SLONI — a Tönisvorst-based manufacturer of children’s climbing walls and movement furniture, produced in its own on-site production facility — is seeking an experienced Webentwickler / PHP-Entwickler (m/w/d) to own, maintain, and technically advance its WooCommerce e-commerce shop. This is a full-time position based in Tönisvorst, NRW, with flexible Homeoffice arrangements — requiring solid WooCommerce experience, very good PHP skills, REST API and Git experience, and a good working knowledge of JavaScript, HTML, and CSS. No stiff cover letter required — send a short description of your background, why this role fits you, and optionally your GitHub profile. If it’s a match, SLONI will invite you to a Praxistag (practical trial day) to see if the fit is real. Contact: anastasia@sloni.de
About SLONI — Climbing Walls, Movement Furniture & Your E-Commerce
Products: Children’s climbing walls and movement furniture — custom manufactured in SLONI’s own Tönisvorst production facility
Sales: The WooCommerce shop is one of SLONI’s most important sales channels — your direct responsibility
Scale: Small, focused team — no departmental silos, short decision paths, real ownership from day one
Special: A few metres from your desk, the products you promote in the shop are physically being made — you see your work come to life
Culture: Gestaltungsspielraum (real design space), echte Verantwortung (real responsibility), honest and direct — no Bewerbungstheater
What SLONI Offers — Warum SLONI?
🎯 Real Ownership: Echte Verantwortung statt Ticket-Abarbeiten — you own the shop, not just the backlog
🏠 Flexibility: Homeoffice nach Absprache — flexible remote working alongside Tönisvorst office presence
🏢 Modern Office: Modern workspace in Tönisvorst, NRW — right next to the production floor
👥 Small Team: A small team without department borders — everyone knows each other, decisions are fast
🪜 Unique Setting: Your work goes live, literally — the climbing walls you sell are built metres from your desk
🤝 Direct Application: No cover letter needed — just tell Anastasia what you’ve built and why this fits. GitHub welcome.
Position Overview
The Webentwickler / PHP-Entwickler at SLONI in Tönisvorst is one of those rare e-commerce developer roles that genuinely gives you ownership over something that matters to the business — not a ticket queue in a 200-person corporation, but the WooCommerce shop of a product manufacturer where your technical decisions about API integrations, performance, stability, and new functionality have a direct, visible, and immediate impact on sales, customer experience, and operational efficiency. SLONI builds children’s climbing walls and movement furniture in its own production facility in Tönisvorst, and the WooCommerce shop you will be responsible for is one of the organisation’s most strategically important commercial channels.
You will maintain and advance the WooCommerce shop, develop custom PHP functions, connect APIs and interfaces to shipping service providers and ERP systems, keep a sharp eye on performance, stability, and security, and serve as the technical sparring partner for freelancers and agencies working on SEO, SEA, and tracking. SLONI’s approach to hiring is as direct as its team culture: no stiff cover letter, no Bewerbungstheater — just send a short, honest note about what you have built and why this role fits, optionally with your GitHub profile, and if it looks like a match you will be invited for a Praxistag to see whether the fit is genuinely mutual.
Why the SLONI Webentwickler Role in Tönisvorst Is Distinctive in NRW’s Developer Job Market in 2026: Most web developer job postings promise ownership and impact — and deliver a Jira board and a standup. SLONI’s posting is different because the business context makes it genuinely true: a small team, a single WooCommerce shop that is one of the company’s primary revenue channels, a manufacturing facility metres from the developer’s desk, and a culture that values technical self-direction over process compliance. For a PHP and WooCommerce developer who wants their work to have a direct, traceable, and visible commercial impact — in a Tönisvorst employer that makes something real and doesn’t wrap the hiring process in unnecessary formality — this is an unusual and genuinely attractive opportunity in NRW in 2026.
Key Responsibilities — Was du bei uns machst
WooCommerce Shop Ownership & Development
- Own, maintain, and technically advance the SLONI WooCommerce shop — taking full technical responsibility for the shop as one of SLONI’s most important commercial channels, ensuring that the WooCommerce installation is current, well-configured, technically sound, and continuously improving in its ability to convert visitors into customers and support SLONI’s sales growth in the children’s climbing wall and movement furniture market
- Develop custom PHP functions and WooCommerce extensions — writing clean, efficient, and well-documented PHP code that adds the specific functionality SLONI’s shop requires beyond the standard WooCommerce feature set, from custom product configuration workflows and pricing logic through automated order processing and customer communication enhancements
- Keep a sharp eye on shop performance, stability, and security — monitoring the WooCommerce shop’s technical health, page load performance, uptime, and security posture, proactively identifying and resolving performance bottlenecks, plugin conflicts, and security vulnerabilities before they affect the customer experience or expose SLONI’s shop to risk
API Integration & Systems Connectivity
- Connect and maintain APIs and interfaces to shipping service providers, ERP systems, and other business-critical integrations — designing, implementing, and maintaining the API connections that allow SLONI’s WooCommerce shop to exchange data reliably with logistics providers, inventory management systems, accounting software, and other operational tools — ensuring that the shop’s back-end data flows are accurate, timely, and robust enough to support SLONI’s production-to-delivery operational process
- Apply solid REST API knowledge and Git-based development workflows — using RESTful API design and integration patterns to build reliable connections between WooCommerce and external systems, managing all code development and deployment through Git with the version control discipline and branching strategy that professional e-commerce development requires
- Apply working knowledge of JavaScript, HTML, and CSS to support front-end improvements and troubleshoot the user-facing aspects of the WooCommerce shop — ensuring that the shop’s user interface is functional, performant, and responsive across the devices and browsers that SLONI’s customers use to discover and purchase its climbing wall products
Technical Sparring & Agency Coordination
- Act as the technical sparring partner for freelancers and agencies working on SEO, SEA, and tracking for the SLONI shop — providing the technical context, access management, implementation guidance, and quality review that external partners need to deploy tracking tags, configure analytics, implement SEO improvements, and run paid search campaigns effectively without compromising the shop’s technical integrity or performance
- Contribute technical expertise to SLONI’s broader e-commerce strategy — applying WooCommerce and web development knowledge to the ongoing discussion of how the shop can better serve SLONI’s commercial goals, including new product presentation approaches, checkout optimisation, customer journey improvements, and integration of new tools or platforms as the business evolves
What You Bring — Was du mitbringst
Essential Requirements
- Practical experience with WooCommerce — not theoretical familiarity but direct, hands-on experience developing with, customising, and maintaining a production WooCommerce shop through real use cases, real integration challenges, and real customer-facing deployments
- Very good PHP knowledge — with the depth to write custom WooCommerce hooks and filters, build API integration services, develop custom plugins, and debug and optimise existing PHP code across a mature WooCommerce installation
- Experience with REST APIs and Git — able to design and implement API integrations independently, work effectively with external API documentation, and manage development through Git with appropriate version control practices
- Solid understanding of JavaScript, HTML, and CSS — sufficient to contribute to front-end improvements, troubleshoot theme and plugin compatibility issues, and implement minor UI changes without requiring a dedicated front-end developer for every task
- Technisch stark, selbstständig denkend, schnell einarbeitend — technically strong, independently thinking, fast to get up to speed in new contexts; SLONI explicitly values these qualities over perfection in every listed skill area
Why the SLONI Webentwickler Role in Tönisvorst Is Worth Your Attention in 2026
In a developer job market full of postings promising ownership and impact in organisations where those words mean something different in practice, SLONI’s job post for a Webentwickler in Tönisvorst stands out precisely because it is structurally honest about what it offers: a small team, a single important WooCommerce shop, a production facility metres from the desk, and a hiring process that skips the performance theatre entirely. For the right developer — someone who genuinely wants technical ownership rather than task assignments, who is energised by the connection between their code and a real physical product, and who prefers a short note and a Praxistag to a formal application process — that honesty is its own recommendation.
North Rhine-Westphalia’s e-commerce and manufacturing sector provides a stable, active market for WooCommerce and PHP development talent, and SLONI’s combination of genuine technical ownership, Homeoffice flexibility, small team culture, and the distinctive working environment of a children’s climbing wall manufacturer makes this Tönisvorst role genuinely memorable among the developer positions available in NRW in 2026. Send your application to anastasia@sloni.de — keep it short, keep it real, and if it fits, SLONI will be in touch.
Who Should Apply?
- WooCommerce Developers with PHP Custom Development Experience: Who have built and maintained real WooCommerce shops — writing custom hooks, filters, and plugins, integrating external APIs, managing plugin conflicts, and optimising performance — and who want to own that shop end-to-end in a small NRW manufacturer with real commercial stakes and short decision paths
- PHP Backend Developers Seeking E-Commerce Shop Ownership: With strong PHP skills and API integration experience — ready to step into a role where they are the primary technical responsible person for a business-critical e-commerce channel, not one developer among many in a large e-commerce engineering team where individual impact is diluted
- NRW-Based Web Developers Who Value Sichtbare Arbeit (Visible Results): Who want to see their work deployed and live within a short timeframe, in an environment where the products being sold through the shop they build and maintain are physically produced a few metres away — giving the developer an unusually direct and tangible connection between their technical work and the real business it supports
- Self-Directed Technical Developers Who Dislike Ticket Systems and Prefer Real Problems: Who are “technisch stark, selbstständig denkend” — technically strong and independently thinking — and who are energised rather than uncomfortable by a work environment where there is no large engineering team to escalate to, just a small, capable team, a clear business need, and the Gestaltungsspielraum to figure out the best technical solution
- Tönisvorst-Accessible Developers Open to Partial Homeoffice: Based in or able to commute to Tönisvorst (NRW, near Krefeld and the wider Rhine-Ruhr region) — comfortable with a working model that combines on-site office presence with flexible Homeoffice arrangements, and interested in working for an employer that makes a genuinely distinctive physical product in its own production facility
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