Gopal Krushna Pattanaik

Software Engineer

Bengaluru, Karnataka, India17 yrs 3 mos experience
Most Likely To SwitchHighly Stable

Key Highlights

  • Transformed monolithic architectures into cloud-native microservices.
  • Led high-scale system design for Walmart's order management.
  • Achieved $1B+ in annual GMV benefits through legacy modernization.
Stackforce AI infers this person is a Backend-heavy Fullstack Architect in the Retail and Fintech industries.

Contact

LinkedIn

Skills

Core Skills

MicroservicesSolution ArchitectureEvent Driven ProgrammingFulfillment Management

Other Skills

AJAXATG CSCATG DynamoATG SearchAgile MethodologiesApache KafkaAzure Cosmos DBAzure SQLAzure Service BusCircuit BreakersCloud ComputingDatabase DesignDistributed SystemsDomain-Driven Design (DDD)Elasticsearch

About

Strategic Engineering Leader & Principal Architect with 17 years of experience designing internet-scale distributed systems. I specialise in transforming complex monolithic architectures into high-throughput, cloud-native microservices that maximize business agility and drive billions in revenue Currently, as a Senior Architect at Walmart Global Tech, I lead the technical strategy for the Sam's Club Order Management System. My focus is on building fault-tolerant, event-driven platforms capable of handling 50,000+ transactions per minute with zero downtime.Core Competencies & Impact:High-Scale System Design: Architected and led the migration strategy for the Omni-Order Search Service, successfully handling 350+ TB of 7-year historical order data and indexing massive scale requirements from both online and club orders. Simultaneously designed fulfillment orchestration platforms managing 60k+ orders/min during peak. (Black Friday/Cyber Monday).Legacy Modernization: Led the zero-downtime, multi-year migration of Sterling OMS to a custom cloud-native solution. This strategic initiative unlocked $1B+ in annual GMV benefits and additional business opportunities.Payments & Security: Designed robust payment services managing 14M+ tokenized cards and PCI compliance for Walmart Mexico and Global markets.Technical Leadership: Member of the Architecture Review Board (ARB), driving organization-wide engineering excellence, implementing Chaos Engineering principles (Self-Healing systems), and mentoring Staff and Senior Engineering talentTech Stack: Java, Spring Boot, Kafka, Azure (Cosmos, Event Hub, Service Bus, SQL), Kubernetes, Elasticsearch, and GenAI integrations.I am passionate about solving "impossible" scale problems and building engineering cultures centered on resilience , excellence and innovation.

Experience

Walmart global tech india

3 roles

Principal Software Engineer / Senior Architect

Promoted

Sep 2022 – Present · 3 yrs 6 mos

  • In my role as Principal Software Engineer/Senior Architect at Walmart Global Tech India, I spearheaded the overhaul of Sams Club's order management and fulfillment systems. By transitioning to microservices architecture, we significantly increased system capacity to handle 50K TPM. I led the development and integration of various order management systems, optimizing processes for OMS, FMS, Supplier Order Fulfillment, and Omni Order services. My efforts resulted in a more agile and scalable supply chain infrastructure, supporting the growth of Sams Club's e-commerce platform.
Supply Chain ManagementOrder ManagementFulfillment ManagementOrder FulfillmentFulfillment ServicesTechnology Leadership+12

Staff Software Engineer / Architect

Dec 2020 – Sep 2022 · 1 yr 9 mos

  • Led the design and implementation of a next-generation payment service for Walmart Mexico banners, integrating with 3rd party Fraud systems for fraud prevention.
  • Responsible for Architecture design and implementation, focusing on system improvements and operational efficiency.
  • Provided technical leadership on new and strategic decisions for the product.
Microsoft AzureJavaScalable ArchitectureAzure Cosmos DBEvent Driven ProgrammingApache Kafka+4

Staff Software Engineer/Architect

Oct 2019 – Dec 2020 · 1 yr 2 mos

  • In my role as a Staff Software Engineer/Architect at Walmart Global Tech India in Bengaluru, Karnataka, I led the design and development of cutting-edge fulfilment management systems. By utilizing enterprise microservices patterns and a tech stack including Java, SpringBoot, Kafka, and more, I optimized fulfilment paths to handle 60K orders per minute at peak, solving critical problems in the retail supply chain.
Supply Chain ManagementcomsosSpring Bootjava 17Fulfillment ServicesMicroservices+7

Tesco bengaluru

6 roles

SDE-II / Technical Architect

Promoted

Dec 2018 – Oct 2019 · 10 mos

  • Dedicated to Designing and developing highly available, scalable and eventually consistent Microservices and Products with very high throughput and low latency .
  • Working in Technologies like Microservices, Domain driven design, System Desgin Architecture,Java,Spring , Spring Boot ,Kafka ,Hystrix ,Gradle , Jenkins,GIT, OAuth2.0 integration, kafka SSL security , Apache Ignite , Dropwizard.

SDE-I / Technology Expert

Oct 2016 – Dec 2018 · 2 yrs 2 mos

  • Working towards Modernisation of Tesco Direct web site and adopting micro services based enterprise services and working with latest tech stack.
  • Tech expert /developer with éņÐ to end thinking and actively working with system design and micro services , reactive programming, functional programming, Java 8,maven ,GIT.

Technology Expert

Dec 2015 – Oct 2016 · 10 mos

  • A Tech Expert with Full Stack Exposure
  • Additionally taken responsibility to Design, Develop, and implement of new Projects that is running in Tesco Technology level, by collaborating with different teams across Technology. Translating the business requirements in to Technical designs.
  • Have fair knowledge in designing Event driven and enterprise micro service based system architectures.
  • Skills:-
  • ATG Commerce, ATG CSC,ATG Search, ATG BCC, Java/J2EE, Oracle Hexadata , Oracle 11g,Executors,Eclipse,REST,UML,Cross flow impact diagrams. Jboss ,IIS, ANM, Splunk, user journey analysis, GTM, Server farm Management, JVM Tuning, Visio, GIT, Jenkins./CICD/Agile Scrum expert.

Principal Software Engineer

Nov 2014 – Nov 2015 · 1 yr

  • Have taken the additional responsibility of Production Support of Tesco Direct site, have supported the yearly events of Black Friday, have worked in both horizontal and vertical scaling, using multithreading and Bucketing technique, wrote Components to Consume REST services. Have avoid long running issues with websites by implementing the various Scaling approaches. Conducted KT sessions and worked towards mentoring peers.
  • develop/ support /enhancement @Tesco.com/direct.
  • Skills:-
  • ATG Commerce, ATG CSC,ATG Search, ATG BCC, Java/J2EE,Eclipse,Executors,Oracle11g,TFS,REST,UML,Cross flow impact diagrams. Jboss, IIS, ANM, Splunk, user journey analysis, GTM, Server farm Management, JVM Tuning./AgileScrum Expert

Senior Software Engineer

Promoted

Nov 2012 – Nov 2014 · 2 yrs

  • Working with Scrum team at UK where i was responsible for providing solution's to the prioritized Epics from Backlog along with supporting and resolving the production issues. Have collaborated with team at offshore and business at onsite to timely deliver quality releases monthly.
  • Taken responsibility on delivering new features independently and by peer programming. Have Vastly worked on New features in ATG including creating new Payment Group types, DMS Queues, schedulers
  • Skills:-ATG CSC,ATG Commerce, Oracle 11g,Java/J2ee,Jboss,Eclipse,TFS

Software Engineer

Jan 2011 – Nov 2012 · 1 yr 10 mos

  • worked as a developer jsps , wrote new ATG components as part of bug fixes and new enhancements
  • Skills:-
  • ATG CSC , Java/J2ee , Jboss,Eclipse, TFS

Wipro

Project Engineer

Dec 2008 – Jan 2011 · 2 yrs 1 mo · Cochin Area, India

  • Worked as ATG devloper in Wal-Mart Account. Was responsible for enhancing and maintaining the ASDA groceries site for UK.
  • Technology-JAVA/J2EE/XML/ORACLE/ATG 2007.1, CSC

Education

Kalinga Institute of industrial and Technology

B.Tech — Electronics and Telecommunication

Jan 2004 – Jan 2008

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