Role Overview

We are seeking a Senior Backend Developer with deep expertise in FastAPI and modern backend architecture to join our high-impact engineering team.
You will design and implement highly scalable APIs, optimize system performance, and ensure secure integrations with financial services and third-party systems. This role demands both hands-on technical leadership and a strategic systems mindset.

This is a key role in our growing fintech platform — where quality, reliability, and precision truly matter.

Key Responsibilities

• Design, develop, and maintain scalable microservices using FastAPI and Python 3.10+.
  
  

• Implement and integrate authentication and authorization flows using Keycloak (OpenID Connect, OAuth2).
  
  

• Develop event-driven systems leveraging Apache Kafka as the messaging backbone.
  
  

• Optimize APIs for high performance and reliability in financial transaction environments.
  
  

• Design and maintain CI/CD pipelines using Docker, Kubernetes, and modern DevOps tools.
  
  

• Collaborate closely with product managers, frontend engineers, and data teams to deliver seamless fintech experiences.
  
  

• Ensure security, observability, and fault tolerance across all backend services.
  
  

• Mentor junior developers and contribute to engineering best practices.

Must-Have Qualifications

• 5+ years of professional backend development experience.
  
  

• Strong proficiency in Python and FastAPI framework.
  
  

• Solid understanding of microservices architecture, RESTful APIs, and asynchronous programming (asyncio).
  
  

• Proven experience with Keycloak or other IAM solutions.
  
  

• Experience with Kafka, Redis, and PostgreSQL in production-grade systems.
  
  

• Hands-on experience in containerization (Docker) and orchestration (Kubernetes).
  
  

• Familiarity with CI/CD tools (GitLab CI, Jenkins, or GitHub Actions).
  
  

• Strong understanding of software security, monitoring, and API scalability.
  
  

• Excellent problem-solving and debugging skills.
  
  

• Strong communication and collaboration mindset.

Good to Have

• Experience in Fintech, Banking, or Payment Systems.
  
  

• Familiarity with DDD, CQRS, or Hexagonal Architecture.
  
  

• Experience with async message-driven architectures.
  
  

• Knowledge of Cloud Platforms (AWS, GCP, or Azure).
  
  

• Familiarity with Prometheus / Grafana for observability.
  
  

• Contributions to open-source projects or tech communities.

What We Offer

• Opportunity to shape the future of digital finance in Iran.
  
  

• Dynamic, mission-driven environment backed by Charisma Holding.
  
  

• Competitive compensation and benefits package.
  
  

• Continuous learning, professional growth, and collaboration with top-tier engineers.