Empleos de senior java backend engineer en Barcelona

Factorial is seeking a Senior Software Engineer to join our Data Ops team. You will own the backend architecture of internal sales, invoicing, and billing applications, building resilient, scalable APIs and cloud workflows that power finance and customer experiences.You’ll collaborate with design and product, integrate payment platforms like Stripe or...

Affinity (CRM) in Barcelona is seeking a Senior Software Engineer to join the One Platform team and help drive the technical roadmap and implementation of Internal and External API layers, the 3rd party integration platform, and access management systems.The role is hub‑hybrid, with team members in-office 2 days per week, collaborating across engineering,...

Ersilia is seeking a senior backend engineer to own critical systems and contribute to the roadmap. You will implement code, review it, test rigorously, and ensure reliability, performance, and correctness across production environments.Work autonomously with high ownership, collaborating with engineering and product teams while balancing risk and business...

HireHi in Barcelona is seeking an experienced backend engineer to own end-to-end delivery of product features, from requirements through production, ensuring quality and customer value.You will collaborate with product and technical teams to manage dependencies, mentor junior engineers, and contribute to architecture while raising engineering standards. The...

Cloudbeds, a fully remote-first hospitality platform, is seeking a Senior Backend Engineer to shape scalable backend architecture and deliver high-performance services for customers worldwide. You will work across PHP and Java ecosystems, utilize Laravel/Symfony, MySQL, Docker, Kubernetes, and AWS, and collaborate with global teams to innovate and improve...

Mambu Payments (formerly Numeral) is hiring Senior Backend Software Engineers to help build the next generation of bank connectivity and payment automation products with a focus on security, stability and performance. You will own architectural decisions for high-impact projects, collaborate with Product Managers and Dev Ops, mentor engineers, and contribute...

Affinity (CRM) in Barcelona is seeking a Senior Software Engineer to join the One Platform team and help drive the technical roadmap and implementation of Internal and External API layers, the 3rd party integration platform, and access management systems. The role is hub‑hybrid, with team members in-office 2 days per week, collaborating across engineering,...

Supersonik seeks Senior Engineers to join our core team in Barcelona. You will tackle complex technical problems, shape product architecture from day one, and thrive in a fast-growing startup. You should be fluent in modern Python, async programming, and adept at building scalable, event-driven systems. You’ll work across frontend to infrastructure to...

Bsport is seeking a Senior Backend Engineer to join the Community & Engagement team, building backend systems powering marketing and communications for studios worldwide. You will work on agentic AI initiatives, the marketing suite, and data foundations to enhance scalability and channel integrations. You will design and evolve backend architectures,...

Preply is seeking a Senior Engineer to join the Engineering Team in Barcelona to develop backend features with Python/Django, and to build integrations with third-party vendors for an AI-enabled learning platform. You will collaborate with Product, Design, Data Analytics and Engineering to deliver high-quality features through CI/CD, maintain robust testing,...

Shalion is seeking a Senior Backend Engineer to lead backend initiatives across multiple products and shape the technical roadmap. You will manage one backend engineer from day one and guide the team as it grows, balancing hands-on architecture with leadership responsibilities.The role emphasizes product-focused engineering, AI-enabled automation, and close...

Capitole busca un/a Senior Backend Engineer con amplia experiencia para unirse al equipo en Barcelona. Desarrollarás el backend de la plataforma, creando APIs REST seguras e integraciones con sistemas internos y de terceros. Trabajarás con Node.Js/Type Script, Postgre SQL y Redis, en una arquitectura API-first sobre Azure, con prácticas Dev Ops y...

Neural Trust in Barcelona, Spain, is seeking a Senior Software Engineer to scale our platform and advance AI security technologies. You will contribute to backend systems using Go and Python, own end-to-end initiatives from design to deployment, and collaborate with a talented, multi-skilled team. The role emphasizes building robust, secure, and measurable...

About The CompanyScrambly is one of the fastest-growing adtech startups in the world, featured in the AppsFlyer Performance Index and Singular ROI Index in just 3.5 years. We're growing 250%+ YoY across revenue, team, product, and technology - fully bootstrapped and profitable. We're building the future of app discovery: a reward-powered alternative to the...

Playtomic seeks a Senior Backend Engineer to build robust APIs and scalable services. You will own domain decisions in a pod, collaborating with product and frontend teams to ship secure, high-performance backend systems.Strong Java Spring Boot, API design, and distributed systems experience are essential, with a focus on production health and AI-assisted...

Merlin Digital Partner is seeking a Senior Software Engineer (Python) to design backend systems, cloud infrastructure and APIs powering its connected health technologies. You will work closely with Product, AI, Embedded and Frontend teams to deliver scalable, reliable software across the stack. You will own architectural decisions, build robust APIs,...

M-KOPA is seeking a Senior Backend Engineer to scale M-KOPA Mobility. You will build event-driven C#/.NET microservices powering a growing e-mobility financing platform across Africa. The 12-month Fixed Term Contract can extend or become permanent, with fully remote work across UTC -1 to UTC +3.You will own services end-to-end, collaborate on architecture,...

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Senior Backend Software Engineer – Future Hiring Program based in Spain.Join a forward-thinking engineering team delivering high-impact software solutions for global enterprise clients across diverse industries.As part of a...

Fin Tech Collective, LLC is seeking a Senior Software Engineer for the Core Platform team that runs a real-time payment ledger. You will work on how transfers are accepted, recorded and confirmed, with strong emphasis on correctness under high concurrency. You’ll own design, write tests, review code, profile performance, and lead cross-team initiatives...

Company: B. Braun Medical, S.A. U. Job Posting Location: Barcelona, Barcelona, Spain Functional Area: Information Technology Working Model: Hybrid Requisition ID: 13544Senior ERP Backend Engineer - Microsoft Dynamics 365 Finance & Supply Chain Management / ERP Platform1. Role PurposeThe Senior ERP Backend Engineer will design, build, extend, integrate, and...