Top Software Engineer Jobs in Barcelona

Design, develop, and maintain high-quality web applications using CodeIgniter and PHP. Collaborate with cross-functional teams to define and ship features, ensure application performance and quality, identify and fix bugs, and maintain code quality and automation.

Design, build, and scale Grafana Cloud observability integrations and middleware. Implement SDKs and libraries, collaborate with product and open-source communities, operate services (on-call), drive features from ideation to production, and contribute to documentation and customer-facing efforts.

Develop and improve algorithms for automated treatment-planning software using modern C++ (C++17+). Work in an agile team, engage with clinical experts and product owners, design and implement complex algorithms, create prototypes, participate in architecture and code reviews, write tests and technical documentation, follow medical-device regulatory guidelines, mentor peers, and support production monitoring and maintenance.

Lead full‑stack development for Invisalign Palatal Expander treatment planning software. Design, implement, test, and maintain frontend and backend systems, CI/CD pipelines, and AWS infrastructure. Collaborate with multidisciplinary teams, follow medical device regulatory quality standards, write unit/integration tests in TypeScript, and support on‑call rotations.

Build and ship browser-based 3D interactive features using React, Three.js, and WebGL; integrate frontend with a C++ computational backend on AWS; use AI tools (Claude Code) to accelerate development; prototype AI-powered product features; and collaborate with clinical scientists, UX, ML engineers, and QA.

Develop, test, and deliver C++ features for a Windows-based 3D CAD system and supporting cloud services. Implement and prototype functionality, improve algorithms for performance, write unit tests, participate in code reviews, and collaborate with QA, product, and cross-functional teams to clarify requirements and ensure high-quality releases.

Design, implement, and optimize complex algorithms for automated treatment-planning software using modern C++ (C++17+). Participate in end-to-end development, architecture, prototyping, testing, documentation, and regulatory-compliant medical device software practices. Collaborate with clinicians, product, QA, and mentor engineers while improving reliability, performance, and production monitoring.

Develop and improve algorithms for automated treatment planning software for Invisalign. Participate in end-to-end development, design, prototyping, code reviews, testing, documentation, and production support. Collaborate with clinical experts and product teams, implement complex algorithms in modern C++17 with full test coverage, follow medical-device regulatory and quality guidelines, mentor other developers, and drive performance, reliability, and architectural improvements.

Lead end-to-end delivery of customer-facing features, designing and implementing 3D geometric and numerical algorithms in C++, contributing to Go backend services, leading architecture decisions, mentoring engineers, collaborating with QA/SQA, and maintaining regulatory traceability for medical software.

Lead design and execution of test plans for 3D CAD applications, APIs and AI features. Develop and maintain Python-based automated tests, manage datasets for AI, validate AI algorithms, set up CI, perform non-functional testing, analyze results, and collaborate with cross-functional teams to ensure production-ready releases.

Lead end-to-end design and delivery of customer-facing features in C++ and Go, implementing high-performance 3D geometry and numerical algorithms, owning architecture and technical decisions, mentoring engineers, coordinating cross-team dependencies, ensuring testability and regulatory traceability for medical software.

Develop and modernize clinical research software using C++ and Go; maintain legacy code, implement unit/integration tests, ensure regulatory compliance, collaborate with cross-functional teams, and use AWS, Kubernetes, Docker, and CI/CD in an Agile/Scrum environment.

Design and build responsive, high-performance frontend applications with React/Angular while contributing to backend services in Java/Spring Boot. Lead frontend architecture, optimize performance and accessibility, mentor engineers, collaborate across teams, and support CI/CD and cloud deployments for scalable, user-centric products.

The Senior Back-End Software Engineer will design and implement a serverless platform, work closely with the product team, and own entire projects, driving innovation in telehealth.

As a Senior Front-End Software Engineer, you'll design and implement services, contributing to the architecture and product strategy in a fast-paced environment.

As a Back-End Software Engineer, you'll design, implement, and scale a serverless telehealth platform using various technologies while working closely with the product team.

The role involves designing, building, and implementing new services, working closely with the product team, and taking ownership of projects from 0 to 1.

As a Fullstack Software Engineer, you will develop systems for healthcare claims management, ensuring a user-friendly experience and handling large-scale complex applications.

The Lead Software Engineer will design and build full-stack applications, mentor engineers, ensure performance and security, and lead initiatives to optimize development workflows. They will collaborate with cross-functional teams to align technical direction with business goals and oversee adherence to engineering best practices.

The Senior Software Engineer will develop core business products, ensuring performance and scalability, and automate development processes while collaborating with stakeholders.

As a Senior Software Engineer, you will build scalable distributed systems, improve developer experience, mentor peers, and lead incident responses.

The role involves designing and building core gaming infrastructure in Go, developing integral systems for gameplay, and ensuring compliance with determinate and auditable practices for a real-money gaming platform.

The SDET will ensure quality for cybersecurity features by designing test strategies, building frameworks, and conducting various tests within a remote team setting.

Design, implement, and own end-to-end backend features in a Python-based, event-driven platform. Improve architecture for performance, reliability, and scalability, participate in design reviews, mentor peers, ensure CI/CD and testing best practices, and collaborate with Product and Data teams to deliver production-ready services.

Build and maintain Finance & Compliance services to calculate revenue, invoice partners and customers, automate tax reporting, and ensure scalable, reliable transaction processing. Design end-to-end features, participate in architecture, improve observability and performance, and mentor teammates while owning core components.