---
title: 'Software Engineer at Extend'
canonical: 'https://feeny.ai/job/software-engineer-extend-new-york-trdpr47e3hba'
type: 'job'
last_seen: '2026-09-08'
---

# Software Engineer at Extend

- **Company:** Extend
- **Location:** New York, NY
- **Employment:** full-time
- **Posted:** 2026-01-22
- **Last confirmed live:** 2026-09-08
- **Apply:** https://jobs.ashbyhq.com/extend/a8a99013-d200-4a84-80ae-14c71a5d6657

## Job description

Extend https://extend.app is building a modern document processing platform, reimagined with LLMs. We're on a mission to transform how the world works with unstructured data.

As a Software Engineer at Extend, you’ll be responsible for building our core platform that companies use to configure, test, and deploy document processing. We’re looking to hire exceptional engineers who care about crafting intuitive product experiences, relentlessly focus on the details, and operate with high agency.

## WHY YOU SHOULD CONSIDER JOINING

- We've grown revenue 4x last year to several million ARR, with our growth continuing to accelerate
- We have a product loved by users and being used in mission-critical flows at companies like Chime, Flatiron Health, Brex, Square, Zillow, Opendoor, Checkr, and many more
- We're building the next generation document processing platform — the market for document processing has expanded 1000x due to LLMs, and existing solutions are all low NPS
- We're punching well above our weight, supporting customer and revenue metrics with half the team size of other startups — everyone joining at this stage will have outsized impact
- We're tackling novel, unsolved problems at the intersection of LLMs, complex data processing, and human ↔ AI interfaces
- We're backed by world class investors, including YC, Homebrew, investors from OpenAI, and more
- You'll get a front row seat to how a successful startup is built with plenty of leadership opportunities as we grow quickly

We're a lean team, and our customer base is growing too fast for us to keep up. We're looking for talented engineers to join our founding team ahead of our next round and execute on an ambitious roadmap.

## IMPACT

We're powering mission-critical data processing at companies where if we get things wrong, there are real world impacts (e.g. missed payments, people can't move into homes on time).

Here's a few of the complex technical problems we're working on:

- How do we enable enterprises to deploy LLM-powered document processing into production with confidence?
- How do we handle never before seen edge cases in customer data?
- How do we build a self-correcting system that automatically gets better over time?
- How do we enable non-technical domain experts to improve models with their expertise & business logic?
- How do we help customers make tradeoffs between latency, cost, and performance?
- How do we build reliable systems that can process large data streams in real-time?

## ROLE

- Build, and maintain, durable, scalable systems capable of processing 10s of millions of data points per month.
- Design and implement the best human ↔ AI interfaces for designing and understanding document processing. We are building a new territory of UX that previously did not exist. It’s up to us to discover and implement new patterns that work for our users.
- Have complete ownership over the work you do — as a founding team member, you’ll have the opportunity to truly own large areas of product and engineering and have direct relationship with customers.
- Work directly with the CEO, CTO, and other founding members and help build out our team.

## IDEAL CANDIDATE CREDENTIALS

- Strong foundational understanding of computer science principles through coursework, personal projects, internships, or prior work experience
- 3+ years of professional software engineering experience (internships and part-time roles count!)
- Enthusiasm for building high-quality, user-facing products and interest in working across the stack
- Demonstrated ability to learn quickly, take ownership of projects, and work independently when needed
- Interest in AI/ML technologies and curiosity about building products powered by LLMs

## BENEFITS

Beyond the below, we care deeply about each of our candidates on a personal level. We take the time to understand your needs to craft a package designed for you:

- Insurance - 90% health insurance premium coverage
- Relocation - for candidates based outside of NYC
- Unlimited PTO policy - we trust everyone like owners, take what you need
- Daily lunch & snacks covered (plus dinner if you're in the office late) - you'll never go hungry and you help pick the snacks
- Unlimited token / tooling access - no handicaps on your productivity
- Learning and development investment - we invest heavily in our team and support your growth

Extend is an Equal Opportunity Employer. We consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, citizenship status, marital status, pregnancy, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.

## About Extend

## Company Overview
- **One-liner**: Extend provides a unified document processing platform with APIs and tooling for technical teams to parse, extract, and split complex documents with high accuracy.
- **Entity Type**: Private (Series A)
- **Headquarters**: New York City, New York, United States
- **Founded**: 2023
- **Founders**: Kushal Byatnal (CEO), Eli Badgio, Hari Anbarasu (CTO)

## Core Business
- **Primary industry/industries**: Document processing infrastructure, AI/ML document extraction, enterprise SaaS
- **Target customers**: B2B; technical teams at fintech, healthcare, real estate, and other companies dealing with high-volume, complex documents (e.g., Chime, Brex, Flatiron Health, Opendoor, Checkr)
- **Mission or purpose statement**: To make production-ready document processing accessible – turning messy documents into high-quality data with unmatched accuracy, delivered in days instead of months.

## Products & Services
- **Extend Document Processing APIs**: A suite of APIs for parsing, extraction, classification, and splitting of documents. Supports any format (PDFs, images, emails) using state-of-the-art vision models (VLMs) and OCR. Includes multi-step extraction with semantic chunking, bounding boxes, and citations for >95% accuracy.
- **Extend Studio & Evals (low-code tooling)**: Empowers domain experts to iterate, review results, and improve accuracy without deep engineering involvement. Includes built-in evaluation tools to benchmark performance and maintain confidence.
- **Custom Document Splitter**: Identifies and separates distinct sections and relationships in lengthy or multi-document packages, critical for ingestion pipelines.
- **Fine-tuning Pipelines**: Turns human-reviewed corrections into custom models, continuously improving accuracy over time.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (latest Series A led by Innovation Endeavors at $17M post-money valuation likely).
- **Key Metric**: Annual Revenue $8.5M (based on available data); Total Funding $34.6M across 4 rounds (Pre-Seed, two Seed rounds, and a $17M Series A in 2025 led by Innovation Endeavors).
- **Notable Investors/Partners**: Innovation Endeavors, Y Combinator (Winter 2023 batch), and other unnamed investors. Key customers include Chime, Brex, Flatiron Health, Opendoor, Checkr, Vendr, Tesorio.
- **Growth Signals**: 200% YoY headcount growth (from ~8 to 24 employees); LinkedIn followers up 96% yearly; recent launch of the platform; multiple customer testimonials citing best-in-class accuracy.

## Competitive Advantages
- **Unified platform** that combines models, infrastructure, and tooling – eliminating the need to stitch together different OCR, parsing, and evaluation solutions.
- **Proven >95% accuracy** on the most complex documents (tables, handwriting, charts, signatures) via specialized vision models and multi-step extraction.
- **Speed to production** – customers go live in days, not months, using low-code tooling and pre-built pipelines.
- **Continuous improvement loop** – fine-tuning pipelines turn reviewed corrections into custom models, making accuracy increase over time.
- **Strong customer adoption** among high-profile fintech and healthcare companies that require mission-critical reliability.

## Strategic Focus
- Scaling the document processing cloud to handle more complex use cases and document types.
- Expanding the platform’s low-code and evaluation capabilities to enable non-engineers to manage document pipelines.
- Growing the team (currently 24, hiring aggressively for engineering, sales, and customer success roles).
- Deepening integrations with existing enterprise systems and LLM workflows.

## Why Work Here
- **High-growth environment** – 200% headcount growth YoY, fresh Series A funding, and a product already used by marquee customers.
- **In-office culture** – HQ in New York City (SoHo area) with all roles currently in-office; offers a collaborative team atmosphere.
- **Strong technical challenges** – Working on cutting-edge AI (VLMs, document understanding, fine-tuning) applied to real-world business problems.
- **Perks & benefits** – Health/dental/vision insurance, generous parental leave and PTO, company equity, life insurance, 401(k), travel concierge, and team outings.
- **Employee rating** – 4.4/5 on employer review sites (5 reviews), with high marks for work-life balance (4.4) and career growth (4.3).
- **Diverse team** – 80% technical staff (engineering, research), with founders actively involved in day-to-day work.

## Sources
1. [Y Combinator - Extend](https://www.ycombinator.com/companies/extend)
2. [LinkedIn - Extend](https://www.linkedin.com/company/extend-app)
3. [Built In - Extend (extend.app) Careers](https://builtin.com/company/extend-extendapp)
4. [Wellfound / VentureRadar - Extend](https://www.ventureradar.com/organisation/Extend/4d8bf74a-e2a3-4d38-85d2-013ca997d036)
5. [Extend Website](https://www.extend.app/)
6. [Extend Careers (Ashby)](https://jobs.ashbyhq.com/extend)

## Other roles at Extend

- [Founding Revenue Operations Lead](https://feeny.ai/job/founding-revenue-operations-lead-extend-new-york-pzs5pfhj4w6a) — New York, NY
- [Founding Pre-Sales Solutions Engineer](https://feeny.ai/job/founding-pre-sales-solutions-engineer-extend-new-york-18bgnqgscaxg) — New York, NY
- [Growth Engineer](https://feeny.ai/job/growth-engineer-extend-new-york-5h09cdrvfje2) — New York, NY
- [Growth Associate](https://feeny.ai/job/growth-associate-extend-new-york-0qcnbdeq0x75) — New York, NY
- [Machine Learning Researcher](https://feeny.ai/job/machine-learning-researcher-extend-new-york-b08veeveben3) — New York, NY
- [Founding Account Executive](https://feeny.ai/job/founding-account-executive-extend-new-york-263h957pht1r) — New York, NY
- [Forward Deployed Engineer](https://feeny.ai/job/forward-deployed-engineer-extend-new-york-rxtpd7x50vaf) — New York, NY
- [Applied AI/ML Engineer](https://feeny.ai/job/applied-ai-ml-engineer-extend-new-york-yj2478ttr1km) — New York, NY
- [Staff Software Engineer](https://feeny.ai/job/staff-software-engineer-extend-new-york-m3y8pdagk4sf) — New York, NY
- [Software Engineer](https://feeny.ai/job/software-engineer-trace3-colorado-springs-dcdm25jsktt8) — Colorado Springs, CO