Senior Rust Engineer

About the Role We are looking for aSenior Rust Engineerto 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 oncore backend infrastructure and ML platform components , focusing onlow-latency, high-load servicesthat process large-scale traffic in real time.You will play a key role in developing and optimizing systems such asreal-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 efficiencyLanguages: Rust, PythonTools: GitHubRequirements5+ years of experience in software engineeringStrong proficiency in Rust or proficiency 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 / MLOpsFamiliarity 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 UsOpportunity 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

5+ years of experience in software engineering Strong proficiency in Rust or proficiency in C/C++/Zig with willingness to transition to Rust Experience designing and building high-load, performance-critical systems Solid understanding of system design, concurrency, and performance optimization Basic knowledge of machine learning workflows and tools Nice to Have System programming experience (C, C++, Zig) Experience in ML engineering / MLOps Familiarity with AdTech standards (OpenRTB, MRAID, VAST) Experience with WASM / WASI Background in distributed systems and real-time processing Location: Barcelona, Spain (office attendance 4 days per week) What We’re Looking For Autonomous and self-driven engineer with strong ownership mindset Passion for engineering excellence, performance, and scalability Interest in ML/AI systems and infrastructure Ability to work independently and make informed decisions Strong collaboration and communication skills

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