---
title: 'Senior Full-Stack Engineer at Numos AI, inc.'
canonical: 'https://feeny.ai/job/senior-full-stack-engineer-numos-ai-inc-san-francisco-33bdse5dcwp9'
type: 'job'
last_seen: '2026-10-18'
---

# Senior Full-Stack Engineer at Numos AI, inc.

- **Company:** Numos AI, inc.
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-03-31
- **Last confirmed live:** 2026-10-18
- **Apply:** https://jobs.ashbyhq.com/numosai/979ea4ff-a86d-4e1e-9e82-05f26cb831d6

## Job description

We’re looking for a senior full stack engineer to help build the core systems behind AI teammates for finance. You’ll design and ship infrastructure that allows agents to initiate, execute, and complete real workflows across messy enterprise environments. This is not surface-level AI. You’ll be working on systems that combine reasoning, context, and action in production.

## What you’ll do

- Design and build end-to-end systems that power intelligent, outcome-driven workflows
- Own features across the stack, from backend services to user-facing interfaces
- Integrate AI models into reliable, auditable production systems
- Work closely with product and customers to solve real finance and accounting problems
- Build for scale, security, and enterprise-grade reliability from day one

## What we’re looking for

- 5+ years of full stack development experience
- Strong proficiency in Python
- Experience with modern cloud platforms (AWS, Azure, or GCP)
- Hands-on experience integrating AI/ML systems into applications
- Background in enterprise software architecture and distributed systems

## Why Numos

You’ll be building systems that don’t just assist work, but actually get it done. The problems are complex, the expectations are high, and the impact is real.

## About Numos AI, inc.

## Company Overview
- **One-liner**: Numos builds AI agents that automate accounting and FP&A workflows for enterprise finance teams, handling close tasks, reconciliations, AP/AR, and variance analysis.
- **Entity Type**: Private (Seed stage)
- **Headquarters**: San Mateo, California, United States
- **Founded**: Not publicly available
- **Founders**: Parijat Sarkar (CEO and Co-founder), Mitul Tiwari (CTO and Co-founder)

## Core Business
- Primary industry/industries: AI-powered Finance Automation, Enterprise Software
- Target customers: Mid-market to large enterprise finance teams (B2B)
- Mission or purpose statement: "We believe the best finance teams of the future will work alongside AI teammates, with more capacity to lead, think strategically, and drive the business forward." [numos.ai](https://www.numos.ai/company)

## Products & Services
- **Strategic FP&A**: AI agent that explains every variance in seconds, generates custom reports, and uses natural language processing to uncover the "why" behind numbers.
- **The Continuous Close**: Automates the month-end close process by executing checklists, reconciling bank transactions, and calculating accruals with audit-ready documentation.
- **Accounts Payable**: Orchestrates AP workflows, from invoice routing to payment triage, optimizing outflows without manual bottlenecks.
- **Accounts Receivable**: Streamlines the AR lifecycle, including complex invoicing, intelligent dunning, and automated revenue recognition.

All products are delivered as a subscription SaaS platform that integrates natively with existing ERPs and systems of record. [numos.ai](https://www.numos.ai/)

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total funding of $4.25M
- **Notable Investors/Partners**: Backed by General Catalyst (lead seed investor), Operator Collective, and leading angels/advisors including the former Chief Accounting Officer of Meta. [linkedin.com](https://www.linkedin.com/company/numosai)
- **Growth Signals**: Raised a $4.25M seed round in April 2026; featured in Axios and Built In; actively hiring across engineering and go-to-market roles; growing LinkedIn presence with 1,875 followers. [linkedin.com](https://www.linkedin.com/company/numosai)

## Competitive Advantages
- **Contextual AI Agents**: Numos builds a deep semantic layer above existing financial stacks, meaning its AI understands the specific business context, accounting policies, and entity structures of each customer—not just generic automation.
- **Auditability & Precision**: The platform is engineered for "absolute truth, auditability, and uncompromising accuracy," positioning it against "mostly accurate" competitors. [numos.ai](https://www.numos.ai/company)
- **Systems Over Symptoms**: Rather than building point solutions for isolated pain points, Numos architects foundational systems that address the root complexity of enterprise data. [numos.ai](https://www.numos.ai/company)
- **Zero-Disruption Integration**: Sits natively above existing ERPs and systems of record, requiring no replacement of legacy infrastructure. [numos.ai](https://www.numos.ai/)

## Strategic Focus
- **Category Creation**: Numos is carving out a new category in "agentic finance," moving beyond traditional RPA or simple rule-based automation. [linkedin.com](https://www.linkedin.com/company/numosai)
- **Enterprise Scale**: Building for large organizations that need secure, audit-ready, and compliant finance automation.
- **Talent Acquisition**: Aggressively hiring senior engineering talent (Full-Stack, Frontend, AI) and a Founding Growth Lead to scale the team and go-to-market motion. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/numosai)

## Why Work Here
- **Culture & Values**: The company emphasizes "Absolute Precision," "Systems Over Symptoms," and "Elegance in Complexity"—appealing to engineers and systems thinkers who enjoy solving deep, foundational problems. [numos.ai](https://www.numos.ai/company)
- **Work Model**: On-site (San Francisco Bay Area) for most roles, with some positions listed as "In-Office or Remote" across 7 locations. [builtin.com](https://builtin.com/company/numos-ai-inc)
- **Team Composition**: A small, focused team of ~10 employees, with 62% in technical roles—offering high impact and ownership for early hires. [linkedin.com](https://www.linkedin.com/company/numosai)
- **Backing & Trajectory**: Backed by top-tier VC General Catalyst and respected industry angels, providing strong validation and resources for growth.
- **Mission-Driven**: The opportunity to define how enterprise finance teams work with AI teammates, shifting them from "tactical operators to strategic orchestrators." [numos.ai](https://www.numos.ai/company)

## Sources
1. [numos.ai](https://www.numos.ai/)
2. [numos.ai/company](https://www.numos.ai/company)
3. [linkedin.com](https://www.linkedin.com/company/numosai)
4. [builtin.com](https://builtin.com/company/numos-ai-inc)
5. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/numosai)

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