I build web applications for real work.
Full Stack Engineer.
I'm Stelios Kitziris, a software engineer, and I have been developing applications professionally for more than 12 years. During that time I have worked on more than 40 projects, from small web applications and SaaS products to projects for organizations such as OPAP and adidas.
About me
Stelios Kitziris.
I am Stelios Kitziris, a Full Stack Engineer. I started professionally as a developer and over the years I have worked across different kinds of applications, teams and projects. I specialize in Vue 3 on the frontend. My work also covers server-rendered applications, Node.js and Laravel backends.
Through OFFLINE I present selected work from across my career, including product modernization, migrations and internal-process automation. The portfolio includes 40+ projects for startups and established organizations across Europe and the US.
That experience helps me look at a project as a whole: not only the code, but also the design, the user experience, the technical choices and how all of them connect to what actually needs to be built. I optimize for clarity, because maintenance and performance work both get harder when the code hides its intent.
Away from the screen: gaming, guitar, cycling. The guitar is going better than the cycling.
The stack.
A decade across frontend, backend, DevOps and tooling. I choose the stack around the application and the team that will maintain it.
Core expertise
What I build and modernize.
Improving or gradually migrating existing applications without assuming a full rewrite is necessary.
Turning repetitive business processes and disconnected tools into applications that make daily work easier to manage.
Designing maintainable frontend structures, reusable components and clear boundaries for products that need to keep evolving.
Building or extending the backend services and APIs needed to support the product, when the project requires full-stack ownership.
The
chronicle.
A decade of shipping production software across gaming, fintech, travel, public sector, and digital agencies.
Established a new department within engineering and set architecture standards for new projects. Built an internal UI component library and designed in-house web applications with Node.js. Led projects from planning through deployment and improved legacy systems.
Worked with clients to identify business requirements. Delivered full-stack features across several products using Node.js, Express.js, React.js and both relational and non-relational databases.
Worked on web & mobile application architecture and development using Laravel, React.js, Node.js and Cordova.
Developed web applications for a major international construction & engineering group using Laravel and Angular.js.
Built web applications for one of Greece's largest digital media groups using the Angular.js framework.
Website development and ongoing support using WordPress.
Where it
started.
Get a first estimate for your
project
Use the form to share the basic information and start the estimation process.
My services.
Services for building and modernizing web applications, turning Excel-based workflows into software and adding AI capabilities to new or existing products. Choose the service that best matches your project.
Improving and gradually modernizing an existing application without unnecessary rewrites.
Explore migration →New web applications and SaaS products designed around the product and business workflow.
Explore web apps →Replacing a business-critical spreadsheet with a proper multi-user web application.
Explore dashboards →Internal applications and dashboards that bring daily operational data into one place.
Explore migration →