What you will do

About Appodeal

Appodeal is a dynamic US-based product company with a truly global presence.
We have offices in Warsaw, Barcelona and Virginia along with remote team members located around the world.
Our company thrives on diversity, collaboration, and innovation, making us a leader in the mobile app monetization space.

At Appodeal, we’re more than just a company—we’re a team united by a common mission: to help every person discover and grow their talents!
We take pride in our cutting-edge product and our internationally dispersed team of talented professionals.
Here’s what we value, and what we hope you do too:

• Continuous Learning and Growth: We are passionate about learning, growing personally, and building rewarding careers.
• Making an Impact: We are committed to building a history-defining company that leaves a lasting impact on the mobile app industry.
• Solving Exciting Challenges: We tackle complex problems every day, supported by a team of world-class professionals and mentors.
• Enjoying the Journey: We believe in having fun while working toward our goals.

About BidMachine

We are looking for a Scala Developer to join the BidMachine product team

BidMachine is a high-performance ad exchange platform that connects mobile apps with global advertisers in real time.
When a user opens an app and needs to see an ad, BidMachine processes the request, holds an auction among advertisers, and delivers the winning ad — all in under 200 milliseconds.
Every day we handle over 41.5 billion ad requests from 262+ million unique users worldwide.

We are now looking for an experienced Senior Scala Developer to join our core engineering team in Poland and help us scale, optimize, and evolve our real-time ad platform.

What You’ll Do

• Design, implement, and maintain highly scalable backend services written in Scala.
• Collaborate closely with engineers, data scientists, and product managers to define requirements and deliver impactful features.
• Contribute to system architecture, performance optimization, and fault tolerance improvements.
• Review code, share best practices, and help raise the technical bar for the team.
• Participate in planning and take a proactive role in shaping the technical roadmap.

Language & Team Culture

We appreciate:

• Teamwork — helping and learning from each other.
• Critical thinking — questioning and improving processes.
• Ownership — making decisions and standing by them.
• Curiosity — willingness to grow and explore beyond your comfort zone.

💡 At BidMachine, you’ll work with talented engineers who build systems designed for massive scale, real-time performance, and measurable impact.

With an outstanding product and a mission that excites and inspires, Appodeal offers a unique opportunity to make an impact while being part of an amazing team.
Join us and help shape the future of mobile app success!

What we offer

Why Join Us

• Work on a global-scale, high-load system that processes billions of real-time requests daily.
• Join a team that values engineering excellence, knowledge sharing, and autonomy.
• Be part of a collaborative, data-driven culture where ideas matter and innovation is encouraged.
• Flexible work setup — hybrid or remote within Poland.

Requirements

What We’re Looking For

• Solid hands-on experience with Scala, ideally with functional / typelevel programming (cats-effect, fs2).
• Proficiency with SQL databases, especially PostgreSQL.
• Understanding of distributed systems, data flow, and high-performance architectures.
• Curiosity, willingness to learn, and openness to feedback — we value engineers who grow together with the team.

Nice to Have

• Experience with container technologies such as Docker or Kubernetes.
• Familiarity with Kafka or other messaging systems.
• Interest in exploring other languages or stacks (Python, TypeScript, UI/UX tools).