Lead Python+Go Developer (Backend)

Astra Group

Job description

REST API and CLI for managing resources and clusters. Asynchronous execution of backup and recovery operations through distributed agents.

Tantor XData is an enterprise-grade hardware-software complex (HSC) from the company "Tantor Labs" (part of the "Astra Group"). Its key idea is to combine hardware power and software logic into a single optimized complex for working with databases. The solution is designed for high-load systems where processing speed, fault tolerance, and scalability are critical.

An open vacancy has been announced in the XData Development Department:

Senior+ Go/Python Developer (Backend)

About the project We are developing the Backman platform – a managed service for automated backup and recovery of TantorDB.

The key task of the system is to ensure reliable management of the lifecycle of PostgreSQL cluster backups in a multi-tenant environment. The platform performs control-plane functions: it manages resource states, schedules asynchronous backup operations, and provides secure access to storage, abstracting the complexity of infrastructure operations and providing a unified API for working with clusters.

The project is implemented in Python with the prospect of transitioning to a Go stack.

The system focuses on automating data management processes and ensures:

• REST API and CLI for managing resources and clusters;
• Asynchronous execution of backup and recovery operations through distributed agents;
• High availability and fault tolerance of the control plane using PostgreSQL as the primary storage;
• Security at the API and infrastructure level (JWT, TLS/mTLS, RBAC, SigV4 validation);
• S3-compatible storage for long-term backup storage through a proxy service.

Key Responsibilities

• Design and development of control-plane components of the platform in Python/Go: API endpoints, state management services, asynchronous operation schedulers.
• Development and support of agents for automating the lifecycle of PostgreSQL cluster backups:
  • initiation and configuration of WAL archiving;
  • management of full/incremental/differential backups with WAL-G support;
  • data recovery (point-in-time recovery);
  • real-time monitoring of operation status.
• Implementation of resource orchestration mechanisms, considering multi-tenancy, namespace isolation, and RBAC access rights.
• Integration of monitoring and logging (OpenTelemetry, Prometheus, Grafana) for platform operation control.
• Development and support of an S3 proxy service for validating SigV4 signatures and secure access to object storage.
• Participation in architectural discussions, analysis of trade-offs, and technical decisions affecting the reliability and evolution of the backup system.
• Interaction with database development and DevOps teams for platform integration with infrastructure components.
• Conducting code reviews and participating in the formation of team engineering standards.

Requirements

• Solid commercial experience in Python and Go development.
• Ability to write maintainable, readable, and structured code, adhering to clean design principles and Python/Go idioms.
• Experience in developing long-running services and control-plane components (scheduler orchestration, job management).
• Understanding of PostgreSQL as a managed service:
  • replication (Patroni);
  • WAL archiving and point-in-time recovery;
  • backup and recovery (WAL-G, pg_basebackup).
• Experience with cloud storage and S3-compatible APIs (MinIO, AWS S3, Cygnustech).
• Experience with CI/CD pipelines and Docker.
• Experience integrating monitoring and logging (OpenTelemetry, Prometheus, Grafana, or similar).
• Understanding of basic principles of network isolation, secure data transmission, and authentication in distributed systems.
• Ability to independently tackle complex engineering tasks and make technically sound decisions regarding the reliability of the backup system.
• Knowledge of Python and Go – for supporting and migrating the existing solution.

Desirable (will be a plus):

• Practical experience developing Kubernetes operators or similar control-plane components for database orchestration.
• Experience with the Controller-Operator pattern and CRDs in the context of backup automation.
• Understanding of WAL (Write-Ahead Log) principles and replication mechanisms in PostgreSQL.
• Experience integrating multi-tenant systems with RBAC and namespace-based data isolation.
• Experience with distributed file systems (Ceph, GlusterFS, MinIO, and similar).
• Experience with Infrastructure as Code configuration management tools.
• Practical experience in operating or automating PostgreSQL (Patroni, pgBouncer, Pgpool-II).
• General understanding of DevOps approaches and the lifecycle of database infrastructure platforms.
• Understanding of the compute-storage separation principle.

What's important to understand about the role

• This is a Senior+ position with a focus on Go and system engineering of distributed services.
• PostgreSQL, WAL-G, S3 storage, and security are applied domains; the depth of immersion is determined by the task of ensuring backup reliability.
• The role involves active participation in the architectural development of the backup management platform, including stack selection.

Conditions:

• Confidence in the future. We honor the Labor Code of the Russian Federation: we have stable and transparent "white" income.
• Health care. We provide a voluntary medical insurance policy (with dental care).
• Sport is our thing. Many of us enjoy snowboarding, skiing, diving, running, etc. – it's not difficult to find someone for after-work activities. We sponsor football and volleyball teams, support esports initiatives, and hold table football tournaments.
• Competitive salary, discussed with the successful candidate.
• Work mode of your choice: remote, hybrid, or office in Moscow.