OCJP Certified Java Architect | Spring Boot | Microservices | AWS | Kafka | Camunda | 13+ Years Experience
With 13+ years of professional experience in designing, developing, and deploying enterprise-grade applications, I help businesses build scalable, secure, and high-performance cloud-native solutions.
My expertise spans Java, Spring Boot, Microservices Architecture, AWS Cloud, Kafka, Redis, Docker, Kubernetes, CI/CD, OAuth2, Keycloak, JWT, and Camunda BPM.
Key Highlights:
✔ OCJP Certified Java Professional
✔ 12+ Years of Software Development Experience
✔ Microservices & Cloud-Native Architecture Specialist
✔ Banking & FinTech Domain Expertise
✔ RESTful APIs, Event-Driven Systems, and Distributed Architecture
✔ AWS Cloud Deployment & DevOps Automation
✔ Security Implementation with OAuth2, JWT, Keycloak, LDAP, and Okta
Recent Accomplishments:
✅ Designed and implemented cloud-native microservices using Java, Spring Boot, Spring Cloud, Docker, and Kubernetes.
✅ Built FinTech and Banking solutions integrating payment gateways and remittance platforms, including Stripe, RIA, and Instant Cash Exchange House APIs.
✅ Developed high-performance event-driven architectures using Kafka and Redis for real-time processing and scalability.
✅ Automated deployment pipelines using Jenkins, Docker, Kubernetes, SonarQube, and Git-based CI/CD workflows.
✅ Implemented workflow orchestration and business process automation using Camunda BPM.
AI-Assisted Development:
I effectively leverage AI tools such as ChatGPT and GitHub Copilot to accelerate development productivity by 60–80% through:
• Business rule analysis and API design
• Schema and ORM modeling
• Rapid endpoint generation
• Code completion and refactoring
• Automated code reviews and quality improvements
• Technical documentation generation
Core Technologies:
• Java, Spring Boot, Spring Framework, Spring Cloud, Hibernate, JPA, Camunda, GraphQL, WebSockets
• Kafka, RabbitMQ, Redis, Docker, Kubernetes
• MySQL, Oracle, PostgreSQL, MongoDB, Elasticsearch
• AWS (EC2, ECS, RDS, S3, IAM, SQS)
• OAuth2, JWT, Keycloak, LDAP, Okta, Spring Security
• React, Angular, TypeScript, JavaScript
• Jenkins, Git, Maven, SonarQube, Jira
I am passionate about building reliable, scalable, and secure enterprise solutions that deliver measurable business value.
Let's discuss how I can help your team accelerate development, modernize architecture, and successfully deliver high-quality software solutions.
Apache Kafka
Apache Maven
API Development
API Integration
Spring Boot
Java
Docker
RESTful API
Spring Security
Hibernate
Microservice
Spring Cloud
Kubernetes
ChatGPT
Redis
OAuth
CI/CD
Jenkins
AWS CodeBuild
Mahadi H.
Dhaka, Bangladesh
$40/hr
4.9
29 jobs
As a top-rated JasperReports expert with a 100% job success rate, I specialize in delivering advanced, tailored reporting solutions using JasperReports, Jaspersoft Studio, iReport, and JasperServer. My extensive experience spans across various industries, including corporate groups, education, and healthcare, where I’ve designed and implemented reports that meet complex business needs.
JasperReports Expertise:
• Report Design & Development: Expert in creating detailed reports with subreports, dynamic parameters, charts, graphics, QR codes, barcodes, and custom fonts.
• Data Source Integration: Skilled in connecting reports to a wide range of data sources including PostgreSQL, MySQL, MS SQL Server, MS Access, CSV, Excel, JSON, and JavaBeans.
• JasperServer Management: Proficient in deploying and managing JasperServer, including defining reports, managing subreport calls, and optimizing server performance.
• Industry-Specific Solutions: Proven track record in developing bespoke reporting solutions for sectors such as corporate conglomerates, education, and healthcare.
Reporting Frameworks:
• JasperReports: Jaspersoft Studio, JasperReports Server, iReport
Oracle Database
PostgreSQL
JasperReports
Microsoft SQL Server
MySQL
Database Architecture
Database
Jasper
Business Intelligence
Jaspersoft Studio
iReport
SQL Programming
Report
BigQuery
Md. Kamrul F.
Dhaka, Bangladesh
$20/hr
4.6
3 jobs
I’m an Oracle Certified Professional (OCP) with 12+ years of experience building and leading application delivery using Oracle Database, Oracle APEX, PL/SQL, and Java. I help clients design, build, optimize, and integrate business-critical systems—especially in Banking/FinTech, ERP, and Budgeting/Forecasting.
What I can do for you:
• Oracle APEX application development (Forms, Reports, Dashboards, Interactive Grid, Validations, Dynamic Forms, Dynamic Content, Workflow Management, Task Management, Integration with External Service)
• PL/SQL & SQL development + performance tuning (slow pages/reports, query optimization, indexing)
• ORDS / RESTful services (build and consume REST APIs; integrate with external systems)
• System integrations via REST/SOAP APIs
• Reporting: Jasper Reports, Oracle Reports, BI Publisher
• Server & deployment setup: ORDS with Tomcat, and Apache/Nginx load balancing
• Integration experience includes: Google Maps integration in APEX, Open Street Map Integration, Biometric authentication integration in APEX, Camera Integration
I work in a structured way: scope → quick prototype → iteration → delivery + handover.
If you already have an APEX app, share the page/report and issue (error/slow/wrong output)—I’ll propose the best fix plan quickly.
JavaScript
Java
Oracle Forms
Oracle APEX
Oracle Reports
Apache Tomcat
XML
JasperReports
jQuery
AJAX
HTML
RESTful API
JSON
Business Intelligence
API Integration
Supabase
Spring Boot
Elasticsearch
ETL
Logstash
Md Azizur R.
Dhaka, Bangladesh
$75/hr
4.9
35 jobs
I help organizations become audit-ready, secure, and compliant - without overengineering or slowing down business.
With 17+ years in cybersecurity, I operate as a Fractional CISO (vCISO), bridging technical execution, risk governance, and compliance across fast-growing SaaS companies, fintech, and enterprise environments.
I specialize in building end-to-end security programs aligned with:
ISO/IEC 27001
SOC 2
NIS2 Directive
HIPAA
🎯 What I Deliver
🔐 Compliance & Audit Readiness
SOC 2 Type I & II end-to-end readiness
ISO 27001 ISMS design, implementation & audit support
NIS2 gap assessment & full implementation roadmap
HIPAA compliance for SaaS, VoIP, and cloud platforms
🛡️ Security Leadership (vCISO)
Security strategy aligned with business goals
Risk management (NIST CSF, CIS Controls)
Board-level reporting (Risk vs Cost vs Impact)
Vendor & third-party risk management
⚙️ Technical & Cloud Security
AWS / GCP / Azure security architecture & hardening
DevSecOps & Secure SDLC (SAST, DAST, IAST integration)
Application & API security testing
Identity & Access Management (IAM / PAM)
🔍 Offensive Security & Assurance
Penetration testing (Web, mobile and Network)
Red team simulation & threat modeling
Secure code review & vulnerability management
🧠 Why Clients Hire Me
I don’t just deliver policies - I deliver working security programs
I translate technical risk into business decisions
I align compliance with real-world architecture (AWS, SaaS, DevOps)
I help you pass audits AND actually be secure
🏆 Credentials
CISM • CISA • CEH • ECSA • LPT (Master)
ISO 27001 Lead Implementer (BSI)
AWS Security Specialty • Azure Security (AZ-500)
💡 Engagement Model
Fractional CISO (ongoing advisory)
Compliance programs (SOC 2 / ISO 27001 / NIS2 / HIPAA)
Security assessments & remediation
Audit readiness & evidence preparation
🚀 Let’s Talk
If you're preparing for an audit, scaling securely, or need a CISO-level partner without full-time cost, I can help you get there efficiently.
Vulnerability Assessment
Database Security
Network Security
Cybersecurity Management
Application Security
Penetration Testing
Information Security
Source Code Scanning
Security Testing
Security Policies & Procedures Documentation
Security Engineering
ISO 27001
Cloud Security
Security Analysis
Secure SDLC
Reduan Islam B.
Dhaka, Bangladesh
$25/hr
5.0
5 jobs
I'm a cybersecurity professional with hands-on SOC operations experience across Microsoft 365 and Azure environments. I help businesses detect, triage, and respond to security threats every day — from suspicious sign-ins and impossible-travel detections to phishing analysis and endpoint incident response.
WHAT I DO:
• SOC L1/L2 triage — review SIEM and EDR alerts, classify allow / watch / deny, escalate to L2/L3 with full evidence and timeline
• Incident investigation — 50+ incidents closed end-to-end across endpoint, identity, and email vectors
• Multi-tenant operations — administered security controls across 25+ Microsoft 365 client environments
• Identity protection — Entra ID, Conditional Access, Privileged Identity Management (PIM), MFA, suspicious sign-in detection
• Email security — phishing analysis, Safe Links / Safe Attachments, SPF / DKIM / DMARC, header analysis with PhishTool
• Detection engineering — custom Wazuh rules, Microsoft Sentinel analytics, MITRE ATT&CK mapping, Sigma rules
TOOLS I WORK WITH:
Microsoft Sentinel • Microsoft Defender XDR • Defender for Endpoint • Wazuh • Splunk • The Hive • Microsoft Intune • Microsoft Entra ID • Microsoft Purview • Autopsy • Volatility • FTK Imager • Burp Suite • Nmap • Metasploit
CERTIFICATIONS:
• Microsoft AZ-500 — Azure Security Engineer Associate
• Microsoft SC-200 — Security Operations Analyst Associate
• Microsoft AZ-900 — Azure Fundamentals
• Blue Team Level 1 (BTL1) — Security Blue Team
• Certified Cyber Defender Level 2 (CCDL2)
• Security Analyst Level 1 (SAL1)
• CompTIA Security+
• Junior Penetration Tester (PT1)
IN PROGRESS: HTB CPTS • CompTIA CySA+ • CompTIA PenTest+ • Certified Kubernetes Administrator (CKA)
WHY CLIENTS HIRE ME:
• Honest classification — I don't false-positive everything to look busy, and I don't miss real threats
• Documentation discipline — every ticket has complete evidence, timeline, and remediation context
• Shift coverage — comfortable with US business hours from Bangladesh (GMT+6)
• Communication — clear written English, clean shift handovers, structured incident reports
AVAILABLE: 30+ hours per week, starting immediately. Open to short paid trial tasks so you can verify the technical fit before committing.
Penetration Testing
Digital Forensics
Database Security
Ethical Hacking
Security Operation Center
WordPress Malware Removal
WordPress Security
Website Security
Email Security
Hosting Setup
Cloud Security
Cloud Architecture
Arefin I.
Dhaka, Bangladesh
$30/hr
5.0
51 jobs
Technical Security Expertise:
- Vulnerability Assessment and Penetration Testing (Nessus, OpenVAS, Acunetix)
- Security Operations (Wazuh XDR & SIEM, AzureAD PAM & DLP, Darktrace NDR & EDR)
- FortiADC Load balancer with WAF & Barracuda Email Security Gateway.
- Network Security (FortiGate Firewall, Cisco FTD)
- Backup and Recovery (Veeam, Azure Site Recovery, Symantec Backup Exec, DPM)
Cloud Expertise:
- Architected and supported secure, scalable cloud solutions across AWS and Oracle Cloud Infrastructure (OCI) using core compute, networking, storage, and IAM services.
- Designed and implemented multicloud architectures (AWS–OCI) with secure VPN/IPSec connectivity, workload optimization, and high availability.
- Applied cloud security best practices, including IAM least privilege, network segmentation, encryption, logging, and compliance aligned with CIS benchmarks.
- Optimized performance, availability, and cost through capacity planning, monitoring, automation (IaC concepts), and cloud best-practice frameworks.
System Administration:
- Active Directory, Group Policy, Exchange Hybrid (On-Prem & O365)
- VMware VCenter, Citrix XenDesktop, Postfix Email Gateway, Squid Proxy
- SCCM Auto push installation & MDT (Microsoft Deployment Toolkit)
Automation and Tools:
- Powershell, Scripting (Python), Docker (Guacamole, BookStack)
- JIRA, Freshdesk Ticketing System, RD Web for remote platform
Soft Skills:
- Leadership and Team Management
- Meticulous Reporting and Documentation
- Cross-functional Collaboration
Network Administration
Microsoft Outlook
Citrix Hypervisor
Microsoft Azure
VMware ESX Server
Windows Server
Office 365
System Administration
Microsoft Exchange Server
Linux System Administration
Remote IT Management
Helpdesk
Cisco Certified Network Associate
Microsoft SCCM
Virtual Private Server
Technical Support
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