understanding of the complexities involved in AI-driven software deployment Location This role is based in San Francisco.

About the RoleWe are on the lookout for a skilled Forward Deployed AI Engineer to join our dynamic team at Stack AI. This position is crucial for implementing enterprise-level AI solutions with an emphasis on Retrieval-Augmented Generation (RAG) pipelines and large language model (LLM) workflows. Your contributions will significantly enhance our offerings to Fortune 500 companies and enterprises across diverse sectors.Role Overview:In this role, you will seamlessly integrate large language models into enterprise systems, collaborating with strategic accounts to tailor solutions that meet their technical needs. Utilizing the Stack AI platform, you’ll engage with clients to co-create innovative solutions that address their evolving challenges.Key Responsibilities:Enhance and maintain solutions for strategic accounts using the Stack AI platform.Analyze and document requirements and relationships within target enterprise offices.Identify opportunities and provide insights to shape our go-to-market strategy.Directly contribute to the Stack AI codebase, transforming customer feedback into enhancements for the Python backend and React/Next.js TypeScript frontend.Project future opportunities and secure high-value contracts.Draft proposals, present to stakeholders, and lead engaging product demonstrations.Promote Stack AI at enterprise conferences and events.

About David AIDavid AI is pioneering the audio data research landscape, applying a rigorous R&D approach to dataset development akin to the methodologies used in AI labs for model creation. Our goal is to integrate AI seamlessly into real-world applications, with audio serving as the perfect entry point due to its inherent versatility and human connection. As the audio AI field progresses, the demand for high-quality training data becomes critical, and that's where David AI excels.Founded in 2024 by a team of experienced engineers and operators from Scale AI, David AI has quickly gained traction, serving prominent clients among FAANG companies and AI research labs. Recently, we secured a $50M Series B funding round from esteemed investors including Meritech, NVIDIA, Jack Altman (Alt Capital), Amplify Partners, and First Round Capital.Our team embodies intelligence, humility, ambition, and a close-knit ethos. We are on the lookout for exceptional talent in research, engineering, product, and operations to join us in advancing the frontiers of audio AI.About Our Engineering TeamAt David AI, our engineering team is responsible for constructing the pipelines, platforms, and models that convert raw audio into valuable data for top AI labs and enterprises. We pride ourselves on our collaborative environment, comprising product engineers, infrastructure specialists, and machine learning experts dedicated to leading the charge in audio data research.We operate at a fast pace, taking ownership of our projects from conception through to production. Our team develops real-time processing pipelines capable of managing terabytes of audio data daily while deploying innovative generative audio models.About This RoleAs a Product Engineer at David AI, you will design and implement state-of-the-art tools that enable our users to leverage audio data effectively for training their AI models. You will collaborate closely with researchers to continuously refine our data collection methodologies.Your ResponsibilitiesDeliver full-stack features that will be utilized by thousands of users on a daily basis.Develop scalable systems that create essential data processing pipelines, extracting actionable insights from terabytes of audio data each day.Construct, deploy, and assess LLM and DSP-based solutions to enhance our clients' comprehension of intricate features within our datasets.Rapidly iterate on research hypotheses by collaborating with researchers and the operations team to deploy enhancements efficiently.

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.

Join Our Team as a Machine Learning EngineerSaris-AI is a pioneering applied AI startup, based in San Francisco and Montreal, focused on revolutionizing the banking sector. Our mission is to address a colossal $100 billion/year challenge that is rapidly expanding, innovating the limits of what can be achieved with advanced multi-turn AI systems.We aim to automate complex workflows that necessitate long-context reasoning, orchestration of tools across legacy systems, and rigorous compliance processes—solving problems that currently lack definitive solutions.Our team has successfully deployed AI agents that manage real customer workflows effectively in production. As we expand our customer base and accelerate our growth, we are in search of highly skilled technical builders who aspire to make a significant impact in the early stages of our journey.As a foundational Machine Learning Engineer, you will own our entire ML stack and bring custom agents to life.

Responsibilities:Develop Our Product. Take ownership of software features that enhance our AI platform, empowering private market investors to analyze deals swiftly and accurately. This role requires you to actively engage in coding and delivering essential platform components from the ground up.Ensure Quality and Excellence. Establish and maintain coding standards, architectural guidelines, and review procedures; mentor fellow engineers. Co-cultivate a culture centered on practical, reliable, and test-driven development that swiftly meets business requirements.Scale for Growth. Assist in monitoring and scaling the architecture of our platform and its infrastructure.Collaborate Across Functions. Engage closely with product, security, and go-to-market teams to translate our strategic roadmap into actionable features and deliverables.