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.

Why Appodeal?

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
• Advanced frontend skills: 4+ years with React, modern JavaScript/TypeScript, and responsive design
• 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 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

Bonus points:

• • 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!