11/10/2026 updated
60 % partially available
Senior DevOps 5+ year experience, work with design architecture, develop code in python, golang..
Wroclaw, Poland
Worldwide
AI AgentsIAMProxmoxApplication Programming Interfaces (APIs)Amazon S3DevOpsGroovyHyper-VHypervisorPython (Programming Language)OpenVPNUi PatternsAnsibleVaultGitlab-ci
DevOps / Platform engineer and software architect: Linux infrastructure, CI/CD, identity & access management and cloud-native development in Go, Python and Groovy, including air-gapped environments. Freelancing since 2017: 15+ completed projects on Freelancehunt, all rated 4.9-5.0.
Architecture
- Design of platform services from requirements: ADRs, technical specifications, OpenAPI-first APIs, data models, phased MVP roadmaps
- Hexagonal / ports-and-adapters design, pluggable drivers, reconciliation loops, event-driven systems (NATS), policy-based authorization (OPA, RBAC)
- Example: designed a multi-hypervisor VM orchestrator in Go (Proxmox, Hyper-V via WinRM; PostgreSQL, Vault, Prometheus) with a Kubernetes autoscaling plugin that provisions cluster nodes on demand
Development
- Go for Kubernetes and cloud: operators and controllers (client-go, controller-runtime, Kubebuilder, CRDs, reconciliation loops, webhooks), cluster-autoscaler gRPC providers, cloud-native microservices, REST/gRPC APIs, cloud and hypervisor integrations (AWS SDK, Proxmox, Hyper-V), Terraform providers
- Python: FastAPI, Pydantic, SQLAlchemy, Celery, pytest; Ansible plugins, CLI tools, Telegram bots (OpenAI API), LLM pipelines
- Groovy: Jenkins shared libraries with unit tests, Script Console automation, pipeline-as-code
- Bash, PowerShell, SQL (PostgreSQL)
CI/CD & Automation
- Jenkins, Gerrit, self-hosted GitLab; Ansible roles and audit playbooks
- Artifactory (RPM mirrors), Docker, Docker Compose
Linux & Cloud
- RHEL 8/9 and Ubuntu: administration, upgrades, patch management, CVE remediation (RHSA, EUS/E4S, kpatch)
- AWS: SaaS migration from on-premises; Hyper-V, Proxmox VE, CloudStack; Kubernetes & Helm
- LAMP/LEMP (Nginx, Apache, MySQL), WordPress hosting, SFTP
IAM & Security
- HashiCorp Vault: KV, PKI, AppRole/JWT auth, policies, audit
- Service-account inventory, credential rotation standards and runbooks (passwords, tokens, SSH keys, X.509)
- Active Directory / LDAP, SAML 2.0 / ADFS, OIDC, Keycloak SSO; account and SSH-key audits, gitleaks, PKI/TLS
Observability & Networking
- Prometheus, Grafana, Loki, alerting
- MikroTik, UniFi, VLANs, IPsec, OpenVPN (incl. IPv6); Security Onion, Suricata, Zeek
Selected projects
- RHEL patch-compliance matrix (Ansible + Python filter plugins + Jenkins), CVE reports, 100+ unit tests
- Jenkins Groovy shared library and a credential-rotation tracker with Grafana
- Service-account inventory and rotation runbooks for Jenkins, Gerrit, LDAP, Artifactory, Kubernetes
- Freelance: SaaS migration to AWS, Telegram bot on OpenAI Assistants API, LAMP/LEMP management scripts, Raspberry Pi Zero W firmware
Industry: telecommunications, enterprise IT. Languages: Ukrainian, English.
Experience
Professional experience5 - 10 years
Freelancer since2018
Languages
EnglishFluentPolishGoodUkrainianNative speaker