Niklas G.-Senior Full Stack Developer
Check rate
Experience
Senior Full Stack Developer
L1R1 technologies GmbH
- Migrated the Billomat API integration to InvoiceNinja API, boosting system reliability by 33% for 1300 users.
- Established an ESLint configuration with Husky and lint-staged, resulting in a 23% decrease in code review issues and refined code consistency across 5 repositories.
- Improved team processes by refining the Kanban workflow.
- Optimized frontend performance, built a new CI/CD pipeline, and implemented AWS resource monitoring to strengthen deployment reliability and system observability.
Senior Vue.js Developer
SmartAgency GmbH
- Developed new Vue.js components and resolved bugs in existing implementations.
- Translated complex Figma designs into responsive, production-ready web pages.
- Optimized frontend performance, decreasing page load times by 26% and enhancing user experience for 1600 monthly visitors.
React Native Developer
Okapi GmbH
- Developed new features including a Google Maps filter to narrow down outdoor table tennis tables.
Senior Full Stack Developer / Lead Developer
Heiland GmbH
- Led key decisions and implementations in cloud infrastructure design.
- Mentored 2 team members, accelerating onboarding and advancing code quality across the development team.
- Maintained and enhanced the B2B e-commerce shop, elevating platform stability.
- Led migrations and refactoring of legacy code to reduce technical debt and decrease bug incidence.
Full Stack Web Developer / Lead Developer
upljft GmbH
- Engineered a REST API in Laravel to generate Yogagraphy images, serving 1200 users and automating image generation workflows.
- Automated image generation from custom strings and sent personalized Christmas emails to customers via Mailchimp.
- Implemented a new CI/CD pipeline with Docker in GitLab, reducing deployment times and improving release reliability.
- Delivered end-to-end web solutions for clients, ranging from small business sites to large-scale enterprise applications, resulting in 3 successful project launches.
- Served as primary technical contact for customer projects, ensuring timely delivery and maintaining client satisfaction.
Full Stack Developer
Otto Group Solution Provider (OSP) GmbH
- Enhanced Android (Java) and iOS (Swift) apps, adding new features and improving app stability for 2000 users.
- Developed a REST API for dynamic template generation and mass dispatch of SMS and emails for a parcel service, processing 300,000 messages per month.
- Developed an online training course administration platform, enabling users to access and manage training content efficiently.
- Acted as technical point of contact, facilitating cross-team collaboration and ensuring project milestones were met on schedule.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Retail, Information Technology, Professional Services, and Sport.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology and Product Development.
Summary
Full-stack developer with over 6 years of experience architecting scalable web applications using Vue.js/Nuxt (v2 & v3), Node.js and Java Spring Boot. Led end-to-end migrations from monolithic to microservices architectures in AWS and implemented CI/CD pipelines across GitHub, Bitbucket and GitLab. Authored 5 open-source Vue/Nuxt libraries with up to 9100 Monthly downloads.
Skills
Frontend
- Javascript
- Typescript
- Vue.Js (2 & 3)
- Vue Router
- Vuex
- Pinia
- Vuetify
- Nuxt.Js (2 & 3)
- React
- Sass/Scss
- Tailwind Css
- Vitest
- Playwright
Backend
- Node.Js
- Java (Spring Boot)
- Restful Api Design
Database
- Postgresql
- Nosql (Mongodb)
Devops
- Aws (Lambda, Api Gateway, Beanstalk, Cloudformation, Ec2)
- Ci/Cd Pipelines (Gitlab, Github, Bitbucket)
- Docker
Mobile Development
- React Native
- Flutter (Dart)
Languages
Education
Professional School ITECH
Vocational Diploma in Application Development · IT specialist in Application development · Hamburg, Germany
Professional School Farmsen
Technical Assistant Diploma · Computer Science Technical Assistance · Hamburg, Germany
Certifications & licenses
Vue.js Senior Developer
Vue School
Vue.js Developer
Vue School
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Niklas is based in Norderstedt, Germany.
Niklas speaks the following languages: German (Native), English (Advanced).
Niklas has at least 7 years of experience. During this time, Niklas has worked in at least 6 different roles and for 6 different companies. The average length of individual experience is 1 year and 2 months. Note that Niklas may not have shared all experience and actually has more experience.
Based on recent experience, Niklas would be well-suited for roles such as: Senior Full Stack Developer, Senior Vue.js Developer, React Native Developer.
Niklas's most recent position is Senior Full Stack Developer at L1R1 technologies GmbH.
In recent years, Niklas has worked for L1R1 technologies GmbH, SmartAgency GmbH, Okapi GmbH, and Heiland GmbH.
Niklas is most experienced in industries like Retail, Information Technology, and Professional Services. Niklas also has some experience in Sport.
Niklas is most experienced in business areas like Information Technology, Product Development, and Quality Assurance.
Niklas has recently worked in industries like Retail, Information Technology, and Professional Services.
Niklas has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Niklas holds a Bachelor in IT specialist in Application development from Professional School ITECH and a Bachelor in Computer Science Technical Assistance from Professional School Farmsen.
Niklas has 2 certificates. These include: Vue.js Senior Developer and Vue.js Developer.
The availability of Niklas needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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