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Halil – Java, React, Spring Boot, experts in Lemon.io

Halil

From Turkey (GMT+3)

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Full-stack Web DeveloperSenior
Hire developer
9 years of commercial experience
Banking
Hospitality
Management
Marketing
Military
Platforms
Lemon.io stats
1
projects done
1208
hours worked
1
offers now 🔥

Halil – Java, React, Spring Boot

Halil has been coding for 9 years, which helped him gain extensive full-stack knowledge and a strong understanding of the entire development lifecycle. He can find a perfect code solution for projects with various degrees of complexity and make things work smoothly. Halil is passionate about making technology work for people and loves nothing more than solving technical challenges. No doubts about his great analytical and math skills, as he has a bachelor’s degree in Computer Engineering.

Main technologies
Java
8 years
React
4 years
Spring Boot
5 years
Spring
8 years
Node.js
4 years
Next.js
4 years
Additional skills
Angular
AWS
Python
Microsoft Azure
MySQL
SQL
Kubernetes
Kafka
ElasticSearch
Microservices
.NET
Express.js
JavaScript
MongoDB
DynamoDB
GraphQL
PostgreSQL
Azure DevOps
Typescript
CI/CD
Terraform
Docker
C#
Rewards and achievements
Tech interviewer
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior Software Engineer
Apr 2023 - Dec 20238 months
Project Overview

Developing services and new features for the platform that handles marketing, customer segmentation, and campaigns for its brands and handles their offer and campaign management. The project included adding different features for the customers that are used both on the platform's front end and via its backend APIs that are programmatically consumed by the clients.

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Responsibilities:
  • Fixed various bugs;
  • Added new API features and extending the usability and performance of the current APIs;
  • Wrote unit and integration tests;
  • Added new features for campaign management and package/plan management;
  • Added features for both the backend and frontend.
Project Tech stack:
Java
Spring Boot
Scala
React
JavaScript
Cassandra
PostgreSQL
SQL
AWS
Senior Software Engineer
Jan 2022 - May 20231 year 4 months
Project Overview

It's a hospitality application to manage cafes and restaurants with stock, payment, and accounting management.

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Responsibilities:
  • Migrated monolithic app into microservices;
  • Run deployment using automated CI&CD and tests;
  • Retrieved data from external partners such as payment gateway providers and fed data into MySQL and Kafka;
  • Implemented REST APIs secured by OpenID protocol using tokens and Spring Security.
Project Tech stack:
Java
Spring Boot
WordPress
MySQL
Apache Kafka
ElasticSearch
Kubernetes
AWS
Terraform
CircleCI
Groovy
React
JavaScript
Spring MVC
Spring Security
API
API Gateway
Node.js
Python
Typescript
CI
CD
Next.js
Senior Full-Stack Developer
Apr 2021 - Jan 20229 months
Project Overview

It's an application to manage daily file imports and funding adjustment records.

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Responsibilities:
  • Migrated database change management into Liquibase;
  • Arranged the CI&CD lifecycle;
  • Wrote the automated deployment scripts.
Project Tech stack:
Angular
Java
JavaScript
Spring Boot
Spring Batch
Spring Security
AJAX
API
API Gateway
Microsoft Azure
JUnit
Mockito
React
Liquibase
Oracle
SQL
TeamCity
CI
CD
SonarQube
Git
Bitbucket
Typescript
Kubernetes
Docker
Apache Kafka
Kafka
Next.js
Software Engineer
Sep 2018 - Apr 20212 years 7 months
Project Overview

It's a web application for investment banking.

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Responsibilities:
  • Configured microservice architecture based on Spring Cloud;
  • Oracle DB support and Autosys job maintenance to ensure data quality of the outputs of scheduled jobs that turn into reports for various resources in the company.
  • Did database migration and change management by Liquibase;
  • Prototyped the migration of the existing on-premises microservices to Azure;
  • Built DevOps pipeline using Gitlabs;
  • Wrote integration tests.
Project Tech stack:
React
Spring Boot
Angular
.NET
C#
JUnit
Mockito
Liquibase
Oracle
TeamCity
CI
CD
Microsoft Azure
GitLab
Spring Batch
Software Engineer
Dec 2015 - Sep 20182 years 8 months
Project Overview

It's a military situational analysis and integration tool.

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Responsibilities:
  • Developed an app for Android, Windows Toughbook, and desktop versions;
  • Worked on both front-end and back-end and produced reports for business intelligence;
  • Implemented a position-tracking web application using microservices architecture and ActiveMQ communication.
Project Tech stack:
Java
Cordova
CSS
HTML
React
Node.js
Express.js
Liquibase
Oracle
JavaScript
React
JavaScript
Git
ActiveMQ
Kafka
HTML
CSS
Java
MongoDB
Jenkins
Angular JS
GitLab
Ionic
Redux

Education

2015
Computer Engineering
Bachelors

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