Voice Backend Software Engineer

Provided high-scale architectural strategy and hands-on engineering for European financial institutions. Designed and implemented Kafka-based real-time event systems, built backend services with Java 17+ and Spring Boot, decomposed a legacy monolith into 12 microservices, improved cloud resource usage by 35%, scaled request capacity by 1.5x, and introduced DDD and TDD practices to improve delivery rates.

Built reactive backend APIs with Spring Boot and Postgres for telemetry from 500K+ IoT devices. Optimized database schemas and queries to reduce latency by 40%, developed Python and MongoDB data pipelines, and implemented containerized deployments with GitHub Actions for AWS Linux environments.

Architected a microservices ecosystem using Java and Spring Boot for customer-facing financial workflows. Implemented ETL pipelines with Python and MongoDB, established Docker and Kubernetes automation with Jenkins to AWS, and improved risk insight delivery by 15%.

Designed an event-sourced backend using Java, Spring Boot, and Kafka for a CRM serving 5M customers across 400+ branches. Increased lead enrichment throughput 10x through MongoDB indexing and Kafka consumer group optimization, and led observability initiatives using Grafana and ELK.

Led migration of nationwide B2B applications to a cloud-native SaaS architecture using Java, Spring Boot, and Docker on AWS. Built reusable Java component libraries adopted by 60+ engineers and supported onboarding of 200+ B2B customers while maintaining platform stability.

Contributed to enterprise backend systems across .NET, C#, SQL, and ASP.NET MVC. Progressed from Junior to Mid-level while taking ownership of increasingly complex backend and integration tasks.