Hi, I’m Sanjeeb DARSHAN

A senior SRE and platform engineer.

About

about_me.png



Senior Platform and SRE Engineer with over 12 years of experience designing, building, and operating reliable systems and scalable platforms.
Specialized in debugging complex, persistent issues, improving system resilience, and applying pragmatic architectural solutions that balance technical excellence, maintainability, and operational efficiency.
Focused on engineering robust infrastructure, simplifying complexity, and delivering sustainable solutions that scale with business needs.

Status: Open to senior role.


Skills

skills.png

Systems & Administration

Linux

Virtualization

KVM · QEMU · Proxmox

Networking & Cloud Native Networking

Reverse Proxy · Load Balancing · Nginx · Apache2 · Cilium · eBPF

Messaging, Streaming & Distributed Coordination

RabbitMQ · Apache Kafka · etcd · Apache ZooKeeper

Scripting & Configuration Languages

Bash · Python · Go Templating · YAML · HCL

Infrastructure as Code & Configuration Management

Terraform · Packer · Ansible · SaltStack · Chef · Puppet

Containerization & Orchestration

Kubernetes · Docker · Helm

CI/CD & Deployment Automation

GitHub Actions · GitLab CI/CD · Jenkins · Helmfile

GitOps & Continuous Delivery

Argo CD · Flux

Secrets Management & Security

SOPS · HashiCorp Vault · OpenBao

Service Discovery, IPAM & DNS

Consul · phpIPAM · PowerDNS · BIND · NetBox

Cloud Platforms & Infrastructure

GCP · AWS · Azure · OVHcloud · Cloudflare · Yandex

Observability, Monitoring & Alerting

Grafana · Prometheus · Alertmanager · VictoriaMetrics · Elasticsearch · Kibana · OpenTelemetry · ELK · Filebeat · Rsyslog · Zabbix · Datadog · Nagios · Icinga · PagerDuty

Databases

ClickHouse · Couchbase · Elasticsearch · MySQL · MongoDB · PostgreSQL

Big Data

Ambari

Data Governance & Metadata Management

OpenMetadata

Security & Compliance

PCI DSS · Infrastructure Security · nftables · OpenVPN

Artificial Intelligence & AI-Assisted Development

Claude Code · Skills

Collaboration & Methodologies

Jira (Scrum) · Confluence · Notion · Kanban · LaTeX


Career

career.png

Rakuten France · France
January 2024 – Present

Technical Leadership · Infrastructure Strategy · Kubernetes · Cloud & Security · Platform Engineering

  • ◆ Defined the objectives and technical roadmap of the Ops team (8 engineers), setting infrastructure strategy and priorities.
  • ✓ Achieved 3x higher deployment velocity through environment standardization and automated provisioning, which strengthened operational reliability and reduced time spent on troubleshooting.
  • ✓ Led the move from VMware to the open-source Proxmox VE, eliminating €72K/year in licensing fees and removing vendor lock-in after Broadcom’s licensing changes.
  • ✓ Led the integration platform migration to a new private cloud provider, saving €192K/year.
  • ✓ Led the migration of configuration management from SaltStack to Ansible and introduced a private Terraform registry, adopting industry-standard open-source tools that widened the talent pool, sped up onboarding, and strengthened Infrastructure as Code (IaC) practices.
  • ✓ Consolidated edge services from 3 vendors onto Cloudflare at no additional cost, simplifying operations and strengthening security.
  • ◆ Designed and configured Cloudflare rate-limiting rules to control and protect web service traffic.
  • ◆ Co-designed a Golden Path to standardize engineering practices and simplify development and deployment workflows.
  • ◆ Designed Golden Images to standardize system configurations and ensure consistent, reproducible infrastructure provisioning.
  • ◆ Designed a unified self-service portal for technical teams, centralizing account creation and access to CI/CD, logging, monitoring, and other engineering platforms.

Rakuten France · France
February 2021 – January 2024

Infrastructure & Production · Kubernetes · GCP · Infrastructure as Code · High Availability

  • ◆ Continuously improved the reliability, performance, and resilience of production infrastructure.
  • ◆ Collaborated with development and operations teams to improve operational practices, automation, and production deployment quality.
  • ◆ Designed and optimized reverse proxy and load-balancing architectures to ensure high availability.
  • ◆ Implemented zero-downtime deployment strategies to minimize service interruptions during production releases.
  • ◆ Analyzed and optimized network traffic flows to reduce inter-site traffic in production environments.
  • ◆ Designed technical solutions and deployed applications on Google Cloud Platform (GCP).
  • ◆ Deployed, managed, and maintained Kubernetes clusters, including application deployments using Helm charts.
  • ◆ Supported development teams in migrating containerized applications from Docker to Kubernetes.
  • ◆ Advised and supported Release Managers ahead of production deployments, focusing on technical prerequisites, operational risks, and deployment reliability.
  • ◆ Maintained and upgraded Infrastructure as Code (IaC) and configuration management tools, particularly Terraform and SaltStack, while promoting automation best practices.

Weborama · Levallois-Perret, France
December 2017 – February 2021

Data Management Platform (DMP) · R&D · Hybrid Cloud & On-Premises

  • ◆ Designed and implemented a column-oriented storage solution for a high-availability, high-throughput service.
  • ◆ Led front-end workload migrations to Google Cloud Platform (GCP), including deployment automation, acceptance testing, and monitoring.
  • ◆ Supported Tech Leads with architecture decisions, Agile ticket management, and technical documentation.
  • ◆ Owned SRE responsibilities for high-volume WCM data collection across GCP, Yandex, and datacenters.
  • ◆ Migrated stateless daemons to Kubernetes.
  • ◆ Participated in on-call rotations, troubleshooting, incident diagnosis, and resolution.
  • ◆ Managed operational infrastructure, including hardware lifecycle, hardware alerting, maintenance contracts, and vendor relationships.
  • ◆ Oversaw the SMDB operational scope.

OPEN · Levallois-Perret, France
June 2016 – December 2017

Client assignment: Weborama · DMP R&D

  • ◆ Designed and implemented infrastructure improvements for high-throughput environments.
  • ◆ Automated operational processes and developed acceptance test procedures.
  • ◆ Anticipated infrastructure capacity and resource requirements.
  • ◆ Supported development teams with deployments, troubleshooting, and monitoring.
  • ◆ Redesigned on-premises infrastructure, including rack reorganization and implementation of an SMDB.
  • ◆ Managed infrastructure obsolescence and lifecycle improvements.

Mobile Devices Ingenierie · Villejuif, France
November 2013 – June 2016

Cloud Operations & Production Engineering

  • ◆ Managed cloud platforms and implemented server configuration management.
  • ◆ Introduced monitoring, alerting, and service status-page solutions.
  • ◆ Automated deployment processes and integrated software across multiple platforms.
  • ◆ Planned and coordinated production releases and deployment phases.
  • ◆ Maintained and evolved platforms through resource analysis, version management, and migration planning.
  • ◆ Designed and implemented redundant architectures.
  • ◆ Integrated OpenStack into the infrastructure.
  • ◆ Provided production support, on-call incident response, troubleshooting, and resolution.
  • ◆ Managed production budgets.

Mobile Devices Ingenierie · Villejuif, France
April 2012 – November 2013

  • ◆ Administered Linux and Windows servers, workstations, user accounts, file shares, and printing services.
  • ◆ Installed and configured servers, network switches, routers, firewalls, and DNS services.
  • ◆ Managed user permissions, roaming profiles, and backup systems.
  • ◆ Implemented a Debian package caching proxy.
  • ◆ Administered the GLPI ticketing system and provided end-user support.
  • ◆ Performed preventive and corrective maintenance on servers, workstations, and peripherals.
  • ◆ Coordinated infrastructure projects, including service migrations, production deployments, workstation installation automation, Internet access migration, and centralized backup implementation.

Capitaldata · Montreuil-sous-Bois, France
September 2011 – February 2012

  • ▸ Maintained and enhanced local and remote information systems.
  • ▸ Implemented a high-availability, load-balanced architecture.
  • ▸ Integrated Google’s Ad Exchange technology (DoubleClick).

H5 Audits · Saint-Ouen, France
April 2011 – September 2011

  • ▸ Improved packet-processing performance of a network probe.
  • ▸ Developed a network traffic generator.

Let’s connect

My current local time is .

[email protected]