Fullstack Engineer (Python)

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: Flexible remote work: Work from anywhere with a schedule that fits your life. Our core team operates in Europe, and we welcome candidates worldwide using Deel.com . High ownership and real impact: Engineers actively influence product and technical decisions, not just implementation details. Fast-moving startup environment: We value speed, autonomy, and practical problem-solving over rigid corporate processes. Direct communication: We keep things simple and transparent, ensuring you focus on what matters most — getting things done. Professional Support: We provide a monthly budget that you can allocate based on your personal and professional priorities — including language learning, professional development, mental health support, sports, or health insurance.