GeezerVison is showing rkiselenko.dev — rkiselenko.dev
Technical Skills
Languages Golang, Python, TypeScript Kubernetes EKS, GKE, OpenShift CI/CD GitLab CI, Argo CD, GitHub Actions IaC/Config Terraform, Terragrunt, OpenTofu, Ansible Observability Prometheus, VictoriaMetrics, Grafana, OpenTelemetry Data/Streaming Postgres, ClickHouse, Redis, Kafka Agentic coding tools Opencode, Claude Code
Summary
End-to-end software engineer and technical lead with 10+ years of experience designing customer-facing product features and building high-availability platforms, infrastructure, and distributed systems.
Work
Tech Lead / Golang Engineer | Astra Linux, Remote 2025-10 – Present- Lead a 10+ engineer team building an observability platform that collects and analyzes operational diagnostic telemetry for infrastructure node health.
- Designed and shipped a cloud-based LLM-backed coding agent system serving as the project's central knowledge hub; restructured the team's development workflow around it to ingest engineer proposals and accelerate project-wide context retrieval.
Platform Engineer | Exness, On-site/Hybrid 2024-07 – 2025-10- Owned the end-to-end lifecycle of 200+ Kubernetes clusters across AWS, GCP, and on-prem, provisioning and updating cluster infrastructure with Terraform/Terragrunt.
- Migrated Argo CD to a centralized GitOps model across the fleet, reducing deployment drift and manual deploy interventions by 90%.
- Ran rolling, zero-downtime updates for ingress, PVC, and Vault workloads across 30 clusters at once with no regressions; diagnosed and tuned deep Calico CNI (BIRD/BGP) issues fleet-wide.
Platform Engineer | tutu.ru, Remote 2023-06 – 2024-07- Developed Golang automation tools for workflow orchestration and data processing, reducing workflow execution time by 40%.
- Engineered CI/CD pipelines with automated validation, feature flagging, and compliance gates that block non-compliant deployments using Vault, OPA, and policy-as-code.
- Managed 6 K8s/OpenShift clusters; standardized GitOps configuration management with Helm/Terraform.
Golang Engineer | HelloFresh, On-site/Hybrid 2023-01 – 2023-07- Built data integration pipelines using Kafka and microservices, routing 100K messages/sec with 99.9% delivery success.
Golang Engineer | Dell EMC, Remote 2021-07 – 2022-08- Designed CSI drivers for Dell platforms including PowerStore, PowerMax, PowerScale, and Unity XT to enable reliable integration between Kubernetes and enterprise storage systems.
Software Engineer | SketchAR, Remote 2019-06 – 2021-07- Architected high-throughput, low-latency APIs and data processing services on AWS (Lambda/EC2/Fargate), serving 500k requests/sec at 150 ms p95 latency.
Software Engineer | Mailfold, Remote 2016-08 – 2017-07- Designed a web application with 99.9% availability and 200 ms p95 latency, from requirements to production.
- Delivered L1/L2 technical support and built the MVP.
- Migrated the application from Heroku to DigitalOcean, reducing infrastructure cost by 80% and improving deploy time by 50%.
Software Engineer | Appodeal, Remote 2015-08 – 2016-08- Introduced React to the advertisement builder UI, supporting 40+ components for a component-driven interface.
- Migrated a Ruby on Rails monolithic service to 30+ Go services.
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