Software Engineer, Core Product

FERMÀT is the AI native commerce platform that optimizes shopping experiences, leading to best-in-class shopper engagement and conversion. We help brands transform clicks into conversions with dynamic, personalized shopping experiences—built and optimized in minutes.

Backed by VMG, Bain Capital Ventures, Greylock, QED, and named The Information’s #1 commerce startup, we’re a 70+ person team based in SF, Austin, NYC, and Bangalore. As a fast-growing Series B company, we’re building the infrastructure for the future of online retail—and we’re just getting started.

About the Role :

We’re looking for a Full Stack Engineer to join our team building FERMÀT’s enterprise product offerings. You’ll work across our tech stack to :

Build scalable features that handle millions of shoppers and thousands of merchants

Create intuitive UX that makes complex commerce workflows feel simple

Work with AI to help personalize shopping experiences at scale

This role offers significant growth potential - you’ll work alongside senior engineers who are invested in your development while taking on meaningful ownership of features that directly impact customers. You’ll be in our San Francisco office collaborating with a talented team that values learning, experimentation, and shipping quality code.

What You’ll Do :

Build and ship full-stack features for our enterprise product lines

Write clean, tested code across our platform - from frontend components to backend services

Collaborate with product and design to understand requirements and propose solutions

Participate in code reviews and learn from feedback to continuously improve your craft

Work with customer-facing teams to understand user needs and iterate on solutions

Help maintain and improve our existing codebase and infrastructure

What You’re Looking For in Your Next Role :

Opportunity to level up your skills working with experienced engineers on challenging problems

Meaningful ownership where your work directly impacts customers

Fast-paced environment where you can ship code frequently and see real results

Team that invests in your growth through mentorship, feedback, and increasing responsibility

What We’re Looking For

Must Have :

2-4 years of professional software engineering experience

Solid foundation in at least one backend language (Go, Python, Node.js, or similar)

Experience building web applications with modern frontend frameworks (React, Vue, Angular)

Understanding of API design and RESTful services

Familiarity with relational databases and SQL

Strong problem-solving skills and attention to code quality

Excitement about learning new technologies and taking on challenges outside your comfort zone

Collaborative mindset—you work well with others and communicate clearly

Nice to Have :

Experience with TypeScript or Go

Exposure to distributed systems or microservices architecture

Background in eCommerce, payments, or adtech

Contributions to open source projects or personal projects you’re proud of

Our Tech Stack : Golang

• TypeScript
• React
• Next.js
• PostgreSQL
• Google Cloud

Don’t worry if you haven’t used all of these — we’ll help you ramp up on our stack. What matters most is your ability to learn quickly and write quality code.

A Typical Week :

You’ll spend most of your time coding - building features, fixing bugs, and improving existing code. You’ll participate in daily standups, collaborate with your team on design decisions, and pair program with senior engineers who can help you grow. You’ll ship code multiple times per week and see your work go live to real customers quickly.

What You’ll Learn & How You’ll Grow :

Technical depth : Work on distributed systems, high-scale infrastructure, and AI-powered features

Full-stack breadth : Gain experience across our entire stack from database to UI

Product thinking : Learn how to balance technical decisions with customer needs

Mentorship : Regular 1 : 1s with senior engineers focused on your growth and career development

We’re committed to helping you grow into a senior engineer. You’ll get regular feedback, increasing ownership of complex features, and opportunities to lead technical decisions.

Benefits

Competitive salary + equity package

Comprehensive health, dental, and vision insurance for you and all your dependents.

Retirement benefits :

US : 401(k) plan with 4% matching

India : Provident Fund with 12% matching

4 months of paid parental leave

Unlimited PTO policy (with minimum 5 days PTO / quarter!)

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