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I'm Zille Abbas, a Senior Frontend / Mobile Engineer based in Berlin with 7+ years delivering scalable mobile and web applications. I specialize in React Native, React, and GraphQL-based architectures, and I enjoy turning complex problems into robust, user-friendly experiences. I thrive in agile, cross-functional teams and love collaborating with product managers, designers, backend engineers, and QA to ship high-quality features. My focus areas include performance optimization, code quality, and long-term technical planning, as I help teams migrate to modern stacks and build maintainable architectures.…I'm Zille Abbas, a Senior Frontend / Mobile Engineer based in Berlin with 7+ years delivering scalable mobile and web applications. I specialize in React Native, React, and GraphQL-based architectures, and I enjoy turning complex problems into robust, user-friendly experiences. I thrive in agile, cross-functional teams and love collaborating with product managers, designers, backend engineers, and QA to ship high-quality features. My focus areas include performance optimization, code quality, and long-term technical planning, as I help teams migrate to modern stacks and build maintainable architectures.

Zille Abbas

Front-End Developer, Full Stack Developer, Web Developer, +4

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I'm Zille Abbas, a Senior Frontend / Mobile Engineer based in Berlin with 7+ years delivering scalable mobile and web applications. I specialize in React Native, React, and GraphQL-based architectures, and I enjoy turning complex problems into robust, user-friendly experiences. I thrive in agile, cross-functional teams and love collaborating with product managers, designers, backend engineers, and QA to ship high-quality features. My focus areas include performance optimization, code quality, and long-term technical planning, as I help teams migrate to modern stacks and build maintainable architectures.…I'm Zille Abbas, a Senior Frontend / Mobile Engineer based in Berlin with 7+ years delivering scalable mobile and web applications. I specialize in React Native, React, and GraphQL-based architectures, and I enjoy turning complex problems into robust, user-friendly experiences. I thrive in agile, cross-functional teams and love collaborating with product managers, designers, backend engineers, and QA to ship high-quality features. My focus areas include performance optimization, code quality, and long-term technical planning, as I help teams migrate to modern stacks and build maintainable architectures.

Available to hire

I’m Zille Abbas, a Senior Frontend / Mobile Engineer based in Berlin with 7+ years delivering scalable mobile and web applications. I specialize in React Native, React, and GraphQL-based architectures, and I enjoy turning complex problems into robust, user-friendly experiences.

I thrive in agile, cross-functional teams and love collaborating with product managers, designers, backend engineers, and QA to ship high-quality features. My focus areas include performance optimization, code quality, and long-term technical planning, as I help teams migrate to modern stacks and build maintainable architectures.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

German

Beginner

Work Experience

Senior Software Engineer – Mobile / Frontend at Kollex GmbH

August 1, 2022 - Present

Feature development and production bug fixes for a production-grade React Native application (iOS & Android). Supported migration of the product from older React Native versions to newer releases and assisted the team in a complete application rewrite. Agile methodologies to deliver efficient and scalable features with rapid iteration cycles. Improve application stability, performance, and monitoring using DataDog and feature flags. Collaborate closely with product managers, designers, backend, and QA teams in agile environments. Contribute to architectural decisions and long-term technical planning. Optimized mobile app performance to enhance responsiveness and efficiency.

Senior Software Engineer – Mobile at Flink SE

January 1, 2022 - July 1, 2022

Developed and scaled internal Android applications supporting warehouse and logistics operations. Led technical discussions and implementation of new features. Refactored and optimized existing codebases for performance and maintainability. Produced technical documentation and reports for stakeholders and management.

Senior Software Engineer – Frontend / Mobile at Emumba

September 1, 2019 - November 1, 2022

Built and maintained mobile applications using React Native and web applications using React. Integrated third-party APIs, analytics, and monitoring tools. Managed app deployments to Apple App Store and Google Play Store. Participated in system design, architecture discussions, and technical decision-making.

Software Engineer – Mobile / Frontend at Graana Pvt. Ltd.

April 1, 2017 - September 1, 2019

Developed Android and iOS applications using React Native and Ionic. Implemented new features and reusable UI components. Worked with Firebase (Authentication, Firestore, Cloud Functions). Supported code quality through reviews and collaboration with team members.