Selvaraj K.
Senior Full Stack & Cloud Architect
Experience
Oct 2021 - Aug 2025
3 years 11 monthsWiesbaden, Germany
Senior Full Stack & Cloud Architect
HCLTech
- Led end-to-end implementation of the Miles and More Credit Card Service, integrating with TSYS systems, with the platform deployed on Microsoft Azure
- Architected secure, scalable APIs and microservices using Spring Boot, Camunda, and Apache Kafka (Confluent Platform) for real-time event streaming and process automation, deployed on Azure Kubernetes Service (AKS)
- Managed the full development lifecycle of the credit card system on Azure Cloud, including fraud detection, payment processing, account management, and Kafka-based event-driven data pipelines for transaction processing
- Designed and implemented Kafka Connect integrations and Schema Registry for seamless data flow between microservices and legacy systems
- Introduced Agile best practices, improving team efficiency by 30% and reducing project delivery time
- Directed and mentored a team of 15+ developers, fostering a collaborative, cloud-first, and innovation-driven culture
- Managed client relationships, achieving 95% satisfaction and securing follow-up projects through consistent delivery excellence
- Designed and deployed BPMN/DMN models in Camunda for complex business workflows and automation
- Configured Camunda Engine with advanced features such as error handling, RPA integration, and multi-version deployments
- Integrated Camunda and Kafka-based messaging with the bank’s core systems, ensuring high availability and data consistency across distributed services
- Managed multi-database schema configurations on Azure and optimized system performance for high throughput and fault tolerance
- Designed and implemented cloud architecture patterns on Azure, focusing on multi-region resilience, data sovereignty, and event-driven scalability for critical financial workloads
Aug 2019 - Oct 2021
2 years 3 monthsSenior Consultant
Capgemini
- Developed a digital platform for Alert Breach Management in the FX/FI trading system, leveraging Camunda workflow engine, Spring Boot, Apache Kafka, and Oracle to enable real-time monitoring and automated rule-based alerting
- Played a full stack developer role covering analysis, design, development, and unit testing for a scalable microservices architecture with a ReactJS single-page application front end, integrated with AEM and deployed on AWS Cloud
- Implemented second-level ID validation for traders using Camunda Process APIs and workflow rule automation, ensuring compliance and operational efficiency in financial trading workflows
- Utilized Camunda BPMN, Kafka-based event streaming, Spring Boot, and PingID for secure authentication, with a ReactJS back-office application consuming REST APIs and gRPC services (Golang) to protect Keycloak-based identity systems
- Deployed and managed microservices on AWS using Docker, ensuring high scalability, resilience, and maintainability of trading operations
Dec 2017 - Aug 2019
1 year 9 monthsTechnical Architect
Verizon
- Developed ATOM services to establish a digital platform for B2B and C2C e-commerce portal, utilizing multiple backend services such as address qualification, product API, cart API, TN portability, credit check, payment gateway integration, and order submission with ReactJS within an AEM cloud single-page component-based architecture
- Designed a single-page ATOM architecture for e-commerce online web portal, encompassing various telecommunication products
- Developed microservices based on Golang gRPC, employing protobuf for efficient network communications of telecommunication products across multiple channels
- Designed and integrated common REST and SOAP web services with HTTP, JMS, and MQ in Kafka, following the hub-and-spoke architecture to integrate front-end channels with the in-house offer engine CRM
- Devised a real-time interface solution for address verification using Ping products and integrated customer management repository with Elasticsearch
- Defined Camunda workflow rules using Camunda modular and implemented HTTP connector, expressions, and Java implementation for the end-to-end ordering application step-by-step process
- Architected AWS cloud platform infrastructure for a large number of microservices, successfully deploying it with effective versioning techniques (jgitflow) and enabling graceful shutdown and restart with AWS Lambda
Jan 2017 - Dec 2017
1 yearAssistant Manager
Citicorp Services India Ltd.
- Developed the Fundamental Review of Trade Book analytical platform using multiple Spring Boot services with a document-based database and Kafka for FRTB applications like DataRecon, DataTransform, and DataSync
- Implemented a ReactJS-based grid mechanism to perform multi-sort filter on trade data with server-side pagination
- Provided end-to-end design solution and change specification for Fundamental Review of Trade Book for Foreign Exchange and Investment
- Developed big data analytical microservices to understand trader and investor risk using the trade schema
- Built data-transform and data-reconciliation APIs aimed to calculate risk for traders and the bank
- Developed Spring Boot microservices with Swagger API applications to support trading book review using Couchbase, Kafka (Confluent), and Apache Storm
Apr 2015 - Jan 2017
1 year 10 monthsSoftware Engineer
Royal Bank of Scotland
- Implemented Logon Micro Manager Services (LMMS) to provide secure authentication for RBS internet banking, verifying customer ID and PIN/password with secured retail partial PIN/pass and generating tokens
- Developed Federated Single Sign-On (F-SSO) capability to allow users to log in once per session and access multiple authorized systems without reauthentication, using SAML protocol between Identity Provider and Service Provider
Jul 2011 - Sep 2014
3 years 3 monthsSystem Engineer
IBM India Private Limited
- Served as application developer for the Referential Data System for Bank of America, responsible for monitoring and reporting the health of BOA applications
- Developed multiple rules to monitor application health status using application logs as input to identify errors and issues
- Updated the dashboard every eight hours to monitor errors, memory issues, and application performance
- Delivered a dashboard application used by the support team to monitor application status
Summary
Senior Full Stack & Cloud Architect with over 14 years of experience designing, developing, and deploying resilient, event-driven software solutions across financial and enterprise domains.
Skilled in Java, Python, ReactJS, Camunda BPM, AWS, and Microservices, with 5+ years of hands-on expertise in Apache Kafka (Confluent, AWS MSK, and open-source distributions).
Proven ability to architect secure, scalable, and streaming-based cloud platforms, focusing on data sovereignty, operational resilience, and multi-cloud strategies to reduce vendor lock-in and geopolitical risks.
Experienced in implementing real-time data streaming solutions using Kafka Connect, Kafka Streams, KSQL, and Schema Registry, and deploying Confluent Cloud services such as ksqlDB Cloud and Apache Flink. Strong background in Docker, Kubernetes, and CI/CD pipelines, with familiarity in stream governance, data lineage, and modern event-driven architectures.
Languages
English
NativeTamil
NativeGerman
IntermediateEducation
Oct 2007 - Jun 2011
PSG College of Technology
B.Tech · Coimbatore, India
Certifications & licenses
Oracle 11g Fundamentals
Oracle
Oracle Certified Java Professional
Oracle
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