Remote-friendly
Work from Sofia, from home or anywhere in the EU, with two team offsites a year.
Careers
Help publishers earn more from every impression.
A small, senior team in Sofia and across Europe. Remote-friendly, product-obsessed and fast.
Senior Machine Learning Engineer, Yield prediction
Own the models that predict eCPM, fill probability and latency for every partner, on 1.2 billion requests a day.
What you will do
- Design, train and ship prediction models that run in under 40 ms
- Build the experimentation framework that keeps the models honest
- Work with yield managers to turn their intuition into features
What you bring
- 5+ years of applied machine learning in production
- Strong Python, and comfort with a compiled language
- Ad-tech, pricing or recommendation experience is a plus
Backend Engineer, Real-time routing
Keep the routing API fast and boring at 120,000 requests per second, across four regions.
What you will do
- Build and operate the low-latency decision path
- Own reliability: observability, load tests, incident reviews
- Integrate new ad partners over OpenRTB and REST
What you bring
- 4+ years building high-throughput backend services
- Go, Rust or Java, and solid knowledge of networking
- You enjoy shaving milliseconds off a p95
Frontend Engineer, Analytics dashboard
Make billions of rows of revenue data feel instant and obvious to ad ops teams.
What you will do
- Build the dashboard, reports and explorer in TypeScript
- Design data-dense interfaces with our product designer
- Care about performance budgets and accessibility
What you bring
- 4+ years of frontend engineering on complex web apps
- Strong TypeScript, and taste for clean UI
- Experience with charts and large tables is a plus
Yield Operations Manager
Be the expert our publishers call: onboard them, read their data and turn it into revenue.
What you will do
- Onboard new publishers and their ad partners
- Analyze performance and recommend rules and formats
- Feed product and data teams with what you see in the field
What you bring
- 3+ years in yield, ad ops or monetization
- Hands-on with popunder, push or display networks
- Fluent English; Spanish or Portuguese is a plus
Partner Manager, Ad networks
Grow the partner program: bring the right networks and SSPs on board and help them win more impressions.
What you will do
- Source, qualify and sign new ad networks and SSPs
- Run integrations with our engineering team
- Share win and loss insights with partners
What you bring
- 4+ years of partnerships or business development in ad tech
- A network across performance and programmatic players
- Comfortable with both commercial and technical discussions
Product Designer
Design how publishers understand and control an AI that handles their revenue.
What you will do
- Own the design of the dashboard, explorer and onboarding
- Prototype, test with publishers, iterate fast
- Maintain our design system with the frontend team
What you bring
- 4+ years of product design on B2B or data products
- A portfolio with complex, data-heavy interfaces
- You write clear copy and sweat the details
Benefits
What you get, wherever you work from.
Equity for everyone
Every permanent employee owns a part of the company they help build.
25 days off
Plus public holidays, and a real expectation that you take them.
Private health insurance
Full coverage for you, and for your family if you want it.
Learning budget
€1,500 a year for courses, books and conferences of your choice.
Your own setup
The laptop and equipment you work best with, and a home office budget.
Offsites
Twice a year, the whole team meets for a week of planning and fun.
Office in Sofia
A bright office in Oborishte, five minutes from the city centre.
Hiring process
Four steps, about two weeks.
No brain teasers and no take-home longer than three hours. You get feedback at every step.
30 min
Intro call
A conversation with the hiring manager about the role, the team and what you are looking for.
60 min
Skills conversation
A practical discussion around a real problem we solved, or a short exercise you prepare.
Half a day
Meet the team
Meet the people you would work with, in Sofia or online, and ask them anything.
48 hours
Offer
A clear written offer within two days of your last interview, equity included.
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