ClientShopware development
Active Hunting
Online store for hunting equipment with thermal and night vision, optics, firearms and clothing. Including an “advantage world” with special prices for customer accounts.
Shopware 6E-CommerceVite
/Shopware 6
Full-Stack Developer & Founder of Wolfscastle
Wolfsburg, Germany
Available for selected projects
Hello there — I'm
JoshuaGerke — Full-stack developer from Wolfsburg, Germany
I build software that saves time: websites, stores, platforms and games. With Wolfscastle I run my own products like RespawnHost and Sendwolf.
Joshua Gerke
Founder · Wolfscastle
Who I am
I'm a full-stack developer from Wolfsburg, Germany, and taught myself to code as a kid. Today I build stores, platforms and my own products with Wolfscastle: fast, clean and without detours.
At 14 my first websites for gaming clans, at 17 self-employed, at 19 the step from frontend to full-stack. As a passionate gamer I founded RespawnHost, build my own games and show my projects on YouTube. I use modern AI as a tool, not a replacement: for clean results backed by real expertise, in record time.
„You never have enough time. That's why it matters to remove whatever eats it up as fast as possible.“
Years of development experience
10+
Projects delivered with Wolfscastle
80+
Game servers provisioned via RespawnHost
2,500+
Customers at MC-HOST24, where I led development
300k+
- ACTIVE HUNTING
- HEDLUND
- KACHOURI
- ROOF-DESIGNER
- MC-HOST24
- STRICTLY LIMITED GAMES
- ANNITHEDUCK
- GTHANG.GG
- ACTIVE HUNTING
- HEDLUND
- KACHOURI
- ROOF-DESIGNER
- MC-HOST24
- STRICTLY LIMITED GAMES
- ANNITHEDUCK
- GTHANG.GG
What I do
Services
(01—06)
Custom websites and web apps: fast, maintainable and cleanly built. From the first prototype to systems thousands of people use every day.
• Tools & stack
- Laravel
- Vue.js
- Astro
- TypeScript
Store setup, custom themes and plugins, integrations and ongoing support. For stores that sell and stay stable under load.
• Tools & stack
- Shopware 6
- Shopify
- Vite
- PHP
Backends, REST APIs and complete platforms with customer panels, billing and integrations, the way I build them for RespawnHost, Sendwolf and Chatwolf.
• Tools & stack
- REST APIs
- Node.js
- Go
- WebSockets
Browser games, games of my own and 3D configurators that make complex products tangible. Built with real enthusiasm, because gaming is my passion.
• Tools & stack
- Three.js
- WebGL
- Game Design
- GSAP
Servers, deployments and monitoring that grow with you. Experience from running thousands of game servers and hosting platforms myself.
• Tools & stack
- Linux
- Managed Server
- CI/CD
- Cloudflare
From first sketch to clickable prototype: interfaces that work logically and look premium, designed by someone who builds them afterwards.
• Tools & stack
- Figma
- Prototyping
- Design Systems
- Tailwind CSS
- Laravel
- Vue.js
- TypeScript
- Node.js
- PHP
- Astro
- Shopware 6
- Shopify
- Three.js
- Tailwind CSS
- Python
- Go
- REST APIs
- Linux
- Laravel
- Vue.js
- TypeScript
- Node.js
- PHP
- Astro
- Shopware 6
- Shopify
- Three.js
- Tailwind CSS
- Python
- Go
- REST APIs
- Linux
Selected work
Work
(13)
Own projectIdea, design & developmentCodeguess
“The agent game show”: Team Red vs Team Teal in the browser. Spymasters give clues to 25 secret files, with voice chat, gadgets and Twitch chat controls for streams.
MultiplayerWebRTC voice chatTwitch integration/Browser game
ClientCreator projectAnniTheDuck
Working with AnniTheDuck, a verified Twitch partner with over 800,000 followers, on her channel and community.
TwitchStreamingCreator/Twitch
Own projectGame developmentHearthsail
A cozy sailing game: relight the beacon of Hearth Harbor, fish, farm, cook and explore an ocean without an edge. Wishlist it on Steam.
Indie-GameEigene EngineSteam/In development
More projects
- Hedlund ClothingShopware 6Outdoor clothing made from loden, produced in the EUStore development
- Kachouri Getränke-ServiceShopware 5Drinks delivery service for Aachen and the surrounding areaStore development
- Roof-Designer2024 — now3D configurator for patio roofs with Three.js, Laravel & VueFull-Stack
- MC-HOST242023 — 2024Website & APIs for a hosting provider with 300,000+ customersLead developer
- Gamesrocket2022Store under the Strictly Limited Games umbrella, 50+ gamesFrontend
- GThang.GG2022Network management, SPA & Twitch sync, 100+ TB/monthFull-Stackoffline
- JONI Solutions2022Agency for Shopify & ShopwareFull-Stackclosed
- Game title2020 — 2022Websites, bots & tools · 3M+ copies soldWeb & toolsNDA
- Hosting company2020 — 2021Game servers, domains & root servers for 50+ gamesFull-StackNDA
My company
Wolfscastle
Through Wolfscastle I deliver client projects and run my own products. So I think in operations, costs and scale, not just features.
OwnerFounded 2024 · Wolfsburg
Web and commerce development for scalable growth and clear running costs: Shopware & Shopify, web platforms and managed server hosting. Fully remote, always with direct communication.
Official Shopware Extension PartnerE-commerceWeb platformsManaged serversConsulting
- Projects delivered
- 80+
- Years of team experience
- 20+
- Languages & frameworks
- 120+
- Founded in Wolfsburg
- 2024
Products under the Wolfscastle roof
- /01Gameserver
RespawnHost
Rent game servers pay-per-use: only pay while you play. 60+ games, servers online in 90 seconds, data centres in Europe, the US and India. Officially licensed Hytale host.
2,500+ game servers
respawnhost.com
- /02E-Mail · SaaS
Sendwolf
API-first e-mail service for developers: templates with variables and multiple languages, your own SMTP infrastructure or Sendwolf delivery. Hosted in the EU.
12,000+ e-mails sent
sendwolf.de
- /03API · B2B
Domain-Reseller-API
Domain ordering system with a REST API: register and manage 2,000+ TLDs at reseller prices, no base fee and no minimum volume.
170+ domains managed
domain-reseller-api.de
- /04In development
Chatwolf
API-first support platform: tickets, embeddable live chat, webhooks for Discord and Slack, and multiple brands in one panel.
chatwolf.de
- /05Planned
Luparix
Web hosting with everything around it: business VPS, domains, business e-mail and Plesk licences from a single source.
luparix.com
Journey
Timeline
From a self-built clan website to my own company with several products.
Age 14
First websites
There was no money for expensive designers, so I taught myself. My first sites were for gaming clans.
Age 17
Self-employed
The hobby became a profession: my own clients, my own projects, my own responsibility.
Age 19
From frontend to full-stack
Alongside design and frontend came backend, databases, servers and everything else an application needs.
2020 — 2022
Hosting & gaming
Platforms for a hosting company with 50+ games, plus websites, bots and tools for a game with over 3M copies sold.
2022
Platforms & agencies
GThang.GG with 100+ TB of traffic per month, frontend for Gamesrocket (Strictly Limited Games) and store projects with JONI Solutions.
2023
Founded RespawnHost
Pay-per-use game servers, born from my own experience as a player. Over 2,500 game servers provisioned since.
2023 — 2024
Lead developer at MC-HOST24
Responsible for the website, updates and numerous APIs of a hosting provider with over 300,000 customers.
2024
Founded Wolfscastle
My company for e-commerce, web platforms and managed hosting. Plus the 3D configurator for Roof-Designer.
2025
Domain-Reseller-API
My own domain ordering system with a REST API for hosting providers, agencies and developers.
Today
Products & my own games
Sendwolf, Chatwolf and Luparix are growing under Wolfscastle, alongside games of my own like Hearthsail and Codeguess.
What I charge
Pricing
Clear prices instead of surprises. You know where you stand before we start.
Hourly rate
/01For ongoing development, support and smaller tasks
75 €/ hour
plus VAT
- Billed by effort
- Maintenance & support
- Short-notice work
- Monthly hour packages possible
Project
/02For new websites, stores, apps and platforms
from799 €/ project
Quote after briefing · plus VAT
- Concept, design & development
- Fixed quote up front
- SEO & performance baseline
- Handover & onboarding
All prices are net, plus statutory VAT. Projects are invoiced via Wolfscastle.
Good to know
FAQ
What kind of projects do you take on?
Websites, online stores with Shopware and Shopify, web apps, SaaS platforms, APIs, games and hosting infrastructure. Ideally for SMEs, online retailers and creators.
How much does a project cost?
My hourly rate is €75 net, projects start at €799 net. After a short briefing you get a fixed quote with no hidden costs.
Do you build WordPress sites?
No. I use modern, maintainable technology that loads fast and stays secure. Either do it properly or not at all.
Do you use AI?
Yes, as a tool, not as a replacement. AI helps me work faster. Architecture, quality and responsibility stay with me.
How fast do you reply?
Within 24 hours. I deliver projects through my company Wolfscastle, fully remote and with direct communication.
Do you offer maintenance and support?
Yes. After launch I keep looking after projects: updates, security, performance and further development, billed by effort or as a monthly package.
Let's work together
Contact
Got a project in mind? Let's talk.
- Reply within 24 hours
- AI-accelerated, hand-crafted responsibility
- Fair, transparent pricing
- Happy to sign an NDA
I deliver projects through my company Wolfscastle: contract, invoice and support from a single source.