Top Software Engineer Jobs in Madrid

As a Software Engineer I specializing in Backend development, you will help build and maintain systems for scheduling repayments, ensuring reliable performance and contributing to team goals through collaboration and code quality.

Build and maintain payroll integrations by reverse engineering web and mobile apps. Improve shared libraries and frameworks, collaborate with product and data teams, and own end-to-end integration solutions that power the real-time income data platform.

The Software Engineer will join a product squad to develop and maintain functionalities on the 360Learning platform, focusing on JavaScript technologies and clean architecture.

As a Software Engineer I, you will design and develop backend systems for Affirm's servicing platforms, ensuring operational excellence and collaborating with various teams while meeting project goals.

The role involves developing GPU Monitoring features and maintaining eBPF functionality, debugging production issues, and contributing to product architecture in Datadog's Agent over various Linux environments.

As a Staff Software Engineer, you'll shape technical strategy, build integrations and services, lead operational processes, and mentor your team, ensuring high-quality code and fostering collaboration across teams.

As a Staff Full Stack Software Engineer, you'll guide technical strategy, mentor engineers, and ensure quality in full stack development while collaborating across teams.

The Senior AI & Computer Vision Software Engineer will work on innovative software solutions, bridge research and production, and mentor others while working in an Agile environment.

The Fullstack Software Engineer will design and build the core billing platform, handling payments and transactions while ensuring system scalability and reliability.

As a Fullstack Software Engineer, you will develop the core billing engine, ensuring accurate transaction processing, integrating with systems and platforms, and collaborating with teams to maintain a unified platform experience.

As a Fullstack Software Engineer, you'll engineer systems for payroll and benefits, automate workflows, and collaborate with HR teams to improve user experience. You will work with modern technologies to simplify complex business processes.

The Senior Cloud Software Engineer will lead the design and implementation of scalable cloud infrastructure, ensure service reliability, and mentor junior engineers while collaborating on cross-functional projects.

Lead the Developer Experience team to build internal tools, CI/CD and GitOps workflows, and AI-assisted developer tooling. Improve provisioning, deployment, and environment setup, reduce operational toil, partner with Platform/SRE/Security/FinOps, and measure impact of tooling.

Develop high‑traffic web applications and self‑serve conversion flows (discovery → quote → signup), build and optimize alan.com and marketing acquisition systems, collaborate with Marketing/Sales/Product/Data/Design, and deliver measurable improvements that drive member acquisition and revenue using the company stack.

As a Senior iOS Developer, you'll develop and maintain iOS applications, implement best practices, collaborate with cross-functional teams, and oversee app performance.

Implement and optimize EVM-compatible features, reduce gas usage, develop and test smart contracts, collaborate on Ethereum infrastructure, and provide technical support.

Develop and optimize Soroban smart contracts and integrate anchor services on the Stellar network for cross-border payment solutions. Collaborate with cross-functional teams, test and debug smart contracts, document development processes, provide technical support, and stay current with blockchain and payments technology trends to ensure secure and efficient implementations.

Build and maintain high-security mobile wallet apps using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams, debug performance issues, and propose UX and security improvements.

Dragonfly is seeking Software Engineers for various portfolio companies, focusing on crypto technologies. Engineers of all experience levels are needed across multiple stacks.

Seeking software engineers with at least 2 years of production backend experience, interested in crypto and blockchain technologies, for roles with portfolio companies.

The Software Engineer role involves developing high-quality web and mobile applications, collaborating with cross-functional teams, and ensuring core engineering practices while maintaining a strong user focus.

Develop and maintain backend services and platforms for Wi‑Fi network design and optimization. Contribute to architecture, implement scalable microservices on AWS, work with device data and APIs, debug production issues, collaborate with cross-functional teams, and mentor junior engineers.

Design, build, and operate agentic AI systems and evaluation frameworks from prototype to production. Own AI features with focus on observability, cost, reliability, and failure recovery. Collaborate with product and domain teams to identify high-impact AI use cases and create org-wide patterns, tooling, and standards. Manage operational economics of AI systems and ensure scalable, serverless deployments.

Build backend services and APIs to manage lifecycle of Qdrant Cloud clusters (provisioning, scaling, upgrades, backups, auth). Collaborate across teams, investigate production issues, and improve reliability, scalability, and usability of the cloud platform.

Develop core backend components for a blockchain network, focusing on networking, reliability, scalability, and high-quality software practices.