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Attila Nemeth

@attilanemeth

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Senior Java backend engineer building scalable, fault-tolerant cloud microservices for high-traffic platforms.

Romania

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What I'm looking for

I’m looking for a senior backend/cloud role where I own features end-to-end, strengthen reliability with rigorous load testing, and build clean, maintainable systems that stay dependable in production.

I’m a Senior Java Backend Engineer with 9+ years of experience designing and building scalable, fault-tolerant systems in cloud-based microservice environments. I take full feature ownership—from system design and development through deployment, monitoring, and maintenance—staying focused on clean, maintainable implementations that perform well in production.

In recent roles, I’ve led reliability and performance improvements through end-to-end load testing and scaled Kafka-based event processing by removing throughput bottlenecks. I’ve also delivered measurable business impact through backend ownership (e.g., over $5M in annual savings, $12M in new revenue) and cost reduction initiatives (e.g., cutting database expenses by 70%), while integrating AI-driven code generation tools into standard engineering practices.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Masabi

Aug 2025 - Present (11 months)

Developing and maintaining Kotlin and Java microservices on AWS for Masabi’s ticketing and payment platform.

Leading work on a new notification service, designing it for scalability and integration with existing systems.

Load-tested a high-traffic payments/entitlements API end-to-end with a Gatling harness (~2.1M requests, multi-phase, production-mirrored).
Scaled the event-processing service t

Kotlin Java AWS Microservices Notifications Gatling Kafka API Gateway Load Testing AutoScaling Distributed Systems Claude Code OpenAI Codex

Senior Software Engineer

Grubhub

May 2022 - Apr 2025 (2 years 11 months)

Worked on the meal credit management platform, internal admin tools, and diner checkout flows for one of the largest food delivery companies in the US, serving millions of active users under high-concurrency conditions.

Led backend development for the meal credit management system, powering client admin configurations, diner home pages, checkout, and time/duration settings, improving usability, r

Java Spring Scala Spark Docker Kubernetes REST gRPC Cassandra SQL AWS S3 AWS IAM Datadog Splunk Jenkins GitHub Eureka Kafka Gradle Elasticsearch

Senior Software Engineer

EDEKA DIGITAL GmbH

Jan 2021 - Apr 2023 (2 years 3 months)

Developed backend systems forming the digital infrastructure of Germany’s largest supermarket chain, supporting internal retail operations and supply chain optimization tools.

Designed and implemented new features for both microservices and monolithic applications, improving scalability and maintainability.

Optimized system performance by refining database schemas, tuning queries, and reducing S

Software Engineer

Vanguard

May 2021 - May 2022 (1 year)

Migrated an internal system from a monolithic architecture to a microservices-based architecture, developing RESTful APIs and an email routing service using Spring Boot.

Enhanced system capabilities with AWS Comprehend for sentiment analysis and extended interoperability with Microsoft Dynamics.

Collaborated with product owners and technical stakeholders to gather requirements, define architectu

Spring Maven Swagger AWS Lambda AWS ECS AWS CloudFormation AWS Cloudwatch AWS IAM AWS ELB Bitbucket

Full Stack Engineer

msg systems Romania

Aug 2017 - Dec 2020 (3 years 4 months)

Built backend and frontend modules for BMW’s over-the-air (OTA) update platform, enabling seamless remote software updates and feature activation for millions of connected vehicles worldwide.

Designed and implemented new features within a microservices-based architecture using Java and Spring, ensuring scalability and reliability.

Collaborated closely with product managers, fellow engineers, and

Java Java EE JPA Hibernate JMS Swagger Angular TypeScript PostgreSQL OpenShift Jenkins Docker Maven Amazon S3 Joynr Glassfish Gatling Selenium Flyway Scala Kibana Grafana XML JSON Git

Summer Intern

Accenture

Jun 2015 - Jul 2015 (1 month)

Designed and implemented an iOS application using Swift.
Built a user-friendly interface for controlling a Lego Mindstorms robot, improving interactivity and overall user experience.

Swift iOS iOS app development LEGO Mindstorms