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Anastasiia WolfertzAW

Anastasiia Wolfertz

Senior IT Consultant Web Development

€720/day
Düsseldorf, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Anastasiia

Freelance Senior Web Developer with over 15 years of experience in developing modern web applications. Specializing in React, Angular, TypeScript, and scalable frontend architectures, as well as API integration and UX-oriented development. Works in a structured, quality-focused, and remote manner.
  • German

    Native or bilingual

  • English

    Fluent

  • French

    Fluent

  • Russian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • SüdLeasing GmbH (LBBW Landesbank Baden-Württemberg) | Halian GmbH
    Fullstack Development
    June 2023 - Today (3 years)
    Further development of web apps using Angular, Angular Material, TypeScript, Signals, NGXS Store, SCSS. Fullstack web development with a focus on frontend (Backend - Java Spring Boot). Development of Angular Camunda Form Builder for automatic form creation with Camunda Form Modeler. Integration of multiple RESTful services. Support of frontend infrastructure: NPM, Nx Monorepo, Microfrontend. Improvement of CI/CD processes: Azure DevOps, Pipelines. Automation of business processes: Integration of Camunda processes (BPMN). Bug fixing. Collaboration with UX experts (Figma). Creation and maintenance of Storybook. Release management with Jira and Azure DevOps Tools. Unit Testing (Jest), End-to-End (E2E) Testing (Cypress). Improvement of codebase architecture, refactorings, and code reviews. Creation of documentation, development standards, and architecture descriptions. Creation and maintenance of frontend community within the company. Collaboration with the business department, discussions regarding requirements and business problems. Working in an Agile Scrum team together with Product Owners, Business Analysts, Software Architects.
  • Porsche | MHP Management- und IT-Beratung GmbH
    Further Development of the Design System
    December 2022 - June 2023 (6 months)
    Further development of the design system based on Web Components with Shadow DOM, using Stencil, TypeScript, SCSS. Integration of Web Components into modern frameworks: Angular, React, and Vue. Development of Angular, React, and Vue components. Server-Side Rendering (SSR) with Node. Support for NextJS, Remix, Nuxt.js. Web Accessibility (WCAG 2.1 AA) / Accessibility optimization. Bug fixing that occurs in end-user applications.
  • GMX.NET | United Internet AG | Modis GmbH
    (Freelancer) WEB.DE
    December 2021 - November 2022 (11 months)
    Developing Web Components using Stencil (React-like), Redux, Saga, TypeScript, NPM, Puppeteer, Rollup, SCSS, and Shadow DOM. Migration of existing monolithic functionality (Java 8, Apache Wicket 7, Spring, Hibernate 5) to a new architecture (Web Components using HTML DOM Events + Microservices / Spring Boot). Collaboration with various IT experts to define and implement new microservices based on existing Java RESTful API services (DDD - Documentation-Driven Development). Further development and expansion of NodeJS Express.js server & Akamai. Setting up and expanding development and deployment infrastructure with Docker, GitLab CI/CD, Auto DevOps, and Kubernetes. Integration of Sentry CLI into CI/CD (DevOps) to automatically create Sentry reports and optimize code quality. Configuration of Sentry dashboards, monitoring of Sentry Events / Errors / Performance Reports. Quality assurance through automated (Jest) tests. Participation in multiple security (Pentest) trainings / analysis & improvement of software security. Conducting code reviews and brainstormings with front-end and back-end developers. Working in cross-functional teams with developers, product management, UI/UX designers, and QA using agile methodologies, with Scrum & Kanban. Communication with Product Owners and High-Level Managers regarding OKRs (Objectives and Key Results) & RoadMaps. Jira, Confluence, integration of Jira into Gitlab & CI/CD, automatic creation of release notes, writing documentation. Performance optimization, bug fixing, implementation of tracking requirements. Code modernization / refactoring / improvements of project architecture and quality / design patterns / TSLint / SonarQube. Integration of Grafana Observability & Monitoring platform using Prometheus.

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Education

  • Computer Science Studies
    Informatikstudium
  • (B.Sc.)
    Ural Federal University
    2012
    (B.Sc.

Skill set

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