30.10.2026 aktualisiert

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Senior Software Engineer | Java, Spring Boot, Angular | AI Agentic Coding | AWS Solution Architect

Vienna, Österreich
Weltweit
Vienna, Österreich
Weltweit

Profilanlagen

ValentinTanase_CV26_FreelanceSeniorSoftwareEngineer&Architect_en.pdf
ValentinTanase_CV26_FreelanceSeniorSoftwareEngineer&Architekt_de.pdf

Über mich

Team Player - Customer centric focus - Efficient communicator - Curious - Tech enthusiast - AI Coding experienced

Skills

AI AgentsGitHub CopilotLLMJavaAPIsAmazon Web ServicesCloud-EngineeringDevOpsJava ArchitecturesAngular 2+Solution ArchitectureBackendGitLabGitlab-CiFull Stack Entwicklung
Wer bin ich?

Ich bin ein Senior Software Entwickler, (zertifizierter AWS) Solution Architekt, Tech Lead und CTO mit über 26 Jahren Erfahrung in verschiedenen Branchen wie Autoindustrie, E-Government, EU-Institutionen, Banken/Finanzdienstleistungen, Fremdenverkehr, Online-Gaming und Sportwetten.

Was biete ich an?
  • Full Stack (Java/Angular) und Backend (speziell Java/Spring/Spring Boot) Entwicklung
  • AI Agentic Coding
  • Unterstützung bei der Implementierung/Konzeptionierung von Microservices Architekturen auf Basis von REST APIs und/oder Message Brokers (Kafka)
  • Hilfe bei der Migration/Umbau von Monolithen in Richtung Microservices und verteilte Architekturen
  • Beratung und Unterstützung bei der Migration/Verwaltung Ihrer Workloads in die/der AWS Cloud.
  • Beratung und Hilfe bei Etablierung von DevOps Praktiken und CI/CD Pipelines zwecks Steigerung der Value Delivery
  • Implementierung von AI-basierten Workflow Automatisierungen
  • Effiziente Kommunikation und agile Arbeitsweise
  • DevOps Mindset

Was mache ich gerade zwischen Projekten?
  • Weiterbildung (im Selbststudium): React, Python, AI relevante Themen
  • Prüfungsvorbereitung: AWS Certified AI Practioner

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2000

Sprachen

DeutschverhandlungssicherEnglischverhandlungssicherSpanischGrundkenntnisse

Projekthistorie

Freelance Senior Software Engineer

Car Industry

Automobil und Fahrzeugbau

250-500 Mitarbeiter

  • AI agentic coding using various models (Claude Sonnet/Haiku, GPT, Gemini, etc.)
  • Full stack development for new app features/services
  • Developed Spring batch/cron jobs
  • Performed code reviews
  • Increased code quality and test coverage
  • Took on DevOps tasks, maintenance of our Gitlab CI jobs and Helm deployments
  • Tech stack: IntelliJ, Java 17/25, Spring/Spring Boot 4, Liquibase, Hibernate, Junit/Mockito, REST, Maven, Oracle, Angular 19-21, npm/pnpm, Artifactory, Docker, Gitlab Pipelines, Helm, SonarQube, OpenShift, Jira/Confluence, Microsoft Teams, Azure (Blobstore, Keyvault, CLI), Github Copilot Chat/CLI

Freelance Java Senior Software Engineer

Öffentlicher Dienst

500-1000 Mitarbeiter

  • Maintenance/bugfixing for a legacy back-office application
  • Backend development for new features/services
  • Developed batch jobs
  • Performance analysis of SOAP services
  • Refactored/unified application logging
  • Wrote unit tests and increased code quality
  • Tech stack: IntelliJ, Java 8/17, Spring Boot/Web Flow/etc., JSF, JUnit, Mockito, SOAP, REST, Maven, Oracle, Docker, Jenkins, SonarQube, Bitbucket, Confluence, OpenShift, ArgoCD, Web Application Sphere, Microsoft Teams

Freelance Java Senior Software Engineer/Architect

EU/Member states collaboration project

Öffentlicher Dienst

1000-5000 Mitarbeiter

  • Maintenance of legacy Java applications and services
  • Development of new Java/Docker-based microservices and REST APIs
  • Frontend development for new backoffice web apps
  • Backend development
  • Planning/Setup of a Docker server and Docker registry
  • Contributions to the modernization and digitalization processes
  • Promotion of Agile practices (e.g. Kanban)
  • Tech stack: Java 8/11, JavaEE, JSP, Angular 10/Typescript, in-house frameworks, Spring Boot, Spring Web/Web Services/Data/JDBC, Wildfly, Hibernate, JUnit, Jackrabbit, SQL Server, MariaDB, MongoDB, Docker, Bitbucket/Gitlab, Jenkins, Maven, CentOS/Ubuntu, DDD, hexagonal architecture

Freelance Java Senior Software Engineer/Architect

Banking IT Services

Banken und Finanzdienstleistungen

500-1000 Mitarbeiter

  • Maintenance and refactoring of legacy Java applications
  • Maintenance of new Java and Kafka based event-driven microservices and HTTP/REST APIs
  • Development, provisioning and maintenance of company-internal Maven libraries
  • Frontend development for new Angular based securities web apps
  • Promote and cultivate a collaborative DevOps culture, improve the team’s value delivery
  • Tech stack: IntelliJ, Java 8, JAX-RS, in-house frameworks, Spring Boot (and its ecosystem), Quarkus, Maven, Angular 6, Tomcat/Jetty, Hibernate, SQL Server/DB2, Docker, Kafka, Jenkins, Bitbucket/GitLab, OpenShift, Prometheus, Grafana, Jira, Confluence, Microsoft Teams

Java Senior Software Engineer, CTO

Mobile Gaming Startup

Internet und Informationstechnologie

< 10 Mitarbeiter

  • Oversaw the internal IT, the software development efforts and external contractors
  • Modernized, improved and moved the gaming platform and our game to launch into the cloud
  • Migration of Java EE/JBoss services to Spring Boot/Kotlin/Docker based microservices
  • Implemented a HTTP/REST API for game tournament results
  • Researched and tested (proof of concept) different crypto wallet APIs
  • Integrated Coinbase APIs in our gaming platform to support in-game bitcoin payment transactions
  • Established a DevOps system for CI/CD to the Google Cloud Kubernetes cluster
  • Engineered a cloud-based centralized logging solution based on the ELK stack
  • Tech stack: IntelliJ, Java 8, Kotlin, Java EE, JUnit, JMeter, JBoss, Spring Boot/Web, Maven, HTML5, JS, Tomcat, JOQQ, Hibernate, PostgreSQL, Docker, Jenkins, Bitbucket, Spinnaker, Kubernetes, Kafka, ELK, GCP, Linux, Jira, Confluence, Microsoft Teams

Tech Lead, Software Architect, Release Manager

Sports Betting Industry

Internet und Informationstechnologie

50-250 Mitarbeiter

  • Tech lead of the web and mobile team
  • Coached and helped junior developers to better understand software engineering best practices
  • Crafted web and mobile based sports betting products
  • Implemented a HTTP/REST WebAPI-based middleware
  • Provided tech guidance and support for external development partners
  • Member of the company's Architecture Review Board
  • Established a TFS based build system for CI, release builds and deployment
  • Contributed major improvements to the company's API/WCF services performance and throughput
  • Prototyped a microservices based architecture with .NET Core, Docker and OpenShift (PaaS)
  • Tech stack: TFS, Visual Studio, C#, ASP.NET MVC/Web API, IIS, WCF, .NET Core, Docker, Angular, HTML5, JS, Flash, FlexUnit, xUnit, Moq, DotNetNuke, MSBuild, SQL Server, Linux, OpenShift, SonarQube, Git

Freelance Senior Software Engineer

Retail IT Solutions

Internet und Informationstechnologie

10-50 Mitarbeiter

  • Refactoring/Modernization of legacy ASP.NET applications and Java web applications/services
  • Tech stack: C#, ASP.NET Web Forms, WCF, EF, SQL Server, Java, JUnit, JSP, Servlets, Tomcat, MySQL, Git

Freelance Game Developer

Game Studio

Internet und Informationstechnologie

10-50 Mitarbeiter

  • Implemented game client and server features and unit tests
  • Participated in the game architecture design
  • Established and managed the CI/CD system and build/release cycles
  • Tech stack: C#, Flash, AsUnit, APlay Middleware, PostgreSQL, TeamCity, Facebook API, Jira, Subversion

Freelance .NET Architect

Travel Industry

Internet und Informationstechnologie

50-250 Mitarbeiter

  • Provided mentoring and technical evangelism in .NET
  • Designed and implemented a reference service architecture based on WCF services
  • Extended legacy Java services and applications
  • Tech stack: TFS, C#, ASP.NET Web Forms, EF, WCF, SQL Server, IIS, Java, Servlets, JSP, Tomcat, WIX

Freelance Software Architect, Tech Lead

Gaming and Entertainment

Internet und Informationstechnologie

< 10 Mitarbeiter

  • Architected and implemented a game management platform for online multi-player games
  • Integrated several 3rd party APIs (e.g. payment providers)
  • Provided mentoring and coaching for junior developers
  • Tech stack: TFS, C#, ASP.NET Web Forms, WCF, SQL Server, DevExpress, Subversion, CruiseControl.NET

Freelance Senior Software Engineer

IT Consulting

Internet und Informationstechnologie

10-50 Mitarbeiter

Development of a custom CMS solution for the food retail industry (TFS, C#, ASP.NET Web Forms, Oracle, JavaScript)

Freelance Senior Software Engineer

WKO

Öffentlicher Dienst

250-500 Mitarbeiter

Development of a web-based inflation calculator (C#, ASP.NET Web Forms, IIS, SQL Server, Excel)

Freelance Senior Software Engineer

Bank Retail Services

Banken und Finanzdienstleistungen

250-500 Mitarbeiter

Design/Development of Java/.NET based financial retail solutions (C#, Java, Swing, Servlets, C++, HTML/JS)

Zertifikate

AWS Solutions Architect Associate

AWS/Pearson

2024

AWS Certified Cloud Practioner

AWS/Pearson

2024

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