Radharaman Sethi

OpenStack Infrastructure Engineer with 2+ years of hands-on experience architecting, deploying, and operating multi-node private cloud environments using Kolla-Ansible. Deep operational depth across Nova, Neutron, Cinder, Glance, Keystone, RabbitMQ, MariaDB, and HAProxy — including compute-scheduling diagnostics, TLS-secured container APIs, and high-availability control-plane troubleshooting. Built and operate the OpenStack infrastructure layer underpinning a multi-tenant cyber range platform, enabling isolated lab networks, VPN-based participant access, and client-facing proof-of-concept deployments.

OpenStack Infrastructure Engineer at Rapifuzz Private Limited (2024-01 – Present)

Official designation: Cyber Security Research Engineer

• Architected and operated multi-node OpenStack private cloud infrastructure using Kolla-Ansible, integrating Nova, Neutron, Cinder, Glance, Keystone, Placement, RabbitMQ, MariaDB, and HAProxy in a containerized production deployment.
• Diagnosed and resolved complex Nova instance-scheduling and build failures (NoValidHost, compute registration issues, resource exhaustion) using Placement resource analysis and hypervisor-level capacity evaluation across multiple compute nodes.
• Designed and hardened Neutron virtual networking — tenant/provider networks, routers, floating IPs, security groups, and port security — and proposed multiple network topology models to optimize security and operational efficiency across cyber range and enterprise lab environments.
• Resolved Cinder and iSCSI boot-from-volume and attachment failures involving os-brick and backend connectivity issues, working across LVM- and Ceph-backed storage architectures.
• Implemented and troubleshot TLS-secured OpenStack API endpoints and certificate trust chains across containerized services, plus HAProxy load balancing and noVNC console connectivity.
• Investigated OpenStack control-plane and high-availability failures spanning RabbitMQ messaging, MariaDB, and containerized service communication, restoring platform stability with minimal downtime.
• Managed Glance image lifecycle (creation, hardening, versioning, cleanup) and built custom Docker images and private registry workflows for Kolla container deployments.
• Provisioned and operated multiple distinct cyber range lab types — dedicated training labs, competition-style (CTF) environments, live-fire incident-response ranges, and client demonstration environments — supporting instructor-led training, competitive challenges, and tabletop/crisis-simulation exercise formats, each engineered with tailored network isolation, VPN-based access, and resource allocation.
• Collaborated with the security engineering team on scenario design and validation for enterprise cyber exercises, contributing infrastructure-level input on environment requirements and exercise indicators for incident-response and crisis-management simulations aligned to the MITRE ATT&CK and D3FEND frameworks.
• Researched and proposed new cyber-range platform capabilities — including gamified, escape-room-style lab formats, integrity/anti-cheating detection mechanisms, and containerized lab environments — partnering with API, front-end, and UI/UX teams to bring improvements into production.
• Authored technical training guides, SOPs, and compliance-related documentation to standardize onboarding and operational consistency across the platform, alongside architecture diagrams and RCA documentation for recurring infrastructure incidents.
• Delivered client-facing OpenStack proof-of-concept deployments and technology demonstrations for enterprise and public-sector engagements; drove infrastructure optimization initiatives including image standardization, flavor right-sizing, automated lab resets, and network topology simplification, and contributed infrastructure-level input to RFPs and security proposals.

Security Intern at Ramognee Technologies (2023-06 – 2023-12)

• Supported management of OpenStack lab environments for cybersecurity training platforms, assisting with Nova, Neutron, and Glance operations under senior engineer guidance.
• Assisted with Cinder volume management and image preparation for lab environments.
• Contributed to learning management system (LMS) content and created CTF challenges for platform users; trained end users and clients on platform usage.
• Automated lab setup workflows using Linux, Ansible, and Docker, reducing manual provisioning effort.

B.Tech in Cyber Security – NIIT University (2020-01 – 2024-01)