Hello, I am a 7+ experienced full stack developer with focus frontend. My main stack is: Frontend: Vue (Nuxt, Pinia, Vuetify, PrimeVue and more), TailwindCSS, React, Native Javascript Backend: NodeJs, Java Spring Boot Database: MongoDB (NoSQL), PostgreSQL Cloud: AWS (Especially Lambda, Beanstalk, EC2, S3) DevOps: Docker, CI/CD (Gitlab, Github, Bitbucket) Mobile: React Native, Flutter I worked in many start-up companies and build applications from scratch. I have been 3 times a lead-developer and made critical decisions regarding architecture, design, as well as improvements of team processes. My biggest project has been an 4 years project at Heiland GmbH. When I started we were just 2 developers (me and the CTO). I became the lead developer and after 4 Years we had a team of 5 developers. My biggest task was it to migrate the monolith architecture into a microservice architecture using a modern tech stack as Vue, NodeJs and AWS. I created multiple microfrontends with Vue and multiple backend AWS Lambda functions or AWS Beanstalk services. To manage the AWS resources automatically I used AWS CDK and AWS Cloudformation within an CI/CD in Bitbucket. For more information about me please check my CV, my website or send me an email to _Email not available. Sign in: https://www.twine.net/signup_ Best regards, Niklas

Niklas Grieger

Hello, I am a 7+ experienced full stack developer with focus frontend. My main stack is: Frontend: Vue (Nuxt, Pinia, Vuetify, PrimeVue and more), TailwindCSS, React, Native Javascript Backend: NodeJs, Java Spring Boot Database: MongoDB (NoSQL), PostgreSQL Cloud: AWS (Especially Lambda, Beanstalk, EC2, S3) DevOps: Docker, CI/CD (Gitlab, Github, Bitbucket) Mobile: React Native, Flutter I worked in many start-up companies and build applications from scratch. I have been 3 times a lead-developer and made critical decisions regarding architecture, design, as well as improvements of team processes. My biggest project has been an 4 years project at Heiland GmbH. When I started we were just 2 developers (me and the CTO). I became the lead developer and after 4 Years we had a team of 5 developers. My biggest task was it to migrate the monolith architecture into a microservice architecture using a modern tech stack as Vue, NodeJs and AWS. I created multiple microfrontends with Vue and multiple backend AWS Lambda functions or AWS Beanstalk services. To manage the AWS resources automatically I used AWS CDK and AWS Cloudformation within an CI/CD in Bitbucket. For more information about me please check my CV, my website or send me an email to _Email not available. Sign in: https://www.twine.net/signup_ Best regards, Niklas

Available to hire

Hello,

I am a 7+ experienced full stack developer with focus frontend.

My main stack is:
Frontend: Vue (Nuxt, Pinia, Vuetify, PrimeVue and more), TailwindCSS, React, Native Javascript
Backend: NodeJs, Java Spring Boot
Database: MongoDB (NoSQL), PostgreSQL
Cloud: AWS (Especially Lambda, Beanstalk, EC2, S3)
DevOps: Docker, CI/CD (Gitlab, Github, Bitbucket)
Mobile: React Native, Flutter

I worked in many start-up companies and build applications from scratch. I have been 3 times a lead-developer and made critical decisions regarding architecture, design, as well as improvements of team processes.

My biggest project has been an 4 years project at Heiland GmbH. When I started we were just 2 developers (me and the CTO). I became the lead developer and after 4 Years we had a team of 5 developers. My biggest task was it to migrate the monolith architecture into a microservice architecture using a modern tech stack as Vue, NodeJs and AWS. I created multiple microfrontends with Vue and multiple backend AWS Lambda functions or AWS Beanstalk services. To manage the AWS resources automatically I used AWS CDK and AWS Cloudformation within an CI/CD in Bitbucket.

For more information about me please check my CV, my website or send me an email to Email not available. Sign in: https://www.twine.net/signup

Best regards,
Niklas

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Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate

Language

German
Fluent
English
Fluent
Spanish; Castilian
Intermediate

Work Experience

Full Stack Developer at Otto Group Solution Provider (OSP) GmbH
February 1, 2018 - October 31, 2019
- 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.
Senior Full Stack Developer / Lead Developer at Heiland GmbH
July 1, 2020 - April 30, 2024
· 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, and elevating platform stability. · Led migrations and refactoring of legacy code to reduce technical debt and decrease bug incidence.
React Native Developer at Okapi GmbH
May 1, 2024 - April 30, 2024
Developed new features including a Google Maps filter to narrow down outdoor table tennis tables
Senior Vue.js Developer at SmartAgency GmbH
September 1, 2024 - January 30, 2025
· 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.
Senior Full Stack Developer at L1R1 technologies GmbH
February 1, 2025 - April 30, 2025
· Migrated the Billomat API integration to InvoiceNinja API, 33% and boosting system reliability for 1300 users. · EstablishedanESLintconfigurationwithHuskyandlint-staged,resultingina23%decreaseincodereviewissuesandrefined 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.

Education

IT specialist in Application development - Apprenticeship at Professional School ITECH
July 1, 2014 - January 1, 2018
Completed a three-year apprenticeship with a focus on full-stack application development, including front-end and back-end technologies.
Computer Science Technical Assistance at Professional School Farmsen
June 19, 2011 - June 19, 2013
Completed specialized training in computer support and software fundamentals. • Relevant Coursework: Networking Basics, Database Management, Intro to Programming (Java, Python)

Qualifications

Vue.js Senior Developer- Official Certificate
September 19, 2024 - September 19, 2024
Validated expertise in Vue 3’s Composition API, advanced component patterns, Pinia state management, custom plugin development, and performance optimization.
Vue.js Developer
July 19, 2024 - July 19, 2024
Official Vue certification

Industry Experience

Computers & Electronics, Healthcare, Software & Internet, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate