Custom Employes integration development
Appfront builds custom Employes integrations that connect your HR and payroll administration with your own application, time registration or accounting. Via the official Employes API and webhooks, we keep employees, contracts, leave and payroll data automatically in sync. You avoid duplicate entry, reduce the risk of errors and keep your SME administration always up to date.
What is an Employes integration?
Employes is online software for HR and payroll administration, aimed at SMEs. In one environment, you manage employees, contracts, leave and absence, time registration and the full payroll administration with payslips. Many organisations do not want to keep this data isolated, but want it to flow alongside their own systems. That is where an integration comes in.
In practice, a custom integration means keeping employees and contracts in sync with your own application or HR portal, automatically loading hours worked from a scheduling tool into Employes, exchanging leave and absence data, making payslips available and passing journal entries on to your accounting. Webhooks pass changes on in real time, so everything is always up to date.
Appfront builds in line with the official Employes API documentation and the OWASP ASVS security standard. We align the synchronised fields, the direction of the sync and the error handling with your actual HR and payroll processes, so the integration grows with your organisation and remains reliable during monthly payroll runs.
Employees always in sync
New employees, contract changes and leavers flow automatically between Employes and your own systems. No duplicate entry and no outdated personnel data: the administration is accurate on both sides.
Payroll and leave data made accessible
Payslips, pay components, leave balances and absence records become available in the systems where you need them. Your team works from a single source of truth, without manually re-typing data.
Hours and accounting connected
Hours worked flow from your planning or time registration into payroll administration, and journal entries pass to your accounting software after the payroll run. Less manual work around salary processing and a tidy, reconciled administration.
Our development process for Employes integrations
We work to a proven methodology that removes uncertainty early and delivers a stable integration. From an initial analysis of your HR and payroll processes and the systems to be connected, through to go-live and ongoing management, every step is aimed at an integration your team can understand and trust.
We map out which data you want to synchronise (employees, contracts, leave, hours or payroll data), the direction in which the sync should run, and which systems Employes needs to communicate with.
We design the integration architecture based on the Employes API, choose the right authentication and set out a strategy for error handling and idempotent processing.
Implementation with automated tests, structured logging and monitoring. You see working builds along the way.
Controlled go-live with data validation and a safety net, followed by ongoing management and further development.
What an Employes integration delivers in practice
Every Employes integration is set up specifically for your HR and payroll processes and the systems around them. Below are the features we most often deliver for organisations that use Employes as the core of their HR and payroll administration.
API integration & authentication
A robust connection to the official Employes API (v4) with scoped access per administration. We set up secure authentication, rate-limit-friendly processing and structured error handling, so the integration stays stable during daily and monthly processing runs.
Employee & contract sync
Employees, employment contracts and contract changes are kept in sync between Employes and your own application or HR portal. Joiners and leavers flow through automatically, so your staff records are accurate everywhere and line up with payroll.
Leave & absence
Leave requests, leave balances and absence records are exchanged with your rostering or HR system. This way, planners and line managers always see current availability, and balances in Employes and your own system stay aligned.
Payroll administration & payslips
Pay components, changes and payslips are made available to the systems where you need them. Variable pay, allowances and expenses can be supplied from your own processes, so the monthly payroll run goes smoothly and with fewer errors.
Hours integration
Hours worked from your rostering, point-of-sale or time-tracking system are automatically loaded into Employes payroll administration. No more manually retyping timesheets: the basis for pay is always current and traceable to its source.
Webhooks & journal entries
Webhooks pass changes in Employes on to your systems in real time, so you don't need to poll. After the payroll run, we forward journal entries to your accounts, so payroll costs land in your financial administration immediately and correctly.
Typical use cases in practice
An Employes integration looks very different from one organisation to the next. We often see a number of recurring patterns — and for each of them we have a working setup, with attention to the right fields, synchronisation direction and error handling.
SMEs with their own systems
Growing small and medium-sized businesses that use Employes for HR and payroll administration and want their data to run alongside their own application or HR portal. Employees, contracts and leave stay in sync, without duplicate entry. See also our API integrations and middleware.
Hospitality & retail
Hospitality and retail organisations with shifting rosters and high volumes of hours changes. Hours worked flow automatically into Employes from the rota or point-of-sale system, so pay is accurate and retyping timesheets disappears. Leave and availability stay aligned with the roster.
Professional services
Service providers and agencies who want employee data and contracts kept in sync with their own onboarding and project systems. New employees are set up correctly in one go, and changes flow automatically via webhooks to the systems that depend on them.
Accountancy and bookkeeping firms
Bureaus that run payroll administration in Employes for multiple clients. Journal entries pass automatically to accounting per administration after the payroll run, and mutations are processed in a structured way. See also our integrations with Loket.nl and Officient.
Technology we use
We build Employes integrations using the official Employes API (v4) and webhooks, combined with the backend stack that suits you. The exact choice depends on the systems you want to connect, so your own team can manage or further develop the implementation.
Why choose Appfront for your Employes integration?
Appfront has extensive experience building API integrations for a wide range of organisations in the Netherlands. We always start with a thorough analysis of your existing systems and processes. An integration should not only work technically, but also add practical value to the way you work.
For every integration, we write clear documentation and make sure your own team, or any future supplier, can understand and manage it. No black box, just transparent code and clear agreements on monitoring, alerting and maintenance.
You work with a dedicated point of contact who understands both the technical and the functional side. This keeps communication short, prevents misunderstandings and speeds up decisions when choices need to be made during development.
See also our wider services around API integrations, middleware, custom software development and web app development.
- Experience with the Employes API and HR and payroll data flows
- Secure by default — scoped access, webhook signature validation, least-privilege permissions
- Clear documentation that your team can read and manage themselves
- A dedicated point of contact and ongoing management, tailored to your IT landscape
Security and privacy in Employes integrations
Personnel and payroll data are among the most sensitive in any organisation: names, citizen service numbers (BSN), contract details, salaries and absence records are all personal data. Appfront builds to the OWASP ASVS standard. That means, among other things: API credentials kept in secure vaults, webhook signature validation, permissions scoped per administration, and regular audits of the data flows.
We process only the fields that your integration genuinely needs and apply data minimisation. We map and document the data flows between Employes and your systems, so your record of processing activities is complete and you can demonstrably comply with the GDPR. Where we process personal data on your behalf, we record this in a data processing agreement.
More on our security approach: information security policy and CVD policy.
- GDPR-compliant data processing and data minimisation
- Encryption in transit (TLS 1.2+) and at rest
- Role-based access and least-privilege principles
- Audit logs with traceable data flows
- Automatic retries and dead-letter queues
- Monitoring and alerting for anomalies
- Secrets management in line with best practice
- Documentation for your record of processing activities
Frequently asked questions about Employes integrations
Answers to the questions we receive most often about Employes integrations.
An Employes integration is a technical link between Employes and another system, such as your own application, time registration, HR portal or accounting package. Using the official Employes API (v4), employees, contracts, leave, hours worked and payroll data are exchanged and synchronised programmatically. Webhooks pass on changes in real time. An integration can be simple (automatically creating employees) or extensive (two-way sync of contracts, leave balances, payslips and journal entries to your accounting).
Employes suits SMEs that manage HR and payroll administration online and want to make this data available to other systems. An integration makes sense if you want to avoid duplicate entry between Employes and, for example, your scheduling, time registration, onboarding portal or accounting. If you have your own application that needs employee or payroll data, an API integration keeps that data automatically and reliably in sync.
A simple integration, such as creating employees or synchronising contracts via the Employes API, can go live within a few weeks. More extensive scenarios with two-way sync of leave and hours, payslip exchange, journal entries to accounting and webhook-driven workflows usually take longer. After an intake meeting, we give a realistic estimate based on your situation.
We work with the official Employes API (v4) and webhooks, combined with the backend stack that suits you: Node.js, Python, PHP, .NET, Ruby or Go. Authentication follows the method prescribed by Employes, with scoped access per administration. For reliable synchronisation, we implement idempotent processing, retry mechanisms and structured logging, so employee, leave and payroll data stay consistent across the connected systems.
Costs are determined by the complexity of the data flows, the number of systems to integrate, the desired direction and frequency of synchronisation, and the amount of custom business logic. Ongoing management, monitoring and support also play a part. We always provide a clear quote following a no-obligation analysis of your situation.
Yes. Personnel and payroll data are by definition personal data, often of a sensitive nature. Appfront builds to the OWASP ASVS standard: API credentials kept in secure vaults, webhook signature validation, permissions scoped per administration and least-privilege access. We only process the fields that are needed, record the data flows and document them, so your record of processing activities remains complete and you can demonstrate GDPR compliance.
Yes. Appfront regularly takes over existing integrations, even if they were originally set up by another party. We review the API integration, the synchronised fields, the webhook configuration and the error handling, document the current setup and propose improvements. From that point on, we handle adjustments, extensions and monitoring, including timely rotation of credentials.
Employes is aimed at SMEs. An integration suits hospitality, retail, business services, metal and technical trades, transport, and accountancy and bookkeeping firms that run payroll administration for multiple clients. Typical scenarios: hours worked from a planning tool automatically flowing into Employes, keeping employees and contracts in sync with your own HR portal, and passing journal entries on to the accounts.
Ready to build your Employes integration?
Tell us which data you would like to keep in sync between Employes and your own systems, such as employees, contracts, leave, hours or payslips, and we will gladly help you plan the setup, the direction of synchronisation and the error handling. A no-obligation first conversation will give you a clear picture of what is possible within half an hour.