Senior Software Engineer

Position Overview

We are looking for a Senior Backend Developer with extensive experience in building scalable microservices architectures. You ll be part of an innovative team developing and operating a global communication platform.

• Responsibilities

Develop and maintain backend services in Python with a focus on performance and scalability

Design and implement microservices for a high-frequency communication platform

Work closely with Dev Ops and Operations teams to ensure reliable infrastructure

Handle complex requirements: emails, SMS, voice calls, video conferencing in a distributed architecture

Maintain and evolve Python legacy code

Actively shape the technological future by evaluating new tools and integrating AI technologies

Must-Have

• Several years of experience as a Backend Developer with Python
• Strong expertise in FastAPI and asynchronous programming (async/await)
• Solid understanding of microservices architecture and REST APIs
• Experience with at least one of the following databases:
  Mongo
  
  DB or Maria
  
  DB/MySQL
• Proficiency in Authentication & Authorization (OAuth2, JWT)
• Docker experience for containerization
• Version control with Git (preferably Git Lab)
• Fluent English for working in international teams

Highly Desirable

• Experience with Message Brokers (Rabbit
  
  MQ, Kafka)
• Knowledge of Caching Systems (Redis)
• Experience with Kubernetes and container orchestration
• Familiarity with CI/CD pipelines (Git Lab CI)
• Monitoring & Observability tools (Kibana, Sentry, Grafana)
• Web Socket implementation
• Pydantic for data validation

Nice-to-Have

• Experience with Provider APIs (Twilio, Vonage, Sinch, Infobip)
• TTS integration (Azure, Acapela)
• Basic knowledge of Keycloak or other IAM systems
• Frontend basics (Preact, React) for better cross-team collaboration
• Experience with legacy code modernization
• Interest in AI/ML technologies and their practical applications

Core Technologies

Python, FastAPI, Pydantic, Async/Await, Microservices, REST APIs, OAuth2, JWT, Web Sockets

Database & Messaging

Mongo

DB, Maria

DB, Rabbit

MQ, Redis

Dev Ops & Tooling

Docker, Kubernetes, Rancher, Git Lab CI, Kibana, Sentry, Grafana

We are building a unified communication platform for customer-facing interactions. The solution integrates multiple communication channels in a highly scalable architecture:

• Email
• SMS
• Voice Calls
• Conference Calls
• Video Conferencing

The platform processes millions of transactions daily and requires the highest standards of reliability and performance.

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