Sajid Hussain

• Maintained mobile and backend apps supporting in-store consumer purchases.
• Addressed and solved technical issues faced by merchants.
• Resolved deep-rooted technical issues (e.g., URL encoding for Walmart USA’s in-store launch)
• Helped the team in migrating the microservices and infrastructure to APAC region.
• Reason for leaving: Team eliminated due to restructuring.

• Provided Level 2 support for Java REST APIs with rapid incident response.
• Diagnosed server issues and recorded triage actions and outcomes.
• Prioritized and escalated critical support tickets to Level 3 engineers.
• Documented bugs and applied change control to stabilize applications.
• Maintained service reports and enriched knowledge bases for faster resolutions.

• Maintained and enhanced the Big Data Engine behind APSIS ONE.
• Contributed in transforming ORC files from AWS S3 to Riak KV via AWS Step Functions.
• Found, raised and fixed Qurakus#36810.
• Reason for leaving: Laid off due to downsizing.

• Contributed in building and extending P.F.C. iOS Application.
• Designed a custom StepperView to be used as an independent component in the application.
• Implemented KYC question and answer sequence with custom designed UI widgets.
• Documented and implemented Savings Account flow backed by SVEA Bank BaaS.
• Reason for leaving: Company closed due to investor exit.

• Served in the R&D team proposing solutions followed by POCs.
• Integrated IP Camera with Sirius+.
• Single handedly designed and implemented a WPF based EMS for a client.
• Contributed in the implementation of a queue-based message adaptor system for hospitals.

• Served as both advisory and hands-on engineer, leading development of the DHL Express iOS.
• Evaluated hybrid mobile frameworks and proposed tech solutions via POCs.
• Reviewed previous app version, contributing UX/UI improvements in collaboration with PMO.
• Mentored junior developers and ensured code quality through regular reviews.

• Led technical initiatives in test automation, Java, and mobile development.
• Designed and maintained Google’s WebRTC testing framework, KITE.
• Integrated cloud-based load testing into KITE for enhanced scalability.
• Developed a native WebRTC client for macOS.
• Explored WebRTC integration with React Native, CMake, and Qt.
• Contributed to seamless cross-platform WebRTC build systems.

• Developed a streaming app connecting a custom camera to YouTube, Twitch, and Facebook.
• Tuned ijkplayer configuration for low-latency video playback.
• Integrated Nginx and FFmpeg in the application for real-time video format conversion.
• Supported sprint and release planning with product and project managers.

• Led the implementation of consumer and shopper mobile applications.
• Contributed to application design through idea validation and UX input.
• Recruited, onboarded, and mentored mobile engineering team members.
• Established and maintained coding standards to ensure code quality and consistency.

• Designed, implemented, and maintained the SKYLINK SDK for iOS and Android platforms.
• Contributed to the architecture of the SKYLINK messaging protocol.
• Designed a custom file transfer protocol for SKYLINK, based on TFTP.
• Supported video call integration in Viber and Amazon Fire Phone using SKYLINK.
• Contributed to Google WebRTC (revisions 5518, 5671, 5674) with core enhancements.

• Developed and maintained Feecha, a location-based social/news iOS app.
• Built microservices on Google App Engine using Cloud SQL and MySQL GeoSpatial features.
• Managed EC2 instances running Java schedulers for image analysis via Amazon SQS.
• Implemented NLP-driven keyword extraction and text summarization.

• Enhanced casual and social mobile games for iOS and Android, including JapanLife.
• Developed gameplay prototypes, including a treasure mining game concept.
• Integrated Adobe Photoshop SDK into an internal design tool to streamline asset workflows.
• Contributed to the development of Monster Fishing game using Unity.

• Mentored iOS, Android, and Ruby on Rails teams, fostering skill growth and code quality.
• Contributed to software requirements analysis, effort estimation, and planning.
• Conducted interviews, code reviews, and led technical knowledge-sharing sessions.

• Led the development of cross-platform mobile games using Cocos2d and NGCore SDK.
• Delivered the collectible card game Titans vs. Olympians for the Mobage platform.
• Evaluated and prototyped game features using Marmalade SDK (formerly Airplay).
• Worked on the popular titles including Tap Birds, Tap Jurassic, and Dream Fish.

• Maintained Java scheduling services for database operations on IBM Informix.
• Resolved issues related to FTP/FTPS/SFTP file transfers and database locking mechanisms.
• Created a custom wrapper for Apache Commons DBCP to optimize connection pooling.
• Enhanced the performance and reliability of email and SMS delivery systems.

• Developed and maintained Java Struts-based mobile media upload web application.
• Led teams to deliver customized versions for Telenor Pakistan and Vodafone in EU.
• Designed and implemented admin tools and registration modules to improve user experience
and app management.
• Integrated SMSE services with backend systems for messaging functionality.

• Developed Windows applications including MyKidIsSafe, a parental control application.
• Conducted analysis and design for software projects in various domains and technologies.
• Gathered feedback from the customers and fixed bugs to maintain robustness in applications.

• Led teams of 3 to 10 as a System Architect, overseeing backend and client-side development.
• Maintained servlet-based web app and built Java Swing clients with C++ UDP socket servers.
• Integrated Challenge-Response Authentication with Active Directory using JNDI and jCIFS.
• Developed a columnar DB engine and C++ tools for text folding validation.

Grade: 2.5

Completed a Master of Business Administration with a focus on Management Information Systems, gaining knowledge in strategic management, information systems, and business analytics.

Grade: 3

Earned a Bachelor of Computer Science with a specialization in Software Engineering, covering core principles of software development, programming languages, and system design.