Senior Full-Stack Engineer

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.

As a Senior Full-Stack Engineer at Appgrowth, you'll be instrumental in building and scaling our Demand Side Platform (DSP) runtime infrastructure. You'll work on both the performance-critical backend systems and modern frontend interfaces that power our advertising technology platform.

What you'll be doing :

Build and optimize high-performance DSP runtime systems handling real-time bid processing

Develop responsive frontend applications for campaign management and analytics dashboards

Architect and implement APIs connecting frontend interfaces with backend services

Work on performance-critical components requiring low-latency, high-throughput processing

Collaborate on system architecture decisions as we evolve our technology stack

Integrate with external ad exchanges and demand sources

Maintain and improve our existing Python-based UI

What we expect from you : 5+ years of full-stack development experience with strong frontend capabilities

Backend versatility : Experience with Python plus interest / experience in Rust or JVM languages (Java, Scala, Kotlin, Clojure)

Database expertise : Strong SQL skills with PostgreSQL, ClickHouse, or similar analytical databases

API development : Experience with high-performance HTTP frameworks (FastAPI, Flask, or equivalent in other languages)

Real-time systems : Experience with Kafka, Redis, or similar messaging / caching technologies

DevOps familiarity : Docker, Docker Compose, and CI / CD practices

Performance mindset : Understanding of optimization techniques for both frontend and backend

Communication : Strong English skills for cross-team collaboration

Experience with ad tech, RTB, or programmatic advertising

Knowledge of functional programming concepts

Experience with time-series databases or analytics platforms

Understanding of microservices architecture

Why Appgrowth?

We're a product-led company operating at the cutting edge of mobile growth and programmatic media. Here's why people love working with us :

• Work with a world-class team of DSP and mobile marketing experts;
• Accelerated career growth and high ownership from day one;
• Fully remote culture with flexible work hours;

Transparent environment with a strong focus on innovation and impact

Apply now and become part of our team in Barcelona!

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!

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