{"schemaVersion":"jobsearcher.job.v1","id":"e3d2eb4e8ef14c644937a12c","url":"https://jobsearcher.com/jobs/e3d2eb4e8ef14c644937a12c","canonicalUrl":"https://jobsearcher.com/jobs/e3d2eb4e8ef14c644937a12c","title":"Founding Engineer - Abacus","description":"About Abacus\nAbacus is reinventing how accounting firms operate by building AI agents that automate the tedious, repetitive workflows that teams currently face. Our core engine combines advanced OCR and LLMs to deliver truly intelligent back‑office automation. We're already working with large enterprise clients, generating meaningful revenue, and backed by top‑tier investors. We’ve accomplished all of this as a team of two, and we’re excited to grow our team. If you want to shape the future of AI‑powered operations and own meaningful technical work from day one, this is the place.\n\nThe Role\nWe're hiring our first Founding Engineer to own and expand the core machine learning engine behind Abacus. You’ll report directly to the co‑founders and work in person from our SF office. This is a rare opportunity to join a high‑growth company as an early engineer with massive autonomy and influence over product and technical direction.\n\nIn your first 3–6 months, you’ll:\n\nImprove and scale our ML extraction engine using LLMs and OCR\n\nOwn backend architecture and infrastructure decisions\n\nBuild and ship greenfield features to expand the workflows we automate\n\nOver the next year, you'll help lay the groundwork for our engineering org as we scale, while staying hands‑on and focused on impact.\n\nWhat You’ll Do\n\nLead development of our ML‑powered document extraction engine\n\nArchitect backend systems with performance and scalability in mind\n\nBuild and deploy new automation features for tax firms\n\nCollaborate closely with the founders on product and user needs\n\nHelp define our engineering culture and technical roadmap\n\nWhat We're Looking For\nMust‑haves:\n\n1–5 years of experience, ideally in high‑ownership or early‑stage environments\n\nStrong backend development skills, particularly in Python\n\nProven 0→1 builder (side projects, startup experience, or both)\n\nWillingness to work from our SF office, 5 days/week\n\nWillingness to complete a technical take‑home exercise as part of the process\n\nNice‑to‑haves:\n\nExperience with LLMs, OCR, or data extraction systems\n\nExposure to AI infrastructure or evaluation frameworks\n\nWhy Join Us\n\nNo ceiling on ownership or growth\n\nSignificant equity and high‑leverage role at a fast‑growing startup\n\nTop‑tier health insurance, daily lunches, and an in‑office barista\n\nYou’ll help define the trajectory of the product, team, and company!\n\n#J-18808-Ljbffr","company":"Passfort","rawCompany":"passfort","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-06-22T03:15:48.920Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"17-2199.00","title":"Engineers, All Other","slug":"engineers-all-other"}],"industries":[{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Founding Engineer - Abacus","description":"About Abacus\nAbacus is reinventing how accounting firms operate by building AI agents that automate the tedious, repetitive workflows that teams currently face. Our core engine combines advanced OCR and LLMs to deliver truly intelligent back‑office automation. We're already working with large enterprise clients, generating meaningful revenue, and backed by top‑tier investors. We’ve accomplished all of this as a team of two, and we’re excited to grow our team. If you want to shape the future of AI‑powered operations and own meaningful technical work from day one, this is the place.\n\nThe Role\nWe're hiring our first Founding Engineer to own and expand the core machine learning engine behind Abacus. You’ll report directly to the co‑founders and work in person from our SF office. This is a rare opportunity to join a high‑growth company as an early engineer with massive autonomy and influence over product and technical direction.\n\nIn your first 3–6 months, you’ll:\n\nImprove and scale our ML extraction engine using LLMs and OCR\n\nOwn backend architecture and infrastructure decisions\n\nBuild and ship greenfield features to expand the workflows we automate\n\nOver the next year, you'll help lay the groundwork for our engineering org as we scale, while staying hands‑on and focused on impact.\n\nWhat You’ll Do\n\nLead development of our ML‑powered document extraction engine\n\nArchitect backend systems with performance and scalability in mind\n\nBuild and deploy new automation features for tax firms\n\nCollaborate closely with the founders on product and user needs\n\nHelp define our engineering culture and technical roadmap\n\nWhat We're Looking For\nMust‑haves:\n\n1–5 years of experience, ideally in high‑ownership or early‑stage environments\n\nStrong backend development skills, particularly in Python\n\nProven 0→1 builder (side projects, startup experience, or both)\n\nWillingness to work from our SF office, 5 days/week\n\nWillingness to complete a technical take‑home exercise as part of the process\n\nNice‑to‑haves:\n\nExperience with LLMs, OCR, or data extraction systems\n\nExposure to AI infrastructure or evaluation frameworks\n\nWhy Join Us\n\nNo ceiling on ownership or growth\n\nSignificant equity and high‑leverage role at a fast‑growing startup\n\nTop‑tier health insurance, daily lunches, and an in‑office barista\n\nYou’ll help define the trajectory of the product, team, and company!\n\n#J-18808-Ljbffr","datePosted":"2026-06-22T03:15:48.920Z","dateModified":"2026-06-22T03:15:48.920Z","hiringOrganization":{"@type":"Organization","name":"Passfort","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"e3d2eb4e8ef14c644937a12c"},"url":"https://jobsearcher.com/jobs/e3d2eb4e8ef14c644937a12c"}}