Freelancer profile translated to English.
Back to original languageAbout Julian
As aSenior Full-Stack Engineerwith over **5 years of experience**, I help companies develop robust B2B systems, modernize legacy applications, and build innovative web solutions from scratch.
My approach combines deep backend knowledge (Java/Spring) with modern frontend expertise (React, Next.js, Vue) and a strong DevOps mentality.
Why I am the right partner for your project:
- Technical Ownership & Leadership: In my role as Tech Lead (e.g., at Lufthansa Industry Solutions), I not only wrote code but also made architectural decisions, optimized CI/CD pipelines, and provided technical leadership to teams.
- Legacy Modernization: I have proven that I can transition complex legacy systems (e.g., Java Swing) into modern, modular web architectures without disrupting ongoing operations.
- Full-Stack & Cloud Native: From database modeling (PostgreSQL, MongoDB) to cloud deployment (Azure, AKS, Docker) and high-performance frontend – I cover the entire lifecycle.
- Innovation & AI: With projects like “ThaiCondoAI”, I implement modern features like Semantic Search (RAG) and OpenAI integrations to create real added value through Artificial Intelligence.
My Focus Areas:
- Backend: Java (Spring Boot 3, Cloud), Node.js, Express.
- Frontend: React (incl. v19), Next.js, TypeScript, Vue.js, Tailwind CSS.
- Cloud & DevOps: Microsoft Azure (AZ-204 certified), Kubernetes (AKS), Docker, Terraform, GitLab CI/CD.
- Methodology: Domain-Driven Design (DDD), Agile/Scrum, Clean Code, Mentoring.
I am accustomed to quickly familiarizing myself with complex domains and finding technical solutions that remain maintainable in the long term. Whether as reinforcement for your existing team or as a technical lead for a new product – let's discuss how I can support you!
English
Native or bilingual
Thai
Basic
German
Native or bilingual
Remote only
Primarily works remotely
Experience
- Lufthansa Industry Solutions,IT Consultant / Software DeveloperJuly 2022 - Today (3 years and 11 months)Hamburg, Germany• • Tech Lead & Architecture: Responsible for the design and architecture of critical microservices in the aviation environment. Establishment of coding guidelines and execution of code reviews to ensure software quality.• • DevOps Transformation: Building an observability platform (Grafana, Prometheus, ELK) and modernizing CI/CD pipelines (GitLab), which significantly increased deployment frequency and reduced mean time to detect (MTTD).• • Mentoring: Onboarding and technical leadership of junior developers, as well as technical consultation with stakeholders on roadmap design.• • Tech Stack: Java 17/21, Spring Boot 3, Azure Kubernetes Service (AKS), Docker, Terraform.
- Inmed GmbH,Software DeveloperJuly 2020 - June 2022 (1 year and 11 months)Hamburg, Germany• • Modernization of a legacy Swing application towards a modular web architecture (Vue.js/React) during ongoing clinic operations (300+ clients).• • Implementation of security features (2FA, RBAC) and internationalization of the platform.• • Development of a web platform for rehabilitation data management and quality reporting.
- (NDA)Senior Full-Stack EngineerJanuary 2025 - Today (1 year and 5 months)Marketing: User acquisition for a landing page.• • Stack: React 19, TypeScript, React Native (Expo), Firebase, Tailwind, Vite, Vitest, CI/CD.
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Education
- Developing Azure Cloud SolutionsMicrosoft2023Developing Azure Cloud Solutions