Empleos de backend engineer experiments platform en Madrid

Constructor.Io is seeking a backend engineer focused on Python services to own production backend systems for experiments, with occasional UI work. You’ll contribute to scalable reporting pipelines, improve reliability, and collaborate with Search/Recommendations teams on data-heavy workloads.The role emphasizes correctness, observability, and product...

Who we are:At Rover, pets and their people are at the heart of everything we do. We connect pet parents with trusted pet care across the U.S., Canada, Europe, and Australia.Headquartered in Seattle and Barcelona, we’re a values driven, fast-growing tech company focused on building safe and personalized experiences tailored to the needs of each unique pet....

Constructor.io is a distributed team hiring a backend-focused engineer for its Experiments platform. You’ll build Python services and data-heavy pipelines, with opportunities to contribute to the Dash UI and Spark/Databricks work, while prioritizing correctness and observability. You’ll own backend components for experiment assignment, logging, and...

Ebury seeks Senior Staff/Lead Backend Engineers to join the Client Ops team in Málaga or Madrid. You will design and operate reusable backend services in Python or TypeScript, own data contracts, and drive migrations away from Salesforce.You will contribute across end-to-end delivery, tackle complex domain logic, and push for scalable, cloud-native...

Proton Technologies AG is hiring for a backend-focused role in our Payments team. You will build features across Proton products, work closely with product engineers, and shape scalable software architectures that power a global subscription ecosystem. A strong emphasis is placed on performance, security, and high-quality API design to enhance user...

Allianz Partners is seeking a Senior Backend Engineer (m/f/d) to join the Advanced Analytics (DA3) team within the Chief Data & AI Office. You will design, build, and operate cloud-native backend services and REST APIs powering AI-enabled solutions, collaborating with ML, Platform, AI Architects, and DevOps across global teams.You’ll implement...

Swiss Re in Spain seeks a Senior Backend Engineer to design and deliver reliable backend services, APIs, and automation across platforms and languages. You will contribute to AI agents and intelligent automation, mentor peers, and help drive engineering resilience. You will work across enterprise data and databases, apply strong design and testing practices,...

ERNI - Swiss Software Engineering in Barcelona region is seeking a backend developer to design, build and maintain cloud-based identity services with .NET 6+ on Microsoft Azure. You will contribute to secure, scalable backend systems and participate in CI/CD, cloud-native practices and DevOps workflows.The role emphasizes collaboration, ongoing learning, and...

Plenit is seeking a Mid-Level Software Engineer (Go) to help build and scale the server-side layer of our cloud platform. You will design, implement, and operate backend services and APIs, focusing on performance, reliability, and maintainability.You will join a multidisciplinary team, work on distributed systems, asynchronous workflows, and data models, and...

OLX is building a GenAI platform in Spain and seeks a mid-level Backend Engineer to help design, develop, and scale cloud-native services using Python/JVM languages in a microservices environment. The team operates on Kubernetes in AWS, with CI/CD pipelines managed through GitLab.You will contribute to strategic projects, mentor junior engineers, and...

T-Systems Iberia sucht eine/n Senior Backend Engineer mit Schwerpunkt System-Design und dem Aufbau produktiver Backend-Plattform-Services hinter AI-Inference-Endpunkten. Du treibst Architekturentscheidungen, entwickelst hochverfügbare, sichere Systeme, und arbeitest eng mit KI‑Infrastruktur- und Data‑Engineering-Teams zusammen.Du bringst umfangreiche...

Senior Software Engineer (Backend) ABOUT LINGO Lingo is building a cutting‑edge digital health platform that fuses continuous biosensor data, high‑performance backend engineering, and advanced analytics to help people live healthier, longer, fuller lives. Our systems process massive volumes of real‑time data, and the backend is the heartbeat that...

TEAM International Services is seeking an experienced Senior Backend / Platform Engineer to design and develop scalable backend APIs and secure microservices for enterprise AI platforms. You will work on real-time AI model hosting, RBAC, and integration with databases, APIs, and cloud infrastructure.Required: strong backend experience with Python and...

Senior Backend Engineer to design, develop, and scale AI-enabled backend services, focusing on DevOps, Clean Code, and DDD. The role involves collaboration, mentoring, and ensuring secure, scalable architectures.

Xe.Com is hiring a senior back-end engineer to own end-to-end problems, from API design and data modeling to service implementation and production reliability. You will design backend services that move money, build scalable multi-currency platforms, and lead cross-functional delivery with product, compliance, and operations.You will mentor mid-level...

Dow Jones in Spain (Catalonia) seeks a Senior Software Engineer to design, build, and operate reliable backend services and APIs powering product experiences and internal tools. You will lead complex features, improve performance and observability, and collaborate with cross-functional teams.You will work with Java, Spring Boot, and Python; AWS, Linux,...

TEAM International Services in Spain is seeking a Backend Engineer to join our banking platform team. You will build production-grade backend services in C# / .NET, focusing on correctness, reliability, auditability, and maintainability. The role involves designing APIs, working with SQL databases, applying clean architecture, and writing unit and...

Swiss Re in Spain seeks a Senior Backend Engineer to design and deliver reliable backend services, APIs, and automation across platforms and languages. You will contribute to AI agents and intelligent automation, mentor peers, and help drive engineering resilience. You will work across enterprise data and databases, apply strong design and testing practices,...

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Full-Stack Engineer (Backend Leaning) – Platform Engineering based in Spain.As a Full-Stack Engineer with a strong backend focus, you will help build the foundational systems that power a suite of innovative AI products used...

Aircall, a unicorn AI-powered customer communications platform, is hiring a Senior Backend Engineer in Madrid. You will design, build, test, and deploy backend systems using TypeScript/Node.js with a strong emphasis on security, scalability, and performance.Collaborate with product managers, designers, and engineers to deliver end-to-end solutions, mentor...