Anselm H.-Freelance Frontend Lead Engineer & Architecture Consultant
Check rate
Experience
Freelance Fullstack Principal Developer
Fiberbase GmbH
Working as a full-stack (next.js, Postgres) engineer and consultant to build the core platform with underlying services for location-based comparisons and requests. I’m working on performance optimization across the stack (especially Postgres queries) and writing product specifications and the platform architecture with another colleague.
Freelance Accessibility Lead & Frontend Engineer
Jedox
- Helped teams with their frontend libraries and unified component library
- Transitioned old external solutions into modern internal projects
- Kicked off the accessibility compliance project for the first product
- Coached developers and QA on accessibility, boosting performance, stability and team morale
Freelance Scrum Master / Effectiveness Coach
Testo
Helped the Data Engineering team work more effectively, building AI and various real-time API products on time while keeping the team motivated despite everything going on in the background.
Freelance Frontend Architecture and Frontend Engineer
Testo
- Organized and built the architecture, technology and workflow foundation for a new web application serving a global customer portal
- Connected various products and APIs
- Technologies: React, TypeScript, Docker, Kubernetes
- Automation: Continuous integration with GitHub Actions, CircleCI, TravisCI, GitLab CI, Jenkins 2
Satellite Transformation Project Engineer
Siedle
- Refactored an existing codebase into a modern, reliable and high-performance codebase
- Solved ongoing performance problems with a web application used in the field by thousands of customers
- Achieved a lean and robust solution that works seamlessly with no performance issues
- Architecture: microservices, microfrontend
- API design: REST, GraphQL
- Coding conventions and guidelines: HTML, CSS (BEM, ITCSS), JavaScript
- Performance-budget driven development
Engineering & Delivery Manager
LaterPay
- Helped two teams build valuable features prioritized for customer value
- Coached team members in agile and technical skills
- Ensured a safe work environment while enabling career growth and learning
- Involved in hiring and HR department decisions
- Tools and methodologies: remote working, Kanban, Lean, Scrum
Frontend Architect & Developer
Adverma
- Built two high-traffic websites serving millions of customers and data with a lean tech stack
- Produced hand-crafted code and made smart decisions to solve complex problems
- Responsible for the frontend part and the overall technical customer experience
Co-founder and Developer
Colloq
- Co-founded and created a social event management and knowledge discovery platform from scratch as a team of three
- Built platform features and user interfaces
- Managed agile driven development processes
- Technologies: HTML, CSS, Sass, PostCSS, CSS-in-JS libraries, JavaScript, TypeScript
- Shut down the project after four years due to lack of market relevance
Front-End Developer
Greenpeace International
- Architected the international set of websites for the organisation with a styleguide and custom tech framework on a WordPress Multi-Site basis
- Used Scrum as work methodology
- Responsible for frontend guidelines and codebase
Front-End Consultant
LaterPay
- Refactored legacy code and built new fast and scalable codebases with modern toolchains across three teams
- Coached junior developers and audited other codebases for performance, scalability and accessibility issues
Wireframe & Front-End Prototype Developer
Sahana Disaster Management Foundation
Developed wireframes and front-end prototypes for disaster management applications and brought a teaser homepage online.
Front-End Developer
Vaillant Group
- Built a global website system that scales and endures within a small team
- Coordinated projects and supervised two of four Scrum teams
- Developed frontend components, test frameworks and infrastructure
Front-End Developer
Hubert Burda Media / FOCUS Magazin Verlag
- Developed front-end and tablet applications using HTML5 and CSS3
- Acted as an Adobe ambassador and expert on web standards
- Was one of the first to implement responsive images and modern web features in production
Front-End Architect
SAP Datacenter
- Designed the front-end architecture and development for the SAP Datacenter website in partnership with Hans-Christian Reinl and grasundsterne agency
Freelance frontend developer & agile coach
Self-employed
- Developed small to large-scale websites and web applications based on web standards like HTML, CSS, JavaScript, PHP, Node.js
- Preferred vanilla web technologies and modern toolchains like React, Next.js, Vue, TypeScript
- Advised customers on frontend engineering and agile workflow optimization
- Worked on various small website projects
Freelance Advisor and Director for Web Technologies
2issue digital publishing GmbH
- Helped developers start projects quickly by architecting and building digital magazines, apps and web experiences for clients like FOCUS Magazin and Adobe
Founder
Self-employed
- Founded a two-person design agency delivering corporate designs, websites and consultancy work for various clients
- Transitioned business into sole freelance operation in 2011
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Banking and Finance, Advertising, Manufacturing, Media and Entertainment, and Government and Administration.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Project Management, Product Development, Marketing, and Quality Assurance.
Summary
I have been developing websites and web applications since 2007 using standards-based technologies like HTML, CSS, JavaScript, PHP, and Node.js. I love working with Vanilla Web technologies but am absolutely experienced in applying modern toolchains such as React, Next.js, and TypeScript on a daily basis. My journey includes leading teams, optimizing agile workflows, and ensuring projects are scalable, accessible, and efficient.
I bring a deep understanding of both small-scale and global projects, emphasizing clear code, smart architectural decisions, and team coaching. With a long-term passion for frontend engineering, I focus on delivering reliable user experiences that meet real-world business needs.
Skills
Tooling / Workflow:
- Git
- Npm / Pnpm / Vite / Webpack / Composer / Esbuild / Swc
- Docker, Kubernetes
- Unit, Integration, And End-To-End Testing
- Automation: Continuous Integration With Github Actions, Circleci, Travisci, Gitlab Ci, Jenkins 2
Architecture:
- Microservice Structure
- Api Design (Rest, Graphql)
- Microfrontend Organization
- Coding Conventions And Guidelines: Html, Css (Bem, Itcss), Javascript
- Performance-Budget Driven Development
- Agile Driven Development
Development:
- Html
- Css, Sass, Postcss, Various Css-In-Js Libraries
- Javascript / Ecmascript / Typescript
- Responsive Development (Includes On Device Remote Debugging And Testing)
- Accessibility
- Performance Optimization And Debugging
Project Management:
- Remote Working (Also In Large Teams)
- Kanban, Lean, Scrum (Prev. Certified Scrum Master)
- Team Building
Languages
Education
Jakob-Brucker Gymnasium Kaufbeuren
Abitur certificate (equals: high school diploma) · Humanities · Kaufbeuren, Germany
Certifications & licenses
Scrum.org
Adobe Community Expert
Adobe Inc.
Statistics
Experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Anselm is based in Iffeldorf, Germany and can operate in on-site, hybrid, and remote work models.
Anselm speaks the following languages: German (Native), English (Advanced), French (Elementary).
Anselm has at least 19 years of experience. During this time, Anselm has worked in at least 15 different roles and for 14 different companies. The average length of individual experience is 1 year and 1 month. Note that Anselm may not have shared all experience and actually has more experience.
Based on recent experience, Anselm would be well-suited for roles such as: Freelance Fullstack Principal Developer, Freelance Accessibility Lead & Frontend Engineer, Freelance Scrum Master / Effectiveness Coach.
Anselm's most recent position is Freelance Fullstack Principal Developer at Fiberbase GmbH.
In recent years, Anselm has worked for Fiberbase GmbH, Jedox, Testo, Siedle, and Colloq.
Anselm is most experienced in industries like Information Technology, Banking and Finance, and Advertising. Anselm also has some experience in Media and Entertainment, Manufacturing, and Government and Administration.
Anselm is most experienced in business areas like Information Technology, Project Management, and Product Development. Anselm also has some experience in Marketing and Quality Assurance.
Anselm has recently worked in industries like Information Technology and Manufacturing.
Anselm has recently worked in business areas like Information Technology, Project Management, and Product Development.
Anselm attended Jakob-Brucker Gymnasium Kaufbeuren for Humanities.
Anselm has 2 certificates. These include: Certified Scrum Master and Adobe Community Expert.
Anselm is immediately available part-time for suitable projects.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 11 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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