Senior Rust Engineer

Appodeal is a dynamic US-based product company with a truly global presence.We have offices in Warsaw, Barcelona and Parkland (FL), 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:Help people discover and grow their talents through products that enable successful mobile app businesses.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 AppodealAppodeal is a dynamic US-based product company with a truly global presence.We have offices in Warsaw, Barcelona, and Parkland (FL), 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:Help people discover and grow their talents through products that enable successful mobile app businesses.We take pride in our cutting-edge product and our internationally distributed team of talented professionals.Here’s what we value:Continuous Learning and Growth - We invest in development and long-term careersMaking an Impact - We are building a history-defining company in the mobile industrySolving Exciting Challenges - Complex, large-scale problems are part of our daily workEnjoying the Journey - We believe great results come with a positive environmentAbout the RoleWe are looking for a Senior Rust Engineer to join our Barcelona team and contribute to building high-performance, real-time systems powering our ML-driven AdTech platform (Mobile Growth Platform.)In this role, you will work on core backend infrastructure and ML platform components, focusing on low-latency, high-load services that process large-scale traffic in real time.You will play a key role in developing and optimizing systems such as real-time applications, feature stores, user identity services, and custom inference layers, ensuring scalability, reliability, and performance.ResponsibilitiesContribute to the development of real-time applications and ML platform componentsBuild and maintain high-load, low-latency backend servicesWork on in-house solutions including:Feature storesUser identity servicesCustom inference layerML platform infrastructureOptimize system performance across on-premise Docker & Kubernetes environmentsDesign and implement solutions for traffic scaling and system reliabilityCollaborate with ML, data, and engineering teams to support production ML systemsContinuously improve system architecture, observability, and efficiencyTech StackLanguages: Rust, PythonData & Streaming: Kafka, SQL, Redis, ScyllaDB, Delta Lake, DatabricksInfrastructure: Docker, Kubernetes (on-premise)Tools: GitHubRequirements5+ years of experience in software engineeringStrong proficiency in Rustorproficiency in C/C++/Zig with willingness to transition to RustExperience designing and building high-load, performance-critical systemsSolid understanding of system design, concurrency, and performance optimizationBasic knowledge of machine learning workflows and toolsNice to HaveSystem programming experience (C, C++, Zig)Experience in ML engineering / MLOpsStrong Python skillsFamiliarity with AdTech standards (OpenRTB, MRAID, VAST)Experience with WASM / WASIBackground in distributed systems and real-time processingLocation: Barcelona, Spain (office attendance 4 days per week)What We’re Looking ForAutonomous and self-driven engineer with strong ownership mindsetPassion for engineering excellence, performance, and scalabilityInterest in ML/AI systems and infrastructureAbility to work independently and make informed decisionsStrong collaboration and communication skillsWhy Join Us:Opportunity to work on cutting-edge projects with a global impact in the mobile app industry.A collaborative and inclusive work culture that values innovation and continuous learning.Competitive salary, flexible work arrangements, and a comprehensive benefits package.Professional development opportunities and career growth prospects within a fast-growing company.We appreciate teamwork, critical thinking, independent decision-making, and standing up for one’s viewpoint.We are looking for talented engineers who are willing to grow, improve and share our values!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!#J-*****-Ljbffr

(on-premise)Tools: GitHubRequirements5+ years of experience in software engineeringStrong proficiency in Rustorproficiency in C/C++/Zig with willingness to transition to RustExperience designing and building high-load, performance-critical systemsSolid understanding of system design, concurrency, and performance optimizationBasic knowledge of machine learning workflows and toolsNice to HaveSystem programming experience (C, C++, Zig)Experience in ML engineering / MLOpsStrong Python skillsFamiliarity with AdTech standards (OpenRTB, MRAID, VAST)Experience with WASM / WASIBackground in distributed systems and real-time processingLocation: Barcelona, Spain (office attendance 4 days per week)What We’re Looking ForAutonomous and self-driven engineer with strong ownership mindsetPassion for engineering excellence, performance, and scalabilityInterest in ML/AI systems and infrastructureAbility to work independently and make informed decisionsStrong collaboration and communication

skillsWhy Join Us:Opportunity to work on cutting-edge projects with a global impact in the mobile app industry.A collaborative and inclusive work culture that values innovation and continuous learning.Competitive salary, flexible work arrangements, and a comprehensive benefits package.Professional development opportunities and career growth prospects within a fast-growing company.We appreciate teamwork, critical thinking, independent decision-making, and standing up for one’s viewpoint.We are looking for talented engineers who are willing to grow, improve and share our values! 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! #J-*****-Ljbffr

Barcelona, España

Appodeal is a dynamic US-based product company with a truly global presence.We have offices in Warsaw, Barcelona and Parkland (FL), 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:Help people discover and grow their talents through products that enable successful mobile app businesses.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 AppodealAppodeal is a dynamic US-based product company with a truly global presence.We have offices in Warsaw, Barcelona, and Parkland (FL), 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:Help people discover and grow their talents through products that enable successful mobile app businesses.We take pride in our cutting-edge product and our internationally distributed team of talented professionals.Here’s what we value:Continuous Learning and Growth - We invest in development and long-term careersMaking an Impact - We are building a history-defining company in the mobile industrySolving Exciting Challenges - Complex, large-scale problems are part of our daily workEnjoying the Journey - We believe great results come with a positive environmentAbout the RoleWe are looking for a Senior Rust Engineer to join our Barcelona team and contribute to building high-performance, real-time systems powering our ML-driven AdTech platform (Mobile Growth Platform.)In this role, you will work on core backend infrastructure and ML platform components, focusing on low-latency, high-load services