11/27/2024 updated

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Senior Frontend Developer

Valencia, Spain
Germany
Bachelor of Science
Valencia, Spain
Germany
Bachelor of Science

Profile attachments

MarcelKalveramResume.pdf

Clean Code PrinciplesJavaScriptAgile MethodologyUnit TestingGitHubMySQLNode.jsNoSQLScrum MethodologyE2e TestingNext.jsSoftware DesignEslintRxJSTest-Driven Development (TDD)TailwindReact.jsObject-Oriented Programming (OOP)Google FirebaseFront End Software Development
I am an engineer with 15+ years of experience, always putting the user at the centre of my work. I have built and coached small engineering teams in various technical leadership roles, from early-stage startups to pre-IPO businesses. I work remotely from Valencia, Spain.

My core areas of expertise as an engineer are JavaScript, React, node.js and front-end technologies in general.

As a Product Owner I have gained deep experience in agile software development, product strategy and lean startup methodology.

Experience

Professional experience10+ years
Freelancer since2008

Languages

GermanNative speakerEnglishFluentSpanishFluent

Project history

Lead Entwickler und Product Owner

MVPR

Marketing, PR and design

< 10 team member

  • Developed the first version of the MVPR web app and its core features, using Firebase and Tailwind UI to create a functional prototype
  • Hired and managed a team of three developers and defined product and engineering processes
  • Helped the company find problem/solution fit and raise a 0.5M seed round after a year

Lead-Entwickler

Hanno

Pharmaceuticals & Medical Technology

< 10 team member

  • Built and shipped two mobile apps (a cancer diary and a wound care guide) in React Native
  • Implemented extensive unit and e2e testing to comply with strict regulations and quality standards

React Native Freelancer

Internet & IT

< 10 team member

  • Helped companies build native iOS/Android apps in React Native, integrating reliable CI/CD pipelines and establishing unit and e2e testing best practices
  • Shipped three React Native apps to the iOS/Android app stores

Lead Developer

Hanno

Internet & IT

< 10 team member

  • Worked as part of a remote team of designers, developers and strategists for a wide range of startup clients across Europe and the US
  • Helped teams ideate on and validate product ideas using the Lean Approach and Rapid Prototyping
  • Built around 20֡ web and mobile apps using AngularJS, React and React Native on the front end, using light server-less solutions like DatoCMS and Contentful on the back end

Chief Technology Officer

JUNGMUT GmbH & Co. KG

Marketing, PR and design

< 10 team member

  • Planned, implemented and shipped 30֡ marketing sites, web apps and Facebook campaigns
  • Hired and managed external freelancers, taking responsibility for the quality of their work
  • Established and matured the company's engineering processes

Lead Web Developer

Delusha

Goods & Retail

< 10 team member

  • Designed, developed, and shipped an eCommerce shop from scratch using CakePHP
  • Set up the back-office and user management interface, leveraging Cake's scaffolding capabilities

Web Developer

Various

Internet & IT

< 10 team member

  • Implemented around 15֡ websites and web apps in HTML, CSS and JavaScript
  • Integrated Content Management Systems like WordPress, Joomla and Typo3

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