Key Achievements

Delivering measurable impact across cloud infrastructure and banking platforms

☁️

Hybrid Cloud Banking Infrastructure

Designed and deployed high-availability OCI and AWS infrastructure for Core Banking Solution workloads across multiple banking clients

99.99% Uptime
📊

Enterprise Observability Platform

Led R&D initiative migrating from legacy Graylog to Grafana + Loki + Promtail stack managing 100+ servers

60% Cost Reduction
🛡️

Multi-Region DR Architecture

Implemented disaster recovery solutions with remote peering connections ensuring high availability for banking applications

Near-Zero RTO
⚡

Infrastructure Automation

Automated deployment processes using Docker, Terraform, and Ansible reducing deployment time and improving reliability

70% Faster Deployments

Professional Profile

Senior Cloud Network & Infrastructure Engineer with 3+ years of experience designing and deploying enterprise-grade cloud infrastructure for banking and financial services. Proven expertise in Oracle Cloud Infrastructure (OCI) and AWS architecture, hybrid cloud networking, disaster recovery planning, and observability platforms managing 100+ servers across distributed environments.

Enterprise Banking Infrastructure Experience

Core Banking + HA/DR

  • Core banking solution hosting with high-availability service tiers and strict change control.
  • DR planning with RTO/RPO objectives, periodic simulation, and rollback strategy.
  • Multi-site secure network connectivity across datacenter, cloud, and branches.
  • Segregated access model for infra operations, audit, and application support teams.

Reference Cloud Topology

Internet / Branches
WAF + LB Tier
Application Subnets
DB / DR Sync Tier

Flow: VPN/FastConnect/Direct Connect → secure ingress → segmented app services → protected data and DR domains.

Experience Timeline

Bankai Informatics

Oct 2023 – Present

Senior Network Engineer – Cloud Team

  • Architected multi-tier OCI VCN infrastructure with network segmentation improving security posture for banking workloads by 40% using NSG, DRG, and Service Gateways
  • Deployed hybrid cloud connectivity using IPsec VPN and FastConnect enabling fault-tolerant communication between 15+ bank branches and cloud infrastructure
  • Implemented OCI Load Balancers and Web Application Firewall protecting internet banking platforms serving 50,000+ daily users against web threats
  • Designed multi-region disaster recovery architecture using remote peering connections achieving 99.99% availability SLA for critical banking services
  • Led R&D initiative migrating from Graylog to Loki + Grafana + Promtail stack reducing log storage costs by 60% while improving query performance by 10x
  • Deployed Nagios monitoring across 100+ application, database, and middleware servers reducing MTTR by 45% through proactive alerting
  • Integrated Privileged Access Management and Active Directory authentication for secure administrative access meeting banking compliance requirements
  • Configured automated backup orchestration using LVM and NFS storage ensuring RPO-aware data protection with 15-minute recovery points

PHP Infosec

Nov 2022 – Oct 2023

Network Support Engineer

  • Configured MikroTik routers for ISP and enterprise environments implementing VPN, hotspot authentication, and bandwidth management for 20+ international clients
  • Developed TR-069 automation solutions for remote CPE management reducing manual configuration effort by 80% and improving deployment speed
  • Performed WAN/LAN troubleshooting and optimization for latency-sensitive services improving network performance by 35% and reducing packet loss
  • Represented company as technical delegate at Convergence Expo 2022 Delhi showcasing networking solutions to 500+ industry professionals

Cloud Architecture Depth

OCI Architecture

  • Multi-tier VCN architecture with web/app/db segmentation and NSG policy isolation.
  • DRG-based hub-and-spoke routing model with Service Gateway + NAT Gateway egress controls.
  • Public Load Balancer + WAF in front of banking-facing applications.
  • IPsec VPN and FastConnect-ready hybrid pattern for on-prem and branch interoperability.
  • Cross-region DR strategy with warm standby and tested recovery runbooks.

AWS Architecture

  • Multi-AZ VPC subnet strategy (public ingress, private workloads, restricted data tiers).
  • IAM role-based access boundaries for workloads, operators, and deployment pipelines.
  • EC2 + ALB reference architecture with autoscaling policy and secure SG layering.
  • CloudWatch metrics, logs, and alarms mapped to service SLOs.
  • Hybrid connectivity principles aligned to VPN and Direct Connect landing patterns.

Observability Architecture

Grafana + Loki + Promtail Program

  • Graylog to Loki migration roadmap to simplify operations and reduce ingestion cost.
  • Centralized log aggregation with Promtail pipelines and structured labels.
  • Unified NOC views in Grafana for infrastructure, applications, and network telemetry.
  • Monitoring and alerting coverage for 100+ servers across mixed environments.

Network Engineering

Routing, Segmentation, and ISP Design

  • MikroTik-centric ISP edge concepts with policy routing and bandwidth governance.
  • Enterprise VLAN segmentation model for user, server, management, and security zones.
  • BGP routing concepts for upstream redundancy and route control at WAN edge.
  • TR-069 automation concepts for lifecycle configuration and remote CPE operations.
  • WAN/LAN optimization for latency-sensitive banking and transaction services.

Technical Skills

Comprehensive expertise across cloud platforms, networking, and infrastructure automation

Cloud

OCI VCN/DRG/FastConnect96%
AWS VPC/EC2/Load Balancer93%
Multi-Region DR Architecture94%

DevOps

Kubernetes & Docker91%
Terraform & IaC90%
CI/CD Pipelines88%

Networking

VPN/IPsec/FastConnect95%
Network Segmentation94%
MikroTik/Cisco/Ubiquiti93%

Observability

Grafana & Loki92%
Prometheus & Alertmanager90%
Nagios Monitoring91%

Security

Firewall & WAF90%
IAM & PAM89%

Systems

Linux Administration93%
Bash Scripting88%

Featured Projects

Real-world case studies demonstrating architecture expertise and measurable outcomes

Docker Monitoring Stack

Enterprise-grade observability platform for distributed container workloads with centralized logging, metrics collection, and intelligent alerting

Problem

Legacy Graylog infrastructure faced scalability limitations, high storage costs, and lacked modern visualization capabilities for 100+ servers across banking environments

Solution

Architected and deployed Prometheus + Loki + Grafana stack with Promtail agents, implementing structured logging pipelines, automated retention policies, and SLO-based dashboards for NOC teams

Outcome

Reduced log storage costs by 60%, improved query performance by 10x, and decreased incident response time by 45% through enhanced observability and proactive alerting

GrafanaLokiPromtailPrometheusAlertmanagerDockerYAMLPagerDuty

Architecture

Promtail agents → Loki aggregation clusters → Grafana visualization + Prometheus metrics + Alertmanager routing → PagerDuty integration

View on GitHub →

OCI CostWatch

FinOps visibility platform for OCI workloads identifying cost optimization opportunities and enforcing budget guardrails across banking cloud infrastructure

Problem

Banking clients lacked visibility into cloud spend patterns, leading to overprovisioned resources, unexpected cost overruns, and inability to track cost allocation by department or project

Solution

Built cost analytics dashboard using OCI APIs, implementing anomaly detection algorithms, utilization heuristics, and automated rightsizing recommendations with budget threshold automation

Outcome

Identified 35% cost reduction opportunities across client workloads, automated budget alerts preventing cost overruns, and provided actionable rightsizing insights saving $50K+ annually

OCINode.jsREST APIsCost AnalyticsAutomationDashboardBudget Alerts

Architecture

OCI Cost and Usage API → Data processing engine → Anomaly detection algorithms → Budget threshold automation → Interactive visualization dashboard

View on GitHub →

Terminal Simulation

$ oci network drg list --compartment-id banking-prod
$ aws ec2 describe-vpcs --region ap-south-1
$ terraform apply -var environment=production
$ kubectl get nodes -o wide
Traffic: 1.6Gbps
P95 Latency: 14ms
Infra SLO: 99.99%
Download ATS Resume

Get In Touch

Looking for a cloud infrastructure expert? Let's discuss how I can help with your next project.

Email:sanjayjakhar.jsr@gmail.com
Phone:+91-9530073091
Location:Ahmedabad, India

Ready to connect

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