Gabriel Gauci Maistre

Munich, Germany · gabriel@gaucimaistre.com · (+49) 1573 3719048 · https://gabriel.gaucimaistre.com

Senior software engineer with nine years of experience building cloud-native backend, pricing, geospatial and machine-learning systems. Combines production Java and AWS expertise with a data-science background, taking complex systems from modelling and architecture through delivery and operational ownership.

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Experience

SIXTMunich, Germany
Senior Software Engineer2025 - Present
  • Led end-to-end delivery of SIXT Share's dynamic pricing engine across seven cities in two countries, combining H3 geospatial modelling with production demand forecasting
  • Built a walk-forward backtesting framework, selected the strongest demand-forecasting model and productionised it within the dynamic pricing platform
  • Led backend delivery of kilometre-based pricing and quote APIs, expanding customer pricing options through cross-team coordination with mobile engineers
  • Built reusable AI agents for designing and analysing Statsig A/B tests and refining backend tickets, published internally and adopted by engineers across multiple teams
  • Owned pricing and billing reliability, resolving high-impact authorisation, regression and data-integrity incidents and strengthening production safeguards
Software Engineer2022 - 2025
  • Built and operated Java and Go microservices on AWS supporting SIXT's mobility platform, with responsibility spanning implementation, deployment and production behaviour
  • Led migrations of legacy Java and Go services to Spring Boot and Go Micro, reducing the legacy footprint and improving maintainability and operational consistency
Senior Data Scientist2020 - 2022
  • Architected geospatial data pipelines (Uber H3, OSMnx) and optimisation models (Integer Linear Programs) for real-time competitor tracking and fleet assignment
TipicoSt. Julian's, Malta
Data Scientist2017 - 2020
  • Built machine learning models (scoring, recommenders) and BI pipelines to drive data-driven retail decisions

Education

Malta College of Arts, Science, and TechnologyMalta
B.Sc. (Hons) Software DevelopmentSep 2014 - Jun 2017

Skills

Languages & Frameworks:Java, Spring Boot, Python, Go, SQL, Gradle
Cloud & Distributed Systems:AWS, Kubernetes, Docker, Kafka, gRPC, REST, Jenkins
Data & Observability:PostgreSQL, Redshift, H3 geospatial, Grafana
Applied AI & Experimentation:LLM agents, MCP, Statsig, A/B testing
Languages:English (C2), Maltese (C2), Italian (B2), German (B1)

Projects

Shopping Cart Spring Boot, React, PostgreSQLhttps://github.com/gabegm/shopping-cart
Full-stack e-commerce platform built with Java 21, Spring Boot, React and PostgreSQL, featuring JWT security, audit logging, CI and end-to-end tests
Gatekeeping Java, Spring Boothttps://github.com/gabegm/gatekeeping
Enterprise headcount-planning and approval system migrated from Flask and SQLite to Spring Boot and PostgreSQL
Job Grader Svelte, TypeScripthttps://github.com/gabegm/job-grader
Job role grading tool that scores and levels roles using the point-factor method