Development and optimization of scalable Web Applications with React, React-Native, Django, Express, GraphQL, Rest und PostgreSQL.

Responsibilities, while working as Senior Lead Engineer (Consultant) are:Technical Scope: TypeScript, React, ReactNative, redux, redux-saga, Styled-Components, webpack, Gitlab, Jira, ConfluenceI provide exceptional leadership and guidance to cross-functional teams of up to six software and QA engineers within Hamburg’s fastest growing e-commerce fashion unicorn to ensure continuous performance improvement. I manage and administer multiple applications, including React Native Mobile Application and Mobile Progressive Web App, while serving 6M+ customers a month in 14 different countries to improve customer satisfaction and retention rates. Some of the achievements are:✓ Responded to technical questions of 8 Software, QA Engineers, and other Stakeholders to streamline operations. ✓ Decreased critical issues by at least 25% and reduced documentation and communication effort by 50% by delivering process improvements.✓ Minimized complexity of complicated page components by 75% and provide actionable architectural patterns.✓ Optimized performance and stability by leading junior team members, delivering guidance on architecture, as well as on boarding new people. ✓ Ensued data integrity and consistency by swapping data backend within 1.5Month.✓ Administered and maintained 1 to 2 releases per month to meet all KPIs. ✓ Enhanced page load speed by 25% and slashed frontend bundle size -50% by splitting code and removing libraries.

While Working as Lead Application Architect (Consultant, Remote): Technical Scope: Angular, Redux, Django, Django Rest Framework, NodeJS, Celery, PostgreSQL, Redis, Docker, AWS, buildbot, webpack, REST, websocketsI managed and maintained diverse range of operations, including Requirements Engineering, Concept Development, Micro Services Architecture, Database Domain Model, Performance Optimisation, Development/Staging/Production Environments, Monitoring and Surveillance of Application Runtime Metrics. I devised and implemented first cloud based topology optimization platform for automotive and aerospace industry by directing and overseeing a team of up to 4 Software Engineers and QA, while working remotely and onsite.Key achievements, I attained during this role:✓ Managed 400k development budget with focus on cost control and reduction. ✓ Architected web application was part of 72M acquisition. ✓ Confirmed product quality and guaranteed fast continuous delivery by collaborating closely with the CEO.

While Working as Senior Lead Engineer (Consultant): Technical Scope: Django, Django Rest Framework, PostgreSQL, AWS EC2/S3I delivered effective leadership and management of internal development team and external provider for native iOS and Android development to attain organizational objectives. I created and deployed high performance Backend for Native iOS and Android App to ensure seamless technical operations. I administered/monitored requirements engineering, documentation, data modelling, and REST API definition for effective operations. I created budget of 25k to achieve set objectives.Key achievements, I attained during this role:✓ Guaranteed data integrity by steering data aggregation solution to collect device metrics of electric skateboards.✓ Led agile collaboration and development of two internal and four external developers.

While Working as Lead Engineer (Work Contract): Technical Scope: python, python pyramid, python mssql, Microsoft SQL Server, Angular, webpackI delivered owners of supermarkets (EDEKA) with all relevant financial reports in tabular form and interactive configurable graphical dashboards by leveraging platform to facilitate informed decision-making. I directed web based finance reporting and provided secure data exchange platform, while strategically positioned as Product Owner / Solution Architect. I provided main communication channel to safely exchange arbitrary documents between the parties to meet and exceed set goals.Key achievements, I attained during this role:✓ Improved overall processes by overseeing/managing a Team of 2 Internal Developers plus External Design Agency. ✓ Created budget of 60k, while leading collaboration/development of three internal developer plus external agency.