MD Mahmudul Hasan Rudra
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Technical Support Specialist with 4+ years of experience delivering enterprise technical support, product support, and IT infrastructure across SaaS, ISP, and corporate environments. Supporting 2,800+ enterprise customers and handling ~90 tickets daily.
Bridging Support, Infrastructure & Product Development
Technical Support Specialist with 4+ years of experience delivering enterprise technical support, product support, and IT infrastructure services across SaaS, ISP, and corporate environments. Currently supporting 2,800+ enterprise customers and handling approximately 90 customer tickets, calls, and technical requests daily.
Experienced in troubleshooting enterprise software, reproducing software defects, performing REST API testing, validating production releases, analyzing logs, configuring Linux servers, supporting Windows Server environments, and maintaining enterprise networking infrastructure. Hands-on experience with Docker, Docker Compose, Ubuntu Linux, PostgreSQL, Redis, Nginx, Cloudflare, Grafana, VPS deployment, MikroTik, Cisco, Juniper, Active Directory, VMware, Hyper-V, and enterprise network administration.
In addition to enterprise support, I actively design and develop SaaS products including NetFlow (ISP Billing Platform), Verdiq (Legal SaaS Platform), Accounting Platform, and multiple Android applications using modern technologies including ASP.NET Core, Next.js, Kotlin, PostgreSQL, and Docker. Recognized for strong analytical thinking, customer communication, rapid problem-solving, cross-functional collaboration, and the ability to troubleshoot complex technical issues from infrastructure to application level.
Currently Building
Currently Learning & Mastering
Professional Career Timeline
4+ years of dedicated enterprise technical support, product support, IT infrastructure engineering, and software development
Building NetFlow
NowA modern ISP Billing and Management SaaS platform built using ASP.NET Core, Next.js, PostgreSQL, Redis, Docker, and MikroTik API. Features include ISP Billing Management, CRM, ERP, HRM, Accounting, Customer Portal, Reseller Management, MikroTik & OLT Integration, Docker Deployment, and Cloudflare-protected VPS hosting.
SoftifyBD
2025 – PresentDelivering high-tier enterprise technical support for 2,800+ enterprise customers across SaaS applications, ISP solutions, CRM, ERP, and infrastructure platforms. Managing PostgreSQL query performance, API diagnostic tools, server maintenance, bug reproduction, REST API testing, production release validation, and resolving critical client software issues under strict SLA deadlines.
LandAid Limited
Jan 2024 – Dec 2024Provided enterprise IT infrastructure, networking, and end-user support for a corporate environment, ensuring high availability, security, and operational efficiency across office systems and network services.
- Delivered IT support for 50+ employees, resolving hardware, software, network, and infrastructure issues.
- Installed, configured, and administered Windows Server environments for business operations.
- Managed Active Directory for user account creation, permission management, password policies, and access control.
- Configured and maintained MikroTik, Cisco, and Juniper networking devices.
- Managed enterprise network infrastructure including DNS, DHCP, VPN, VLAN, routing, switching, and firewall configuration.
- Installed and maintained VMware and Hyper-V virtualization environments.
- Managed enterprise storage systems (NAS) and performed backup and recovery operations.
- Installed, configured, and maintained IP Phone, Biometric Attendance, and CCTV Surveillance systems.
- Performed preventive maintenance to minimize downtime and improve system reliability.
Smarto Technology Limited
Jun 2023 – Dec 2023Provided first-line technical support for office IT infrastructure, end users, and enterprise hardware while assisting with network maintenance and daily IT operations.
- Delivered desktop and technical support for internal users.
- Installed, configured, and upgraded Windows operating systems and software.
- Diagnosed hardware failures and performed repair and replacement of IT equipment.
- Configured and maintained office networking devices.
- Assisted with network troubleshooting and connectivity issues.
- Managed IT assets, preventive maintenance, and equipment documentation.
- Supported office printers, scanners, and peripheral devices.
Featured In-Depth Projects
Technical breakdowns, architecture designs, challenges, and roadmaps of major platforms I've built
NetFlow — ISP Billing & MikroTik Management OS
A complete enterprise Operating System for ISPs to manage subscriber bandwidth, PPPoE/Static IP sessions, automated billing, and MikroTik router APIs in real time.
Verdiq — Legal SaaS Platform for Law Professionals
A comprehensive Legal SaaS Platform designed for law professionals featuring case management, document management, hearing reminders, calendar scheduling, AI-ready architecture, secure authentication, and role-based access control.
Accounting & Financial ERP Platform
Double-entry financial accounting system featuring invoice generation, tax calculations, ledger balances, and audit log tracking for growing business enterprises.
Android Applications & Play Store Suite
Suite of 5+ native Android utilities, productivity tools, and network diagnosis apps built with Kotlin, Jetpack Compose, and modern offline-first MVVM architecture.
Production System Architecture
End-to-end component interaction, microservices structure, API pipelines, and monitoring infrastructure
NetFlow Enterprise System Flow
Next.js Frontend ↔ ASP.NET Core API
MikroTik API Integration Flow
Docker Compose Microservices Structure
Monitoring (Grafana), Logging & Automated Backup
Prometheus & Grafana
Scraping metrics for CPU, RAM, API HTTP status codes, latency distributions, and database connection pool counts.
Structured Serilog Logging
Structured JSON logging with correlation IDs for tracing requests across microservices and debugging L2/L3 issues.
Automated PostgreSQL Backups
Daily automated pg_dump cron scripts compressed, encrypted, and synced offsite to S3 cloud storage for zero data loss.
Categorized Technical Expertise
Comprehensive breakdown of enterprise support, infrastructure, networking, development, and database skills
Infrastructure
Networking
Development
Technical Support
Databases
Monitoring & Tools
Tech Stack Icon Grid
Core platforms and development tools in my everyday workflow
Certifications & Education
Verified technical achievements and continuous learning milestones
CompTIA Network+
Certified knowledge in network architecture, security protocols, OSI model, and troubleshooting.
Google Analytics
Data analysis, web traffic metrics, user conversion tracking, and reporting.
Diploma in CSE
Diploma in Computer Science & Engineering from BACE Institute of Science & Technology. CGPA: 3.79 / 4.00 — Graduated 2023.
Future Certifications
Currently preparing for AWS Solutions Architect & CKA (Certified Kubernetes Administrator).
GitHub & Open Source Activity
Active open-source contributions, repositories, and development metrics
MDMahmudulHasanRudra
github.com/MDMahmudulHasanRudraPinned & Latest Open Source Repos
Weekly Technical Articles & Tutorials
In-depth guides written for recruiters, engineering managers, and DevOps practitioners
Docker for .NET Developers
From zero to production — containerizing ASP.NET Core apps, managing images, volumes, and networking with Docker CLI.
Linux Server Hardening Guide
Secure Ubuntu/Debian servers with UFW, SSH key auth, Fail2Ban, automatic security updates, and auditd logging.
Redis Caching for ASP.NET Core
Implement distributed caching, session storage, and rate limiting with Redis in ASP.NET Core applications.
PostgreSQL Performance Tuning
Optimize slow queries with EXPLAIN ANALYZE, B-Tree/GIN indexes, connection pooling with PgBouncer, and memory tuning.
MikroTik RouterOS API Guide
Programmatically manage RouterOS — queues, PPPoE, firewall filters, and interface monitoring via API socket communication.
Postman for API Debugging & Testing
Collection-based API testing, environment variables, pre-request scripts, chaining requests, and automated test suites.
L2/L3 Technical Support Best Practices
SLA management, ticket triage, escalation workflows, root cause analysis, and customer communication for SaaS platforms.
Systematic Bug Investigation Guide
Reproduce, isolate, diagnose, and resolve software bugs using logs, debuggers, monitoring data, and structured analysis.
Cloudflare WAF & CDN Setup
Configure Cloudflare as a reverse proxy, DDoS protection, SSL/TLS, caching rules, and firewall rule engine.
Grafana & Prometheus Monitoring Stack
Deploy and configure Grafana with Prometheus for server metrics, API monitoring, and custom dashboard creation.
Windows Server Administration
Active Directory, Group Policy, DNS, DHCP, IIS management, and PowerShell automation for enterprise environments.
Active Directory & Entra ID Sync
On-prem AD with Azure Entra ID hybrid setup, user provisioning, conditional access policies, and SSO configuration.
Docker Compose for Microservices
Orchestrate multi-container apps with Docker Compose — networking, volumes, environment variables, and health checks.
Next.js Production Deployment
Deploy Next.js on Vercel or custom Linux servers with PM2, standalone output, and Cloudflare CDN optimization.
ASP.NET Core Web API Best Practices
RESTful API design, middleware pipeline, dependency injection, JWT authentication, Swagger docs, and error handling.
JWT Authentication & Authorization
Implement JWT-based auth with refresh tokens, role-based access control, and secure HTTP-only cookie storage.
Full-Stack Production Deployment
End-to-end deployment of ASP.NET Core + Next.js apps with Nginx reverse proxy, SSL, and PostgreSQL on a VPS.
Application Monitoring & Alerting
Set up structured logging with Serilog, health checks, uptime monitoring with Uptime Kuma, and Slack/Email alerts.
GitHub Actions CI/CD Pipeline
Automated build, test, and deploy pipelines for ASP.NET Core and Next.js using GitHub Actions and Docker registries.
Enterprise Networking Fundamentals
VLANs, BGP, OSPF, firewall policies, and network segmentation for corporate and ISP infrastructure environments.
20 technical articles — new articles added weekly
Resume Download & Preview Options
Access both ATS-optimized and Visual Designer versions of my professional resume
ATS-Friendly Resume
Cleanly structured plain text & markdown format designed to rank top in automated applicant tracking systems.
Designer Visual Resume
Polished PDF format tailored for hiring managers, recruiters, and engineering team leads.
Europass Resume (EU Format)
European Union standardized CV format — ideal for EU-based job applications and relocation opportunities.
All resume versions are regularly updated. Last updated: July 2026. Open for remote, hybrid, and EU relocation.
Recommendations & Testimonials
Feedback from managers, clients, and technical colleagues
Engineering Manager
"Mahmudul's technical diagnostic skills in L2/L3 support and PostgreSQL backend troubleshooting saved us countess hours. He is exceptionally reliable under pressure."
ISP Operations Client
"His MikroTik API integration and automated bandwidth management system completely streamlined our ISP billing and session management."
Senior DevOps Colleague
"A proactive software engineer who understands both infrastructure networking and modern frontend frameworks like Next.js."
Frequently Asked Questions
Quick answers to common questions about my work and availability
Who are you?
I'm MD Mahmudul Hasan Rudra — a Technical Support Specialist, Product Support Engineer, and IT Infrastructure Engineer with 4+ years of experience delivering enterprise technical support, product support, and IT infrastructure across SaaS, ISP, and corporate environments. Supporting 2,800+ enterprise customers handling ~90 tickets daily.
What technologies do you use?
Linux, Docker, PostgreSQL, ASP.NET Core, Next.js, Kotlin, Redis, MikroTik, Cisco, Juniper, Nginx, Cloudflare, Grafana, Windows Server, Active Directory, VMware, Hyper-V, and more. I work across the full stack — from infrastructure to frontend.
Are you available for relocation?
Yes, I am actively open to relocation opportunities, especially within the European Union. I'm also available for remote and hybrid positions worldwide.
Do you work remotely?
Absolutely. I have extensive experience working remotely with global teams, managing servers, debugging SaaS platforms, and delivering projects across time zones.
Connect & Book a Call
Reach out directly or schedule a technical chat
Schedule a Technical Call
Looking for a Technical Support Specialist, Product Support Engineer, or IT Infrastructure Engineer? Book a 15-30 minute discussion directly on my calendar.