Senior Python Developer

FunnelFox is the leading platform for mobile apps revenue growth. We help top mobile apps build, launch and optimize high-converting web-to-app funnels - from landing pages and checkout to analytics, payments and retention. Our platform powers millions in subscription revenue for leading apps worldwide by saving on App Store commissions, combining data, design and performance into one seamless solution.

We’re a small, product-minded engineering team that loves building things that look and feel great. Everyone here cares deeply about the experience we create — from how fast something loads to how it feels to use.

We don’t just move tickets; every engineer has a voice, a vision, and real ownership in shaping the product. We collaborate directly with founders and product teams, ship fast, and constantly push to make FunnelFox better - both technically and experientially.

Our Stack:

Python, FastAPI, ClickHouse, PostgreSQL, Redis, Kafka, Docker, and Kubernetes

What you will do

• Develop async processes with asyncio and structure services using Domain-Driven Design.

• Build and maintain integrations with SSO, payment providers, and attribution pipelines.

• Improve reliability and availability for third-party integrations and app store API fetching.

• Set up payment processing and subscription management services.

• Write unit and integration tests to keep quality high.

About you

• You have solid Python 3.8+ skills and write clean, maintainable code.

• You're comfortable with asyncio, FastAPI or aiohttp, PostgreSQL, and SQLAlchemy.

• You understand software security principles and apply them consistently.

• You enjoy chasing bottlenecks and optimizing performance.

• You've worked with payments like Stripe, Adyen, or PayPal (nice to have).

• You're familiar with Docker, Kubernetes, Redis, Prometheus, or Grafana (nice to have).

What’s in it for you

• Strong product with industry-best metrics. FunnelFox is among the top 5% fastest-growing SaaS companies.

• Career growth. Own critical areas, build a team and grow with us.

• Direct communication and ownership. No bureaucracy, no politics – just impact.

• Flexible remote work. Join us from anywhere, and deliver impressive results.

• We work as individual contractors (PTO, public holidays, and sick leave included).

• Benefits. English lessons, sports reimbursements, laptop coverage, and more.