Hire the Best Kubernetes Developers

Hey, I'm Serge — a DevOps engineer and Linux sysadmin with 16 years of hands-on experience. Top Rated Plus on Upwork, $70K+ earned, 100% Job Success Score across 24 contracts. My day-to-day involves leading DevOps work for US and Israeli companies — finance, government, tech. Through my employer, the rate is around $100–120/hr — that includes company overhead, account managers, and the usual agency markup. Here on Upwork you hire me directly. No middlemen, no account managers. That's why the rate is lower — not because the work is different. What I focus on most: **Kubernetes and container infrastructure** I've set up and migrated dozens of projects to Kubernetes — EKS, GKE, AKS, and on-prem. I handle the full stack: Helm-based deployments, Grafana + Loki for monitoring and logging, Terraform for infra as code. If your app is still running on Docker Compose and you're hitting limits, this is exactly what I do. **CI/CD pipelines** Setting up proper pipelines from scratch — GitLab CI, GitHub Actions, Helm. Dev/stage/prod environments with proper Git flow so your developers aren't blocking each other. **Cloud infrastructure — AWS, GCP, Azure** Terraform for everything that can be described as code. Multi-environment setups, VPC, networking, RDS, S3, load balancers, security groups. Migrations between accounts, between clouds, and from on-prem to cloud. **AI infrastructure** More recently I've been setting up GPU-based AI infrastructure — Ollama, vLLM, LiteLLM proxy. If you're deploying local LLMs or building AI-powered apps and need the infra side sorted, that's something I can help with too. **A few practical things:** - Up to 8 hours/day — I work focused, not just "clocked in" - You work directly with me throughout the project - I write documentation so your team can actually use what I build If you have a project in mind and want to talk through the scope first, I'm happy to do a short call. Just send a message. Serge ---

A Reliable and Detailed-oriented individual Looking for work in specifically AWS based Cloud Infrastructure, possessing good interpersonal and analytical skills, who wish to work with 100% dedication.

Most backend engineers can write code. Fewer can architect a system that holds up at scale, survives a traffic spike, and stays observable when something breaks at 2am. That's the gap I fill. I'm a Top Rated Plus engineer on Upwork with a 100% Job Success Score across 34 contracts and 4,600+ hours — working with clients from startups to enterprises across ticketing, marketplace, gaming, and HR domains since 2011. What I actually do: I design and build production-grade backend systems in Go — from the API layer down to the infrastructure. That means event-driven microservices with Kafka or RabbitMQ, containerized deployments on Kubernetes, full CI/CD pipelines, and cloud infrastructure on AWS, GCP, DigitalOcean, or Alibaba Cloud. I don't hand you a working local demo and disappear — I deliver something that runs reliably in production, with proper observability, testing at every layer, and documentation your team can maintain. Specifically, I can help you if: — Your monolith is becoming a bottleneck and you need to decompose it into services that scale independently — You're building a new product and need a senior engineer who can own the backend architecture from day one — Your Kubernetes setup is held together with hope and tribal knowledge, and you need someone to make it solid — You need CICD that actually works — automated testing, container builds, and deployments to staging and production without manual steps Tech I work with daily: Go · PostgreSQL · Redis · Kafka · RabbitMQ · Elasticsearch · Docker · Kubernetes · Helm · Terraform · AWS · GitHub Actions · GitLab CI · gRPC · REST How I work: I ask the right questions before writing the first line of code. I communicate in plain language, not jargon. I've worked in agile teams, solo, and everything in between — I adapt to your workflow, not the other way around. And I treat your codebase like I'll be the one maintaining it, because sometimes I am. If you need a senior engineer who thinks in systems, communicates clearly, and delivers work you won't have to redo — let's talk.

I build infrastructure that stays up when it matters. Government platforms for 2M+ citizens, banking systems for 1M+ users, and AI rendering stacks on GPU Kubernetes clusters. Shipped on time, documented for the team that inherits it. 5+ years owning the full stack: physical hardware, hypervisors, Kubernetes, service mesh, cloud networking, CI/CD, observability, and GPU AI workloads. Across government, fintech, SaaS, and deep-tech startups. Government Scale — OpenG2P Ethiopia, 3 Ministries Leading platform engineering for Ethiopia's national OpenG2P welfare system across ATI, MoWSA, and EDRMC. Serving 2M+ beneficiaries on RKE2 with Rancher, Istio mTLS, Keycloak SSO, WireGuard site-to-site VPN, XCP-ng hypervisor with Hardware RAID 1+0, and a full Prometheus + Grafana + Alertmanager + Loki observability stack. Currently executing a large-scale ODK to OpenG2P data migration with schema mapping, validation pipelines, audit trails, and phased rollback. AWS Serverless Architecture — WeTruck Architect and operator of WeTruck's serverless logistics platform. CloudFront to ALB to WAF (deny-by-default with Telebirr payment gateway IP whitelisting) to Lambda (FastAPI via Mangum). Fully Terraformed infrastructure. GitHub Actions with OIDC federation (zero long-lived credentials), RDS PostgreSQL, DynamoDB for JWT token store, SQS with dead-letter queue, Secrets Manager, AWS Amplify for three Next.js frontends (back-office, transporter, shipper), and Route 53 private/public DNS. I own production incidents end-to-end and authored the full deployment runbook and troubleshooting playbook. AWS in daily use: Lambda, EC2, EKS, CloudFront, ALB, WAF, RDS, DynamoDB, SQS, Secrets Manager, Amplify, ECR, Route 53, IAM OIDC, VPC (private subnets, NAT Gateway, VPC endpoints), CloudWatch, ACM. MPLS and AI Rendering Infrastructure — MetaPlux (Tech Lead) Tech Lead on a distributed GPU-aware AI rendering platform. MPLS networks for deterministic, low-latency routing across distributed rendering nodes with label-switched paths and traffic engineering for QoS-sensitive GPU workload traffic. BGP and OSPF routing across hybrid environments connecting on-premises GPU clusters to cloud egress points. WireGuard VPN tunnels for secure, auditable connectivity. Multi-cloud strategy across AWS and Azure for rendering workload distribution. Platform architecture for GPU-aware Kubernetes scheduling and job orchestration. This role sits at the intersection of deep networking and modern cloud infrastructure, the combination most DevOps engineers don't have. AI and GPU Infrastructure — Exponent.ch (Switzerland) Provisioned and managed NVIDIA GPU-enabled RKE2 clusters running AI and automation workloads: n8n, Langfuse LLM observability, LibreChat, and ClickHouse analytics. Standardized Helm deployments across 5+ environments using shared-stacks architecture. Integrated Teleport for zero-trust cluster access, automated secrets via Lade and 1Password. Prometheus + Grafana + Mimir observability with 99.9% metric coverage, 60% MTTR reduction, and 3 critical outages prevented through proactive alerting. Banking Infrastructure — 6 Ethiopian Banks, 1M+ Users Delivered high-availability mobile banking and USSD platforms for Siinqee Bank, Hijra Bank, Wegagen Bank, and others with 99.95% uptime across 1M+ users. Designed MPLS network architecture for multi-branch WAN connectivity with QoS for transaction data. Built Jenkins CI/CD for Maven Java apps (4 hours to 15 minutes). ELK processing 10TB+ daily logs. Proxmox and AWS hybrid cloud with ~35% cost reduction. Full Technical Stack Container Orchestration: Kubernetes (RKE2, EKS, K3s), Docker, Helm, Rancher, OpenShift Infrastructure as Code: Terraform, Terragrunt, Ansible, OpenTofu CI/CD: GitHub Actions, GitLab CI, Jenkins Cloud: AWS (full suite), Azure, OpenStack Networking: MPLS, BGP, OSPF, WireGuard, HAProxy, NGINX, VLAN, VPC design Service Mesh: Istio (mTLS, traffic policies, ingress) Observability: Prometheus, Grafana, Mimir, Alertmanager, Loki, OpenTelemetry, ELK, Zabbix, SigNoz Security and Identity: Keycloak, HashiCorp Vault, Teleport, IAM OIDC Virtualization: Proxmox, XCP-ng, VMware AI and Automation: NVIDIA GPU Kubernetes, YOLO, ONNX, TensorRT, n8n, Langfuse, LibreChat, ClickHouse Databases: PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, DynamoDB Backend: Python (FastAPI), Bash, Node.js How I work I overcommunicate early, give realistic timelines, and ship verified, not "it should work." I treat testing as the real deliverable, not a checkbox. If something is out of scope or a bad idea, I'll tell you before you spend money on it. Message me if you need: - AWS or Kubernetes infrastructure built or fixed - CI/CD pipelines developers actually trust - GPU and AI infrastructure with inference pipelines and observability - Migration from cloud to cloud, or on-prem to production cloud - MPLS, BGP, or complex network architecture across hybrid environments - Observability that catches problems before users do

Most clients find me after wasting weeks on engineers who deploy fast but leave security gaps, brittle scripts, and zero documentation behind. Well, I do the opposite. I'm a DevSecOps engineer with 7+ years building cloud infrastructure that is production-hardened from day one, not secured as an afterthought. AWS, Kubernetes, CI/CD, secrets management, container security, GDPR-compliant workflows, all of it built clean and documented properly. I'm also one of the few engineers who builds AND secures AI agent systems. LangChain, CrewAI, RAG pipelines, MCP servers, I understand the attack surface of modern AI infrastructure that most security engineers have never touched. 🔐 Security & DevSecOps 🔹 Linux Hardening: firewalls, iptables, SSH lockdown, fail2ban, SSL/TLS 🔹 Secrets Management: HashiCorp Vault, AWS Secrets Manager, Azure Key Vault, GCP Secret Manager 🔹 Container Security: Docker Hardening, Kubernetes RBAC, Network Policies, Pod Security Standards 🔹 Server Management: WHM, cPanel, Plesk, Webmin, Virtualmin 🔹 GDPR-ready Workflows: encrypted APIs, secure backups, access control 🔹 CI/CD Security: secrets scanning, signed images, GitHub Actions, GitLab CI, Jenkins ☁️ Cloud Infrastructure & DevOps 🔹 AWS, GCP, Azure, DigitalOcean: deployment, scaling, cost optimization 🔹 Infrastructure as Code: Terraform, Pulumi, Ansible 🔹 CI/CD pipelines: GitHub Actions, Jenkins, GitLab CI 🔹 Container orchestration: Docker, Kubernetes, Helm 🔹 GitOps: ArgoCD, Flux 🤖 AI Infrastructure & Automation 🔹 Multi-agent systems: LangChain, LangGraph, CrewAI, AutoGen 🔹 Model Context Protocol (MCP) server integration 🔹 RAG pipelines & vector search: Pinecone, Qdrant, Weaviate, ChromaDB 🔹 LLM app builders: Dify.ai, Flowise 🔹 Multi-model routing: OpenRouter 🔹 AI agents: Claude, ChatGPT, Gemini, Azure OpenAI, AWS Bedrock 🔹 Local LLMs: Ollama, Mistral, Llama on Linux servers 🔹 Workflow automation: n8n, Make, Zapier, APIs & webhooks 💻 Full Stack & WordPress 🔹 Backend: Laravel, Node.js, Java, NestJS, Python, Go 🔹 Databases: PostgreSQL, MySQL, MongoDB, Redis 🔹 WordPress: Elementor, Divi, Bricks, Oxygen, WP-CLI, Gutenberg, Headless WordPress 📊 Monitoring & Reliability 🔹 Observability: Prometheus, Grafana, OpenTelemetry, ELK Stack, Sentry, CloudWatch 🔹 Automated backups: Rclone, AWS S3, GCP buckets 💼 You're a great fit if you are: 🔹 A startup that needs infrastructure secured from day one 🔹 An agency that wants one reliable long-term technical partner 🔹 A business running AI agents that needs someone who understands both the build side and the security risks Tell me what you're building. I'll make it secure, automated, and production-ready.

hire.cansu.dev I help businesses build fast, reliable APIs and automate infrastructure so deployments are smooth and systems scale without downtime. With experience in Go, Python, and Linux server management, I can set up everything for you. Core Services - Backend Development: Fast & reliable APIs (Go, Python, FastAPI, ASP.NET, Typescript). - DevOps & Automation: Docker, Kubernetes, CI/CD pipelines, Infrastructure as Code. - Web Scraping & Automation: Playwright, Puppeteer, Python, Go. - Cloud & Servers: AWS, Linux Provisioning, PostgreSQL, Redis, Cloudflare. - Monitoring & Reliability: Prometheus, Grafana, Loki, OpenTelemetry.