---
title: 'Member of Technical Staff at Additive AI'
canonical: 'https://feeny.ai/job/member-of-technical-staff-additive-ai-san-francisco-445f5m03gs13'
type: 'job'
last_seen: '2026-11-08'
---

# Member of Technical Staff at Additive AI

- **Company:** Additive AI
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2025-09-09
- **Last confirmed live:** 2026-11-08
- **Apply:** https://jobs.ashbyhq.com/additiveai/04227f19-2ac8-438c-bc79-76ba837d8439

## Job description

## About You

You are an exceptional builder who wants outsized responsibility and impact, and have a demonstrated history of thoughtful and pragmatic decision making. You have designed, built, and maintained backend systems that delivered on complex problems with simple and robust code. You love tackling novel challenges, you are adept at finding third party tools that meet our needs, and can both quickly make something work and design it to scale and handle edge cases. You’re genuinely passionate about building, and are excited to be an integral part of a team of like-minded folks.

## Responsibilities

- Build the core systems that deploy our machine learning capabilities both in training and production, build metrics systems for rapid iteration and introspection, and help improve the performance of both by using your judgement to optimize for evolving technical and product requirements.
- Drive technology and architectural choices for Additive’s core services that will enable us to rapidly build and iterate on user experiences that enable our customers to do their best work.
- Design and build the integration of ML inference, monitoring systems, Large Language Model (LLM) interactions, application layers, and tax-related business logic into our core systems.
- Build out database layers supporting business logic and applications within our systems and data integration strategy with external vendor APIs and interfaces.
- Collaborate with the rest of the team on effective CI/CD systems that helps us all move faster.
- Engage directly with accountants to understand their needs and how we can best build a product that they absolutely love.
- Be expected to operate with autonomy and judgement to deliver tremendous value while working with both technical and market constraints.

## Requirements

- 5+ years experience working on backend systems in a meaningful ownership role for what was built and why, ideally for systems with meaningful data or ML workloads.
- Experience with ML concepts and integrating ML inference and monitoring capabilities into business applications.
- Comfortable with Python, cloud providers such as GCP/AWS, container technologies (e.g. Docker, Kubernetes, serverless platforms), and database and storage layers (e.g. Postgres, SQL, S3/GCS, Redis).
- We’re working fully in person 5 days per week in downtown San Francisco. Additive can cover relocation costs for moving to the San Francisco area.

At Additive we value diversity and are committed to an inclusive workplace. Additive is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sex, sexual orientation, gender, gender identity, national origin, disability, protected veteran status, or any other characteristic under federal, state, or local law. If you require an accommodation during the job application process, please notify jobs@additive.ai for support.

## About Additive AI

## Company Overview
- **One-liner**: Additive AI builds a generative AI-native platform that automates tax document processing—specifically ingesting and parsing complex K-1, K-3, and related forms—for tax and accounting professionals.
- **Entity Type**: Private (acquired by Thomson Reuters in September 2025)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2023
- **Founders**: Dwight Crow, Venky Iyer, Aaron Taylor

## Core Business
- **Primary industry**: Tax technology, AI-powered document processing, accounting software
- **Target customers**: B2B – Big 4 accounting firms, top 20 accounting firms, family offices, private wealth management groups, asset and wealth management firms
- **Mission**: Remove the friction that keeps tax and accounting professionals from doing their best work by automating repetitive data entry tasks

## Products & Services
- **Additive Platform**: A GenAI-native SaaS tool that extracts data from tax documents (K-1, K-3, 1065, 8865, 1041, 1120‑S, 65 state forms, etc.) with over 99% accuracy on income characters and over 95% on footnotes. Supports export to PDF, JSON, or Excel Workpapers. Includes an Excel Add-In and API for integration into existing workflows.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (acquired by Thomson Reuters; transaction terms not publicly reported)
- **Key Metric**: Seed round raised (1 investor); acquired by Thomson Reuters in September 2025
- **Notable Investors/Partners**: Thomson Reuters (acquirer); partnered with RSM US LLP (announced November 2024); trusted by Big 4 accounting firms
- **Growth Signals**: Acquired by Thomson Reuters within ~2 years of founding; headcount grew 23.5% YoY to 18 employees (as of mid-2025); LinkedIn reported 1,252 followers; annual web traffic up 165.4% YoY (though absolute numbers small)

## Competitive Advantages
- Purpose-built GenAI for tax documents, achieving >99% accuracy on K-1 income characters and >95% on footnotes—even complex tables.
- SOC 2 Type 2 compliant, security-first design trusted by Big 4 firms.
- Supports the widest range of forms (federal + 65 state forms) and exports directly into tax software workflows.
- “No training required” drag-and-drop interface, with an Excel Add-In and API for seamless integration.

## Strategic Focus
- Scale impact through Thomson Reuters’ global distribution, putting AI-powered document processing in the hands of many more firms.
- Continue to automate the most labor-intensive tax forms (K-1s, K-3s) to help firms do more with less amid staffing constraints and compressed filing timelines.
- Elevate advisory work by freeing tax professionals from manual data entry.

## Why Work Here
- **Culture**: Small, nimble team (18 employees) with a strong technical focus (33% in technical roles, ~43% specialists). Former staff come from major firms (PwC, EY, Deloitte, Anthropic, OpenAI). Notable alumni destination is Thomson Reuters.
- **Remote/Hybrid**: Headquarters in San Francisco; likely hybrid/remote-friendly given tech-forward profile (office locations in San Francisco only).
- **Notable perks/engineering culture**: Heavy use of modern AI/ML stack (PyTorch, TensorFlow, Keras, Kubernetes, Docker, Python, React). Focus on solving concrete, high-value problems for professionals. Being part of Thomson Reuters provides scale and resources while maintaining startup pace.

## Sources
1. [additive.ai](https://www.additive.ai/) – Product features, accuracy claims, security compliance
2. [LinkedIn – Additive | Part of Thomson Reuters](https://www.linkedin.com/company/additiveai) – Headcount, founders, acquisitions, company details
3. [Thomson Reuters press release (Sept 16, 2025)](https://www.thomsonreuters.com/en/press-releases/2025/september/thomson-reuters-acquires-additive-a-specialist-in-ai-powered-tax-document-processing) – Acquisition announcement, mission, product description
4. [Crunchbase – Additive AI](https://www.crunchbase.com/organization/additive-ai) – Founders, legal name, funding stage

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