ppWe’re hiring bFullstack engineer /b with a product mindset who loves building scalable systems and polished user experiences. /p pWe’re creating a platform where customers can manage subscriptions, billing, invoices, payment methods, and usage insights through seamless self‑service experiences built on a modular, scalable architecture with best‑in‑class service design. /p h3What’s the mission? /h3 ul liFactorial is building a world‑class platform to support customers and partners interact with our products, manage their accounts, and grow with us. /li liAs a Fullstack engineer in the Portals team, you’ll build and evolve customer facing portals that enable secure, intuitive, and scalable self‑service experiences. /li liYou’ll design and integrate systems that connect internal platforms—billing, CRM, product services, and support—with external users, ensuring reliable access to key workflows across the customer lifecycle. /li liYour work will directly impact how customers and partners interact with Factorial, improving transparency, reducing operational friction, and enabling scalable growth through self‑service. /li /ul h3The role /h3 ul liYou’ll be part of a fast‑growing Engineering team of 250+ product developers, building high‑impact experiences that directly affect customer satisfaction, partner collaboration, and operational efficiency. /li liYou will design and develop customer‑facing portals, enabling users to manage subscriptions, access services, review account information, and interact with Factorial’s platform. /li liYou’ll collaborate closely with Product, Design, Finance, Sales, and Support teams to translate business needs into intuitive, scalable, and secure user experiences. /li liYou’ll build robust backend services and APIs that power portal workflows while maintaining clean integrations with internal systems such as CRM, billing, and product platforms. /li liYou’ll take ownership of features end‑to‑end—from architecture and implementation to production monitoring, performance optimization, and continuous improvement. /li /ul h3Our stack the day‑to‑day /h3 ul liWe standarize on Ruby on Rails and React / React Native, but we don’t box ourselves in. We’re open to engineers with strong fundamentals in related stacks, and we genuinely explore alternative technologies when they bring real value to our problems.



/li liYou’ll build secure APIs and services that enable customers and partners to interact with internal systems through the portals. /li liYou’ll design scalable and intuitive user experiences, working closely with Product and Design to ensure portals are simple, reliable, and performant. /li liYou’ll integrate external and internal systems such as billing providers, CRM platforms, authentication services, and product APIs. /li liYou’ll implement monitoring, observability, and performance improvements to ensure reliability and a seamless user experience. /li liYou’ll contribute to architectural decisions, write technical proposals (RFCs), and collaborate with other engineers to improve the platform over time. /li liYou’ll work in short development cycles, testing quickly and iterating under a GitOps‑driven mindset with CI/CD best practices. /li /ul h3Your first steps at Factorial /h3 ul liRead a lot: Get familiar with Factorial’s products, customers, and current customer lifecycle workflows. /li liLearn a lot: Pair with engineers, product managers, and designers to understand how customers and partners interact with Factorial today and where portals can improve the experience. /li liBuild a lot: Contribute to improvements in portal features, integrations, and internal tooling that power customer‑facing experiences. /li liImprove a lot: Identify usability, performance, or reliability improvements that make the portal experience smoother for external users. /li liTalk a lot: Work closely with cross‑functional teams to ensure what we build solves real customer problems. /li /ul h3What we’d love to see in your background /h3 ul li5+ years of experience as a Software Engineer working on backend systems or full‑stack product development. /li liExperience building customer‑facing platforms, or SaaS applications with strong attention to usability and reliability. /li liSolid experience designing and maintaining production‑grade APIs and backend services. /li liExperience working with modern frontend frameworks such as React or similar technologies.



/li liExperience integrating multiple systems and services (internal platforms, third‑party APIs, authentication systems, etc.). /li liStrong ownership mindset and ability to deliver features end‑to‑end—from design to production. /li liClear communication skills and ability to collaborate with Product, Design, and non‑technical stakeholders. /li liComfortable working in English and collaborating with distributed teams. /li /ul h3The hiring process /h3 ul liFirst conversation with an Engineering Manager: a mix of human and technical topics, focused on how we can work together and align expectations. /li liTechnical interview with Factorial engineers, discussing a piece of code you’re proud of or solving a practical challenge. /li liFinal coffee chat with an Engineering or Product leader to discuss Factorial’s vision, culture, and your potential impact. /li liAll interviews are remote via video conferencing tools. /li /ul h3About Us /h3 pAt Factorial, we’re building the leading business management software for companies of all sizes. Our platform centralizes key workflows across HR, finance, and operations, freeing teams from manual processes so they can focus on what really matters: leading, growing, and taking care of their people. With over 1,200 employees across 7 markets, we serve 700,000+ users and are one of Europe’s fastest‑growing SaaS companies, backed by top‑tier investors and proudly headquartered in Barcelona. We believe in bold goals, radical ownership, and inclusive collaboration. If you’re excited to shape the future of business management technology, we’d love to meet you. /p h3Our Values /h3 ul liWe own it: We take responsibility for every project. We make decisions, not excuses. /li liWe learn and teach: We’re dedicated to learning something new every day and, above all, share it. /li liWe partner: Every decision is a team decision. We trust each other. /li liWe grow fast: We act fast. We think that the worst mistake is not learning from them. /li /ul h3Perks of being part of our team /h3 ul liHigh growth, multicultural and friendly environment /li liAlan as private health insurance /li liHealthy life with Wellhub (Gyms, pools, outdoor classes) /li liSave expenses with Cobee /li liLanguage classes /li liBreakfast in the office and organic fruit /li liNora discounts /li liFree caffeine and theine /li liPet Friendly /li /ul /p #J-18808-Ljbffr

📌 Senior Software Engineer - Data (Barcelona)
🏢 Factorial
📍 Barcelona