Software Engineer
Build the realtime backend that streams live phone calls through an AI voice model: TypeScript, GCP, low latency and LLM orchestration.
RemoteFull-time32-40 uur
Working at Sainer
Want to be up on stage with us too?
We celebrate the wins together, and in between, we build AI that keeps the Netherlands reachable. Come strengthen our founding team?
Why Sainer
Make the Netherlands reachable.
At Sainer we believe voice is the interface of the future, the most natural way to interact. That's why we're building a fundamentally new, scalable AI voice solution on the KPN network. People-first, AI as an upgrade to the front desk: the receptionist that never sleeps.
We're at the start of something big, with a clear vision and a rock-solid technical partner. A small founding team, big plans. No legacy, no bureaucracy. You build with a clean slate, and everything you make is immediately visible and critical.
The team
The people you'll build alongside.
Small team, short lines. Soon you'll be here too.
Edwin van der Geest
CEO
Kees van Bemmel
CTO
Willem Bens
CRO
Quinten Vollmer
AI Software Engineer
Don Dayan
Developer Intern
How we work
Small team, short lines.
Fast decisions and the room to get it right the first time.
We work mostly digitally. Every month we get together in person, and once a year we plan an amazing trip.
Why here
For me, nothing matters more than getting to do your work with joy and passion. And ideally in a team where you feel at home, of course. But finding a place where all of that comes together isn't so easy. At Sainer, I've found that place.
So if you also want to feel that your work has a direct impact, build supercool solutions with a bunch of nerds, or show our new demo to a client who immediately asks where to sign... What are you waiting for?
Don Dayan
Developer intern
Open positions
Our vacancies
Didn't find a matching role? We'd still love to hear from you.
Forward Deployed Engineer
The bridge between commerce and tech: build the custom integrations and actions at the customer that close the deal.
RemoteFull-time32-40 uur
VoIP Engineer
Run the telephony layer under our AI: OpenSIPS or SIPhon routing and a FreeSWITCH RTP cluster on GCP. Every call connected reliably and at low latency.
RemoteFull-time32-40 uur
Ready to build?
No matching role? We'd still love to hear from you.
Don't send us a boring cover letter. We'd rather see your GitHub, your LinkedIn, or a few lines about a project you're proud of.