Pankaj Sen
Bengaluru
Summary
Senior Software Engineer with 13+ years of experience designing, building, and operating large-scale distributed backend systems using Java, Kotlin, Spring Boot, Spring WebFlux, and Microservices. Extensive experience designing versioned REST APIs, event-driven architectures, and cloud-native applications deployed on AWS and Kubernetes. Proven track record of leading end-to-end feature ownership—from product discovery and architecture design through implementation, deployment, production monitoring, and continuous optimization. Strong advocate of engineering excellence through automated testing, CI/CD, observability, and architecture governance with multiple Architecture Decision Records (ADRs). Experienced in mentoring engineers, driving cross-team technical initiatives, and delivering high-performance backend platforms at enterprise scale.
Overview
14
14
years of professional experience
Work History
Sr Engineer
Target Corporation
12.2019 - Current
- Architected and owned a high-scale, real-time price optimization platform enabling ML-driven pricing decisions for millions of item-location combinations.
- Designed scalable, versioned REST APIs and event-driven microservices using Java, Spring Boot, Kafka, and Gradle, ensuring low latency and backward compatibility.
- Owned end-to-end delivery of multiple business-critical features—from product discovery and architecture to implementation, deployment, production monitoring, and continuous improvements.
- Improved API performance by 70% through architectural optimizations and asynchronous processing, with Grafana dashboards to measure production impact.
- Built robust unit and integration testing frameworks using JUnit, Mockito, and Spock, enabling reliable CI/CD and high deployment confidence.
- Leveraged AWS and Kubernetes to deploy and operate distributed backend services, implementing observability through Grafana, metrics, and structured logging.
- Authored Architecture Decision Records (ADRs), led architecture reviews, mentored engineers, and drove technical alignment across multiple engineering teams.
Sr Engineer
TEKsystems Global Services
05.2018 - 11.2019
- Led migration of legacy monolithic applications to scalable Spring Boot microservices using Gradle-based build systems.
- Designed and developed highly available backend services using Java, Cassandra, and REST APIs for distributed enterprise applications.
- Deployed and operated backend services on AWS, participating in environment provisioning, deployment automation, production stabilization, and operational support.
SSE
Netcracker Technology
03.2016 - 04.2018
- Designed and implemented backend systems for a large-scale telecom platform, handling service order processing, location feasibility evaluation, and support for value-added services.
- Built a request orchestration and validation layer to coordinate multi-step service workflows, enabling reliable scheduling and seamless onboarding of new services.
- Owned end-to-end service fulfillment workflows, incorporating configurable pricing and discount rules to ensure correctness, reliability, and timely execution.
SE
Envestnet
10.2012 - 02.2016
- Designed and implemented a data aggregation platform to collect and validate financial data from user accounts, collaborating with business stakeholders to translate requirements into scalable backend workflows.
- Built automated data extraction and monitoring mechanisms to ensure reliable data retrieval, request traceability, and operational visibility across external integrations.
Education
MCA - Computer Science
Rajiv Gandhi Proudyogiki Vishvidyalaya
06-2012
Skills
- Java
- Kotlin
- Spring Boot
- Spring WebFlux
- Spring Security
- Spring Batch
- Microservices
- REST APIs
- OpenAPI (Swagger)
- Apache Kafka
- Gradle
- AWS
- Docker
- Oracle
- Cassandra
- MongoDB
- Redis
- Elasticsearch
- JUnit
- Mockito
- Spock
- Testcontainers
- WireMock
- Git
- Jenkins
- CI/CD
- Grafana
Timeline
Sr Engineer
Target Corporation
12.2019 - Current
Sr Engineer
TEKsystems Global Services
05.2018 - 11.2019
SSE
Netcracker Technology
03.2016 - 04.2018
SE
Envestnet
10.2012 - 02.2016
MCA - Computer Science
Rajiv Gandhi Proudyogiki Vishvidyalaya