Towfiqul Islam

Senior Software Engineer

📧 towfiq.106@gmail.com | 📱 +8801823923023 | 🌐 Portfolio | 📍 Bangladesh

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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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Technical Skills

Core Technologies

• Languages: Java (Spring Boot, Camel), JavaScript
• Databases: PostgreSQL, MySQL, Oracle, TimescaleDB, Cassandra
• Cloud & DevOps: AWS, Azure, Docker, Jenkins, CI/CD

Specialized Skills

• Blockchain: Web3J, Smart Contracts
• IoT: ThingsBoard, MQTT, CoAP, SNMP
• Security: OAuth2, KeyCloak
• Infrastructure: NGINX, Tomcat, GlassFish

Development Tools & Practices

• Testing: JUnit, Rest Assured, K6
• Version Control: Git
• Methodologies: Agile/Scrum
• API Development: REST, WebSocket

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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
• Led a 3-member team, ensuring consistent on-time delivery

Software Engineer (Remote)
Exabyting, Dhaka, Bangladesh | Dec 2019 - Nov 2021

• Spearheaded development of government and private sector web applications
• Collaborated with bKash Limited's Solution Engineering Team
• Implemented clean coding practices and design patterns
• Managed complete software development lifecycle in Agile environment

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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

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Open Source Contribution

• ThingsBoard: Contributed to core platform development
• Pull Request: #6614

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Education

Bachelor of Science in Computer Science and Engineering
International Islamic University Chittagong
2014 - 2019

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Languages

• English: Professional Working Proficiency
• Bengali: Native

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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