Friendly Technologies

About us
Friendly Technologies builds device management software that telecom operators and ISPs use to manage millions of routers, gateways, and IoT devices (LwM2M, MQTT, OMA-DM, TR-069/TR-369 USP, CoAP, and HTTP protocols). 

About the role
Want to move into QA from system administration or ISP support? This role is for you. You don't need QA experience. We'll teach you testing; you bring strong networking and hands-on hardware skills.

What you'll do

• Test our platform against real network hardware: routers, switches, firewalls, and CPE devices
• Set up and maintain test environments on Linux and Windows servers
• Reproduce, troubleshoot, and document issues reported by customers
• Check protocol behavior (TCP/IP, SNMP, HTTP, and others) with tools such as Wireshark
• Run basic database checks in Oracle and MySQL

• Write clear bug reports and test cases in English, and work closely with developers and support

   

What we're looking for

• English good enough to speak, read, and write technical documentation
• Strong networking fundamentals
• Hands-on experience with routers, switches, firewalls, and similar hardware
• Experience managing, configuring, and troubleshooting Windows and Linux servers
• Understanding of layer 3–7 protocols (TCP/IP, SNMP, etc.)

• Basic knowledge of Oracle and MySQL (simple queries are enough)

   

Nice to have

• Experience as a system administrator or ISP technical support engineer

   

What we value

• You learn on your own and enjoy figuring things out
• You communicate clearly and work well in a team
• You want to grow professionally

• You can occasionally work outside normal hours, e.g., for customer issues in other time zones

   

What we offer

• Training in QA methods and telecom device management protocols
• Work with real carrier-grade equipment and international customers

We are looking for a DevOps engineer to join our company

Basic requirements for the DevOps Engineer:

- 7+ years of experience in DevOps / Platform Engineering / SRE
- 5+ years of hands-on AWS experience in production environments (EC2, VPC, S3, IAM, Route53)
- 3+ years of Terraform experience, including reusable modules, state management, and CI/CD integration
- 3+ years of Ansible experience - playbooks, roles, inventory management for multi-node deployments
- Strong hands-on experience with GitHub Actions CI/CD - workflows, Docker Buildx, automated builds, and deployments
- Proficiency in Bash and Python scripting - bootstrap automation, service auto-detection, idempotent deployment scripts
- Strong Linux administration skills in production (Ubuntu, Debian, CentOS, Rocky Linux)
- Networking, firewalls (iptables/ufw), VPN, SSH hardening, SSL/TLS certificate management
- Hands-on experience with Docker and Docker Compose at an advanced level - host networking, volume management, multi-service stacks, private registries (Harbor)
- Hands-on experience with Kubernetes and AWS EKS in production - Helm, cluster management, service mesh, ingress controllers
- Deep experience with Prometheus - configuration, file_sd_configs, PromQL, alerting rules, retention tuning
- Grafana - dashboard provisioning, datasources, alerting, service accounts, embedding
- Alertmanager - routing, receivers (Email, Telegram, Slack, MS Teams, SNMP, Webhooks)
- Experience with exporters ecosystem - node-exporter, process-exporter, cAdvisor, mysqld-exporter, JMX exporter
- Understanding of JVM metrics (HikariCP, heap, GC) - we monitor WildFly/Java application servers
- Nginx - reverse proxy, SSL termination, basic auth, WebSocket support, IP-based access control
- Database administration: MySQL/MariaDB (setup, user management, monitoring) plus at least one of PostgreSQL, Oracle DB, ClickHouse
- Experience with IAM, secrets management, and infrastructure security best practices
- Experience supporting production systems, incident response, and root cause analysis
- Confident Git skills (branching, tags, hooks, releases)
- Strong communication skills and ability to work across teams
- English level: B2+

Nice to Have

- AWS Certified DevOps Engineer – Professional or AWS Certified Solutions Architect – Associate
- CKA / CKAD
- Experience with Hetzner (Dedicated/Cloud)
- Experience with GitOps tools (Argo CD)
- Experience with AWS Organizations / multi-account environments
- Experience with cost optimization / FinOps
- Experience mentoring engineers and defining engineering standards
- Spring Boot Actuator - understanding Java microservice metrics
- SNMP - traps, MIB files, SNMPv2c/v3
- Hazelcast - cache clusters, native Prometheus endpoint
- Oracle DB - exporter setup, administration
- ELK/OpenSearch for centralized logging
- Cloud-to-cloud migration experience


Responsibilities

- Designing, building, and maintaining software delivery pipelines and infrastructure that support continuous integration, delivery, and deployment
- Building and maintaining Terraform modules and Ansible playbooks for automated product delivery to enterprise clients across AWS, Hetzner, and on-premise environments
- Collaborating with engineering teams to ensure that software is delivered with high quality, speed, and reliability
- Developing and maintaining monitoring and alerting systems (Prometheus, Grafana, Alertmanager, ~20 exporter types) to proactively identify and address issues in production environments
- Troubleshooting production issues, conducting root cause analysis, and implementing remediation plans
- Managing and scaling infrastructure resources - servers, databases, Docker services, EKS/Kubernetes clusters - to ensure optimal performance and cost-effectiveness
- Owning the full monitoring stack: Prometheus, Grafana, Alertmanager, Nginx reverse proxy, SNMP Notifier, and notification channels (Email, Telegram, Slack, MS Teams, Webhooks, SMS)
- Packaging and automating product deployments for client environments - repeatable, infrastructure-as-code driven delivery using Terraform and Ansible
- Implementing security best practices and ensuring compliance with industry standards and regulations
- Maintaining and improving deployment automation scripts (Bash) for multi-node bootstrap, service detection, and rolling updates
- Documenting infrastructure, deployment procedures, and runbooks - we maintain strict documentation standards
- Continuously learning and keeping up-to-date with new technologies and industry trends to improve system performance, security, and efficiency


Technology Landscape

Monitoring Stack: Prometheus, Grafana, Alertmanager, Nginx, SNMP Notifier
Application Servers: WildFly/FTACS, Hazelcast, Spring Boot microservices, IIS Windows
Databases: MySQL, PostgreSQL, Oracle, ClickHouse
Frontend: Angular, FastAPI (config UI)
Infrastructure: Hetzner Dedicated + Cloud, AWS (EKS, EC2, VPC, S3, Route53), Docker Compose, Kubernetes, GitHub Actions
IaC & Delivery: Terraform, Ansible
Notifications: Email (SMTP), Telegram, Slack, MS Teams, SNMP Traps, Webhooks, SMS
~20 exporter types: node, process, cAdvisor, MySQL, Oracle, JMX, ClickHouse, Postgres, Nginx, API metrics, and more