Contact information

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You can get this candidate's contact information from https://www.work.ua/resumes/1264645/

Work experience

Головний експерт

from 06.2010 to 01.2026 (15 years 8 months)
Райффайзен Банк, Київ (Фінанси, банки, страхування)

2010 – 2026 — Chief Expert, Raiffeisen Bank JSC
2014–2022 — development and support of business process automation services for bank divisions. Personally developed (fullstack) from scratch and put into operation a web application (ASP.NET / MVC / C# / MS SQL Server, Entity Framework, JS, JQuery, SignalR, etc.). Responsibilities included:
•Designing and developing solutions according to specifications
•Participation in project-related meetings
•Managing development processes (i.e., the application’s end-to-end implementation)
•Full responsibility for the results of my own work
•Further development, technical and administrative support, system migrations, etc
2023 —continued application development in Java and Spring Boot using microservice architecture (API Gateway, Discovery Server, Config Service, Load Balancing, FeignClient, WebClient, Spring Security (OAuth2/OIDC), Resilience (Resilience4j), Kafka, Swagger, Prometheus/Grafana, Docker, K8s, etc.).

Education

Київський національний університет імені Тараса Шевченка

Радіофізичний, Київ
Higher, from 1996 to 1999 (3 years)

Additional education and certificates

Java pro

2022, 6місяців

Knowledge and skills

• ASP.NET MVC
• MS SQL Server
• C#
• Java
• Spring Boot

Additional information

Ivan Koliaka
Date of birth: 25 July 1976
Location: Kyiv region
Phone: [open contact info](look above in the "contact info" section)
Email: [open contact info](look above in the "contact info" section)
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Work Experience
2010 – 2026 — Chief Expert, Raiffeisen Bank JSC
2014–2022 — development and support of business process automation services for bank divisions. Independently designed and developed (full-stack) from scratch and successfully deployed a web application for internal business process automation (task tracking, document management, property management, committee automation, court case management, reporting, etc.). The application was developed using the following technology stack: ASP.NET MVC, C#, MS SQL Server, Entity Framework, JavaScript, jQuery, SignalR, etc. The application has been actively used by bank divisions for nearly 10 years. Key responsibilities:
•Designing and developing solutions according to business and technical requirements
•Participation in project-related meetings
•Managing the full development lifecycle (end-to-end implementation)
•Taking full ownership and responsibility for deliverables
•Providing further development, technical and administrative support, and system migrations, etc
2023 — Continued application development using Java and Spring Boot within a microservices architecture (API Gateway, Discovery Server, Config Service, Load Balancing, FeignClient, WebClient, Spring Security (OAuth2/OIDC), Resilience (Resilience4j), Kafka, Swagger, Prometheus/Grafana, Docker, K8s, etc.).
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Technical Skills
Microsoft Stack
•ASP.NET (MVC, Core), C#
•MS SQL Server, TSQL, Entity Framework
•JavaScript / jQuery, Ajax
•HTML, CSS, Bootstrap
•SignalR and others
Java & Related Technologies
•Spring Boot (Spring Data JPA, Spring Cloud, Project Reactor, Spring Security (OAuth2/OIDC))
•JDBC, JUNIT, Mockito, Swagger
•Postgresql, Mysql, SQL
•Kafka, RabbitMQ
•Monitoring with Prometheus / Grafana
•Docker, Kubernetes, Helm, ArgoCD
•Familiarity with design patterns, Understanding of microservices architectural principles
•Understanding of Git workflows, testing, CI/CD, Jira
•AI
•Big Data basics (Spark, Airflow, Jupyter Notebook, Athena)
•AWS
•Keycloak
•Basic knowledge of other languages and frameworks, including Python, React and others
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Education
1999 — Master’s degree, Faculty of Radiophysics, Taras Shevchenko National University of Kyiv.
Courses / Certificates: Java-Pro (2022, ITEA), C# course, ASP.NET MVC course
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Career Objective
Seeking a position related to Java development (but I'm also considering the option of using the c#/ASP/MSSQL stack).