Hi, I'm Sadman Sadaf Islam
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Technical Analyst | Unix Server Administrator | Threat Researcher
Specialized in production support, server administration, and financial systems infrastructure with a core passion to harden all the modern security daily activity over the internet and dark web. I try to hack myself always!
Tech Stack & Expertise
Server & Cloud
Database Management
Development & DevOps
Cybersecurity
Production Support
Tools & Platforms
About Me
A dedicated Technical Support Specialist with expertise in Unix server administration, database management, shell scripting and production support for critical financial systems. Passionate about Penetration Testing, Red-teaming and Malware reverse Engineering. Working in own start-up based on Real Estates, with an evening coffee.
My Journey
Technical Analyst IV – Credit Risk Systems
Sep 2024 - Sep 2025TD Bank
Providing front-line production support for critical banking applications, maintaining seamless operations across complex batch flows and data pipelines. Managing Unix-based server infrastructure and resolving high-impact incidents.
Technical Support Engineer
Oct 2022 - Sep 2024MiPropertyPortal
Administered Unix-based servers and provided technical support for financial and real estate management applications. Led database migrations resulting in 30% performance increase.
Server Support Specialist
Feb 2019 - Sep 2022Leads Corporation Ltd.
Provided production and server support for a large banking institution with heavy transaction processing needs. Improved batch processing accuracy and reduced job failures by 20%.
Advanced Postgraduate Diploma in Cybersecurity
2023George Brown College
Advanced studies in cybersecurity, threat analysis, and security infrastructure.
Bachelor of Science in Computer Science and Engineering
2020East West University
Comprehensive studies in computer science, software engineering, and system design.
Quick Facts
Languages
Interests
📸 Landscape & Astrophotography
🎬 Cinematography & Commercials
💻 Web Application Development
🔒 Unix System Administration
⌨️ Ethical Hacking
Skills & Expertise
A comprehensive overview of my technical capabilities across various domains.
Server & Cloud
Unix/Linux Systems
0%Advanced administration, maintenance, and security hardening.
Cloud Infrastructure (AWS)
0%Architecting scalable and resilient cloud solutions.
Terraform (IaC)
0%Automating infrastructure provisioning and management.
Shell Scripting
0%Creating complex scripts for automation and process optimization.
System Monitoring
0%Real-time performance monitoring with Prometheus & Grafana.
Featured Projects
A showcase of my work across different domains, from blockchain applications to cybersecurity tools
AI Incident Analyser
AI-powered tool for classifying, prioritizing, and suggesting remediation steps for IT incidents in real-time.
AI Mind Wellness
An intelligent mental health platform leveraging AI for emotional analysis, guided therapy sessions, and personalized wellness tracking.
AI Student Learning Portal
An adaptive e-learning platform that uses AI to personalize study paths, track progress, and enhance knowledge retention effectively.
AI Troubleshooter
Virtual AI assistant that analyzes logs and system metrics to detect issues and recommend troubleshooting steps.
App Health Monitor Dashboard
Centralized dashboard for monitoring app uptime, performance metrics, and real-time error tracking across environments.
Blockchain Transaction Network
Decentralized platform for simulating blockchain transactions with live validation and smart contract support.
Construction ERP Dashboard
An enterprise-grade construction management suite tracking budgets, schedules, and on-site resources for optimized project delivery.
Cryptocurrency Portfolio and NFT Dashboard
Interactive dashboard for tracking crypto prices, NFT collections, and portfolio performance in real-time.
CryptoVault Application
A blockchain-secured crypto management tool offering portfolio insights, real-time analytics, and advanced wallet-level protection.
Database Query Analyzer
Automated query optimization and performance analyzer with indexing recommendations and execution plan insights.
Futuristic AI Startup Landing Page
Modern, responsive landing page design tailored for AI startups with animations and interactive components.
Futuristic Server Health Monitoring System
Next-gen monitoring platform with predictive analytics, anomaly detection, and AI-driven performance tuning.
Healthcare Records Portal
A HIPAA-compliant platform for managing patient data, ensuring secure access, efficient workflows, and smart clinical decision support.
Interactive Command Line Terminal
Web-based interactive terminal emulator for executing Linux commands and simulating real-world CLI environments.
IT Helpdesk Ticketing Dashboard
Custom helpdesk solution with ticket tracking, SLA monitoring, and AI-based priority classification.
IT Support Portal
An integrated helpdesk system that automates ticket management, tracks SLA performance, and improves IT service delivery efficiency.
Landlord and Tenant Portal
A secure property management system streamlining rent collection, maintenance tracking, and communication between landlords and tenants.
Logistics Management Dashboard
A real-time logistics intelligence system optimizing fleet operations, shipment tracking, and warehouse performance analytics.
OSCP Journey Tracker Notebook
Personalized study and progress tracking dashboard for OSCP preparation with notes and lab exercise tracking.
Password Strength Analyzer And Generator
Web app that evaluates password strength in real-time and suggests secure, user-friendly alternatives.
Pentesting Engagement Platform
A complete vulnerability assessment tool that manages penetration tests, reports findings, and enhances enterprise security posture.
Phishing Awareness Training App
Educational web app that simulates phishing attacks to train users on recognizing and avoiding threats.
Professional Workflow Automation
An AI-powered platform automating business workflows, reducing manual effort, and boosting organizational productivity and accuracy.
Project Management Dashboard
Task and project management system with Kanban boards, timeline views, and team collaboration features.
Red Team Cyber Attack Map with Telemetry
Visualization dashboard that maps cyber attacks globally in real-time using simulated red team telemetry.
SaaS Admin Dashboard
Admin dashboard template for SaaS platforms with analytics, user management, and billing integrations.
SOC Analyst Simulation Platform
A next-gen cybersecurity lab that simulates real SOC incidents, enabling analysts to detect, respond, and mitigate threats efficiently.
SOC Response Platform
Security operations center platform designed to automate response playbooks, alerts, and incident workflows.
Telemedicine and Clinic Management App
End-to-end healthcare platform enabling remote consultations, appointment scheduling, patient records, and secure telemedicine services.
Template Portfolio Builder
A responsive portfolio generator empowering professionals to design, customize, and deploy stunning websites instantly and seamlessly.
Threat Intelligence Dashboard
Cyber threat intelligence platform with real-time feed integration, attack categorization, and alerting.
Unix Server Optimization Professional App
Lightweight application for automated Unix server tuning, patching, and system optimization at scale.
Vulnerability Scanner Simulator App
Security scanning tool that detects system vulnerabilities, misconfigurations, and outdated dependencies.
Photography & Cinematography
Beyond my technical expertise, I'm passionate about visual storytelling through photography and cinematography. Specializing in landscape, street, aerial, astrophotography, architecture, and portrait work, I combine technical precision with creative vision to capture compelling imagery.
Landscape
Capturing the beauty of natural landscapes
Street
Story-telling through candid urban moments
Architecture
Urban and architectural photography
Aerial
Professional and Commercial Aerials
Astrophotography
Stargazing and celestial captures
Featured Work
Aerial Photography
Sweeping views captured from above, revealing patterns and perspectives unseen from the ground.
Architecture Photography
Precise lines and striking forms that highlight the beauty and symmetry of human-made structures.
Wildlife Photography
Moments of untamed nature, capturing rare expressions of animals in their natural habitats and streets.
Street Photography
Candid glimpses of urban life that preserve authentic human emotion and fleeting city moments.
Landscape Photography
Expansive horizons and natural wonders rendered with vivid light and atmospheric depth.
Portrait Photography
Striking portraits that combine natural expression with carefully crafted lighting and detail.
Professional Experience
My journey through various roles in technology, from enterprise support to building cloud-native infrastructure.
Spearheading the design and implementation of a secure, scalable cloud infrastructure to support a new generation of AI and Cybersecurity software products. Focused on building a resilient foundation for rapid development and future growth.
Key Achievements
- •Architected and deployed a multi-environment cloud infrastructure from the ground up using Infrastructure as Code (IaC) for consistency and reliability.
- •Established a robust CI/CD pipeline, automating the build, testing, and deployment processes to accelerate development cycles.
- •Implemented comprehensive monitoring and alerting systems to ensure high availability and proactive issue resolution.
- •Developed and enforced security best practices, including network security, identity management, and data encryption protocols.
- •Collaborated closely with the development team to optimize application performance and ensure seamless integration with the infrastructure.
Technologies Used
Served as a core member of the CMRT L1/L2 production support team, managing high-impact financial applications in a fast-paced, SLA-driven environment for credit market risk.
Key Achievements
- •Led the resolution of critical incidents including batch failures, data feed delays, and server outages in real-time Unix environments.
- •Provided end-to-end L2 support for the Raptor financial application, overseeing batch executions and troubleshooting data flow issues.
- •Managed batch flow maintenance and scheduling for data pipelines using tools like Kafka, Autosys, and Dash Server.
- •Utilized ServiceNow extensively to manage production incidents according to ITIL processes, driving root cause analysis and permanent fixes.
- •Managed and processed upstream market and trade data feeds (including Sophis), ensuring data quality for downstream risk reporting.
- •Praised by leadership for performance under pressure and exceptional cross-team communication during high-severity incidents.
Technologies Used
Provided Unix server administration and technical support for financial applications, managing both on-premises and cloud-based server infrastructures.
Key Achievements
- •Spearheaded the migration of legacy database systems to scalable platforms, improving data processing capabilities by 30%.
- •Implemented automated monitoring systems, reducing unplanned server and database downtime by 40%.
- •Proactively maintained production, backup, and modeling servers through health checks, log analysis, and resource optimization.
- •Conducted root cause analysis for recurring issues, implementing permanent fixes and process improvements.
- •Restored legacy and archived datasets using IBM TBSM components to support high-priority batch reruns.
- •Managed data ingestion pipelines from external feeds, ensuring accuracy and compliance for business-critical outputs.
Technologies Used
Administered Unix-based servers for a major banking institution, focusing on maintaining high availability and security of transaction processing systems.
Key Achievements
- •Designed and implemented batch processing schedules, improving the efficiency and reliability of transaction processing by 20%.
- •Managed database administration tasks including performance tuning, backup management, and troubleshooting to ensure data integrity.
- •Oversaw data flows from upstream banking systems, performing quality checks and troubleshooting anomalies to ensure data accuracy.
- •Provided expert technical support for server and database-related issues, resolving critical incidents to minimize impact on banking operations.
- •Developed and maintained comprehensive documentation for server environments, ensuring compliance with internal policies.
Technologies Used
Curriculum Vitae
Download my complete CV or view the key highlights of my professional journey
Resume Highlights
Experience
- •Technical Analyst IV at TD Bank
- •Technical Support Engineer
- •Server Support Specialist
- •5+ Years in IT Industry
Education
- •Advanced Postgraduate Diploma in Cybersecurity
- •Bachelor of Science in Computer Science and Engineering
- •Edexcel GCE A-Level
- •Continuous Learning & Development
Achievements
- •99.9% System Uptime Maintained
- •30% Performance Improvement Achieved
- •40% Downtime Reduction
- •20% Job Failure Reduction
Core Competencies
Professional Summary
Technical Support Specialist with hands-on experience in Unix-based server administration, database management, and large-scale transaction processing in financial environments. Currently serving as a Technical Analyst IV at TD Bank, providing front-line production support for critical banking applications.
Adept at delivering top-tier production support for complex server infrastructures and SLA-sensitive batch operations. Proven ability to troubleshoot critical issues under pressure and maintain seamless uptime for banking systems with 99.9% reliability.
Committed to leveraging a broad technical foundation to support and enhance enterprise-level infrastructure, application reliability, and incident response in banking and financial sectors. Also passionate about landscape photography and web development.
Let's Work Together
Ready to bring your next project to life? Let's discuss how we can build something amazing together.
Send me a message
Ready to start a project?
I'm available for freelance work and exciting new opportunities.