---
title: 'Senior Software Engineer at FERMÀT'
canonical: 'https://feeny.ai/job/senior-software-engineer-fermat-san-francisco-qsbedpfreqg6'
type: 'job'
last_seen: '2026-09-08'
---

# Senior Software Engineer at FERMÀT

- **Company:** FERMÀT
- **Location:** San Francisco, CA
- **Posted:** 2026-02-02
- **Last confirmed live:** 2026-09-08
- **Apply:** https://job-boards.greenhouse.io/fermat/jobs/4115754009

## Job description

FERMÀT is the leading commerce AI platform that partners with the world's largest brands to deliver dynamic, personalized shopping experiences. Our technology powers the customer journeys behind enterprises like GNC, Backcountry, and Glossier and allows them to deliver best-in-class shopper engagement and conversion while enabling them to stay on the cutting edge of what's possible in agentic commerce.

We're backed by VMG, Bain Capital Ventures, Greylock, and QED, and have been named The Information's #1 commerce startup. We're a 60+ person team based in SF, NYC, and Bangalore — come build the infrastructure of the future of commerce with us!

About the Role:

We’re looking for exceptional engineers who can operate across teams, stacks, and problem spaces, and turn ambitious ideas into production-grade systems.

This is not a narrowly scoped, team-specific role. You’ll work wherever impact is highest across our platform: core infrastructure, customer-facing features, data systems, internal tooling, or new product initiatives.

We’re especially interested in engineers who are AI-native in their workflow. You use modern AI tools to increase velocity, improve quality, and explore solutions faster. You have strong product instincts, operate with high agency, and care deeply about shipping meaningful outcomes.

If you thrive in ambiguity and enjoy owning problems end-to-end, we’d love to talk.

What You'll Work On:

- Own high-impact initiatives from concept through production.
- Design and build scalable backend services, APIs, and frontend experiences.
- Prototype quickly and iterate based on user feedback and business impact.
- Move fluidly across different parts of the stack as company needs evolve.
- Improve engineering quality and velocity through thoughtful use of AI tooling.
- Contribute to architectural decisions and help raise the bar across engineering.

What We're Looking For:

- 4+ years of professional software engineering experience.
- Experience as a founder, or as an early engineer at a startup.
- Strong product sense and a track record of shipping meaningful features or products.
- AI native workflow: you actively use LLMs and modern coding agents to meaningfully increase leverage.
- Ability to work across multiple stacks without rigid specialization.
- Strong systems design fundamentals and comfort owning production systems.
- High agency, strong judgment, and comfort operating in ambiguity.
- Clear communication and low-ego collaboration.

Please include GitHub, side projects, demos, or write-ups of products you’ve built. We prioritize engineers who consistently ship.

## Benefits

- Compensation: $200-$240k base + bonus
- Comprehensive health, dental, and vision insurance for you and all your dependents.
- Retirement benefits:
- US: 401(k) plan with 4% matching
- 4 months of paid parental leave
- Unlimited PTO policy (with minimum 5 days PTO / quarter!)

## About FERMÀT

## Company Overview
- **One-liner**: FERMÀT is an AI-native commerce platform that turns real shopper behavior into revenue by helping brands detect patterns, recommend experiments, and generate adaptive shopping experiences at agent speed.
- **Entity Type**: Private (Series B)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2021
- **Founders**: Rishabh Jain (CEO) & Shreyas Kumar (CTO)

## Core Business
- **Primary industry**: AI-powered ecommerce optimization / Agentic commerce platform
- **Target customers**: B2B – mid-market to enterprise ecommerce brands (e.g., GNC, Away, Backcountry, Scotts Miracle-Gro, BISSELL, Glossier, ILIA Beauty, Unilever’s Olly)
- **Mission**: Help marketers create personalized, high-converting shopping experiences at scale – for both human and AI agent shoppers – without requiring an army of engineers.

## Products & Services
- **FERMÀT Commerce Brain**: A proprietary, anonymized behavioral graph that powers AI merchandising, offer generation, and full-funnel personalisation across touchpoints.
- **Pierre Strategize AI**: An AI agent that builds full‑funnel marketing strategies by learning from store performance and audience behavior.
- **Pierre Data Explorer**: Allows marketers to ask questions in natural language and instantly query the shopper behavior graph.
- **Heatmaps & Funnel Visualizer**: Visual tool that shows how customers move through a store, directly tied to page elements.
- **AI Search Commerce Engine**: Generates first‑party, shoppable content that drives discovery across leading AI tools.
- **Core Platform (Agentic Suite)**: Replaces separate analytics, A/B testing, merchandising, and landing page tools with one closed‑loop system: detect → recommend → generate → measure.

## Market Standing
- **Valuation**: Not disclosed
- **Key Metric**: Total funding of **$74M** (Seed $12M in Sep 2022, Series A $17M in Mar 2024 led by Bain Capital Ventures, Series B $45M in Jun 2025 led by VMG Partners) – reported annual revenue of **$3M** (LinkedIn estimate).
- **Notable Investors/Partners**: Greylock, QED Investors, Bain Capital Ventures, VMG Partners, Courtside Ventures.
- **Growth Signals**: Serving **100+ brands**; headcount of **74** (+14.9% YoY); recent product launches (Pierre AI, Commerce Brain, Heatmaps); active hiring with 5 open roles as of mid‑2025; presence in the US, India, and Brazil.

## Competitive Advantages
- First‑mover in the “AI‑native commerce” category, consolidating multiple tools into one agentic platform.
- Proprietary **Commerce Brain** – a behavioral graph built on real shopper signals that improves with every interaction.
- Closed‑loop system that goes from detection to automated generation, keeping humans in the loop only for big decisions.
- SOC 2 Type II audited annually, GDPR and CCPA compliant – enterprise‑grade security and privacy.
- Strong integrations and partnerships with leading retail brands; board member support from Bain Capital, Greylock, and VMG.

## Strategic Focus
- Scaling the team across **AI/ML, enterprise sales, and agency strategy**.
- Investing in infrastructure to expand the behavioral graph to support both human and agentic shoppers.
- Doubling down on **agent‑led experimentation** and **full‑funnel personalisation**.
- Growing the customer base further into iconic consumer brands and expanding geographic presence (India, Brazil).

## Why Work Here
- **Culture**: High agency, ownership, direct feedback, learning in public, and staying close to customers. The team is still small enough for individuals to shape the trajectory.
- **Work style**: Fast‑paced, technical, and close to the customer – engineers and product people spend time directly with customer problems.
- **Remote/Hybrid**: Remote roles are available (e.g., Senior Software Engineer, Product Designer), with an office in Austin, TX. Some roles are location‑specific (e.g., Enterprise Account Executive in Austin).
- **Perks** (from careers page): Competitive salary, comprehensive medical/dental/vision, 401(k) with match, unlimited PTO, paid parental leave, fertility benefits, wellness stipend, daily catered lunches, monthly social outings, bi‑annual company retreats.
- **Growth**: Opportunity to define a new category (agentic commerce) and work on products that touch millions of shopping sessions for major brands.

## Sources
1. [fermatcommerce.com](https://www.fermatcommerce.com/)
2. [fermatcommerce.com/careers](https://www.fermatcommerce.com/careers)
3. [fermatcommerce.com/about](https://www.fermatcommerce.com/about)
4. [linkedin.com](https://www.linkedin.com/company/fermat-commerce)
5. [fermatcommerce.com/news](https://www.fermatcommerce.com/news/announcing-our-series-b-defining-the-next-era-of-commerce-with-ai)

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