Hot vacancy

[Closed] Senior Backend Developer

Remote Qubit Labs

As a Senior Backend Developer, you’ll be instrumental in building and scaling their get-paid-to platform from the ground up. You’ll work with cutting-edge technologies, design and implement critical backend services, and help shape their technical architecture. This remote position offers significant autonomy and the opportunity to make a direct impact on their platform’s success.

Requirements

  • At least 6 years of professional experience with Python and web framework development (FastAPI, Django, or Flask)
  • Strong understanding of RESTful APIs and gRPC implementation
  • Proficient in working with PostgreSQL and Redis, including database design and optimization
  • Experience with message brokers (RabbitMQ/Kafka) and distributed systems
  • Strong knowledge of Docker containerization and microservices architecture
  • Hands-on experience with AWS services (EC2, S3, RDS, Lambda)
  • Proficiency in working with SQLAlchemy and database migration tools
  • Experience with distributed tracing and monitoring using OpenTelemetry
  • Strong understanding of API security, authentication, and authorization mechanisms

A big advantage:

  • Familiarity with infrastructure as code (Terraform, CloudFormation)
  • Knowledge of Kubernetes and container orchestration
  • Experience with real-time data processing and streaming architectures
  • Familiarity with CI/CD pipelines (GitHub Actions, CircleCI)
  • Experience with load testing and performance optimization tools

Skills:

  • Passion for backend development and building scalable, high-performance systems
  • Strong expertise in modern backend technologies and cloud architecture
  • Proven experience working in a Scrum development environment
  • Demonstrated ability to design and implement complex distributed systems
  • Strong problem-solving skills and attention to detail
  • Experience mentoring junior developers and contributing to technical decisions
  • Excellent communication skills for cross-functional team collaboration

Key Responsibilities:

  • Design and develop scalable backend services using Python and FastAPI
  • Implement and optimize database schemas and queries
  • Build and maintain microservices architecture
  • Ensure high performance and reliability of our distributed systems
  • Collaborate with frontend developers to integrate APIs and services
  • Contribute to technical decision-making and architectural planning
  • Implement monitoring, logging, and observability solutions
  • Participate in code reviews and mentor other team members

What we offer:

  • Remote-first model of work;
  • Cooperation under the FOP model/B2B contract;
  • Paid vacation (18 working days per year);
  • Paid sick leaves (10 working days per year);
  • English-speaking clubs.

Stack:

AI Backend Developer DID Hedera Nest.js Node.js PostgreSQL Rust Smart Contract Solidity W3C

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