Agent Banking Secure Mobile APK Delivery Portal
A centralized enterprise mobile APK distribution and version management portal engineered for nationwide POS terminals and Android agent banking devices. Enforces binary integrity verification, mandatory security patch rollouts, device telemetry, and resumable low-bandwidth downloads.
Fleet Telemetry & Version Distribution Console
Overview of deployed Android versions and terminal update status across regions.
Automated DevSecOps Pipeline
Interactive topology showing continuous integration, security gates, and zero-downtime deployment stages.
Git Push
Protected branch triggers webhook with commit signature verification.
Security Gate
SonarQube SAST analysis and Trivy image scanning for zero-day vulnerabilities.
Docker Build
Multi-stage alpine container compilation producing minimal footprint artifacts.
Cluster Deploy
Zero-downtime rolling canary update with automated reverse-proxy health checks.
Health Telemetry
Prometheus metrics collection, SSL audit check, and real-time alert hooks active.
commit 7f4a218d (HEAD -> main, origin/main) | Author: Md. Kamrul Hasan <devops@mohammadkamrulhasan.com>
gpg: Signature made using RSA key ID 9F84B7E1 - Good signature verified.
Automated CI hook triggered: 18 unit tests passed, zero regressions detected. Proceeding to SAST security gate...
# Connected to Agent Banking Secure Mobile APK Delivery Portal Production Telemetry Node.
# Type or select a command above to query live infrastructure metrics.
$ devsecops-cli inspect --target="agent-banking-secure-mobile-apk-delivery-portal"
[PASS] Production Image: agent-banking-secure-mobile-apk-delivery-portal:latest (sha256:7e98a1f4b0)
[PASS] Zero Critical CVEs detected | TLS 1.3 Strict Mode Enforced
[INFO] Target Outlets/Users: 5,000+ Active
[INFO] Primary Engine: PHP, MySQL, Android Ecosystem, Nginx, Linux, REST API, Cryptographic Hashing
> Ready for instruction...
Measurable Engineering Impact
Quantifiable system metrics, performance gains, and uptime guarantees delivered in production.
Active POS Terminals
Secured and maintained with automated version enforcement.
Binary Integrity
Cryptographic verification stopping counterfeit application installs.
Download Success Rate
Achieved via byte-range resumable chunked distribution on remote 2G/3G.
Critical Patch Rollout
Mandatory security fixes deployed to entire national fleet.
Key Functional Capabilities
Architectural features built to handle scale, security, and automation.
Cryptographic SHA-256 Binary Verification
Every binary upload is cryptographically hashed and verified, preventing unauthorized tampering or rogue sideloading.
Low-Bandwidth Resumable Chunked Delivery
HTTP Byte-Range chunked distribution enabling remote rural POS terminals to resume interrupted downloads seamlessly.
Mandatory In-App Version Enforcement
Restricted API handshake that blocks outdated POS terminals from processing transactions until mandatory security patches are applied.
Fleet Distribution Telemetry & Geo-Mapping
Live visual dashboard displaying active terminal counts, OS versions, download telemetry, and terminal hardware health.
Tactical Engineering Deep-Dive
Problem statement analysis and DevSecOps architectural resolution.
The Challenge
Thousands of agent banking POS devices deployed across remote villages experienced high download failure rates over intermittent 2G/3G mobile networks. More critically, the bank needed absolute assurance that devices only ran cryptographically verified, untampered banking application binaries.
Tactical Solution
Designed a secure distribution gateway with SHA-256 binary checksum validation, chunked HTTP range-request resumable downloads, mandatory in-app version handshake API, and real-time fleet analytics tracking active APK releases across all banking terminals.
Key Validated Milestones & Outcomes
System Architecture Specifications
Granular technical specification across delivery pipelines, infrastructure, and governance.
CI/CD Pipeline
- • Automated release pipeline verifying APK signing certificate fingerprint before public availability
- • Automated changelog generation and notification dispatch to field support teams
- • Byte-level integrity check on CDN edge nodes
Infrastructure
- • Nginx tuned for high-volume static binary streaming with HTTP/2 and chunked encoding
- • Direct storage backend with strict access controls preventing direct directory listing
- • RESTful API service for POS terminal client handshake and version verification
Security & Controls
- • Strict SHA-256 payload verification before saving and distributing APKs
- • IP-whitelisted administrative publishing portal with multi-factor authentication
- • End-to-end encrypted transport over TLS 1.3
Project Intelligence
SEC-READYLive Production Target
mohammadkamrulhasan.com/projects/agent-banking-secure-mobile-apk-delivery-portalRepository & Source
View Source CodeOrganization / Client
Agrani DOER Agent Banking Security Infrastructure
Engineering Role
Mobile DevOps & Security Delivery Lead
Lifecycle / Duration
12 Months
Tooling & Technologies
Operational Status
Related Tactical Deployments
OpenStack & Proxmox Private Cloud Virtualization
An enterprise-scale hyperconverged private cloud virtualization platform combining Proxmox VE cluster virtualization and OpenStack IaaS automation. Designed and deployed the multi-node infrastructure providing on-demand compute, isolated software-defined networking, and high-availability Ceph distributed storage.
TADA Automated Expense & Travel Management
A digitized, automated Travel Allowance & Daily Allowance (TADA) expense disbursement system developed for Agrani DOER Agent Banking. Transforms complex, multi-tiered paper reimbursement submissions into a fast, transparent digital workflow with automated policy compliance checks.
Enterprise Job Application & Recruitment Portal
A resilient, high-volume applicant tracking and recruitment portal designed to manage nationwide hiring campaigns for Agrani DOER Agent Banking. Features structured multi-stage application forms, automated resume parsing, criterion-based shortlisting, and automated exam admit card generation.