03/11/2026 updated

IK
Premium member
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Senior Frontend/Fullstack Developer & Architect

Bratislava, Slovakia Dipl. Engineer in IT
Bratislava, Slovakia Dipl. Engineer in IT

Profile attachments

IgorKostic.pdf

About me

Enthusiastic frontend and fullstack developer & architect with a passion for creating innovative solutions. Demonstrated expertise in React, Angular and Java/SpringBoot, with a track record of successfully leading development projects from prototype to GoLive.

JavaScriptApplication Programming Interfaces (APIs)Architectural DesignBankingSoftware QualityContinuous IntegrationDevOpsPrototypingTesting StrategiesTypeScriptTypingWeb Content Accessibility GuidelinesWeb ApplicationsTestingEnterprise Application PlatformReact.jsDelivery PipelineCypress (Programming Language)AngularJSKubernetesGraphQLFront End Software DevelopmentRegion ManagementReact ReduxRestful ApiDockerJenkins
React Development
Advanced React development with expertise in Hooks, Context API, and Redux/RTK for state management. Experience building complex applications from prototype to production.

Frontend Architecture
Design and implementation of scalable frontend architectures including micro frontend solutions and component libraries that support multi-tenant applications.

Accessibility Implementation
Expertise in WCAG standards implementation, creating accessible user interfaces and training teams on accessibility best practices.

JavaScript/TypeScript
Proficiency in modern JavaScript and TypeScript for building robust web applications with strong typing and advanced features.

Angular Development
Experience with Angular framework including migration from older versions, building enterprise applications for banking and industrial sectors.

GraphQL & REST API Integration
Implementation of GraphQL APIs and REST services for efficient data fetching and management in frontend applications.

DevOps & CI/CD
Knowledge of Docker, Kubernetes, Jenkins and CI/CD pipelines for continuous integration and deployment of frontend applications.

Testing Methodologies
Implementation of comprehensive testing strategies using Jest, Cypress, and React Testing Library for ensuring code quality.

Languages

GermanFluentEnglishFluentSlovakNative speaker

Project history

Fullstack Development - Angular/Java

Dedalus HealthCare GmbH

Pharmaceuticals & Medical Technology

Healthcare information systems and clinical software
  1. Maintained an existing application and developed new pages
  2. Helped the team to improve the code quality and processes
  3. Angular, TypeScript, REST, Java, Cypress, Scrum, Linux, Docker, Git

React lead developer & architect

Condor Flugdienst GmbH

Transport & Logistics

Led the development of Search Flight Page, developed new Search Flight Widget from prototype to GoLive, worked on shared components and Storybook pages, implemented accessibility features and trained teams on WCAG standards.

Angular & Java senior developer & architect

UniCredit Bank AG
Lead designed and developed new Angular application as UI for legacy bank systems, supported backend team with REST microservices based on SpringBoot, shared knowledge and trained coworkers in Angular and Spring development.

React senior developer

YARA GmbH & Co. KG
Developed a web application for satellite image analysis technology, used React with latest features, Next.js and other libraries, created GraphQL API and implemented map views with react-mapbox-gl.

Angular senior developer

Porsche AG
Refactored and optimized a web application, migrated from Angular 8 to Angular 13, developed new pages and features, presented new ideas and improvements.

React & Java fullstack developer

SMATRICS GmbH & Co KG
Developed prototype for car charging network, handled communication between e-cars and charging stations, security certificates, and data management. Responsible for conception, development, automated testing, and deployment.

Vue.js senior developer

Fiducia & GAD IT AG
Developed component library for bank software used by several teams, performed analysis, prototyping, development, unit testing, TDD, pair-programming, solved complex technical problems involving web socket communication.

React & Java fullstack developer

MAN Truck & Bus GmbH
Increased cross-team productivity by developing a prototype for the MAN and SCANIA collaboration portal, managed React frontend & Java backend development in AWS for large-scale projects.

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