Financial Cloud DevOps Platform and Legacy Migration

Migrated SVN + Change Flow file-based deployment to air-gapped GitLab CI/CD. Built DevOps toolset on existing private cloud infrastructure and integrated on-premises GitLab Runner for a platform of 1,994 users and 579 projects. Built image integrity system based on Helm Chart hash and container Digest verification.

Architecture

InfoGrab Finance

2025.01 - 2026.07

Capital Market IT Company

Tech Stack

GitLab Kubernetes Loki Harbor ITSM

Highlights

DevOps toolset on existing private cloud + on-premises Runner integration (1,994 users, 579 projects)
Migrated SVN + Change Flow file-based deployment to GitLab Runner CI/CD
Image integrity system based on Helm Chart hash and container Digest verification
Stable GitLab, Mattermost operations on air-gapped Kubernetes
Built log observability for operations — 14 GitLab pod types collected via Grafana and Loki, with automated monthly inspection reports

Key Tasks

DevOps Toolset Setup and Integration

Built DevOps toolset (GitLab, Mattermost, etc.) on existing private cloud infrastructure
On-premises GitLab Runner integration
Environment setup for 1,994 users and 579 projects

DevOps Platform Setup

GitLab deployment on private-cloud Kubernetes
Harbor container registry deployment
Prometheus + Grafana monitoring stack setup
Mattermost collaboration tool deployment

Legacy System Migration

SVN to GitLab code migration
Change Flow file-based deployment to GitLab Runner CI/CD
ITSM-integrated branch strategy implementation
Automated existing build/deploy processes

Image Integrity Verification

Helm Chart hash comparison verification
Container image Digest comparison verification
Internal Harbor image registry operations
Financial regulatory compliance architecture

Operations and Observability

Built log observability for operations — 14 GitLab pod types collected, Grafana dashboards, Loki
Regular GitLab and Mattermost upgrades with pipeline policy controls (deploy-cancel roles, protected-branch MR enforcement)
Responded to an 85-minute job stall — log retention 6h to 30d, DB connections 100 to 200, SSH executors classified as at-risk, container registry GC
Automated monthly inspection reports with n8n plus Claude Code; incident response and security patching

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Architecture