Edvinas Maciulis

Senior Java Engineer and Solution Architect with 20 years of backend delivery across financial services, government, retail, media, and data platform domains. Built and operated high-throughput REST APIs, microservices, and Spark data pipelines on AWS and GCP - from early design through production operations. Experienced in regulated environments with security reviews, on-call, and audit-friendly delivery. Comfortable leading architectural decisions, conducting code reviews, and mentoring engineering teams while remaining hands-on. Core stack: Java 17/21, Spring Boot, Kubernetes, Docker, Terraform, AWS. AWS Certified Solutions Architect. MSc Software Development Engineering. Based in Zürich, Swiss B permit, EU national. Available for remote and hybrid contract engagements across Switzerland, EU and the UK.

Selected Highlights

●​ Migrated a multi-terabyte dataset into a cloud-native NoSQL and search platform, delivering the data backbone for a new production system on AWS.

●​ Built a Java replication service keeping two production datastores in sync with single-digit-second p99 latency on AWS.

●​ Contributed an authentication feature to Google's open-source CDAP platform (Kubernetes) - reviewed and merged by the upstream maintainers.

●​ Cut Spark cluster compute costs on AWS by 35% through job tuning and resource optimisation - no functionality changes, lower bill.

●​ Designed and operated REST APIs sustaining millions of requests per day at 99.98% success rate across tens of thousands of endpoints.

● ​Produced architecture documentation for two data platforms and ran hands-on sessions with engineering teams on design, testing, and CI/CD practices.