FunnelFox is a no-code platform that helps app developers grow revenue through web2app funnels. Launched two years ago, it’s already showing impressive growth. Marketers and product managers can build, launch, and optimize funnels in hours instead of months, all without writing a single line of code.

We are looking for a Senior Fullstack/Backend Engineer (Python) to join our Billing team.

The team owns one of FunnelFox’s most strategic products: a core part of our payments ecosystem and a key driver of the company’s growth. With product-market fit established, the team is now focused on scaling the platform, expanding its functionality, and building the best billing solution for the Web2App market.

In this role, you will:

Build and evolve core Billing functionality
Develop reliable and scalable backend systems for billing and payment flows
Improve platform reliability, observability, and operational resilience
Build monitoring and alerting and contribute to incident investigation
Work closely with Product and engineering to deliver features that impact customer value and revenue





You will be a great fit, if you have:

Strong backend engineering experience with Python
Good understanding of distributed systems and backend scalability challenges
Experience with PostgreSQL
Working knowledge of Docker and Kubernetes
Experience working in startup or fast-changing environments
Ability to work autonomously and navigate partially defined requirements
Strong ownership mindset and pragmatic engineering judgment
Ability to communicate clearly and collaborate cross-functionally

Nice to have:

Experience with payment systems or billing infrastructure
Experience with observability, monitoring, or incident handling
Experience working on B2B SaaS or high-load transactional products
Interest in product thinking and business impact, not only implementation

What you may expect from working with us:

Adaptable remote work: Work from anywhere with a schedule that fits your life. Our

📌 Fullstack Engineer (España)
🏢 FunnelFox
📍 España