Staff Software Engineer

Appodeal, Inc.; Barcelona; Presencial; EUR 60.000 - 80.000; Jornada completa

Descripción de la vacante

A leading mobile monetization platform in Barcelona is seeking a Staff Software Engineer to drive the development of mediation backend services. This senior role involves influencing system architecture, tackling complex engineering challenges, and mentoring fellow engineers. Ideal candidates should have over 6 years in backend engineering, with a strong focus on distributed systems and performance optimization. Join to help shape the future of mobile app success within a diverse and innovative team.

Servicios

Continuous learning opportunities

Impactful work environment

Collaborative culture

Formación

• 6+ years of backend engineering experience.
• Strong expertise in developing web services and concurrent systems.
• Deep understanding of distributed systems, microservices, and APIs.

Responsabilidades

• Lead architecture and implementation of complex backend features.
• Design, build, and sustain high-throughput mediation services.
• Mentor mid and senior engineers through code reviews.

Conocimientos

Backend engineering

Web services development

Distributed systems

Microservices

APIs

Problem-solving

Communication

Herramientas

Ruby

Go

Descripción del empleo

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.

Appodeal is a leading mobile monetization platform empowering app developers with best-in-class ad mediation, analytics, and optimization tools. We combine powerful technology with a fair marketplace to maximize revenue and simplify monetization. With teams distributed globally and offices in Spain, Poland, and the USA, we value autonomy, craftsmanship, and meaningful impact.

Role Overview

We’re seeking a Staff Software Engineer to play a key role in developing and scaling Appodeal’s mediation backend services. You’ll be a senior individual contributor who influences system architecture and technical direction, drives complex feature delivery, and mentors engineers across teams. Your work will directly impact the performance and reliability of systems responsible for ad requests, bidding logic, mediation orchestration, reporting, and developer tools.

As a Staff Developer, you’ll own large subsystems, collaborate with cross-functional partners, and help shape the future of our mediation platform.

What You’ll Do

Technical Leadership

• Lead architecture and implementation of complex backend features in Ruby and Go
• Drive critical design decisions with emphasis on performance, scalability, and maintainability
• Partner with engineering leads, product, and platform teams to define technical roadmaps

System Development & Ownership

• Design, build, and sustain high-throughput mediation services handling millions of requests
• Improve and optimize existing services for efficiency, reliability, and observability
• Tackle mission-critical problems in routing, caching, real-time bidding, and API orchestration
• Work closely with backend, data, SDK, and devops teams to ship end-to-end solutions
• Translate product goals into well-structured backend systems
• Advocate for best practices in testing, code quality, and automation
• Mentor mid and senior engineers — support growth through code reviews and design discussions
• Influence engineering culture, standards, and backend patterns across mediation teams

Required Qualifications

• 6+ years of backend engineering experience
• Strong expertise in developing web services and concurrent systems in production
• Deep understanding of distributed systems, microservices, and APIs
• Experience building high-performance, scalable services with low latency
• Excellent problem-solving skills and ability to drive complex technical initiatives end-to-end
• Strong communicator — able to align cross-functional teams on architecture and priorities

Nice-to-Have

• Background in ad tech, ad mediation systems, or real-time bidding platforms
• Experience with Ruby and Go
• Ruby/Go performance profiling and optimization experience

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!