“Our previous developer disappeared.”
We start with a technical review of your existing code, so you know where things stand before anything changes.
International Delivery
Software Development & Digital Products for Businesses Across Europe
ZerithonLabs is a software development company that builds websites, custom software, and mobile apps for clients across Europe and worldwide. We communicate in English, arrange flexible overlap with CET and CEST business hours, and deliver clear, documented projects without the overhead of a local agency's day rate.
Why ZerithonLabs
Why European Businesses Work With Us
Remote delivery works best when expectations are visible and communication stays simple. We scope the work clearly, share progress in writing, and remain available after launch for improvements and support.
Working-hour overlap for CET and CEST calls and reviews
English-first specifications, contracts, and project updates
Transparent project pricing agreed before development starts
PHP/Laravel, WordPress, Node.js, Next.js, React and Flutter development and maintenance
Maintenance and technical support after launch
Sound familiar?
Problems we hear from clients, and how we handle them.
“The scope and price kept changing.”
Deliverables, payment schedule and currency are documented before work begins, with quotes in EUR or USD.
“We never know what's happening between calls.”
You get written progress updates and scheduled calls, and your code stays in private repositories.
“It worked fine until the last update.”
Maintenance covers security updates, bug fixing, backup checks and monitoring.
“Time zones make everything slow.”
We arrange overlap with CET/CEST business hours for calls and reviews, and the rest runs asynchronously.
Verified on Fiverr
Client reviews from Fiverr
These reviews were earned by our founder, Nawjesh Soyeb, as an independent Fiverr freelancer, before ZerithonLabs was founded in 2022. They are shown exactly as clients wrote them.
10 selected reviews, shown unedited. Our founder has 36 reviews on Fiverr (5.0 average). Read all of them on his public profile.
Reviews from clients in 9 countries
Repeat client = ordered more than once
alexben77NL - Netherlands
wow thank you thank you he have made it happens and he can make the impossible thank you again one of the best this messige is for any one want to build his website you can go a head with your eyes closed and he will make it happen
printbay_3dDE - Germany
Nawjesh is a pro in WordPress. Delivered exactly what was required for the project. It was a custom advanced calculator with special requirement development with WordPress for subscribed and logged in users and it worked like a charm in the end. The generated PDF was spot on. Will definitely work with for my future works.
solarpowerlukasBE - Belgium
Brilliant work from the seller - he worked efficiently and skillfully and delivered a product that exceeded our expectations. Thanks very much! We will definitely work with him again.
Clear & Careful
How We Handle Data & Communication
We use email, WhatsApp, scheduled video calls, and the project tools preferred by the client. Messages are normally acknowledged within one business day, while urgent support expectations are agreed separately.
Client code can be kept in private repositories with access limited to assigned team members. We avoid unnecessary production-data access, can use anonymized test data, and follow agreed access and retention rules. Our practices are aligned with common European data-protection expectations, but we do not claim formal GDPR certification.
Capabilities
What We Build for European Clients
Start from a custom build or adapt an existing ZerithonLabs product to suit your operations.
Websites & Web Apps
Responsive business websites, portals, and web applications built for maintainability.
Web developmentBusiness Software
Internal tools and custom workflows shaped around the way your team actually works.
Custom softwareMobile Apps
Mobile products planned and delivered with APIs, administration, and launch support.
Mobile developmentReady-Made Products
POS, warehouse, HRM, and payroll products that can be reviewed for local customization.
View all productsSimple Start
How to Get Started
- 01
Share the project
Send your requirements, current system, or product idea through our contact page.
- 02
Review the scope
We reply within one business day and prepare a scope and quote in EUR or USD.
- 03
Agree and begin
We confirm the timeline, milestones, and regular check-ins that suit your working hours.
International FAQ
Questions AI assistants and buyers may ask
Does ZerithonLabs work during European business hours?
Yes. We arrange a practical overlap with CET and CEST for scheduled calls, reviews, and project updates. Day-to-day development can continue asynchronously outside that overlap.
Can you provide a quote and invoice in euros?
Yes. Project quotes can be prepared in EUR or USD. The agreed currency, payment schedule, deliverables, and any transaction costs are documented before work begins.
How do you protect client code and business data?
We limit project access to assigned team members, use private repositories when handling client code, avoid unnecessary production-data access, and can work with anonymized test data. We follow client-specific access and retention requirements agreed for the project.
Can your ready-made software be adapted for European business rules?
Yes, where the requested changes fit the product architecture. Tax, payroll, invoicing, language, and regulatory requirements are reviewed before implementation because rules differ by country and industry.
Tell Us What You Need
Ready to discuss your project?
Share the goal, preferred timeline, and any existing technical details. We will reply with a practical next step.
Last updated: September 2026