About
my-photo

Hello again, I’m Konstantin Ionov, backend and frontend developer from Uzbekistan - Tashkent. I have experience in creating websites, but this is not my main job. For the most part, I devote time to creating REST APIs and developing financial technologies in Uzbekistan, working in Tashkent with large banks. The main activity is the implementation of payment systems in banking applications that facilitate the transfer of funds between application customers.

  • Age: 23
  • Residence: Uzb
  • Freelance: Available
  • Address: Uzbekistan, Tashkent
  • Phone:+998 97 703 40 24
  • E-mail:kstionov@gmail.com
Services
Web Development
Experienced in HTML, CSS, JavaScript, and PHP. Specialized in building high-performance, responsive websites and web applications using modern frameworks like React, NodeJS, and Laravel. Adept at optimizing web applications for maximum speed and scalability.
Backend Java Development
Skilled Java developer with solid experience in building robust, secure and high-performing backend applications utilizing frameworks like Spring and Hibernate. Proficient in creating RESTful APIs, managing relational databases, and integrating third-party services. Strong understanding of software architecture and design principles.
DevOps (Linux focused)
Experienced DevOps engineer with a focus on Linux systems. Proven expertise in environment automation, CI/CD, cloud infrastructure, and site reliability engineering. Proficient with tools such as Docker, Jenkins, Ansible, and Kubernetes. Strong understanding of system operations and scalability.
Penetration Testing
Accomplished penetration tester with proficiency in cybersecurity defense and offensive tactics. Expertise in conducting comprehensive penetration tests to identify system vulnerabilities and ensure robust security. Skilled in using tools like Metasploit, Burp Suite, and WireShark. Focused on maintaining the highest level of security for system infrastructure and data.
Experience
2019 - Present
Java backend Developer
Development of mobile applications backend
2016 - 2019
Freelance Web developer
Development and support of websites
Education
2017 - 2019
Mirzo-Ulugbek Professional College of Information Technologies
Сomputer engineering
2018 - 2019
JavaRush
Studying the Java development course Java Rush.
2019 - 2020
Netology Course - Java developer
Coursework - Git, Spring Boot, K8S, Java 17, Java Core, JWT, and Collections.
2021 - 2023
Baeldung
Spring Security , OAuth2, Rest
2022 - 2023
Visa University
Visa Risk Manager
2022 - 2023
Visa University
Best Practice: Diving into Visa Billing Statements (all regions except Europe)
2022 - 2023
Visa University
Edit Package Fundamentals
Skills
  • Web Design
    90%
  • Design API
    80%
  • Java
    95%
  • Graphic Design
    55%
Languages Skills
  • English
    90%
  • Russian
    100%
  • Uzbek
    55%
Additional Information

Experience with P2P, B2C e-commerce
• Experience working with Agile methodologies.
• Ability to provide technical leadership to two scrum teams
• Payment processing background
• Expertise with the Java 8 platform or higher
• Expertise with Spring, and Apache frameworks
• Experience in building Microservices, specifically with HTTP, REST, JSON
• Experience in UI based technologies like HTML5, CSS3, JS, JQuery
• Expertise with Spring JPA and Hibernate frameworks
• Proficient in version control tools like GIT, build automation tools such as Maven and Jenkins, or similar.
• Proficient in API Development using SOAP or REST, JSON, and XML.
• A deep understanding of end-to-end software development in a team, and a track record of shipping software on time
• Solid experience in frameworks like Spring Boot, Sprint MVC, JPA, Hibernate.
• Strong technical and business vision
• Good understanding of Object-Oriented Concepts, Service Oriented Architectures, Distributed Systems Design Concepts and Computer Science fundamentals
• Expertise in algorithms
• Understanding of Linux System
• Encryption Security Technology like SSL and IPSEC
• Experienced navigating and managing application and file operation in Linux environment
* Payment card security expert with PCI DSS proficiency. Successfully implemented PCI DSS compliance projects, with experience in security audits, risk assessment, and security management.

Services
Web Development
Experienced in HTML, CSS, JavaScript, and PHP. Specialized in building high-performance, responsive websites and web applications using modern frameworks like React, NodeJS, and Laravel. Adept at optimizing web applications for maximum speed and scalability.
Backend Java Development
Skilled Java developer with solid experience in building robust, secure and high-performing backend applications utilizing frameworks like Spring and Hibernate. Proficient in creating RESTful APIs, managing relational databases, and integrating third-party services. Strong understanding of software architecture and design principles.
DevOps (Linux focused)
Experienced DevOps engineer with a focus on Linux systems. Proven expertise in environment automation, CI/CD, cloud infrastructure, and site reliability engineering. Proficient with tools such as Docker, Jenkins, Ansible, and Kubernetes. Strong understanding of system operations and scalability.
Penetration Testing
Accomplished penetration tester with proficiency in cybersecurity defense and offensive tactics. Expertise in conducting comprehensive penetration tests to identify system vulnerabilities and ensure robust security. Skilled in using tools like Metasploit, Burp Suite, and WireShark. Focused on maintaining the highest level of security for system infrastructure and data.
Languages Skills
  • English
    90%
  • Russian
    100%
  • Uzbek
    55%
Coding Skills
  • Java - SpringBoot
    95%
    95%
  • PostgreSQL
    75%
    75%
  • Linux
    70%
    70%
  • HTML / CSS
    95%
    95%

E:kstionov@gmail.com

T:+998 97 703 40 24

E:kstionov@gmail.com

T:+998 97 703 40 24