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Mark Sandeep User

@marksandeeuser

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Hands-on software engineer with 16+ years of experience architecting, modernizing, and developing web applications

India

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What I'm looking for

I'm looking to architect and build scalable, secure, observable cloud products, especially AI-enabled SaaS, integrations, and high-performance web platforms.

I've architected and modernized web applications for Emeritus, Dell EMC, Tecsys, Akamai, CGI, and IBM across product development, IoT, supply chain, and financial securities.

At Emeritus, I developed and implemented tools to transition and improve their video platform from commercial to open source, resulting in annual savings of $200K. I also built a multi-tenant SaaS platform for AI-based learning features and led video-player enhancements for analytics, bookmarks, playlists, and themes.

At Dell EMC, I led technical delivery for device onboarding and connectivity microservices, improved device-registration session handling by 50%, and introduced distributed tracing and code-review standards. At Tecsys, I delivered the first multi-tenant SaaS Workday integration using event-driven AWS architecture and improved IoT device page rendering by 70%.

I focus on performance, scalability, security, observability, logging, and application performance monitoring, using Java, JavaScript, TypeScript, Python, cloud platforms, and AI tooling to deliver reliable software.

Experience

Work history, roles, and key accomplishments

Principal Engineer

Emeritus

Oct 2022 - Jan 2026 (3 years 3 months)

Developed and implemented tools to transition and improve their video platform from commercial to open source, resulting in annual savings of $200K. Designed and led enhancements to the video player features for analytics, bookmarks, playlists, and themes. Built a multi-tenant SaaS platform for AI-based learning features. Implemented JWT + OAuth2/OIDC authentication and authorization.

Principal Software Engineer

Dell EMC

Dec 2020 - Jan 2022 (1 year 1 month)

Enhanced and developed microservice components for device onboarding and connectivity, leading their technical delivery. Introduced distributed tracing and code review standards, improving debugging speed, service observability, and code quality across the team.

Microservices Distributed Tracing Code Review Device Onboarding Connectivity IoT Telemetry Security Performance Optimization

Senior Developer - R&D

Tecsys Inc.

Jun 2018 - Sep 2020 (2 years 3 months)

Designed, led, and delivered the first multi-tenant SaaS Workday integration solution using event-driven architecture on AWS for warehouse fulfillment and healthcare supplies. Built serverless supply-chain integration for healthcare IoT device management and boosted IoT device page rendering by 70% using front-end optimization.

AWS Event Driven Architecture Serverless Workday Integration Supply Chain IoT frontend optimization Datadog Elastic Stack Beats Elasticsearch Kibana Logstash A PM Log Aggregation Monitoring

Java Developer - EBS

Tecsys Inc.

Jan 2016 - Aug 2017 (1 year 7 months)

Developed and supported supply chain web-based applications using Java, J2EE, SQL, REST, and SOAP web services. Pioneered Iguana integration solutions, accelerating workflow development by 40% for EAI/EDI solutions.

Java Developer - Application Development

CGI Group Inc.

Sep 2014 - Dec 2015 (1 year 3 months)

Developed and aided web applications in Java, J2EE, and SQL, contributing to the stable delivery of business-critical financial workflows. Recognized as a key resource for problem resolution and collaboration.

Solutions Architect

Akamai Technologies

Mar 2013 - Jun 2014 (1 year 3 months)

Eliminated front-end bottlenecks and inefficiencies, improving website performance by implementing Front-End Optimization (FEO) on websites, which improved engagement by 30%.

Software Programmer - Application Development

IBM Canada Ltd

Sep 2011 - Jan 2013 (1 year 4 months)

Expanded and supported web application components, incorporating changing business rules across multiple platforms. Boosted supplier portal performance by 50% through code and system optimization.

Software Engineer - Product Development

IBM India Software Labs

Dec 2008 - Jul 2011 (2 years 7 months)

Developed XDIME-enabled mobile portlets for product samples, involving video streaming, image transcoding, and product catalog. Received the Top Contributor Award (2009) and the Best of IBM Award for establishing performance benchmarks.