Nov 2022 – Present · 3 yrs 4 mos · Cambridge, England, United Kingdom

• 1. Designed and built the cloud-based architecture for the Revolutio SaaS platform from scratch. To optimize costs for low-volume clients, a serverless, event-driven architecture was adopted. For high-volume clients, infrastructure stack isolation was achieved using multi-tenancy design patterns.
• 2. Built frontend websites for business and legal users using Flutter & React, connected to backend services using AWS Amplify framework.
• 3. Developed generative AI assistants for information retrieval and task automation. Leveraged step functions to build agents integrating multiple assistants. This enabled a multistep approach to handling complex queries and tasks.
• 4. Increased customer productivity by building plugins for Outlook, Word & Slack to import relevant data. This also reduced onboarding time by 30%.
• 5. Setup CI/CD pipelines for dev & prod, canary testing and severity metric alarming. Increased operational efficiency and alertness to ensure a < 1% failure rate.

May 2022 – Oct 2022 · 5 mos · Stockholm County, Sweden · Remote

• 1. Built a desktop web app for remote collaboration using Flutter and AWS, including floating widgets for notifications and video, real-time syncing of user calendars and slack statuses, and teams to organize the workplace.
• 2. Designed and built a new feature for creating teams, presenting organization hierarchy, and allowing people to join meetings and show the statuses of other team members. Most clients heavily demanded this feature; it was delivered in two months.
• 3. Initiated and managed agile software development as the team lead. Established processes for backlog grooming, scheduled releases, and updates, streamlining communication around reporting and fixing bugs, and creating documentation for all features and roadmap.

Apr 2022 – Present · 3 yrs 11 mos · Remote

• Portfolio: https://www.toptal.com/resume/priyanshu-sekhar

May 2021 – Apr 2022 · 11 mos · Miami, Florida, United States · Remote

• 1. Designed and built several workflows for order fulfillment, including invoices, quote, purchase orders, and more.
• 2. Built the testing framework for the back end and front end to verify database migrations, API-level unit tests, and screen UI testing, integrating those tests into the deployment pipeline.
• 3. Modularized the front-end code to build a more scalable architecture. Optimized GraphQL and REST back-end API queries, improving latency and cost.
• 4. Integrated with several AWS services for messaging, notifications, serverless back end, and scheduled jobs, improving the usability of Digibuild software.
• 5. Designed the blockchain framework to store transactions on the Ledger using AWS-managed blockchain.

Jan 2019 – Dec 2022 · 3 yrs 11 mos

• Natural Language Generation, Alexa Answering Team
• 1. Designed and built a batch ingestion pipeline to process over a billion knowledge facts, generated additional lexical properties and update in the language database.
• 2. Implemented a new language model to answer complex sports based questions with a scalable architecture that allows ontological relations to grow linearly with the number of facts.
• 3. Optimized big data workflows and ETL jobs to increase efficiency by more than 2x alongside reducing cost by 85% all the while ingesting 20 times more facts (from 100 million to over 2 billion per day)

Jan 2019 – Feb 2021 · 2 yrs 1 mo

Oct 2018 – Jan 2019 · 3 mos · Bangalore, India

• 1. Built a company migrator tool to automate cloning of all client related information from one QA environment to another.
• 2. Understood several gateway (downstream services) use cases, to design and execute the smooth transition of API invocation changes (security, accessibility etc.), as the code-base deployment migrates from IHP to AWS.

Jul 2017 – Sep 2018 · 1 yr 2 mos · Bangalore

• 1. Designed architecture and backend implementation of Naradd client portal. Built features for client onboarding, managing company info and team-member access. Integrated APIs to send SMS, WhatsApp, Email and Push Notifications.
• 2. Built query and analytics over large data files (uploaded by clients) using AWS Athena and Glue.
• 3. Designed and implemented pipeline to profile users and ensure optimal engagement across several communication mediums.
• 4. Initial development of Naradd android app. Integrated features for authentication, category selection, subscribe/unsubscribe to companies.
• 5. Built Naradd web app for iOS users with integration to whatsapp for transactional communications.

Feb 2017 – Jun 2017 · 4 mos

• Integral member of Data Pipeline (Activities) Team.
• Designed and built a microservice for reading transactions instantly from several domains (invoice, orders, request money, etc.), extracting other relevant information, aggregating and storing to a unified database to be later shown up in User's Activity Page.
• Reduced the above ETA of read-to-write by 5x, down to 2 seconds.

Jul 2015 – Jan 2017 · 1 yr 6 mos

• Developed Data Reconciliation pipeline using Kafka and PayPal internal messaging queues. Drastically reduced the messages in Exception queue, and improved efficiency in data correction, and storage to 5 nines to reliability.
• Built a patching tool by attaching the pipeline with a microservice for on-demand data-correction. Integrated that with PayPal NFS for easy and fast upload of patch files. This proved to be quite handy for all teams across PayPal BLR for maintaining data consistencies.

May 2015 – Jul 2015 · 2 mos · Kharagpur Area, India

• Integrated GenApp software with Apache Airavata for executing computational jobs on distributed resources.