HI THERE I’m Arnab Saha
Staff Software Engineer
working in Sunpower.

Sunpower

Works in the Customer Care Development team.

• Architected, built, and deployed an innovative chat platform integrated within the My Sunpower app. Leveraging artificial intelligence, the system intelligently understands customer queries to recommend relevant articles for immediate issue resolution. For more complex or unique concerns where a pre-existing article doesn't suffice, the platform effortlessly routes the customer to a live agent for personalized assistance, either via chat or a callback feature. This solution currently serves approximately 5,000 customers, with around 4,500 of them being seamlessly connected to live agents on a weekly basis.
• Developed a robust platform integrated into the My Sunpower app that empowers customers to effortlessly monitor the progress of their Customer Care Cases. Users can not only initiate a new case but also contribute comments and, if necessary, request a connection to a live agent. This solution is actively utilized by around 2,000 customers weekly and has contributed to more than 10% reduction in call volumes for our care agents.
• Played a pivotal role in transforming Sunpower's customer support infrastructure by phasing out the old contact center and developing an innovative, in-house solution utilizing Amazon Connect. Spearheaded the initiative to migrate an extensive dataset of 5.7 million customer call recordings and related metadata from the legacy system to AWS S3. This ensured seamless accessibility and efficient data retrieval. This strategic move significantly optimized infrastructure and operational costs, cutting down the annual expenses of our contact center from $1.2 million to $500,000 in 2023. This strategic overhaul resulted in substantial annual savings of $700,000.

Amazon.com

Worked in the Alexa Shopping Purchase Experience team.

• Orchestrated the design, development, and launch of a revamped customer experience focusing on Buy/Search/Reorder functionalities for Alexa display devices. Leading a skilled team of three engineers, I oversaw both front-end and backend development for this enhanced user interface. The new experience is actively engaged with by approximately 10,000 customers daily, and facilitates over 1,000 transactions on a day-to-day basis.
• Conceptualized, engineered, and rolled out a new customer experience specifically for the 'Add Item to Cart' feature on Alexa display devices. I was responsible for both front-end and back-end development to create a seamless and intuitive interface. This revamped experience is actively utilized by ~2k customers on a daily basis.
• Established a new reporting framework to weekly highlight operational challenges across all teams in the Purchase Experience division, ensuring visibility at the leadership level. This streamlined process not only enhanced the quality of monthly operational reports but also provided actionable insights to alleviate team-specific operational bottlenecks. Due to its effectiveness, the process was subsequently adopted by all the teams reporting to the director.

Worked in the Customer Shopping and Receipts team.

• Engineered and implemented a scalable solution to facilitate simultaneous sessions for hundreds of customers at Amazon Go Grocery. These crucial optimizations were pivotal to the successful launch of the Amazon Go Grocery initiative. Moreover, these enhancements yielded significant performance improvements, cutting down average checkout latencies by 30 seconds. For sessions involving more than five customers, the latency was further reduced by a full minute.
• Led the design and implementation of GDPR-compliant solutions within our service architecture, ensuring the secure and automatic removal of data exceeding a 30-day retention period. Furthermore, I managed the smooth migration of all 17 consumer interfaces to this GDPR-compliant data store without any service interruptions. This essential compliance work cleared the path for Amazon Go's successful debut in the UK.
• Crafted a specialized framework for conducting realistic load tests, designed to push our services to their scaling limits, specifically for Amazon Go Grocery. This initiative empowered our team to identify, debug, and resolve service bottlenecks that were impeding the successful launch of Amazon Go Grocery.

Hughes Network Systems

Worked in the Network Management System team.

• Engineered a real-time analytics application that aggregates network device statistics, stores them in MongoDB, and presents the data through visual graphs.
• Developed RESTful APIs for data retrieval in JSON format and constructed multiple web UIs using HTML and JavaScript.

Global IDs

Worked in the field of Data Discovery and Profiling in RDBMS and HDFS.

• Engineered a versatile framework for data extraction from various Graph Databases, including Titan, Neo4j, and InfiniteGraph, and created a monitoring application to visualize data and schema changes over time.
• Developed a suite of web services, both actionable for task initiation and RESTful for specific data retrieval, catering to the needs of Global IDs software.
• Designed a Graph Search algorithm that enables partial and phrase-based searches, employing intelligent indexing and query modification to reduce search times by 25%.
• Built user interfaces using Java Swing for desktop and GWT for web applications, enhancing the user experience.