Fullstack Integration Developer

Rentman is a B2B SaaS scaleup building a smart, powerful operations management platform to support event and media production teams. Our users plan everything from small shoots to massive festivals in 70+ countries, and they all rely on Rentman to keep their gear, people, and timing perfectly in sync. We’re based in Utrecht (NL) with a second office in Toronto (CA), and our 100+ team members work in a culture that’s open, flat, and inclusive, where curiosity drives us, ownership matters, and everyone has the freedom to challenge ideas and make an impact.

Mission of this role

As a Fullstack Integration Developer, you make sure that scanners, Zebra devices, the RFID gate and all related hardware work reliably and seamlessly with Geartracking and Rentman. You own and build the middleware that connects devices to our cloud APIs and apps, keeping things stable, fast and maintainable with minimal support overhead.

In this role you are the main technical point of contact for everything hardware-related. You work closely with the Rentman product and development teams, escalate blockers quickly and make sure knowledge is documented and never dependent on a single person. You work largely independently, making your own technical decisions and owning the end-to-end integration flow.

What you'll do

• Design, build and maintain the middleware that connects scanners, RFID gates, mobile devices and cloud APIs
• Develop and continuously improve the end-to-end hardware-to-cloud integration flow for our RFID gate
• Develop and extend integrations for new hardware and products as we grow
• Debug scanner, RFID or middleware issues and resolve them within 48 hours
• Monitor stability and performance of integrations and proactively address weak spots before they become problems
• Lead technical decisions and internal workflows related to hardware and middleware
• Act as the main technical contact for Rentman and escalate blockers quickly
• Document middleware architecture, integrations and setup so knowledge is shared and accessible

What makes a successful Fullstack Integration Developer

• Experience with PHP
• Experience with Java, Kotlin or Android development
• Able to work independently and take full ownership of the domain
• Strong problem-solving and communication skills

Nice to haves

• Previous experience with software-to-hardware integrations on Android and/or iOS
• Experience with Capacitor plugins
• Background in the AV rental, broadcasting or event industry

What you’ll get

• An ambitious, inclusive, diverse international team
• A competitive salary based on experience and an additional 8% of your yearly gross income paid out every May
• A “13th month” annual bonus based on company results
• 25 days of paid vacation, plus one extra day off each year up to your 5-year anniversary
• A paid 4-week sabbatical after 5 years to go on an adventure
• Flexible WFH policy & work from anywhere for 4 weeks a year
• A shiny Windows or Mac of your choice
• An annual training budget to boost your skill
• A comprehensive healthcare plan and a pension plan with 3% company matching
• Access to OpenUp for mental well-being and personal growth
• A flexible and engaging work environment and various team activities
• An amazing office in the heart of Utrecht