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Lars TesmerLT

Lars Tesmer

Senior Fullstack Developer | Vue.js · React · PHP

€640/day
Hamburg, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Lars

I have been developing digital products for over 15 years as a developer, architect, and consultant. My focus is on modern frontends with TypeScript, Vue.js/Nuxt, and React/Next.js, complemented by solid fullstack experience with Rails and Node.js.
What distinguishes me from pure developers: I think in products, not in tickets. I bring architectural decisions that will still be viable in two years and quickly get up to speed with existing codebases. In larger teams, I can take a leading role if desired: onboarding new developers, code reviews, technical roadmaps.

I have worked for New Work SE (Xing), sum.cumo, Jimdo, and InnoGames, among others, in teams ranging from 2 to 28 people, in startups as well as established scale-ups. Remote from Hamburg, flexible for EU projects.
  • German

    Native or bilingual

  • English

    Fluent

  • Spanish

    Basic

  • French

    Basic

Can work on-site
Hamburg (up to 50km)

Experience

  • vonfoorn GmbH
    Senior Software Developer
    DIGITAL AND IT
    October 2017 - Today (8 years and 10 months)
    Weserstieg 23, Hamburg, Germany
    Senior consultant and fullstack developer with a focus on frontend (TypeScript, React, Vue.js) and over 15 years of experience in digital projects.
    Typescript React.js Vue.js Ruby on Rails JavaScript
  • vonfoorn GmbH - Whitelabel Einzelhandelsplattform
    Senior Consultant and Frontend Engineer
    RETAIL (SMALL BUSINESS)
    January 2025 - Today (1 year and 7 months)
    Hamburg, Germany
    New development of a configuration and sales platform for bicycle dealers as a fullstack developer in a 2-person team. Collaborative architecture planning, implementation of Vue.js components, as well as extension and adaptation of the Rails-based backend API. Technical: Vue.js, TypeScript, Rails, Jest, REST, GitHub, Continuous Deployment.
    Typescript IT Architecture Vue.js REST Ruby on Rails
  • sum.cumo Sapiens GmbH
    Senior Consultant and Frontend Engineer
    BANKING AND INSURANCE
    February 2022 - December 2024 (2 years and 10 months)
    Hamburg, Germany
    Senior Frontend Engineer and consultant at a digital insurer (Nexible) in three markets (DE, AT, ES).
    Scaling the frontend architecture of an online insurance application, planning and implementing the migration of an information website to a headless CMS, and leading the migration from Vue 2/Nuxt 2 to Vue 3/Nuxt 3.
    Onboarding and training of the insurer's in-house developers, optimization of the GitLab CI/CD pipeline.
    Technical: Vue.js/Nuxt, TypeScript, GraphQL/Apollo, Jest, Cypress, Storybook, Kubernetes, Mono-Repo.
    Vue.js CMS Customization Typescript Nuxt.js GraphQL

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Education

  • Conflict-free Communication
    2014
    Konfliktfreie Kommunikation
  • Training Agile Retrospective Moderation
    2013
    Schulung Agile Retrospektive Moderation

Skill set

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