updated readme

Author: towfiq-bK

README.md

@@ -1,22 +1,108 @@
-# Portfolio
-Download portfolio : [Towfiqul Islam CV](Towfiqul_Islam.pdf)
+# Towfiqul Islam
+## Senior Software Engineer
 
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+📧 [email protected] | 📱 +8801823923023 | 🌐 [Portfolio](https://laziestcoder.github.io) | 📍 Bangladesh
 
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+---
 
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+### Professional Summary
+Senior Software Engineer with 4.5+ years of experience in developing enterprise-level applications, specializing in Java/Spring Boot, Blockchain, and IoT solutions. Proven track record in remote collaboration with international teams and delivering high-impact projects for Swiss and Bangladesh-based companies. Demonstrated expertise in financial technology, blockchain implementation, and IoT solutions.
 
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+---
 
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+### Technical Skills
 
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+**Core Technologies**
+- Languages: Java (Spring Boot, Camel), JavaScript
+- Databases: PostgreSQL, MySQL, Oracle, TimescaleDB, Cassandra
+- Cloud & DevOps: AWS, Azure, Docker, Jenkins, CI/CD
 
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+**Specialized Skills**
+- Blockchain: Web3J, Smart Contracts
+- IoT: ThingsBoard, MQTT, CoAP, SNMP
+- Security: OAuth2, KeyCloak
+- Infrastructure: NGINX, Tomcat, GlassFish
 
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+**Development Tools & Practices**
+- Testing: JUnit, Rest Assured, K6
+- Version Control: Git
+- Methodologies: Agile/Scrum
+- API Development: REST, WebSocket
 
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+---
 
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+### Professional Experience
+
+**Senior Software Engineer** _(Remote)_  
+Exabyting | May 2024 - Present  
+_Currently advancing enterprise solutions with focus on scalable architecture and innovative technologies_
+
+**Software Engineer** _(Remote)_  
+SELISE, Zürich, Switzerland | Nov 2021 - Apr 2024
+- Led development of blockchain-based supply chain solutions for Swiss clients
+- Engineered high-performance software solutions with 20%+ efficiency improvements
+- Implemented secure transaction systems using blockchain technology
+- Collaborated with international teams in an agile environment
+- Maintained high code quality through comprehensive testing and reviews
+
+**Software Engineer** _(Remote)_  
+Exabyting, Dhaka, Bangladesh | Dec 2019 - Nov 2021
+- Spearheaded development of government and private sector web applications
+- Led a 3-member team, ensuring consistent on-time delivery
+- Collaborated with bKash Limited's Solution Engineering Team
+- Implemented clean coding practices and design patterns
+- Managed complete software development lifecycle in Agile environment
+
+---
+
+### Key Projects
+
+**Urstamm - Digital Proof of Origin Platform** _(Oct 2023 - Apr 2024)_  
+Swiss Digital Solution Company
+- Achieved 20% performance boost through query optimization
+- Implemented blockchain for secure data storage
+- Developed batch processing pipeline for 0.5GB legacy data
+- Created intuitive supply chain visualization tools
+- Tech Stack: Java 11, Spring Boot, Web3J, PostgreSQL, Spring Batch, JHipster
+
+**Tesenso Middleware - IoT Platform** _(Jun 2022 - Dec 2023)_  
+Tesenso
+- Extended ThingsBoard with advanced features and integrations
+- Implemented multi-tenant IoT solution handling millions of data points
+- Developed custom rule nodes for MBUS, SOAP, and Loriot
+- Engineered real-time data processing with WebSocket
+- Tech Stack: Java, Spring Boot, PostgreSQL, TimescaleDB, Redis, Angular
+
+**MULTIBANK - Financial Services Platform**  
+bKash Limited
+- Implemented secure SFTP communication channels
+- Developed async email notification system
+- Created configurable maker-checker approval workflow
+- Tech Stack: Java (Spring Boot), MySQL, Spring Integration, JQuery
+
+---
+
+### Open Source Contribution
+- **ThingsBoard**: Contributed to core platform development
+- Pull Request: [#6614](https://github.com/thingsboard/thingsboard)
+
+---
+
+### Education
+**Bachelor of Science in Computer Science and Engineering**  
+International Islamic University Chittagong  
+2014 - 2019
+
+---
+
+### Languages
+- English: Professional Working Proficiency
+- Bengali: Native
+
+---
+
+### Additional Information
+- Remote Work Experience: 4+ years with international teams
+- Team Leadership: Led multiple 3-5 member teams
+- Project Management: Agile/Scrum methodology
+- Client Communication: Direct interaction with international clients