Hamza Sohail-Software Developer
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Experience
Software Developer
WaslSign
- Designed and implemented the system architecture for scalable document workflows, improving stability and performance.
- Optimized the login flow with TOTP-based MFA, reducing complexity and login time by 35%.
- Built secure backend APIs for document upload, signing, and management.
- Developed encrypted file handling with AWS S3 pre-signed URLs, ensuring GDPR-compliant data protection.
- Implemented JWT-based role authentication, strengthening access control and overall platform security and reducing code and database complexity.
- Optimized database queries and caching using ORM, reducing API response time by 40%.
- Integrated real-time webhook updates, enhancing workflow transparency and user experience.
Software Engineer
PAYSYS LABS Pvt Ltd
- Designed and implemented POS and QR Soundbox payment systems, streamlining the full transaction lifecycle.
- Built Raast One Link modules in line with State Bank of Pakistan compliance, improving merchant onboarding efficiency.
- Developed static QR generation and real-time MQTT communication, enhancing transaction reliability and device sync.
- Implemented Maker-Checker-Approver workflows using Flowable BPMN and Camunda, reducing approval delays by 30%.
- Optimized PostgreSQL queries and indexing, improving transaction performance and scalability by 40%.
- Fixed security bug making the application secure by 30%.
- Collaborated with QA and DevOps teams to ensure secure API performance.
Software Engineer
iPath Pvt Ltd
- Developed ReconX Reconciliation Software using Spring Boot for transaction matching across MasterCard, PayPal, and Stripe, improving accuracy and automation.
- Built and integrated RESTful APIs for third-party payment services, enabling seamless data exchange and reconciliation.
- Implemented Jasper Reports for advanced financial insights reducing code complexity.
- Secured traffic via API Gateway and introduced licensing services, ensuring controlled API usage and access.
- Optimized SQL queries and indexing and code perfomance, boosting processing speed for high-volume financial data by 35%.
- Automated data parsing and reconciliation for multiple file formats, reducing manual effort and processing time.
Java Intern
IPath Pvt Ltd
- Strengthened core Java and OOP fundamentals, building a solid foundation for backend development.
- Developed RESTful APIs with Spring Boot, improving understanding of scalable service design.
- Optimized PostgreSQL queries, enhancing database efficiency and application performance.
- Built a custom API mocking tool (similar to Mockoon) with extended functionality for realistic backend simulation.
- Mocked complex transaction APIs, ensuring accurate test coverage and validation of business logic.
- Deployed and maintained Java web applications on Apache Tomcat, gaining experience in deployment and lifecycle management.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology and Banking and Finance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Business Intelligence, and Quality Assurance.
Summary
I am a software developer with a passion for creating efficient and innovative solutions. With a deep fascination for technology and a drive to create innovative solutions, I am dedicated to honing my skills and expanding my knowledge in the field I am eager to contribute my creativity and problem-solving abilities to build software that enhances user experiences.
Languages
Education
Tu Dortmund
Masters In Data Science · Information and Communication Technologies · Dortmund, Germany
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Hamza is based in Bochum, Germany.
Hamza speaks the following languages: Urdu (Native), English (Advanced), German (Elementary).
Hamza has at least 3 years of experience. During this time, Hamza has worked in at least 3 different roles and for 4 different companies. The average length of individual experience is 1 year and 8 months. Note that Hamza may not have shared all experience and actually has more experience.
Based on recent experience, Hamza would be well-suited for roles such as: Software Developer, Software Engineer, Java Intern.
Hamza's most recent position is Software Developer at WaslSign.
In recent years, Hamza has worked for WaslSign, PAYSYS LABS Pvt Ltd, iPath Pvt Ltd, and IPath Pvt Ltd.
Hamza is most experienced in industries like Information Technology and Banking and Finance.
Hamza is most experienced in business areas like Information Technology, Product Development, and Business Intelligence. Hamza also has some experience in Quality Assurance.
Hamza holds a Master in Information and Communication Technologies from Tu Dortmund.
The availability of Hamza needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 25 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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