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Manuel Müller

Manuel Müller, M.Sc.

Senior Software Engineer · Cloud & Backend · Freelance

Freelance senior software engineer with almost 10 years of project experience in insurance, travel, automotive and e-commerce. Focused on Java, Kotlin and Go microservices on AWS and Kubernetes, infrastructure as code and AI-assisted software development with Claude Code. Co-founder of LaunchX GmbH with our own apps on the market.

Projects

  1. HUK-COBURG

    since 2024

    Senior Software Engineer / Cloud Engineer · Insurance · Coburg · remote

    Evolving the online sales channels of Germany's largest car insurer – rate calculators, application flows and connected sales services in the AWS cloud.

    • Building and running Java microservices with Quarkus for pricing and sales
    • AWS infrastructure as code with Terraform, including zero-downtime blue-green deployments
    • Extending shared libraries, CI/CD templates and deployment pipelines in GitLab
    • Monitoring and observability for a high-traffic sales channel
    • AI-assisted development with Claude Code in day-to-day project work

    JavaQuarkusAWSTerraformGitLab CIDockerREST

  2. LaunchX GmbH

    in parallel

    Co-founder · Software Engineer · SaaS & mobile apps · remote

    Our own product studio with apps such as PlannyMeals, TrackyMeals and BrutalCoach – built and run by a small team with a fully agentic workflow based on Claude Code.

    • Shared OpenAPI-first Go backend powering several products
    • Mobile apps with React Native / Expo including release automation for App Store and Play Store
    • LLM features in the products with predictable cost
    • Agentic development with Claude Code: custom skills, workflows and guardrails

    GoOpenAPIReact Native / ExpoClaude CodeLLM APIsAWS

  3. TUI InfoTec GmbH

    11/2020 – 09/2024

    Software Engineer / Cloud Native Engineer · Travel · Hanover · remote

    Project “PandA” (Price and Availability): an advanced caching system for dynamic search of hotel rates and availability, processing hundreds of thousands of offer updates from external sources every day.

    • Planning, development and testing of Java microservices and AWS Lambda functions
    • Building and optimising high-performance cache systems for fast search
    • Setting up and extending AWS infrastructure, technology selection and technical concepts
    • Analysing and structuring business requirements
    • Scrum Master: facilitating dailies, plannings, refinements and retrospectives; onboarding and mentoring

    Java 21Spring BootQuarkusGoKafkaRedisKubernetesFluxCDTerraformAWS

  4. Highpace GmbH

    12/2019 – 10/2021

    Fullstack Developer · IT services · Dachau

    Web application for Scrum Poker in distributed teams with digital rooms and a separate moderator view.

    • Frontend with Vue.js, backend with Node.js / Express and DynamoDB
    • Deployment and versioning on AWS

    Node.jsTypeScriptExpressVue.jsDockerAWS

  5. BestSecret GmbH

    01/2019 – 10/2020

    Fullstack Developer · E-commerce · Aschheim (Munich)

    Ongoing development of the international B2C fashion online shop based on SAP Hybris.

    • New REST APIs with test-driven development (unit and integration tests)
    • Extending Jenkins pipelines for continuous integration and deployment
    • Data and configuration management with IMPEX
    • New frontend features, GUI redesigns and seasonal campaigns
    • Facilitating retrospectives, brown-bag sessions and sprint reviews

    SAP HybrisJavaJavaScriptTypeScriptSCSSJenkins

  6. R+V Versicherung

    04/2017 – 12/2018

    Fullstack Developer · Insurance · Wiesbaden

    Backend and frontend development for an internal insurance platform.

    • Planning and implementing backend microservices with Java, Spring Boot and Apache CXF
    • New insurance UI built with HTML5 and Web Components
    • Additional UI with Java and Vaadin 8

    JavaSpring BootApache CXFHibernateWeb ComponentsVaadin

  7. FAU Erlangen-Nuremberg

    03/2023 – 03/2024

    Fullstack & Mobile Developer · Master's thesis · Erlangen

    Mobile and WebView-based fingerprinting in iOS and Android apps: a complete system of backend, web frontend and native apps, including a user study.

    • Backend with Node.js, TypeScript and PostgreSQL; GitLab CI/CD, Docker and Nginx
    • Native apps with Swift (iOS) and Kotlin (Android)
    • Designing, running and evaluating a user study

    Node.jsTypeScriptPostgreSQLDockerSwiftKotlin

  8. BMW Group

    10/2016 – 02/2017

    Bachelor candidate · Automotive · Bachelor's thesis · Munich

    Methods for anomaly and pattern detection in vehicle usage and diagnostic data. Graded 1.0 (top German grade).

    • Data flows and filtering with KNIME, dashboards with QlikView
    • Enabled identifying true root causes instead of follow-up errors

    KNIMEQlikViewData Analytics