Software Development Engineer II

We use LLMs to embed AI capabilities into Fulfil's ERP: natural language interfaces, intelligent automation, and merchant-facing insights. The Fulfil x MCP integration with Claude is a good example of the direction we're heading. We're not an ML research company. We don't train custom models or build novel architectures. The work is about integrating and productizing AI to solve real commerce problems.

We also expect engineers to be AI-native in their own workflow: using AI tools to move faster while maintaining strong review discipline, security awareness, and ownership of the final code.

3 to 5 years of Python engineering experience building production systems

Proven experience owning web applications end to end - not just backend services, but the full product surface, including UI and API contracts

You have primarily built user-facing web applications or product workflows, not only internal tools, ETL pipelines, infrastructure, or isolated backend services

Solid fundamentals with ORMs (SQLAlchemy or Django ORM), PostgreSQL, and relational data modelling

Experience with distributed systems: Celery, Redis, RabbitMQ, or similar background processing tools

Comfortable writing automated tests with pytest and working collaboratively in Git

A track record of seeing projects through from design to deployment to ongoing support. Not just closing tickets

You have worked in environments where engineers are expected to clarify the problem, make tradeoffs, and ship without heavy product or project management layers.

Domain experience in commerce, logistics, or fintech, order management, inventory, payments, reconciliation

Hands-on LLM integration in production features, not just personal projects

Familiarity with Google Cloud, Heroku, or similar platforms

Fulfil is bootstrapped, profitable, and growing. No VC-driven bloat, no alignment meetings about alignment meetings. Everyone ships every day.

Real ownership over problems that matter

Direct access to decision-makers

The satisfaction of seeing your code run in production for brands doing $10M–$100M in revenue

Unlimited PTO, we actually want you to use

You’ll thrive here if you value direct, specific feedback, are comfortable discussing tradeoffs openly in Slack and code reviews, and can separate critique of the work from critique of the person.

This is not a clock-in, clock-out engineering environment. Most weeks should be sustainable, but when merchant-impacting issues arise, we expect engineers to stay engaged, communicate clearly, and help drive the issue to resolution.

Fulfil is the modern ERP for commerce. Built to power the fastest-growing eCommerce brands, our platform brings together order management, inventory, accounting, and more, turning complex operations into a strategic advantage.

We’re trusted by brands like HexClad, Ridge Wallet, Caraway, and Resident, and backed by people who want to change the way merchant operations are run. We believe in deep work, radical accountability, and building tools that let sharp people move faster.