In the beginning, i developed native drafts on web for mobile app. I was a bit biased towards mobile app development back then. We were already able to create a mobile view on the web, I used to think that there is no need for mobile applications. Then, a very important difference came to my mind, that mobile applications can be used without internet.

Then I got a comprehensive project job. Since I have PHP foundation, I decided to develop the project as LAMP Stack. I've learned enough MySQL to see what I need. I wrote more code than I needed, and now that I look back, I understand the importance of clean code and design patterns. I also applied responsive web design for the first time in this project.

My favorite thing is to be able to apply what I learned in another field in my own field. I experienced the most typical example of this here. I have used the components structure I learned from reactJS with a cleaner code and file structure in PHP. Thus, the idea of writing multiple lines of code, which I was proud of in my previous freelance project, turned into creating the project with the least amount of code.

In this project, I followed the SDLC method to avoid the chaos I experienced in the previous project. This is how I usually learn by learning from my mistakes.

Also, because Corporate Website jobs were coming in and they were often requested "urgently", I was quickly creating them with wordpress. But whenever I use site builders like wordpress, I feel like my freedom is restricted.

Apart from these, I also got a data visualization job. Getting started with another programming language was not difficult at all, once I grasped the programming basics. I completed the project by analyzing the data on graphs with Matlab.

I started to work as a back-end developer in a major project called baugo.online within BAU Global Online. To get this job, I completed the case study by developing a simple restAPI with pure PHP. Firstly, I started by learning about the technologies that were used and planned to be used in the company. I learned CodeIgniter, a PHP framework, and MVC architecture. I can say that it is these architectures that make software one of the engineering disciplines.

Then I learned how to write restAPI and Auth procedures such as Authentication & Authorization with these and integrated the OAuth2.0 library. Although we can keep the session on the server side in PHP on the web, I have grasped the importance of JWT with Authentication procedures.

The sine qua non of restAPI are CRUD operations. In order to respond to front-end requests, we need to present our endpoints with Auth filters if necessary. Behind these are our CRUD operations that will enable interaction with our database according to the methods of the requests.

A back-end developer must have control over the entire project. Therefore, it will help as long as he has knowledge about other fields from time to time.

On this occasion, I got involved in the vueJS work of the front-end team. Since I have previous experience with reactJS, I easily understood the component structure. Unlike Prop/State parameters in ReactJS, parent/child parameters are more useful to me. During this process that I supported the front-end team, we had minor problems in building and exporting the vueJS project. I can say that it took us days to define a baseURL for assets :D . While developing our vueJS projects, our paths crossed with typescript, but I can't say that I have completely switched from javascript to typescript yet.

Later on, I had experience in CI/CD Pipelines via Gitlab. After pushing a new update to the project, I participated in devops processes to ensure that it was automatically built and deployed. Our PHP projects didn't need a build, but I wrote some YAML scripts to enable them to be deployed via ftp connection.

On the other hand, we completed and published our main project, baugo.online. Initial feedback was positive and we crowned our success by ranking 1st in the education category at the "20. Altın Örümcek Ödülleri" competition.

I continued to use what I learned in my own work. Now I was able to develop projects faster with less complexity in coding. I have made the projects more sustainable by avoiding repetitive codes and by the advantages of the relational database.

When developing a project, there are 2 stages. The first is to develop from scratch and deploy the project. The second is to maintain the project after it goes live and continue to develop the requested updates. The more robust the first stage, the less difficulties we will encounter in the second stage. If a sustainable project is not developed from the beginning, that project starts to get stuck after a point and it may be necessary to start all over again.

Every company has its own culture of buback-endsiness management. Our project management method here is Agile. We progressed as springs by sharing tasks with Jira software. Also, I realized that working with branches and pull requests is very important for team development.

New technologies are often used by startups, and I've been involved in this process. To learn NodeJS and MongoDB, I developed a simple restAPI with authentication procedures and CRUD endpoints. Now I was ready to get involved in the main project.

We started the new project with our senior's first commit push using the microservice layered architecture. Since we developed the project with NextJS, we were able to carry out back-end and front-end developments on the same repo. While we, as the Back-End team, developed restAPI, the Front-End team simultaneously created the user interface of ReactJS in NextJS. Of course, our co-working space was Postman.

On the back-end side, we have developed restAPI in accordance with the service layered architecture with Models, Repositories, Services, Controller and handlers (api endpoints) containing CRUD methods for each table. I also defined database connections, authentication and user role filtering with Middlewares. Although we need a relational database from time to time, we have successfully managed data management using MongoDB and NoSQL.

Since I had experience with authentication before, I took on the task of authentication, but I had a painful process due to a small mistake. I used Firebase because we wanted to have SMS authentication. I used firebase library on the Front-End side because I needed to use a two-stage form. I lost some time because I tried to use the firebase-admin library on the Front-End side, which I needed to use on the Back-End side. Although it was not clear from the bug reports, luckily we figured out the cause of the problem and fixed it. After completing the access_token validation methods, we defined the authentication filtering for the required endpoints with ExpressJS.

While there was a short time left for the delivery date of the project, we had an important shortcoming. I quickly developed this chaos instant payment service by taking on the task. Since I had experience on iyzico integration before, I was able to quickly adapt to a different payment service. After a difficult development process, we deployed the project by AWS with minor shortcomings. One of these shortcomings was the need to separate the development environment from the product environment. I solved this problem in the export phase by examining the Pipelines logs.

When you contribute to a big project, you embrace that project. Even though I was temporarily set aside for internship, I was following the status of the project during this time. After completing my internship, I started Bau Global Online again as a Part-Time Junior Back-end Developer.

After getting involved in the project again, I did the best thing I ever did. I included the applicable methods that I just learned in the project and the team. Thus, we created a more efficient development environment. In addition, I taught the technologies we use to newly joined interns and defined some tasks for them to improve themselves.

Over time, I made developed to our main project, baugo.online, by adding new features and improving the existing structure. I also contributed to side projects simultaneously as needed. One of them was etkilesimlikitapokuma , which is a Tübitak project.

I also noticed this while messing around with the database side. By reducing many things we do on the back-end side to a single SQL query, we can significantly increase performance with less effort. Then I started to research what SQL can do and I can say that my horizons have expanded.

I mentioned my opinion on mobile applications in the previous topic. Maybe I tried to develop Native mobile application this time in case my ideas change again. The development process was a bit of a hassle because it took me some time to adapt to Kotline and Android Studio. Actually, a Cross Platform mobile application is being developed with Kotlin, but due to the content of the course, I turned to Native application development in my first project.

One of my difficulties was using a comprehensive editor. Android Studio was a bit complicated as I got used to the simplicity of VS Code. I've been trying to do it with VS Code lately so I can keep track of everything together. Another difficult point was the transfer of parameters between the components. I solved it with some effort. My first impressions are as follows: I think I prefer React Native because of the flexibility provided by javascript.