🌍 We’re Hiring: Senior Data Scientist (mathematical statistics focus)

📍 Location: Remote

💡 About Us

Yesim is an international product IT company operating in the fast-growing global eSIM and digital connectivity market. We are building a scalable, data-driven business with a clear focus on long-term value creation.

If you are excited by complex datasets, behavioral patterns, forecasting systems, and building analytical infrastructure from the ground up — this opportunity is built for you.

✨ About the Role

We are looking for a Mid/Senior in-house DevOps Engineer to take full ownership of our infrastructure, developer environments, and CI/CD pipelines. You will work closely with the CTO, CDO and Backend/Frontend Tech Leads, participate in architectural decisions, and establish technical standards from the ground up.

📝 Responsibilities

Data Analysis & Pattern Discovery

• Maintain and evolve AWS and Hetzner infrastructure: server provisioning, network rules, resource monitoring
• Manage SSH tunnels and port-forwarding daemons for secure database access and log retrieval across environments
• Build and maintain CI/CD pipelines (GitHub Actions / GitLab CI) for backend, frontend, and VoIP services
• Design and operate database backup systems (MySQL, ClickHouse) on Hetzner: scheduling, rotation, and integrity verification
• Deploy and maintain staging environments on Hetzner using Docker: multi-stack isolation, production schema replication
• Create and maintain a unified Docker-based local development environment for the entire backend team
• Expand SLA monitoring: build dashboards and alerts tailored to different stakeholder groups (developers, customers, management)
• Write and maintain infrastructure documentation, runbooks, and recovery procedures
• Contribute to ISO 27001 readiness: access control, server access management, DDoS mitigation

📩 Requirements

• 3+ years of experience as a DevOps / Infrastructure Engineer

• Strong Linux skills (Debian/Ubuntu): bash scripting, systemd, cron, user management

• Solid knowledge of Nginx, SSL/TLS, Let's Encrypt configuration

• Hands-on Docker and Docker Compose: Dockerfile authoring, compose stacks, networking, volumes

• Practical AWS experience: EC2, S3, VPC, Security Groups, IAM, CloudWatch

• Hetzner experience: dedicated servers or Cloud VPS, setup from scratch

• SSH tunnel management: port forwarding, reverse tunnels, key management

• CI/CD pipeline experience: GitHub Actions or GitLab CI

• Backup and recovery: mysqldump / ClickHouse backup, verification, rotation

• Monitoring and alerting: Prometheus, Grafana, Alertmanager or equivalents

• Technical English: able to read documentation independently

Nice to Have

• Experience with ClickHouse or other columnar databases

• Familiarity with PHP/Laravel stack (for effective team collaboration)

• Basic Python or Ansible for automation

• Understanding of ISO 27001 or SOC 2 requirements

• Background in telecom or SaaS environments

🌍 Languages

• Russian - С2

• English - B2 or higher

🎁 What We Offer

• Full infrastructure ownership from day one – minimal bureaucracy

• Direct collaboration with CTO, CDO and Backend/Frontend Tech Leads

• Opportunity to build processes from scratch: environments, standards, monitoring

• Involvement in strategic projects: ISO 27001, infrastructure scaling

• Competitive compensation, discussed individually

• Fully remote format — work from anywhere with flexible structure

• Global product environment — operate in an international, fast-scaling tech company

• Dynamic growth stage — high responsibility, fast decisions, no corporate bureaucracy

If you’re ready to design predictive systems, uncover deep behavioral patterns, and influence high-level business decisions — we’d love to hear from you.