Konstantin Makeikin

Florianópolis, Brazil · Remote

• > Own the full infrastructure lifecycle for a multi-cloud VPN platform: 259 servers, 30+ countries, 5,000+ active subscribers
• > Designed and implemented IaC with Ansible — automated provisioning, configuration management, and rolling updates across the entire fleet
• > Built CI/CD pipelines (GitLab CI) with blue-green deployments, automated tests, and zero-downtime releases for Java/Spring Boot backend
• > Full observability stack: Prometheus + Grafana (26 alert rules, 13 dashboards), centralized logging, multi-channel incident alerting with <5 min MTTR
• > Migrated L4 proxy layer from nginx to kernel-space nftables + flowtable — eliminated userspace overhead, cut RAM usage by 75% (1.6 GB → 400 MB per node)
• > Developed Python async service (FastAPI + AsyncSSH) for parallel orchestration of 86 servers with 50 concurrent connections — config sync, health checks, traffic analytics
• > Architected account pool pre-provisioning system reducing user activation latency from 30s to near-zero
• > Integrated 3 payment providers with webhook reconciliation, idempotent processing, and automated retry logic

Florianópolis, Brazil · Remote

• > Designed and maintained a 31-microservice platform for real-time vessel monitoring and fleet management across international waters
• > Owned CI/CD for all 31 services: GitLab pipelines with automated testing, container builds, and staged rollouts
• > Developed 15+ backend microservices (Java/Kotlin, Spring Boot): authentication, admin, data ingestion, alerting, and monitoring
• > Built edge agent in Go for onboard data collection from vessels via MQTT, Modbus, and NMEA-0183 protocols over satellite links
• > Designed event-driven data pipeline: NATS JetStream for reliable inter-service messaging, Redis Pub/Sub for real-time notifications
• > Managed PostgreSQL + TimescaleDB cluster for high-throughput time-series telemetry ingestion and retention policies

• > Provided infrastructure consulting for 15+ B2B clients: architecture design, capacity planning, migration strategies
• > Managed 10+ VMs running full service stack: VoIP, email, VPN, Telegram bot with AI integration, push notifications
• > Virtualization infrastructure for multiple client environments with Zabbix monitoring and 99.5%+ uptime SLA
• > Implemented backup strategies, disaster recovery procedures, and security hardening across all client environments

• > Progressed from Network Admin to Operations Lead managing a regional ISP serving 10,000+ subscribers
• > Full ISP infrastructure: BGP/IX peering, VRF, redundant routing, multi-operator interconnects — peak 180 Gbps
• > Managed 500+ network switches (24-port) covering 2 districts, fiber backbone with redundant optical links
• > Core services: billing system, DHCP, DNS, NAT, NetFlow collectors, IP address management, VoIP telephony
• > Data center rack architecture design, server provisioning, and network segmentation
• > Led disaster recovery after catastrophic database failure — restored service for 10,000+ customers within SLA
• > Managed cross-functional teams: network engineers, field technicians, NOC operators, and customer support

Moscow, Russia

• > "Quest of the Year 2016" — launched from zero to 150+ bookings/month, built a team of 8, managed 7M+ RUB budget

Moscow Region, Russia

• > Promoted twice in 2 years (Support → Admin → Senior Admin), managed DOCSIS 2/3 cable infrastructure and network topology redesign