I am Sheikh Zeeshan Allauddin, a Senior Software Engineer with 15+ years of experience modernizing mission-critical systems and delivering cloud-native platforms. I specialize in migrating legacy C++, C#, and VB6 applications to .NET 8 microservices on Azure and AWS, with a focus on event-driven architectures, financial integrations, and compliance-ready solutions that boost performance and business outcomes. I thrive in hands-on execution and architectural leadership, blending technical depth with stakeholder collaboration. I’ve led modernization of VB6-based reporting modules, built high-throughput integrations for financial services, and guided teams through CI/CD, cloud-native patterns, and secure, auditable designs that improve reliability and velocity.

Sheikh Zeeshan Allauddin

I am Sheikh Zeeshan Allauddin, a Senior Software Engineer with 15+ years of experience modernizing mission-critical systems and delivering cloud-native platforms. I specialize in migrating legacy C++, C#, and VB6 applications to .NET 8 microservices on Azure and AWS, with a focus on event-driven architectures, financial integrations, and compliance-ready solutions that boost performance and business outcomes. I thrive in hands-on execution and architectural leadership, blending technical depth with stakeholder collaboration. I’ve led modernization of VB6-based reporting modules, built high-throughput integrations for financial services, and guided teams through CI/CD, cloud-native patterns, and secure, auditable designs that improve reliability and velocity.

Available to hire

I am Sheikh Zeeshan Allauddin, a Senior Software Engineer with 15+ years of experience modernizing mission-critical systems and delivering cloud-native platforms. I specialize in migrating legacy C++, C#, and VB6 applications to .NET 8 microservices on Azure and AWS, with a focus on event-driven architectures, financial integrations, and compliance-ready solutions that boost performance and business outcomes.

I thrive in hands-on execution and architectural leadership, blending technical depth with stakeholder collaboration. I’ve led modernization of VB6-based reporting modules, built high-throughput integrations for financial services, and guided teams through CI/CD, cloud-native patterns, and secure, auditable designs that improve reliability and velocity.

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Experience Level

Expert
Expert
Expert
Expert
Intermediate

Work Experience

Senior FullStack Developer (Contract) at Sunmoon Consultancy Limited
May 1, 2024 - Present
Architected and delivered a full overhaul of a legacy payments platform, reducing end-to-end transaction latency by ~70%, stabilizing a crash-prone system, and unlocking new customer acquisition and revenue growth. Engineered multiple event-driven .NET 8 microservices, replacing a monolithic architecture to handle higher volumes cost-effectively. Led modernization of VB6-based reporting modules, embedding reliability practices (correlation IDs, idempotency, retries, structured logging) to ensure auditability and reduce regulatory risk exposure.
Senior Backend & Integration Consultant at b4Value.Net GmbH
June 1, 2021 - May 1, 2024
Spearheaded modernization of VB6-based data transformation components for high-volume e-invoicing, designed secure integration layers for document and data exchange, and established automated unit/integration testing strategies to reduce production regressions and protect SLA commitments.
Principal Software Engineer at Northbay Solutions
December 1, 2018 - June 1, 2021
Architected and extended a legal-tech platform for secure document access and retrieval; delivered scalable backend services and APIs, integrated React frontends with .NET backends, and improved platform responsiveness and customer satisfaction in a revenue-sensitive market.
Principal Software Engineer at Ciklum Private Limited
April 1, 2015 - November 1, 2018
Engineered enterprise-grade integrations using BizTalk and Windows Services; designed high-performance RESTful APIs with ASP.NET Web API, OData, and ElasticSearch; led full SDLC across multiple parallel client engagements and improved reliability of high-traffic applications.
Senior Software Engineer at Inspection Manager Pvt Ltd
July 1, 2014 - April 1, 2015
Joined as a senior software engineer focusing on enterprise applications and ongoing maintenance, contributing to architecture discussions and delivering stable software solutions for the business.
Senior Software Engineer at Stewart Pakistan Ltd
May 1, 2013 - July 1, 2014
Senior Software Engineer contributing to IT infrastructure and marketing-focused software projects, delivering reliable, scalable solutions for high-traffic environments.
Senior Software Engineer at Techliance Pvt Ltd
June 1, 2011 - May 1, 2013
Senior Software Engineer involved in SDLC across multiple client engagements, delivering high-performance APIs and reliable integration solutions while mentoring team members.
Software Engineer at Versonic Pvt Ltd
January 1, 2009 - June 1, 2011
Software Engineer working on core development tasks in early career roles, contributing to enterprise applications and system reliability.

Education

M.Sc. Software Engineering at University of Bradford, UK
January 11, 2030 - January 1, 2007
B.C.S (Honors) Computer Science at Government College University Lahore, Pakistan
January 11, 2030 - January 1, 2005

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Professional Services