Stefan Hoffmann

Stefan Hoffmann Wolfsburg, Germany •-• +49 - github.com/boykalanders Experienced Full Stack Developer with a strong background and a rich experience in frontend and backend. Proficient in React and Vue for frontend, in Nest.js and Django for backend, in PostgreSQL and MongoDB for DB. WORK EXPERIENCE Lead Developer habitat UK Oct 2022 - Feb 2024 London, United Kingdom Developed comprehensive front-end and back-end solutions using JavaScript, React.js, Next.js, NodeJS and AWS S3. Contributed to the adoption of modern development tools, reducing the time required for new feature implementation by 20% in sales and payment pages. Collaborated with product managers and designers to translate requirements into technical specifications, ensuring timely and successful project deliveries. Presented good time management skill and completed the project before tight deadine by eliminating meetings and shifting low-priority tasks to the end of the development. Senior Frontend Developer Mar 2021 - Aug 2022 Novartis Pharma Nuremburg, Germany Participated in code reviews, provided valuable feedback, and contributed to a 30% reduction in bugs while enhancing code quality and user-friendly UI. Refactored legacy code, resulting in a 30% reduction in code complexity and increased feature delivery speed by 25%. Improved SEO performance using SEO tools, resulting in a 10% increase in search engine rankings. Senior Frontend Developer Oct 2018 - Nov 2020 Thrive Market Remote Mentored junior team members, resulting in a 50% decrease in onboarding time and enhanced overall team skills. Implemented Agile methodologies, resulting in a 30% reduction in development time and a 15% increase in team productivity. Improved team collaboration and knowledge sharing by introducing collaborative tools and conducting regular knowledge-sharing sessions, resulting in a 30% decrease in siloed work. Frontend Developer Aug 2017 - May 2018 Colonnade Insurance SA Gasperich, Luxembourg Implemented a modular and scalable CSS architecture using BEM (Block Element Modifier) methodology, reducing CSS file size by 40% and making maintenance easier for future developers. Designed and developed a reusable Vue component library, adapted Material UI, and reduced development time for projects by an average of 30%. EDUCATION Bachelor of Computer Science University of Manchester Studied Program Engineering, Algorithm and Database Management Mar 2014 - Jun 2017 GPA: 3.5 of 4.0 PROJECTS habitat UK Nov 2022 - Mar 2023 habitat UK is a E-Commerce, located in London, UK. I, as a frontend developer, got the requirements in detail in everyday standup meetings, discussed with frontend designers about user-friendly web design and developed with React.js to leverage its declarative style and facilitate the modular. As a result, I reduced development time by 30% and got the bonus from project manager and promoted to a lead frontend developer due to well-functioned structure and development time. Thrive Market Oct 2018 - Jan 2019 Thrive Market is a kind of E-Commerce. I was a lead frontend developer with 8 senior developers and beginners so I discussed the requirements with clients in detail. I divided the tasks to our team members according to their skill sets and I also made them share their knowledge and experience to enhance overall skills. However, when a month was left, the client asked us to finish the project two weeks earlier. I have a good time-management skill so I eliminated meetings and gave developers right directions and necessary books and documents to decrease development time. I also promised two-day PTO after the success of the project. As a result, we accelarated development speed, leading to a 10% decrease in left time and achieved our goal. SKILLS Frontend: Reactjs, Vuejs Backend: NestJS, Django Database: PostgreSQL, MongoDB Cloud Service: AWS(EC2, S3), Google Cloud(Storage, SQL) Language: Javascript, Python LANGUAGES German (Native proficiency) • English (Professional working proficiency) • Chinese (Limited working proficiency)