Senior Python Developer (Freelance)

Quick Facts

• Role: (Senior) Python Developer — Freelance B2B

• Work model: 100% remote (EU-based)

• Engagement: Full-time, long-term (initial 3 months for Fintech; 11 months for Risk Decisioning with possible extension)

• Start: January (Fintech Integrations); ASAP (Risk Decisioning)

Description

Freelance Python developer roles for two remote EU-based projects: a Fintech Integrations project and a Risk Decisioning platform. You’ll build and maintain production services and integrations, including decision/rule capabilities and API-driven workflows, while collaborating with an international cross-functional team.

Responsibilities

• Build a risk decisioning platform (rule engine, experiments, decision APIs) and new risk products (e.g., risk-based pricing)

• Integrate with third-party providers such as credit bureaus and ID/fraud/AML vendors (Fintech project) or trading venues, tax providers, and custodians (Risk Decisioning project)

• Develop Kafka event-driven flows resilient to retries, duplicates, and race conditions

• Create tools for risk analysts, including an LLM risk assistant

• Support service reliability with monitoring (Datadog/Prometheus), on-call practices, and runbooks

• Provide end-to-end ownership and shape solutions (Risk Decisioning project)

Requirements

• Strong senior-level Python skills with a track record of shipping production systems

• Good spoken and written English for a cross-functional, international team

• Relevant commercial experience for one of the project tracks

  • Fintech Integrations: Python, FastAPI, PostgreSQL, AWS, GraphQL/REST APIs, Kafka-based event flows, reliability practices with monitoring

  • Risk Decisioning: Python, FastAPI, PostgreSQL, AWS, Docker, Kubernetes, Terraform; end-to-end ownership; reliable third-party integrations (financial/regulatory experience is a plus)

Benefits

• 100% remote and flexible work

• Work with experienced developers and develop hard and soft skills continuously

• Dev-friendly processes: Continuous Integration, Continuous Delivery, code review, and bug bashes

• Long-term collaboration on challenging products across FinTech, B2B software, and E-commerce