Founding Sourcer at Runbook | San Francisco

San Francisco (In-Office)The OpportunityRunbook is revolutionizing the AI operations layer for the physical economy, which encompasses 40% of the U.S. GDP driven by logistics, field services, manufacturing, energy, and other essential industries that still rely on traditional, repetitive workflows.Founded by Obaid Khan, the visionary behind Motive, a company…

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

About NudgeNudge is on a groundbreaking mission to create the finest technology for brain interaction that enhances lives. Our innovative approach focuses on developing a non-invasive, ultrasound-driven device capable of stimulating and imaging the brain with exceptional resolution and depth. This initiative encompasses a vertically integrated effort that merges cutting-edge hardware, software, and research capabilities to produce products that can ultimately benefit millions, and eventually billions, of individuals.To achieve our goals, we strive to build world-class teams across all facets of our operations. We seek individuals who are not only experts in their fields but also passionate about taking on challenging tasks and executing them with unwavering commitment. Our culture is rooted in high standards of rigor and integrity, and we expect the same from our colleagues.Role OverviewAs a Technical Sourcer at Nudge, you will:Identify and source candidates for highly technical roles across the organization, focusing primarily on engineers and scientists.Collaborate closely with recruiters and hiring managers to gain a comprehensive understanding of role requirements, trade-offs, and hiring priorities.Translate ambiguous or evolving role definitions into clear and actionable sourcing strategies.Engage with candidates through thoughtful, personalized outreach, conducting in-depth analyses of profiles to differentiate genuine expertise from superficial experience.Share valuable market insights and candidate feedback to refine role definitions and enhance the hiring strategy.Continuously optimize sourcing techniques, tools, and workflows as the company scales.Candidate ProfileWe are on the lookout for technical sourcers at various levels, with a strong preference for candidates possessing a minimum of 3 years of industry experience. Regardless of your level, you should have:At least 3 years of experience in sourcing highly technical roles, primarily in engineering.Robust technical knowledge and the capability to swiftly grasp complex systems, technologies, and skill sets.Exceptional pattern recognition and judgment skills for evaluating candidate signals and identifying outstanding talent.Proven ability to source for niche or ambiguous roles where the pool of talent is limited.

Founding DesignerJoin Automat as a Founding Designer and play a pivotal role in shaping our platform and brand identity. Collaborate closely with our co-founder and CEO, Lucas Ochoa, to create an intuitive user experience that resonates with our vision of simplifying automation. Your design expertise will be crucial in crafting unique product experiences that are both aesthetically pleasing and functionally robust.About AutomatFounded by a talented team of creative technologists from esteemed organizations such as Google Creative Lab and Google Robotics at X, Automat is revolutionizing the way companies interact with AI. Our innovative solutions empower businesses to automate tedious tasks, enhancing operational efficiency and driving profitability. As we scale our operations, we invite you to be part of this exciting journey.What You Will DoAs a Founding Designer, you will lead the design efforts for Automat's platform. Your responsibilities will include establishing a cohesive brand language, collaborating with engineering teams, and developing user-centric designs that transform complex workflows into seamless automation experiences.Ideal Candidate ProfileExhibit exceptional design taste and creativityPossess the ability to navigate ambiguous design challengesHave a deep understanding of product design principles, especially in tech-driven environmentsDemonstrated experience in creating high-quality design outputs that align with engineering and business goals

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 Us as a Founding MarketerAt Vitalize, we are on a mission to revolutionize hospital operations through intelligent staffing solutions. We are seeking a Founding Marketer who will play a pivotal role in shaping our marketing strategies and defining our brand identity. This is an exciting opportunity to work closely with the founders, influence our narrative, and build a robust marketing framework that supports significant enterprise deals while establishing a compelling recruiting brand.In this role, you will have the autonomy to manage a generous budget and make key decisions that will impact our growth trajectory. Your contributions will be crucial in fostering executive trust and attracting top-tier talent.

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.

The OpportunityJoin Numeral at a pivotal moment in our growth journey as we scale from 80 to 300 employees within the next few years. We are not just looking for a recruiter; we need a strategic architect to help us maintain our culture and high standards while expanding our team.As our Founding Recruiter, you will go beyond simply filling positions. You will collaborate closely with our Founders and C-suite executives to define what excellence looks like in our hiring process. You’ll implement the necessary infrastructure, including tools like Ashby and scorecards, to elevate our recruitment strategy and actively seek out the leadership and engineering talent that will shape our future.Numeral is on a rapid growth trajectory, with plans to more than double our headcount in the coming year. To achieve this ambitious goal without compromising our culture or standards, we require a thoughtful talent partner to design our hiring system.In your role, you will be hands-on, driving initiatives and executing strategies to build a robust hiring framework.What You’ll Actually DoBuild the

Join Our Team as a Founding RecruiterAt Conversion, we are revolutionizing the marketing automation landscape with our AI-native platform tailored for modern software companies. Our innovative solution empowers growth teams to seamlessly manage their go-to-market strategies from acquisition to retention, utilizing AI agents to perform tasks that traditional tools like Marketo, HubSpot, and Pardot simply cannot handle.Having successfully raised over $28 million from esteemed investors including Abstract Ventures, True Ventures, and HOF Capital, our San Francisco-based team comprises talented engineers, designers, and operators who have previously excelled at industry giants such as Airbnb, Palantir, Pinterest, IMC, Shopify, LinkedIn, and Microsoft.

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.

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.

Join us at datacurve as we revolutionize the developer landscape with our innovative gamified platform. Here, thousands of engineers will collaborate to create high-fidelity datasets that push the boundaries of large language models (LLMs). As the Founding Recruiter, you will play a pivotal role in scaling our vision from the ground up, establishing a robust recruitment function that encompasses systems, processes, and branding. Initially, you will be a player-coach, actively sourcing, engaging, and securing top-tier talent while also laying the groundwork for a future recruitment team.Key ResponsibilitiesEstablish Recruiting Function: Develop and execute the recruitment strategy, including tools, processes, branding, and training initiatives to enhance our hiring capacity.Manage Full-Cycle Recruiting: Take charge of sourcing, evaluating, negotiating, and closing candidates for both technical (AI/ML/Engineering) and operational positions.Lead by Example: Engage in hands-on recruiting while simultaneously creating a strategic roadmap for future team expansion.Enhance Efficiency and Quality: Reduce time-to-fill, monitor funnel metrics, and implement rigorous standards throughout the recruitment process.Elevate Candidate Experience: Safeguard our employer brand, ensure swift communication, and facilitate a respectful and engaging hiring process.Conduct Effective Intake Sessions: Collaborate with hiring managers to thoroughly understand job requirements and set clear priorities.Source Talent Innovatively: Utilize diverse platforms beyond LinkedIn, such as GitHub and niche forums, to uncover hidden talent.Strategically Close Candidates: Personalize pitches to align with candidate motivations, clearly communicate compensation packages, and outmaneuver competitors.Train and Mentor: Equip the recruitment team with the skills to conduct effective, fair, and legal interviews; establish structured processes and evaluation rubrics.What We’re Looking ForDemonstrable full-cycle recruiting expertise, particularly in technical roles.Experience in Startups—preferably as a founding or first recruiter, valuing breadth of experience in smaller companies over depth in larger organizations.Familiarity with the San Francisco Market—possessing a strong local network and an understanding of prevailing compensation standards.Proven creative sourcing abilities—able to demonstrate effective strategies that have yielded results.Exceptional closing skills—capable of navigating competitive offers and tailoring narratives to resonate with candidates.Comfort in recruiting for AI/ML roles; knowledgeable about where to discover this talent.

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.

Founding RecruiterAbout UsAt FurtherAI, we are revolutionizing the insurance industry with cutting-edge AI agents, entering a trillion-dollar market primed for transformation. Supported by over $30M in funding from top-tier investors such as Andreessen Horowitz, Y Combinator, and Nexus, we are experiencing explosive growth, with our revenue multiplying tenfold this year. Our talented team is comprised of former professionals from tech giants like Apple, Microsoft, Google, and Amazon, all driven by a shared commitment to reshape one of the world's most essential sectors.Your RoleWe are seeking a remarkable Founding Recruiter to spearhead our recruitment initiatives and establish the foundation for our ambitious growth strategy.Key RequirementsDemonstrated experience in a startup environment with a track record of success.A strong desire for personal and professional growth.Full-time dedication to working onsite in San Francisco, five days a week.Why Join FurtherAI?Exceptional Growth Opportunities: As we scale rapidly post-product-market fit, this is your chance to be part of a remarkable growth journey from the very beginning.Collaborate with Elite Professionals: Partner with world-class engineers, operators, and founders who possess deep industry expertise.Significant Market Influence: Your contributions will play a vital role in shaping the future of the insurance sector.Ownership and Autonomy: Enjoy a founder's mindset with high levels of responsibility and the opportunity to build the recruitment framework from the ground up.Your ResponsibilitiesManage the entire recruiting process, sourcing, engaging, and securing top-tier engineers, operators, and product leaders.Collaborate closely with founders to anticipate hiring needs and create scalable hiring processes.Design and refine recruiting funnels, metrics, and candidate experiences.Promote FurtherAI’s vision and culture to prospective candidates.Forge strong connections within technical and entrepreneurial circles.Establish and document best practices, interview rubrics, and onboarding processes for our recruitment efforts.Ideal Candidate Profile3–5 years of full-cycle recruiting experience, ideally in a high-growth startup environment.

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

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 NabihealthNabihealth is revolutionizing the behavioral healthcare landscape with a mission to deliver outstanding care to 100 million patients over the next decade. Our groundbreaking digital health platform for treating eating disorders utilizes an agentic care model that empowers clinicians to provide continuous support. With tens of thousands of members already benefiting from our services and over $10 million raised from premier Silicon Valley investors, we are poised for significant impact.Your RoleAs a Founding Operations team member, you will set the gold standard for operational excellence within the organization. Your primary responsibility will be to construct the clinical infrastructure that underpins our care delivery. The systems and processes you develop will influence every aspect of the patient experience, from initial intake and onboarding to revenue cycle management.Working closely with the CEO, Chief Clinical Officer, and our clinical teams, you will play a vital role in shaping and executing the operational framework of the company. This position is ideal for a versatile generalist who thrives in dynamic environments, is adept at rapid problem-solving, and deeply values the importance of quality healthcare.Key ResponsibilitiesPatient Intake Operations: Spearhead and refine patient scheduling, referrals, and intake processes across various channels.Eligibility & Benefits: Guarantee precise coverage checks and benefit guidelines for nutrition services, including referrals, telehealth regulations, and plan restrictions.Revenue Cycle Management: Manage coding, claims submission, payment processing, and denial prevention to enhance reimbursement success.Process Quality & SOPs: Develop and uphold workflows, scripts, and quality standards to boost consistency, accuracy, and response times.

About TierZero TierZero helps engineering teams operate more effectively in the AI era. The platform supports teams managing code in production, aiming to close the gap between human decision-making and machine capabilities. TierZero improves incident response, increases operational visibility, and encourages sharing of knowledge within teams. With $7M in funding from investors including Accel and SV Angel, TierZero works with companies like Discord, Drata, and Framer to optimize their large-scale systems. Role Overview: Founding Product Designer This San Francisco-based role is the first product design hire at TierZero. The designer will work closely with the CEO, CTO, and engineering teams, and will be in direct contact with customers to gather insights and feedback. The position blends design with system thinking, with a focus on building trust and supporting better operator decisions. What You Will Do Design core workflows and dashboards for AI agents handling incidents and production issues. Translate complex system behaviors into clear, dependable user experiences. Develop safety guardrails and interaction patterns that make automation predictable and reversible. Work closely with engineers to shape product decisions and defaults, going beyond visual design. Create high-density, high-signal interfaces for engineers working under pressure. Define how people interact, supervise, and collaborate with AI agents. Build interaction models for extended, multi-step agent workflows. Iterate quickly based on customer feedback from real incidents and on-call scenarios. Contribute to many areas of the company, including product direction, sales presentations, and office culture. Why Join TierZero? Work with a seasoned team, including a CEO with multiple startups behind them and a CTO with deep AI engineering experience. Join a company that values input and creativity, where every team member shapes the work environment.

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.