Motorcycling
Hasan Siddiqui
Senior Software Engineer
Erlangen
Work Preference
Summary
Skilled software developer with solid experience in .NET technologies. Adept at leveraging expertise in C#, .NET 8 to build robust applications. Strong focus on team collaboration, driving projects to successful completion under changing requirements. Known for delivering high-quality results and fostering a cooperative work environment.
Overview
14
14
years of professional experience
5
5
Certifications
2
2
Languages
Work History
Lead Software Engineer
GlobalLogic
05.2024 - 07.2025
- Designed GraphQL/AWS AppSync as BFF from scratch, reduced API over-fetching query batching.
- Added new GraphQL subscriptions for real-time status updates on mobile platforms.
- Added support for multimedia visit notes, enabling offline-first auto sync architecture using local SQLite caching.
- Refactored EVV workflows and implemented real-time two-way caregiver chat and custom scheduling using SignalR.
- Migrated business-critical Silverlight business application to Angular using TypeScript.
- Diagnosed and resolved race conditions in background worker services, refactored code as per Clean Code principles.
- Designed, coded, tested, debugged and documented programs using agile development practices.
- Mentored junior developers, sharing knowledge of best practices in .NET development and full-stack technologies.
Senior Staff Software Engineer
IBM
04.2022 - 05.2024
- Led & optimised distributed microservices using .NET 6, AWS Lambda, SQS, and RabbitMQ and improved AWS Lambda performance through asynchronous calls and reserved concurrency.
- Identified and resolved HL7 v2 message formatting issues, ensuring accurate data exchange across clinical systems.
- Implemented TDD with xUnit, validating critical workflows and delivering highly reliable & resistant (Polly) microservices.
- Modernised legacy desktop applications using Roslyn metaprogramming, adding multilingual support.
- Migrated MassTransit to the new API and translated events to Hangfire jobs.
- Integrated API endpoints from various third-party services for improved functionality and feature-rich applications in .NET.
- Optimised application responsiveness with efficient memory management techniques.
Senior Software Engineer
Wolters Kluwer
03.2021 - 04.2022
- Integrated PCI-compliant payment processing with CyberSource Flex Microform by tokenising sensitive data.
- Improved JWT-based authentication by implementing refresh token mechanisms to strengthen security.
- Designed reusable .NET plugins that enhanced modularity by encapsulating common functionalities.
- Delivered front-end systems using React + Redux, improving user interaction and performance.
- Diagnosed deadlock in a multi-threaded block and resolved it.
- Wrote unit tests using xUnit, Jasmine.
Application Development Specialist
Accenture
12.2016 - 03.2021
- A database used by the Police Service to record and manage crime-related information.
- Led the migration of a 30-year-old legacy application to Azure hybrid cloud, minimising downtime and ensuring compliance.
- Designed a GDPR-compliant data masking solution using Azure, capable of processing multi-format files up to 10MB.
- Scaled the solution to handle 1M SQL records and 100K Excel rows, applying data classification, encryption, and masking both at rest and in transit.
- Diagnosed and fixed a persistent memory leak in legacy COM+ components using profiling tools.
- Automated user access synchronisation between Windows AD and SAP BI, improving workflow efficiency for 40K users.
- Implemented OWASP-compliant security standards using DAST/SAST tools, eliminating XSS and injection vulnerabilities.
IT Consultant
Metasys Software
07.2014 - 08.2016
- The platform delivers reliable, efficient, and affordable embroidery digitizing solutions worldwide, specializing in production digitizing, vector redrawing, and color separations.
- Worked as a Full-Stack C# .NET (jQuery, Bootstrap) developer.
Software Engineer
ITGurus Software
06.2011 - 06.2014
- The platform helps businesses of all sizes streamline HR processes, efficiently manage employees, and improve productivity, compliance, and overall organizational efficiency.
- Worked as a Full-Stack C# .NET (jQuery, HTML5, CSS3) developer.
Education
Master of Computer Applications -
Sikkim Manipal University
01.2020
Bachelor of Computer Science - undefined
University of Mumbai
01.2010
Skills
C#
Certification
Microsoft, Azure Solutions Architect Expert
Software
Running
Coding
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Languages
English
Advanced (C1)
German
Elementary (A2)
Hindi
Bilingual or Proficient (C2)
Timeline
Lead Software Engineer
GlobalLogic
05.2024 - 07.2025
Senior Staff Software Engineer
IBM
04.2022 - 05.2024
Senior Software Engineer
Wolters Kluwer
03.2021 - 04.2022
Application Development Specialist
Accenture
12.2016 - 03.2021
IT Consultant
Metasys Software
07.2014 - 08.2016
Software Engineer
ITGurus Software
06.2011 - 06.2014
Bachelor of Computer Science - undefined
University of Mumbai
Master of Computer Applications -
Sikkim Manipal University