Database administrator

About Telna

Telna provides Mobile Network Operators (MNOs), Communication Service Providers (CSPs), and Original Equipment Manufacturers (OEMs) with a fully managed global cellular connectivity platform. With access to the largest 2 G–5 G and LTE-M coverage from over 800 radio network operators—300 of which are direct partners—across 200 countries, Telna empowers seamless, high-performance connectivity worldwide.

Our global multi-network connectivity platform simplifies integration, offering localized break-out capabilities via cloud infrastructure. With a single integration into Telna's platform, millions of devices are powered by resilient, multi-network connectivity—enabling a wide array of innovative cloud-based solutions.

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Position Overview

Telna is seeking a skilled and experienced Database Administrator (DBA) to join our team. In this role, you will be responsible for the end-to-end lifecycle management of our heterogeneous database environment — spanning relational, document, wide-column, search, and in-memory data stores. You will play a pivotal role in ensuring the reliability, performance, and security of mission-critical systems that support millions of telecom subscribers.

Beyond day-to-day operations, you will act as a trusted technical advisor to our software engineering teams, guiding schema design decisions that maximize query efficiency, scalability, and long-term maintainability across our data platforms.

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Key Responsibilities

Installation & Configuration

Install, configure and upgrade database systems across all supported platforms (Mongo DB, Scylla DB, Apache Solr, and others). Setup and manage database clusters, replication topologies, and high-availability configurations appropriate to each platform. Define and enforce standardized installation procedures, naming conventions, and configuration baselines. Configure authentication, authorization, and role-based access control (RBAC) across all database instances.

Maintenance & Operations

Monitor database health, performance metrics, capacity utilization, and availability using dedicated observability tooling. Apply patches, version upgrades, and security fixes in line with change management policies and maintenance windows. Implement, test, and maintain backup and disaster recovery (DR) strategies to meet defined RPO/RTO SLAs. Manage database storage allocation, index maintenance, and compaction/defragmentation routines. Investigate and resolve incidents including performance degradation, replication lag, node failures, and data inconsistencies. Maintain detailed runbooks and operational documentation for all managed database platforms.

Performance Tuning & Optimization

Continuously profile and tune database performance — including query plans, index strategies, memory settings, and I/O throughput. Identify and resolve slow queries, hot partitions, and resource contention issues. Design and implement caching layers and eviction policies in Redis to optimize application response times. Tune Solr core configurations, analyzers, and query handlers to maximize search relevance and throughput.

Developer Consulting & Schema Advisory

Partner with software engineering and architecture teams during system design and sprint planning to provide expert guidance on data modeling and schema design. Advise on optimal data structures, collection/table/keyspace design, and access patterns for each database technology. Conduct formal design reviews and provide written recommendations before new schemas are deployed to production. Develop and maintain internal best-practice documentation, guidelines, and schema templates for each platform.

Security & Compliance

Enforce data security policies including encryption at rest and in transit, auditing, and access logging. Perform periodic access reviews and revoke unnecessary privileges in accordance with the principle of least privilege. Ensure compliance with relevant data protection regulations (e.g., GDPR, local telecom data regulations) and internal security standards. Participate in security audits and remediate identified vulnerabilities in a timely manner.

Required Qualifications

Bachelor's degree in Computer Science, Information Technology, or a related technical discipline (or equivalent practical experience). 5+ years of professional experience as a Database Administrator or Database Engineer in a production environment. Hands-on expertise with Mongo DB — including replica sets, sharding, aggregation framework, and index management. Hands-on expertise with Scylla DB or Apache Cassandra — including CQL, compaction strategies, and partition design. Practical experience with Apache Solr — schema configuration, Solr Cloud, and query optimization. Practical experience with Redis — cluster mode, persistence (RDB/AOF), Pub/Sub, and data structure best practices. Knowledge of SQL databases such as Maria DB, My SQL, Postgre SQL, and Galera-based clusters — including replication, high-availability configurations, and query optimization. Solid understanding of Linux/Unix systems administration and shell scripting (Bash/Python). Experience with monitoring and observability platforms (e.g., Prometheus, Grafana, Datadog, or equivalent). Strong analytical and troubleshooting skills with the ability to diagnose complex performance and reliability issues. Excellent communication skills with the ability to translate complex technical concepts for developer audiences.

Preferred Qualifications

Experience in a telecommunications or large-scale, high-throughput data environment. Familiarity with cloud-managed database services (AWS, GCP, or Azure). Knowledge of containerization and orchestration tools (Docker, Kubernetes, Helm). Experience with Infrastructure as Code tools (Terraform, Ansible) for database provisioning. Relevant certifications: Mongo DB Certified DBA, Data Stax (Cassandra/Scylla) Certification, or equivalent. Exposure to streaming and event-driven architectures (Apache Kafka, Pulsar) and their interaction with database systems. Understanding of CI/CD pipelines and Dev Ops practices as they relate to database change management.

Why Join Us

Contribute to the advancement of cutting-edge telecom technologies and infrastructure. Collaborate with a diverse, experienced, and multicultural team of engineers and industry professionals. Enjoy a flexible work environment with remote work options. Receive a competitive salary and a comprehensive benefits package. Grow your career through professional development opportunities and technical training.