Om tjänsten
What will you do?
As a Senior Machine Learning Engineer you will define how AI is done at Rebtel. What tooling we standardise on, how we evaluate
models we put in front of real users, what "good" looks like for our prompts and our pipelines. AI is going from a side project to
the core of how Rebtel operates and what we ship to our users. We're hiring the second engineer on our ML/AI subteam to help build
it classical ML for the business, LLM-powered systems for the product, and a clear production mindset on both.
You'll sit inside the Data team, report to our Head of Data, and partner with one other ML/AI engineer to shape this capability
from the ground up.
Areas of ownership:
You'll own work across two complementary tracks, and you'll ship in both.
Classical ML, in production, for operational leverage
LLMs and AI agents, from internal automation to in-product features
- Help guide the company on where AI actually creates leverage, what to build, what to buy, what to ignore and turn the good
ideas into shipped systems
Requirements:
- You are an excellent communicator and collaborator. We work in English, but you will hear many languages in our Stockholm
office
- Strong fundamentals in classical ML: feature engineering, model selection, validation, and the unglamorous parts of keeping a
model healthy in prod
- A genuine production mindset: monitoring, retraining, eval harnesses, CI/CD for models, and the instinct to debug when
something drifts at 2am
- Comfortable with vector databases, embeddings, prompt evaluation, and measuring LLM systems with something more rigorous than
vibes
Why Rebtel?
Rebtel has been connecting people across borders for nearly 20 years. Today, we’re profitable, growing, and at a pivotal moment in
our journey. As we enter our next phase, we’re building an organisation designed for speed, ownership, and real impact, where
every role contributes directly to shaping what comes next.
This is a place with global ambition and a strong foundation, where ideas move quickly and decisions matter. You won’t get lost in
layers of process or slow-moving structures. Instead, you’ll find the space to take ownership, collaborate across teams, and make
meaningful contributions from day one. Based in Stockholm, we bring together a diverse, international team united by a shared
purpose: to simplify the way people connect worldwide.
At Rebtel, you are the most important asset and we strive to provide a comprehensive package of benefits and perks that enhance
your well-being and work experience. Here are some of the things you can expect from us:
We are Rebtel. We come from all around the world to create products for anyone who has crossed a border. We believe in equal
opportunity and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin,
gender, sexual orientation, age, marital status, veteran status, or disability status.