Open to opportunities

Vishwas User

@vishwasuser1

Message

I build reliable Java payment and event-driven platforms.

Germany

Message

What I'm looking for

I'm looking to build and own reliable Java, Spring Boot, payments, or event-driven systems, from technical design through production. I value distributed teams, meaningful technical ownership, security, resilience, and opportunities to improve complex platforms.

I've built and owned production systems for Société Générale's digital banking and payments platform and AIRBUS engineering-data tools. My work spans technical design, delivery, production troubleshooting, and cross-team technical reviews.

At Société Générale, I implemented transaction-safe Java and Spring Boot payment flows with idempotency, retries, and duplicate-payment protection. I also designed Kafka processing for payment notifications and audit events, and integrated XGBoost risk scoring into real-time payment verification.

At AIRBUS, I migrated and processed more than one million records in an Elasticsearch-backed workflow, reducing a core query and processing path from roughly 45 seconds to under 10 seconds. I designed REST contracts, Kafka resilience patterns, and an AI/NLP-assisted document-processing integration using Python, FastAPI, Spring Boot, and Elasticsearch.

I deploy and troubleshoot containerized services across AWS and Azure using Docker, Kubernetes, Helm, and CI/CD pipelines. I keep security, architecture, and correctness decisions human while using AI engineering tools to accelerate analysis, implementation, testing, refactoring, and debugging.

Experience

Work history, roles, and key accomplishments

Senior Java Engineer

Airbus

Owned architecture and end-to-end delivery of Java/Spring Boot and Angular/TypeScript modules, defining REST API contracts and integration patterns. Optimized Elasticsearch-backed workflows, processing 1M+ records and reducing query time from 45 to under 10 seconds.

AI-Assisted Engineering Data Quality Review

Airbus

Designed an end-to-end data quality review architecture combining Spring Boot ingestion, Python/FastAPI anomaly scoring, and Angular human-review workflow. Architected Java-to-Python integration for Isolation Forest and Extended Isolation Forest evaluation.

Java 17 Spring Boot Angular TypeScript Python fastAPI PostgreSQL scikit learn Docker Isolation Forest Precision Recall ROC AUC

Java Engineer

Société Générale

Implemented reliable transactional payment flows with idempotency and retry handling. Designed Kafka-based asynchronous processing for payment notifications and audit events, and integrated XGBoost risk-scoring for payment verification.

Java Spring Boot Spring Data JPA Hibernate Spring Security TypeScript NodeJS NestJS PostgreSQL Redis Kafka REST APIs Python fastAPI XGBoost AWS Docker Kubernetes Helm Jenkins

Education

Degrees, certifications, and relevant coursework

Shridevi Institute of Engineering and Technology

Bachelor of Engineering, Electronics and Communication Engineering

Bachelor of Engineering in Electronics and Communication Engineering from Shridevi Institute of Engineering and Technology, affiliated with Visvesvaraya Technological University.