Kevin Plenter DE
Full-Stack Developer

Kevin Plenter

I build reliable, well-considered digital products — from the first sketch to production deployment.

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About

Who I am & how I work

I'm Kevin — a full-stack developer who aims to build technically clean software that actually holds up in production. I care about features, but I care more about architectures that grow with the product.

Whether it's a freelance engagement, a full-time role, or an existing team looking for focused reinforcement: I adapt and deliver — pragmatic, documented, maintainable.

If you're looking for someone who takes ownership and thinks along instead of just executing tickets, let's talk — as a partner for a specific project or as a team member for the long run.

Career

Stations

  1. Jun 2023 – today

    Team Lead Frontend

    journaway GmbH · Germany

    Led and scaled a 5-person frontend team while owning system architecture, technical roadmap, and project delivery – driving the development of the journaway website (Next.js/Contentful), a high-performance search engine (Express.js/Elasticsearch), and internal automation tools, alongside establishing AI-first practices and managing third-party software integrations.

    • TypeScript
    • Next.js
    • React
    • Tailwind
    • CSS
    • Node.js
    • Express.js
    • Nest.js
    • Contentful
    • PostgreSQL
    • Redis
    • MongoDB
    • Docker
    • GitHub Actions

  2. Jan 2022 – today

    Full-Stack Developer

    Plenter Software (Self-Employment) · Germany

    Designing and building digital products for clients across industries — from first sketch to production release.

    • TypeScript
    • JavaScript
    • React
    • CSS
    • SASS
    • Node.js
    • Symfony
    • Twig
    • MariaDB

  3. Oct 2021 – May 2023

    Web Developer

    eQ-3 Entwicklung GmbH · Germany

    Development and maintenance of the HR software Timemaster with a focus on scalability and code quality – responsible for frontend architecture, state management, and performance, as well as a full codebase migration from AngularJS to Angular including TypeScript and a modern build pipeline. Additionally designed and developed API endpoints for system integration and co-owned the cross-platform mobile app.

    • TypeScript
    • Angular
    • Flutter
    • CSS
    • C#
    • .NET Core
    • PostgreSQL
    • MS SQL Server
    • Azure DevOps

  4. Jan 2020 – Sep 2021

    IT-Consultant , Fullstack Developer

    Lufthansa Industry Solutions TS GmbH · Germany

    Worked as an IT consultant and fullstack developer across various client projects – including the development of a WLTP calculation platform for a major German automotive manufacturer, owning frontend architecture decisions within the team and delivering fullstack solutions with React and Java Spring, complemented by technical consulting and scoping of new web and mobile projects.

    • TypeScript
    • React
    • CSS
    • SASS
    • Java
    • JUnit
    • Spring
    • MariaDB
    • Oracle
    • Docker
    • GitLab CI

  5. Nov 2016 – Dec 2019

    Fullstack Developer

    Johannesburg GmbH · Germany

    As the sole developer, independently responsible for building and operating the entire software landscape of a non-profit organization in the youth welfare sector – from strategic conception and architecture to development and production operations of several business-critical web applications. Self-conceived and implemented solutions include fleet management, energy cost tracking, real estate and HR billing, IT inventory management, and a comprehensive school administration system. Additionally responsible for hosting, vendor management, and technical consulting for the quality management department on GDPR-compliant implementation within the sensitive context of youth welfare services.

    • Symfony
    • PHP
    • Vue
    • CSS
    • SASS
    • Express.js
    • Java
    • MS SQL Server
    • MariaDB
    • OpenSUSE
    • VMware vSphere

  6. Jul 2016 – Oct 2016

    Software Developer

    S&F Datentechnik GmbH · Germany

    Development and maintenance of KOMVOR, an established software solution for municipal process management in environmental agencies – responsible for the full software lifecycle including feature development, bug fixing, automated database migrations (e.g. Oracle → MS SQL Server), and the conception of new solutions for public administration.

    • PowerScript
    • Appeon Web
    • C#
    • MS SQL Server
    • Oracle
    • MS Team Foundation Server
Projects

Selected client work

Client names are anonymised for confidentiality reasons. Happy to share more in a personal conversation.

  • Industry · Occupational Safety 2021 - 2023

    E-Learning Platform

    Conception, development and maintenance of a multi-tenant e-learning platform for legally compliant occupational safety training – featuring fully automated course delivery including exam logic and certificate issuance, modular course generation, a hybrid frontend architecture (Twig/React), and multilingual support via DeepL and Google Translate integration.

    • Symfony
    • PHP
    • React
    • CSS
    • Bootstrap
    • MariaDB
    • DeepL API
    • Google Translate
  • Industry · Wholesale 2020

    Equipment Purchasing Website

    Development and maintenance of a multilingual corporate website for the purchasing of work equipment – with pixel-perfect design implementation in close collaboration with the client's design team and full internationalization including multilingual content management.

    • Wordpress
    • JavaScript
    • CSS
    • PHP
  • Industry · Occupational Safety 2018 - 2020

    Automated Risk Assessment Platform

    Conception, development and maintenance of a platform for legally compliant creation of risk assessments in accordance with the German Occupational Health and Safety Act (ArbSchG) – featuring modular content management, automated generation of complete assessments, automatic report delivery, and compliance automation for recurring inspection deadlines.

    • Symfony
    • PHP
    • JavaScript
    • CSS
    • Bootstrap
    • Twig
    • MariaDB
Skills

Tools I work with

A selection of the technologies I use in production projects.

Languages

  • TypeScript
  • JavaScript
  • Java
  • C#
  • PHP
  • SQL
  • HTML
  • CSS

Frontend

  • Next.js
  • React
  • Angular
  • Vue
  • Astro
  • Tailwind CSS
  • Vite

Backend

  • Node.js
  • Express.js
  • Nest.js
  • Symfony
  • Spring Boot
  • .NET Core
  • REST
  • GraphQL

Databases

  • PostgreSQL
  • MS SQL Server
  • Oracle
  • MariaDB
  • Elasticsearch
  • Entity Framework
  • Hibernate
  • Prisma
  • Drizzle

Infrastructure & Tooling

  • Docker
  • Linux
  • GitHub Actions
  • GitLab CI
  • nginx
  • WebStorm
  • Jira
  • Confluence
  • Claude
  • Chat GPT

Practices

  • Clean Code
  • Clean Architecture
  • Testing
  • CI/CD
  • Code-Review
  • Mentoring
  • Scrum
  • Kanban
Contact

Let's talk

Drop me a short note about what you have in mind — I usually respond within one business day.

Send an email → info@k-plenter.de