Full-Stack Engineer

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 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 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

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, 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