Senior Python Developer (Fintech)

REMOTE GLOBAL

We’re looking for an experienced Senior Python Developer to join a high-load fintech product focused on card infrastructure, transactions, and integrations with financial and blockchain services. This role is ideal for someone who can design robust backend systems, work with real-money flows, and take ownership of complex engineering decisions in a low-bureaucracy environment.

About the Role:

You will be working on a fintech platform that includes card issuing infrastructure, transaction processing, webhooks, and integrations with external providers such as payment gateways, banks, and KYC/AML services. The system operates under high load with strict requirements for reliability and data consistency, including basic on-chain integrations.

Key Responsibilities:

Develop and scale backend services using Python and Django
Design system architecture for high-load and transactional environments
Integrate with external providers (payment gateways, banks, KYC/AML services, card processors)
Implement and maintain webhook systems (handling, idempotency, retries)
Participate in designing payment and accounting systems
Work with basic blockchain/on-chain integrations
Optimize system performance and reliability
Conduct code reviews and contribute to engineering standards

Key Qualifications:

5+ years of commercial experience with Python
Strong experience with Django (DRF, ORM, middleware, signals)
Background in fintech or transactional systems
Solid understanding of: transaction lifecycle, data consistency (ACID, eventual consistency), idempotency
Experience integrating external APIs (REST, webhooks)
Deep knowledge of PostgreSQL (indexes, transactions, locks, query optimization)
Experience with Redis (caching, queues, rate limiting)
Understanding of system architectures (monolith vs microservices, event-driven systems)
Experience in system design, not just implementation
Ability to design solutions independently, not just implement tasks
System-level thinking beyond individual features
Ownership mindset focused on outcomes, not just task completion
Experience working with products involving real money and risk
Ability to challenge requirements and ask the right questions
Skill in simplifying complex systems

Nice to Have:

Experience with card products (issuing, acquiring)
Experience working with payment providers
Basic understanding of Web3 (wallets, transactions, blockchain APIs)
Experience with message queues (Kafka, RabbitMQ)
Docker / Kubernetes experience
Experience with high-load systems
Experience building billing or ledger systems
Understanding of antifraud and risk systems
Experience with event sourcing
Participation in building platform-level solutions

Benefits:

Complex engineering challenges in fintech
High impact on system architecture decisions
Minimal bureaucracy, maximum ownership
Work with real transactions and high-load systems

Senior Python Developer (Fintech)

CONTACTS

https://t.me/hr_createit