Senior Backend Python Engineer — Remote Fintech Scale-Up

Payabl; Warszawa; Hybrid; PLN 250,000 - 400,000; Full time

Benefits offered by this job

Provident Fund

Learning Budget

Wolt allowance

SportsBenefits

Company car

Employee parking

Vacation days

Discount program

Greek language classes

Global events

Job summary

Payabl is seeking a Senior Backend Engineer to design and implement scalable Python microservices in a distributed architecture. You will work on high-performance backend systems, integrating third-party APIs and leveraging AWS Lambda within a remote-first, Poland-based remote setup or Cyprus onsite arrangement.

The role emphasizes performance, scalability, and collaboration with cross-functional teams, including DevOps for CI/CD improvements and code reviews.

Qualifications

• 5+ years of backend engineering experience with strong Python expertise.
• Proven experience building and scaling microservices architectures.
• Strong knowledge of FastAPI or Django.
• Experience working with AWS (including services such as Lambda).
• Strong experience with Docker and containerization.
• Experience with CI/CD pipelines (GitLab preferred).
• Strong understanding of distributed systems and high-load environments.
• Experience designing and optimizing systems for performance and scalability.
• Solid experience integrating third-party APIs.
• Strong problem-solving and analytical skills.
• Excellent communication skills and ability to work in a remote-first environment.
• Experience in fintech, payments, or financial platforms.
• Experience with high-throughput systems (e.g. trading, payments, real-time processing).
• Familiarity with event-driven architecture (Kafka, messaging systems).
• Experience mentoring or supporting other engineers.

Responsibilities

• Design and implement scalable Python microservices in a distributed architecture.
• Build and optimize high-performance backend systems, ensuring scalability and reliability under high load.
• Integrate and manage third-party APIs and external services.
• Collaborate with cross-functional teams to define technical solutions and system design approaches.
• Work with AWS services (e.g. Lambda, cloud infrastructure) to architect and deploy solutions.
• Improve and maintain CI/CD pipelines and deployment processes in collaboration with DevOps.
• Lead and contribute to code reviews, ensuring high engineering standards.
• Identify system bottlenecks and drive performance and scalability improvements.
• Troubleshoot complex production issues in distributed systems.
• Contribute to technical discussions and guide best practices within the team.

Skills

Python

Microservices

FastAPI or Django

Distributed systems

High-load environments

Third-party APIs

Problem solving

Remote communication

Fintech/payments domain

High-throughput systems

Event-driven architecture (Kafka)

Mentoring

Tools

AWS Lambda

Docker

GitLab CI/CD

Job description

Payabl is seeking a Senior Backend Engineer to design and implement scalable Python microservices in a distributed architecture. You will work on high-performance backend systems, integrating third-party APIs and leveraging AWS Lambda within a remote-first, Poland-based remote setup or Cyprus onsite arrangement.

The role emphasizes performance, scalability, and collaboration with cross-functional teams, including DevOps for CI/CD improvements and code reviews.