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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - Finance Services - Factorial Hr - **Company:** Factorial Hr - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Cloud Computing, Cloud Engineering, Databases, Continuous Delivery, Data Integrity, Fault Tolerance, Github, Software Engineering, System Availability, Concurrency, Backend, Stripe, Api Design, Docker - **Published:** September 16, 2026 - **Apply:** https://www.buscojobs.com.es/senior-software-engineer-finance-services-factorial-hr-en-barcelona-ID-372110666 ## About the Role Requisitos principales5+ years of professional backend or software engineering experience Strong foundation in databases, Docker, and modern cloud infrastructure; language-agnostic Proven ability to build reliable, secure, production-ready APIs with concurrency, data integrity, and monitoring Fintech, payments, or financial applications domain knowledge valued Product-first thinking and understanding of business impact Experience using AI assistants and automation tools in daily coding Collaborative with Agile methodologies and cross-functional teams collaboration communication proactive problem-solving backend API design and development cloud infrastructure and deployment database management ## Description OverviewAs a Senior Software Engineer in the Data Ops team, you will own the backend of internal sales, invoicing, and billing applications, delivering resilient, scalable cloud-based systems.You will shape end-to-end backend workflows and integrate global payment platforms to optimize financial flows.You'll work closely with design and product teams, and embed AI into your daily workflow to accelerate development.This role focuses on product-first delivery, system stability, and meaningful impact across internal and external users.Compensaciones / Beneficiosprivate health insuranceWellhubCobeelanguage classesbreakfast in the officeoffice remote flexibility (20%)ResponsabilidadesOwn backend architecture for internal sales, invoicing, and billing apps with high availability, security, and performanceDesign and maintain robust backend workflows for critical financial data with reliability and fault toleranceIntegrate payment platforms and APIs (Stripe, Adyen) to optimize financial flowsDevelop end-to-end products with input from design and product teams for internal and external usersEmbed AI into development workflow using GitHub and modern AI tools to create smart agentsDrive Agile practices: PR reviews, continuous deployment, and collaborative specificationsRequisitos principales5+ years of professional backend or software engineering experienceStrong foundation in databases, Docker, and modern cloud infrastructure; language-agnosticProven ability to build reliable, secure, production-ready APIs with concurrency, data integrity, and monitoringFintech, payments, or financial applications domain knowledge valuedProduct-first thinking and understanding of business impactExperience using AI assistants and automation tools in daily codingCollaborative with Agile methodologies and cross-functional teamscollaborationcommunicationproactive problem-solvingbackend API design and developmentcloud infrastructure and deploymentdatabase management ## Related Videos - [Navigating Growth, Scaling Challenges, and Office Expansions with David Singleton, CTO at Stripe](https://www.wearedevelopers.com/videos/100362-navigating-growth-scaling-challenges-and-office-expansions-with-david-singleton-cto-at-stripe) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [Throwing off the burdens of scale in engineering](https://www.wearedevelopers.com/videos/608-throwing-off-the-burdens-of-scale-in-engineering) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) ## Related Articles - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Highest Paying Tech Companies in Europe](https://www.wearedevelopers.com/magazine/162-highest-paying-tech-companies-in-europe) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)