Job Details

Senior Python Developer (Django) for a fintech crypto-neobank. Remote position focusing on building transaction systems. Requires 5+ years of Python experience and strong Django skills.

We are building a fintech product with card infrastructure: transactions, webhooks, integrations with providers, working with external accounts and on-chain services. We are looking for a Senior Python Developer (Django) who can not only write code but also design reliable backend systems for transaction processing. Responsibilities: • Development and enhancement of backend services in Python (Django) • System architecture design for high load and transactional models • Integration with external providers: card processing, payment gateways, KYC/AML services, banking APIs • Working with webhooks (receiving, processing, idempotency, retries) • Participation in the design of payment and accounting systems • Working with on-chain integrations (basic level) • Performance and system stability optimization • Participation in code reviews and formation of engineering standards

• 5+ years of commercial experience with Python • Confident experience with Django (DRF, ORM, middleware, signals) • Experience in fintech or with transactional systems • Understanding of: transaction lifecycle, data consistency (ACID, eventual consistency), operation idempotency • Experience with external API integrations (REST, webhooks) • Deep knowledge of PostgreSQL: indexes, transactions, locks, query optimization • Experience with Redis (cache, queues, rate limiting) • Understanding of architectures: monolith vs microservices, event-driven approach • System design experience (not just coding) Desirable: • Experience with card products (issuing, acquiring) • Experience with payment providers • Basic understanding of Web3: wallets, transactions, blockchain interaction via API • Experience with message queues (Kafka / RabbitMQ) • Docker / Kubernetes • Highload systems experience Will be a plus: • Experience in building billing or ledger systems • Understanding of antifraud and risk systems • Experience with event sourcing • Participation in building platform solutions