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Founding Engineer at Abacus | San Francisco

Amari AISan Francisco
On-site Full-time

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Experience Level

Experience

Qualifications

Essential Qualifications1–5 years of experience in high-ownership or early-stage environments. Strong backend development skills in Python. Proven experience as a 0→1 builder. Availability to work on-site in San Francisco, five days a week. Willingness to undergo a technical assessment during the hiring process.

About the job

About Abacus

At 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 Role

We 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 Do

  • Lead 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 For

Essential 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.

About Amari AI

Abacus is at the forefront of transforming how accounting firms operate by leveraging cutting-edge AI technology to automate tedious workflows. With a strong foundation and impressive client base, we offer a vibrant environment for innovation and growth.

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