Custom software for staffing agencies
We build software that simplifies recruitment, placement, and planning. From candidate management to time tracking — fully tailored to how your staffing agency actually works.
- Always up-to-date overview of candidates and placements
- Automated time tracking and invoicing
- Smooth collaboration with clients and hiring companies

10+
+10 years of experience
50+
Successful projects
10/10
Rating
20M+
Lines of code
Why custom software for staffing agencies?
Every staffing agency operates a bit differently — with unique procedures, contract types, and client agreements. Standard software is often clunky or limited. Custom software gives you control, speed, and reduces manual work.
Whether it's about matching, planning, time tracking, or invoicing: we build software that makes your job easier.
Quickly match candidates to job openings
Online registration and digital signing
Real-time planning and availability
Time tracking via app or portal
Automated contract generation and payroll prep
Integrations with AFAS, Nmbrs, or Loket.nl
Our approach
We start with a short analysis of your workflow. What currently takes a lot of time? What could be smarter? Then we build a tailor-made solution. We start with a solid foundation and can expand with additional modules later.
Introduction
Together, we dive straight into a creative session where we discuss dreams, ideas, and innovative solutions. With a fresh dose of inspiration, we kick off our collaboration, focused on ambitious yet achievable goals.
Design and sprint
We get started right away! After our inspiring session, we present an initial concept. As soon as you give the green light, we immediately begin the first sprint and take the first steps toward your software.
Software setup
We set up a seamless staging environment to ensure a smooth transition from development to production. Here, we thoroughly test all new features and updates to ensure they meet the highest quality standards before going live.
Development
Our team of experts dives into designing and building intuitive, user-friendly software. We make sure every feature aligns perfectly with your needs and those of your users.
Launch
The moment of truth: We go live! After an intensive testing phase, we launch the software or web application, ready to impress users with new features and capabilities.
Monitoring & updates
Our involvement doesn’t stop at launch. We continuously monitor the software and roll out updates to ensure optimal performance.
Continuous development
We keep building! Ongoing sprints deliver new results and innovative solutions. Your software grows with your business and stays aligned with the changing needs of your users.
Our principes

Why choose Rocksolid?
We are a team of experienced professionals who elevate your organization with thoughtful, high-quality software. From the very first idea, we actively think along with you — from strategy and design to development and continuous improvement. Thanks to our streamlined approach and flexible mindset, we can move quickly and build solutions that truly match your organization and users.
Security
We conduct thorough security analyses and regular updates to ensure your software is protected against the latest threats. This ensures a safe and reliable user experience.
Optimization
We ensure speed and efficiency by continuously analyzing and improving. From load times and responsiveness to overall usability, we provide an optimized application that grows with your business.
Scalable
We design software that can easily grow with your company, capable of handling traffic spikes and increasing user numbers without compromising performance.
Technologie

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We developed an internal scheduling system allowing staff to efficiently plan and manage treatments, preliminary exams, and check-ups.

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An analytics and reward platform for X Spaces that gives hosts insight into their audience and automatically rewards loyal listeners.

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Peau'DorHeadless Shopify webshop
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A WooCommerce webshop for Otentic Perfumes that combines luxury, speed, and ease of use — ready for international growth and brand reinforcement.

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A modern WordPress website for Vorwerk & Co that makes them professionally visible online and gives their team full content management control.

UNG CosmeticsWooCommerce webshop for cosmetics
A visually strong WooCommerce webshop for UNG Cosmetics, focused on conversion, brand experience, and easy management for the marketing team.

RolingWordPress website for insulation services
A professional WordPress website for Roling Isolatiebouw that clearly presents their services and projects — built for trust and new inquiries.

AtozLabsCreate, deploy, and mint NFT collections
A no-code NFT generator for creating, deploying, and selling thousands of unique images — with a mint page and support for Ethereum, Solana, and Zilliqa.

ZilliqaSam McKnight NFT drop
An exclusive NFT drop for Sam McKnight on Zilliqa, featuring unique artworks, a branded mint page, and unlockable content — ready for both the web3 community and loyal fans.

xCoHostManage your X Spaces like a pro
A platform to professionally manage your X Space — from speaker scheduling and invites to a live dashboard — used by thousands of hosts and millions of listeners.

HSI InstallatiesWordPress website for floor heating specialist
A professional WordPress website for HSI Installaties that clearly presents their underfloor heating services and is easy to manage in-house.
Reviews
Rocksolid has been the driving force behind our platform for over a year. So far, they’ve helped us with everything from maintenance and bug fixing to developing new features. They work quickly, which keeps the expansion of our platform affordable. The collaboration is also smooth and efficient. We create a development roadmap together, and they also make time for urgent tasks on short notice. Because they’re so accessible, our platform is always up and running.

David
ReviseMe
An exceptional development company with outstanding service! A friendly and young team with a driven way of working! They build beautiful and fast websites! I can recommend them to everyone! Their approach is unique in the industry, striking a perfect balance between professionalism and a personal touch. They truly listen to the client’s wishes and translate them seamlessly into design and development.

Rick
LidekaHome
If you are looking for reliable developers who listen, challenge you to develop better software architecture and are fair in their work with you - you found your team. Mark and Daan have tremendous experience across mobile, web and blockchain and I could not recommend them more for any job at hand.

Fred
SuperSpacesAI
Rocksolid truly impressed us with their professionalism and efficiency. Their team delivers fast and reliable work, and communication is always smooth. The app they developed for us is not only functional but also looks fantastic. We’re very satisfied and definitely recommend them!

Roel
HSI Installations
We build web applications that work the way your people work: fast, clear, and mobile-friendly. From candidate management to client portals — everything is tailored to your workflow.
The backend runs on Laravel or Node.js, with a modern frontend built in React or Vue. This allows us to develop quickly and easily integrate with systems like AFAS, Loket.nl, or your accounting software.
Some concrete examples of what we build for staffing organizations:
- Candidate portals with registration and CV upload
- Online scheduling with daily availability
- Mobile time tracking for temp workers
- Digital contract signing
- Client dashboards with placements and invoices
We often build modular: you start with what you need now (e.g. registrations + time tracking), and expand later. The software usually pays for itself quickly.
Some benefits:
- Less admin → more placements per employee
- Faster communication → happier clients & candidates
- Always insights → better decision-making