Founding Engineer at Kastle | San Francisco

About KastleKastle is revolutionizing the AI landscape in consumer lending. We collaborate with some of the nation’s leading mortgage lenders to enhance their contact centers and compliance operations utilizing cutting-edge AI voice agents.Supported by prominent investors including Y Combinator and Commerce Ventures, as well as seasoned professionals from Snapdocs, Google, and WePay, we are transforming the way millions of borrowers engage with financial institutions and how lenders operate efficiently at scale.This is a unique opportunity to join a pioneering team at the forefront of innovation, working with large-scale clients and real-world applications.Your RoleDesign and manage core systems that facilitate real-time AI voice and compliance workflows.Enhance performance metrics, achieving sub-700ms latency through event-driven architecture and parallel processing techniques.Deploy, maintain, and scale robust systems using Kubernetes and distributed subsystems.Develop a self-evolving AI system that learns from each customer interaction and integrates human feedback.Deliver rapid development from initial design concepts to live production within financial environments.Why Join Kastle?Impactful Work: Your contributions will directly influence borrower interactions at scale.Entrepreneurial Spirit: Enjoy significant ownership and autonomy over product, technology, and company culture.Rapid Learning: Gain daily insights from customer interactions and feedback loops.Attractive Compensation: Competitive salary, meaningful early-stage equity, and an opportunity to shape a category-defining company.Outstanding Team: Collaborate with a world-class founding team from companies like Verkada, NVIDIA, Apple, and Redfin.

About KastleKastle is revolutionizing the consumer lending landscape by developing an AI operating system, starting with the mortgage sector. We partner with some of the largest mortgage lenders in the United States, enhancing their contact center and compliance operations through innovative AI-driven voice agents. Supported by leading investors such as Y Combinator and Commerce Ventures, along with industry veterans from Snapdocs, Google, and WePay, we are at the forefront of redefining lending with artificial intelligence.About the RoleAs a Forward Deployed Engineer, you will take on the role of technical owner and project lead for our most significant accounts. Your responsibilities will involve immersing yourself with customers, translating their business workflows into production-ready AI agents, and overseeing the customer relationship as well as the strategic roadmap.ResponsibilitiesDevelop, configure, and deploy AI agents on Kastle’s platform to manage actual borrower workflows.Write high-quality backend and full-stack code (Python, Java, TypeScript) to integrate with loan servicing systems, data sources, and telephony platforms.Oversee the complete agent development life cycle: rapidly prototype, establish CI/CD pipelines, monitor live usage, iterate towards goals, and document best practices to expedite future projects.Clarify ambiguous customer requests, quickly prototype solutions, and evolve them into stable deployments.Serve as the technical representative of Kastle for key accounts, fostering trust through speed, empathy, and tangible impact.Incorporate customer insights back into the core product, influencing the development roadmap and reusable tools.What We’re SeekingA minimum of 1 year of engineering experience, along with at least 1 year of customer-facing experience.Expertise in Python, Java, or similar languages; comfortable building APIs and backend systems.Outcome-oriented mindset: prioritizing customer value and problem-solving over perfect abstractions.A strong work ethic with exceptional attention to detail; capable of independently managing projects from start to finish.Customer-focused: confident in engaging directly with business leaders as well as engineers.Preferred QualificationsExperience in a customer-facing engineering role (forward deployed, solutions engineering, etc.).Interview ProcessInitial screening interview with HR.Technical assessment involving coding challenges and system design discussions.Final interview with team members to assess cultural fit and alignment with company values.

About KastleKastle is pioneering the AI operating system for consumer lending, partnering with leading mortgage lenders across America to revolutionize their contact centers and compliance operations through AI-driven voice agents.Supported by Y Combinator, Commerce Ventures, and industry leaders from Snapdocs, Google, and WePay, we are transforming the way millions of borrowers engage with financial institutions.This is a unique opportunity to join a rapidly growing company that is already engaged with major clients and impactful production use cases.About the RoleWe are seeking a dynamic Enterprise Account Executive to bring Kastle’s innovative solutions to the boardrooms of the nation’s most sophisticated financial institutions and convert conversations into actionable deployments.This role demands a strategic mindset, a consultative sales approach, and the ability to navigate intricate enterprise sales cycles. You will play a crucial role in introducing our state-of-the-art AI agents into the operations of the largest banks and lenders in the country.As you excel in this role, you will also be tasked with building a high-performing go-to-market team to ensure Kastle's leadership in consumer lending across North America.Location preference: San Francisco, CA.What You’ll DoCreate and implement strategic sales plans to engage key accounts in mortgage lending, servicing, and consumer banking.Craft, execute, and successfully manage RFPs to deploy AI Agents within lenders' operations.Navigate complex, multi-stakeholder sales processes (C-suite, InfoSec, legal, and procurement) within large enterprise organizations.Predict sales activities and revenue outcomes.Generate and qualify outbound leads through proactive prospecting and networking efforts.Stay informed about industry trends to identify new opportunities and maintain a competitive advantage.Contribute to the refinement of our sales strategies and processes as we grow.Collaborate with founders and engineers to design and present tailored solutions.Help develop content and narratives that enhance enterprise credibility (case studies, articles, event presentations).Why Join KastleBe a part of reshaping the future of consumer lending in one of the fastest-growing AI companies in the financial services sector.

About KastleKastle is revolutionizing consumer lending with an innovative AI operating system, beginning with mortgages. We collaborate with leading mortgage lenders across America to enhance their contact center and compliance operations through AI-powered voice agents. Supported by Y Combinator, Commerce Ventures, and industry experts from Snapdocs, Google, and WePay, we are reshaping the lending landscape using cutting-edge AI technologies.About the RoleAs a Senior Applied AI Engineer, you will play a vital role in establishing the technical backbone of Kastle's AI platform. Your responsibilities will include fine-tuning large language models, crafting AI workflows for highly regulated enterprises, and ensuring that our voice agents facilitate accurate, compliant, and effective interactions with borrowers.This position is ideal for an engineer who is passionate about applied AI, eager to tackle real-world challenges, and excited to contribute to the foundation of an early-stage AI startup.What You'll DoAI Model Integration: Fine-tune and deploy LLMs for real-time voice interactions with borrowers.Prompt Engineering: Develop and refine prompt strategies to enhance AI performance and compliance.Evaluate LLMs and AI Agents: Create high-quality evaluations using proprietary datasets to benchmark AI agent performance and conduct experiments.Custom AI Solutions: Train and implement domain-specific AI models tailored for consumer lending.Scalability & Compliance: Guarantee that AI solutions adhere to regulatory standards (FDCPA, RESPA, TILA) while scaling efficiently.Data Pipelines & APIs: Construct robust AI-driven workflows that seamlessly integrate with loan servicing platforms.Continuous Optimization: Monitor performance metrics and consistently enhance agent quality and borrower experience.What We're Looking For2+ years of experience in building and deploying ML/AI systems in production environments.Strong proficiency in Python and deep learning frameworks such as TensorFlow and PyTorch.Experience with LLM orchestration frameworks (e.g., LangChain, LlamaIndex, or similar).Proven track record of delivering AI products that users rely on.Strong product mindset with the capability to translate business requirements into AI solutions.Excellent communication skills for effective collaboration across teams.

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

Summary: Join Interface as a Founding Engineer! We seek versatile engineers (ML, data, full-stack) who are driven, innovative, and eager to make a difference. If you're ready to challenge the status quo and build impactful solutions, we want you on our team! Your Profile:Make swift, informed decisions with a focus on outcomesProactively address issues before they escalateFluent in our technology stack (TypeScript, Python, Docker, LLMs, YOLO, Tesseract, PostgreSQL, AWS, React Native, etc.)Have a proven track record of building functional productsThrive in fast-paced environmentsYour Responsibilities:Engage with users/customers to understand their experiences, challenges, and requirementsDesign robust systems utilized by thousands at billion-dollar enterprisesDevelop autonomous data pipelines for auditing large volumes of documentsEnsure scalable infrastructure managementDeliver quickly – our mantra is progress over perfection.Important Insights:Collaborate directly with the founding team and customersUser needs take precedence over flashy featuresThe team works six days a week in our San Francisco officeEnjoy working in SF: vibrant atmosphere, pleasant weather, and access to the best tech ecosystem in the world Additional Information:We welcome applications from around the globe.We offer competitive compensation, substantial equity, and the chance to influence our early team dynamics.$3,000 referral bonus for successful hires.About Interface: We are pioneers in autonomous safety solutions for the industrial sector, focusing on error detection and correction in industrial documentation. Our AI-powered platform aims to automate compliance tasks across various domains. You will leverage cutting-edge technologies at the crossroads of LLMs, computer vision, and data frameworks to redefine industry standards.

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.

About HyperspellHyperspell is revolutionizing the Memory & Context Layer for AI Agents.AI agents are brilliant yet lack context.While AI agents excel in standardized testing, they struggle with real-world applications. Today's cutting-edge agents lack the contextual understanding that humans naturally acquire through diverse interactions. This context evolves with their tasks.Hyperspell empowers AI agents with contextual awareness by integrating with users' workspace data, creating a tailored memory and context layer.Our ValuesWe are committed to shaping the future through bold innovations. Our goal is to establish ourselves as the indispensable context layer for organizations, enabling all their AI agents to connect seamlessly. We embark on this journey not because it is easy, but because it is significant.We prioritize care — for our customers, their success, the future of AI, and most importantly, for one another. As we build the frontier of AI, we strive to be one of the most technologically advanced yet profoundly human companies in history — a place where we can enjoy shaping the future together.Our InvestorsOur vision is supported by esteemed investors such as Y Combinator, Afore Capital, Scribble Ventures, and Pioneer Fund. Our angel investors include leading figures from OpenAI, Anthropic, xAI, and DeepMind, alongside respected founders from Silicon Valley like Siqi Chen (Runway) and Julian Weisser (On Deck).Our FoundersFounded in 2024 by Conor Brennan-Burke and Manu Ebert, Hyperspell is driven by experienced leaders. Conor previously spearheaded growth at Checkr, overseeing a $30 million API product portfolio and earning the title of 'the most helpful founder in YC'.Manu brings over 15 years of expertise in machine learning and AI, having successfully sold two companies and led high-growth engineering teams at Airbnb. Interestingly, he acquired his first .ai domain in 2014, needing to send a fax to the domain authority in Anguilla to do so.About the RoleAs our founding platform engineer, your mission will be to construct the infrastructure that makes Hyperspell feel magical — swift, dependable, and effortlessly scalable. You will be responsible for the foundation upon which our entire product is built, ensuring that when customers entrust us with their data, we uphold their trust.

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.

Location: San Francisco, CA (In-person)Hours: Full-timeAbout NabihealthNabihealth is revolutionizing the behavioral healthcare landscape with a mission to deliver outstanding care to 100 million patients over the next decade. Our journey begins with a cutting-edge digital health platform tailored for eating disorders, utilizing an agentic care model that empowers clinicians to provide continuous, effective treatment. With the support of top-tier venture capital firms and our commitment, we've already made a positive impact on tens of thousands of patients.Your RoleAs a Founding Engineer, you will be instrumental in developing tools that enable clinicians to operate at their highest capability. Collaborating closely with the CEO, Chief Clinical Officer, and the care team, you will design and scale the internal systems that facilitate superior patient care. Your tasks will range from optimizing EHR workflows to creating clinical dashboards and automating backend processes, all aimed at enhancing the quality of care. This position is ideal for an engineer who excels in dynamic environments, is quick to adapt, and is passionate about improving healthcare.Key ResponsibilitiesEnhance EHR workflows to promote high-quality and efficient clinical careCreate innovative patient onboarding tools to simplify the intake processAutomate administrative processes including billing, revenue cycle management, and operationsDevelop internal tools that assist clinicians, operations teams, and leadershipWork in collaboration with clinical and operational teams to deliver fast and reliable systemsQualificationsMust be based in or willing to relocate to San Francisco — this is an on-site positionStrong attention to detail and design sensibility — you value a clean user experience, polished user interfaces, and intuitive toolsResourceful and agile — you produce results promptly without compromising on quality, thriving in uncertain situationsQuick learner — you adapt swiftly to new technologies, systems, and fieldsEmpathetic mindset — you prioritize creating solutions for real users, particularly patients and their healthcare providers

Why Become a Part of AngelList At AngelList, we're tackling some of the most complex challenges in venture capital and private markets. Join a team that prioritizes precision, urgency, and visionary thinking. If you aspire to influence the future of startup financing and development, this is your opportunity.About AngelListOur mission is to accelerate innovation by boosting the number of successful startups globally. We achieve this by constructing the financial infrastructure that simplifies investment in transformative companies.AngelList stands at the intersection of venture capital and the startup ecosystem, managing over $171 billion in assets and facilitating investments into more than 13,000 startups, including over 300 unicorns. Currently, 57% of top-tier U.S. VC deals involve AngelList investors. While we have achieved significant scale, our aspirations continue to grow.If you're passionate about shaping the future of private markets, we invite you to build with us.About the Role:Meridian is AngelList’s wealth platform tailored for private markets, creating wealth products for a burgeoning class of self-directed investors seeking unique access to private markets.Leveraging over a decade of AngelList innovation, Meridian expands the platform that has historically supported founders and fund managers to now encompass investors. This role is pivotal in crafting the next generation of products for private market investments.As a Senior Software Engineer on Meridian, you will lead the technical design and implementation of significant product interfaces spanning investing and portfolio management—from initial architecture decisions to product launch and iterative development. This is a founding engineer role on a zero-to-one product featuring substantial distribution, regulatory nuances, and infrastructural leverage. You will collaborate closely with product, design, compliance, and supply teams to redefine the experience of private market investing for the upcoming decade.We are also hiring a Founding Engineer for our new USVC product, and you will be considered for both positions.

Founding EngineerJoin Terac: The Premier Expert Network Driving Frontier ResearchLocation: San Francisco (in-person required) | Stage: Seed ($9M raised)At Terac, we are captivated by the vision of a future where agent-driven companies operate without traditional employees, yet still rely on human intelligence. As we stand on the brink of a new era where AI will handle most tasks with human oversight, Terac is poised to be the labor marketplace that fuels this post-AGI landscape.We are currently an expert network that supports cutting-edge research by constructing the foundational layer that facilitates on-demand human labor. Our partners integrate with us through API access to a diverse pool of research-grade experts. We manage sourcing, verification, screening, and payments, allowing our partners to concentrate on product development.Historically, jobs have transitioned from lifelong commitments to short-term engagements. From the stone age to the industrial era, and now platforms like Uber, the trend toward AI-driven labor marketplaces is undeniable and will only escalate in demand.Having successfully secured $9M in funding from notable investors including Emergence, SignalFire, Audacious, and Z Fellows, we are seeking innovative engineers with a founder's mindset to take ownership of critical components of our platform as we expand from research tools into the larger human data economy.Your Responsibilities:Lead and enhance the recruitment engine, utilizing targeted advertisements, referrals, automated outreach, and creative solutions to identify niche audiences.Develop and refine the Terac API for integration by research tooling and AI data companies.Implement the AI moderator, our voice agent designed to screen candidates, assess long-term tasks, detect fraudulent behavior, and facilitate multilingual conversations.Create marketplace systems that encompass opportunity routing, pricing optimization, expert lifetime value modeling, and feasibility analysis.Design the expert network experience, focusing on onboarding processes, opportunity matching, payout systems, and trust frameworks to retain experts.Collaborate closely with the CTO to influence technical strategies utilizing technologies such as Next.js, TypeScript, tRPC, Drizzle, Neon Postgres, LiveKit, and the Vercel AI SDK.Your Profile:A proactive builder with 3+ years of experience in software engineering, preferably in startup environments.

Location: San Francisco, CAType: Full-time, on-siteOverview: As the digital landscape evolves, we at AgentMail are at the forefront of a revolution that empowers AI agents with their own identities and communication tools. Our mission is to create solutions in an uncharted territory, where the challenge is to build something that truly resonates with agents as the new citizens of the internet. If you thrive in innovative environments and enjoy taking projects from inception to execution, we want to hear from you.About AgentMail: We are pioneering an API that transforms traditional email into a robust communication platform for AI agents. This is not merely AI applied to email; it's a groundbreaking approach to integrate email functionality directly into AI.We are seeking a founding engineer with a strong foundation in backend systems and infrastructure to develop the fundamental tools that agents will rely on for communication, authentication, and real-world operation. This position is ideal for someone passionate about systems engineering: from APIs and distributed infrastructure to reliability and developer tools.Why Join Us?Exceptional Team: Our founding team consists of industry experts with backgrounds in quantitative analysis, software engineering, and private equity, featuring talent from renowned organizations like Optiver, NVIDIA, Amazon, Modern Treasury, and KKR.Explosive Growth: Since January, we have doubled our user base every two weeks and anticipate continued rapid expansion as the demand for AI agents skyrockets.Unique Market Position: We are the only provider of identity solutions for AI agents, akin to how Gmail serves human users.Your Role:Design APIs and abstractions that are user-friendly for both humans and AI agents.Develop high-performance, low-latency systems with a focus on agent user experience.Engage directly with our core infrastructure, which processes hundreds of thousands of emails daily.Innovate by merging cutting-edge AI capabilities with traditional email solutions.Take ownership of projects from design through to production deployment.Produce clear, maintainable code accompanied by thorough technical documentation.Act as a liaison for customer feedback, representing their needs within our team.Qualifications:We are looking for candidates with a strong backend development background, ideally with experience in API design, distributed systems, and software reliability.

Overview:At Alleviate Health, we are pioneering the development of AI agents designed to significantly streamline clinical trials by autonomously engaging with patients for recruitment and ongoing support. Our mission is to resolve a critical issue that haunts executives at the world’s largest pharmaceutical companies, valued at over $100 billion.Having successfully bootstrapped our operations, we've secured major enterprise accounts and are experiencing substantial market demand. Following a successful $4.3 million seed funding round led by a16z, we are assembling a top-tier team to tackle one of the most pressing challenges in drug development while drastically reducing the timeline for delivering life-saving medications to those in need.Context:The process of conducting clinical trials is complex, fraught with challenges, and carries significant financial stakes. Pharmaceutical companies allocate tens of billions annually to ensure they can qualify and screen vast numbers of patients while maintaining contact over extended periods. Remarkably, around 80% of clinical trials are delayed due to recruitment issues, costing between $600,000 and $8 million for each day a trial is postponed.This labor-intensive challenge of patient screening, recruitment, and retention across numerous research sites is a fundamental bottleneck in clinical trials.About Alleviate:At Alleviate, we have developed state-of-the-art AI agents that autonomously manage patient recruitment and retention for clinical trials. Our agents conduct over 100,000 conversations monthly by:Intelligently screening and routing patients to appropriate trials.Collecting essential trial data from patients multiple times a week.Providing accurate answers to patient inquiries.

About AbacusAt Abacus, we are revolutionizing the operations of accounting firms through innovative AI agents that automate the monotonous and repetitive tasks currently faced by teams. Our cutting-edge core engine integrates advanced Optical Character Recognition (OCR) and Large Language Models (LLMs) to provide genuinely intelligent back-office automation solutions. We have already established partnerships with significant enterprise clients, generating substantial revenue, and are proudly supported by leading investors. Having achieved this milestone as a compact team of two, we are eager to expand our workforce. If you are passionate about shaping the future of AI-driven operations and are ready to take on impactful technical challenges from the outset, this is your opportunity.The RoleWe are seeking our inaugural Founding Engineer to take charge of and enhance the core machine learning engine that powers Abacus. Reporting directly to the co-founders, you will work on-site from our San Francisco office. This is a unique chance to join a rapidly growing company as an early engineer, endowed with significant autonomy and influence over both product and technical direction.In your first 3–6 months, you will:Enhance and scale our ML extraction engine utilizing LLMs and OCR technologies.Take ownership of backend architecture and infrastructure decisions.Develop and launch innovative features that broaden the scope of automated workflows.In the following year, you will play a pivotal role in establishing the foundation of our engineering organization as we scale, while remaining hands-on and focused on delivering impactful results.What You’ll DoLead the development of our machine learning-driven document extraction engine.Architect backend systems with an emphasis on performance and scalability.Create and deploy new automation features tailored for tax firms.Work closely with the founders to align on product and user requirements.Contribute to defining our engineering culture and establishing the technical roadmap.What We're Looking ForEssential Qualifications:1–5 years of experience, preferably in environments with high ownership or early-stage ventures.Proficient backend development skills, especially in Python.Demonstrated ability as a 0→1 builder, whether through side projects, startup experience, or both.Commitment to work from our SF office, five days a week.Willingness to complete a technical assessment as part of the application process.

Join us at Growl, the pioneering ad network tailored for consumer AI applications. In just 45 days since our inception, we've successfully expanded our publisher network to millions of users.About UsAs AI emerges as the predominant interface for internet users, integrating digital advertising into AI-driven experiences is becoming essential. Growl is at the forefront, aggregating resources across consumer AI applications to facilitate monetization through advertisements while enabling advertisers to connect with their target audiences more effectively.Supported by leading investment firms such as PearVC and Audacious Ventures, who have a track record of backing billion-dollar enterprises including DoorDash and WorkOS, we are also guided by advisors with extensive experience in mobile ad technology and consumer AI sectors. Our founder, Sahil Manocha, is a published researcher and has previously developed advertising infrastructure at Google.Our Progress We have already tackled the challenging cold start issue that ad networks face by successfully onboarding both advertisers and publishers. Our next steps involve enhancing our core infrastructure to deliver the most contextually relevant advertisements at optimal times.Your RoleAs a founding engineer, you will be instrumental in designing the ad delivery engine within AI applications and developing the supporting infrastructure. This position offers significant equity and a competitive salary ranging from $170K to $220K.What You Will BuildWe already handle millions of requests per minute, with expectations for dramatic growth in the coming months.Your projects will include:An ad decisioning pipeline that encompasses candidate retrieval, scoring, filtering, and final ranking, all under stringent latency service-level agreements (SLAs).A Publisher SDK for seamless integration that AI application developers can implement in just hours.A delivery infrastructure that includes pacing, frequency capping, budget management, and campaign throttling.An observability stack featuring real-time dashboards that track auction win rates, fill rates, revenue, and latency percentiles.

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.

Join Blueberry, a pioneering startup, as we transform the way brands connect with their audiences. Our mission is to re-establish the personal touch in marketing by enabling brands to engage authentically with their customers, even at scale. We are redefining customer engagement through deep insights and tailored interactions that resonate with each individual.As a Founding Engineer, you will play a crucial role in architecting the future of our platform. Collaborate closely with our founders and design team to build and enhance our core product, ensuring it meets the unique needs of brands with millions of followers. Your work will directly influence our technical infrastructure, product development, and company culture.Key responsibilities include:Developing and scaling our innovative product that empowers brands to connect with followers authentically.Making strategic architectural decisions that facilitate rapid development while preparing for future expansion.Translating client needs into effective technical solutions that prioritize speed, quality, and reliability.Cultivating a high-performance engineering culture characterized by collaboration and a focus on product excellence.

Founding Engineer – Baton AILocation: San Francisco, CA (In-Person)Experience Level: 3+ years (Full-Stack Engineering)About Baton AIBaton AI (getbaton.ai) is revolutionizing enterprise automation with a cutting-edge platform designed for seamless cross-application workflows. Our mission is to empower solutions engineering and implementation teams by automating customer onboarding and product setup, allowing them to deliver value at a faster pace and scale. This is just the beginning of our expansive vision for enterprise-wide, AI-driven automation.As a rapidly growing, VC-backed startup, we are seeking visionary builders who are eager to innovate, take initiative, and play a key role in shaping the future of AI automation.Your ResponsibilitiesLead Development of Core Systems – Architect and develop essential components of our full-stack web application, API infrastructure, and AI-enabled automation platform.Tackle Advanced Technical Challenges – Engage in complex tasks involving AI agents, prompt engineering, evaluation, monitoring, API integration, and browser automation.Influence Product Direction – Work closely with early adopters and the founding team to shape our technical roadmap and implement impactful features.Embrace Rapid Learning and Prototyping – Innovate, experiment, and deliver solutions swiftly in a high-trust, streamlined environment.Our Ideal Candidate3+ Years in Full-Stack Engineering – Strong proficiency in React and Typescript.Expertise in Modern Web Development – Familiarity with React/NextJS and Node.js. Knowledge of Python and Elixir/functional programming is advantageous.Experience with Rich-Text Editors – Previous work on features similar to those found in Notion or be eager to tackle this challenge.Interest in AI and Workflow Automation – A passion for developing AI/LLM-driven applications and automation tools.Product-Oriented Mindset – A commitment to clean code and exceptional user experience.Strong Problem-Solving Skills – Ability to navigate ambiguity and deliver results efficiently.Willingness to Work On-Site – Enthusiastic about collaborating in person in San Francisco.