Kim Kern

Lead Fullstack Node/React Developer

Avatar placeholder
Berlin, Germany

Experience

Nov 2023 - Jan 2024
3 months

Lead Fullstack Node/React Developer

Rytle

  • Development of React.js / Next.js web application, displaying live sensor data and optimized routes on interactive maps.
  • Architected and managed Node.js backend services in Docker containers integrated with Kafka, responsible for order management and routing.
  • Guided and supported junior developers in their professional growth as team lead developer.
  • Technologies: node.js, React, TypeScript, Postgres, Docker, Kafka, Github CI, ArgoCD
Nov 2021 - Apr 2023
1 year 6 months

Developer for microservice logistics platform

Leogistics

  • Integrated real-time sensor data (AWS SNS/SQS) and created a scalable rule-based alerting system using Dapr.
  • Established a lerna monorepo for internal npm packages with an automated Gitlab CI pipeline for semantic releases.
  • Conducted performance analysis (node clinic) and refactoring/splitting of existing microservices.
  • Technologies: nestjs, node.js, TypeScript, mongoDB, AWS, NATS, GitlabCI, Kubernetes, Dapr
Mar 2021 - Sep 2021
7 months

Engineering Manager for React-Native App Features

Klarna

  • Led the Form Filling team as the Competence Lead, responsible for technical design decisions, team meetings, and personal development of team members.
  • Enhanced analytics/monitoring and defined KPIs across teams, leveraging domain knowledge.
  • Defined domain standard for SLOs as member of the Operational Excellence Group.
  • Technologies: React Native, node.js, TypeScript, Amplitude, Redux, Splunk, Datadog
Mar 2020 - Mar 2021
1 year 1 month

Full Stack Lead Developer for Web Automation APIs

Klarna

  • Developed multiple backend services using Node.js, enabling advanced web automation capabilities for internal stakeholder teams.
  • Built CLI tools and browser add-ons for data collection and generation, automated through a Jenkins pipeline.
  • Integrated APIs into Klarna's React Native app and implemented metrics in Amplitude for monitoring successful go-live and ongoing operations.
  • Technologies: node.js, TypeScript, Express, PostgreSQL, Puppeteer, Jest, Jenkins, AWS, Splunk
Feb 2020 - Mar 2020
2 months

Social Network Platform with Real-time Data

Linkbase

  • Developed a progressive web app prototype, focusing on social networking with real-time data integration from a Firebase database.
  • Collaborated closely with the product owner/designer, maintaining an agile development approach and incorporating direct feedback.
  • Technologies: Angular, TypeScript, Angular Material, Firebase, Service Worker
Jan 2018 - Present
8 years 1 month

Freelance Developer

  • See list of recent projects below
  • Main focus: node.js, React.js, TypeScript
Jan 2014 - Dec 2020
7 years

Software Developer (part time)

Projektron GmbH

  • Project management software
  • Java
  • JS/TS
  • SQL
  • Postgres
  • Jenkins
  • Scrum

Languages

German
Native
English
Advanced

Education

Reuchlin Gymnasium Pforzheim

Abitur (A level) · Pforzheim, Germany · 1.1 (A+)

Freie Universität Berlin

Bachelor of Science, Computer Science · Computer Science · Berlin, Germany · 1.3 (A)

Freie Universität Berlin

Master of Science, Computer Science · Computer Science · Berlin, Germany · 1.2 (A)

Need a freelancer? Find your match in seconds.
Try FRATCH GPT
More actions

Similar Freelancers

Discover other experts with similar qualifications and experience

Lucas Jahn
Lucas Jahn

Full-Stack Developer (WordPress, React.js)

View Profile
Christopher Mäuer
Christopher Mäuer

Mobile & Full-Stack Engineer

View Profile
Matti Lange
Matti Lange

FullStack Developer

View Profile
Julian Haluska
Julian Haluska

Working / Master's Thesis Student in Software Development

View Profile
Oleg Abrazhaev
Oleg Abrazhaev

Lead Full Stack Software Engineer

View Profile
Mark Mulder
Mark Mulder

CTO / Co-Founder

View Profile
Norbert Stein
Norbert Stein

Technical training & open-source work

View Profile
Timur Yalcin
Timur Yalcin

Lead Frontend Developer | Fullstack Developer

View Profile
Jan Lüders
Jan Lüders

Senior Developer

View Profile
Peter Teich
Peter Teich

Freelance Go-Developer/DevOps-Engineer

View Profile
Rodrigue Kelen-yo
Rodrigue Kelen-yo

Fullstack Development

View Profile
Andreas Schmückert
Andreas Schmückert

Solution Architect, Business Analyst, Consultant, Full-Stack Lead-Developer

View Profile
Alexander Kapincev
Alexander Kapincev

Senior Fullstack Developer

View Profile
Lars Pietrowski
Lars Pietrowski

Web and Software Developer (Fullstack) / EDI Interface Developer

View Profile
Christopher Nonne
Christopher Nonne

Freelance

View Profile
Patrick Meppe
Patrick Meppe

IT Consultant

View Profile
Sebastian Wetzel
Sebastian Wetzel

Software Engineer & Consultant

View Profile
Achille Chimi
Achille Chimi

Backend/Frontend Developer

View Profile
Nico Meyer
Nico Meyer

Freelance Fullstack Developer

View Profile
Max Degterev
Max Degterev

Tech Lead, Interim CTO/CPO

View Profile
Christian Worsch
Christian Worsch

Senior Full-Stack Developer

View Profile
Max Dietrich
Max Dietrich

Senior Fullstack Engineer

View Profile
Yannis Vogel
Yannis Vogel

Tutor

View Profile
Igor Frühauf
Igor Frühauf

Lead Frontend Developer

View Profile
Andreas Kraus
Andreas Kraus

Senior Developer

View Profile
Robin Sadlo
Robin Sadlo

Senior Cloud & Backend Engineer

View Profile
Konrad Abe
Konrad Abe

Senior Software Developer

View Profile
Hans-christian Pahlig
Hans-christian Pahlig

Senior Full Stack and AI Engineer

View Profile
Marian Gaebler
Marian Gaebler

Senior Software Engineer

View Profile
Hicham Mokhtari
Hicham Mokhtari

Freelance Software Developer

View Profile