Backend Engineer, AI Platform

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Backend Engineer, AI Platform based in Spain. Join an AI-focused engineering team building the next generation of intelligent features for a leading SaaS platform. You will turn AI models and raw data into reliable, customer-facing capabilities that create smarter and more personalized experiences. The role centers on backend development in Python, with a strong focus on APIs, services, integrations, and AI orchestration. You will work closely with frontend, product, platform, and integration teams to embed AI seamlessly into existing workflows. Your work will directly influence automation, customer insights, and the way users interact with AI-powered product capabilities. You will also help evolve the technical foundation supporting LLM integrations, observability, and production reliability. This is a fully remote opportunity for an EMEA-based engineer looking to make a meaningful impact at the intersection of backend engineering and AI. Accountabilities

• Design and build backend services that integrate AI capabilities into customer-facing product features.
• Develop performant, scalable APIs and backend services that connect AI outputs with SaaS functionality and customer workflows.
• Collaborate with product and design teams to create intuitive and valuable AI-driven user experiences.
• Partner with platform and integration teams to embed AI capabilities into existing systems, services, and workflows.
• Implement observability, monitoring, error handling, and reliability practices for AI services operating in production.
• Contribute to the evolution of the AI integration stack, including Python SDKs, MCP servers, and LLM orchestration.
• Help ensure AI-powered features are seamlessly integrated into the wider SaaS platform and deliver smarter, faster, and more personalized customer workflows.
• Become a trusted engineering partner for AI product integration across the organization.

• 5+ years of professional backend engineering experience, ideally within a SaaS environment.
• Strong proficiency in Python and experience building production-grade backend services.
• Solid experience working with REST APIs and SaaS integrations.
• Familiarity with modern LLM and AI development tools and frameworks, such as LangChain, Vercel AI SDK, and MCP servers.
• Comfortable working alongside Python-based AI services and bridging different technology stacks.
• Strong understanding of backend architecture, scalable services, API development, and production reliability.
• Strong collaboration and communication skills, with the ability to work effectively across product, platform, frontend, and integration teams.
• Experience with PHP and/or Golang is considered a plus.
• Ability to work effectively in a fully remote, international environment and collaborate with colleagues and internal customers across EMEA.

• Competitive compensation based on market rates in the country of residence.
• 100% remote work, with the freedom to work from anywhere within your country of residence.
• Stock options for every role, providing an opportunity to share in the success of a fast-growing and profitable business.
• A values-driven culture where core values actively guide strategic and day-to-day decisions.
• Strong professional growth opportunities, supported by rapid company growth, learning opportunities, and career advancement possibilities.
• Annual paid leave, with entitlement determined according to country- and contract-specific norms.
• Country-specific benefits, including health insurance and pension benefits where customary, depending on the applicant’s location.
• A diverse and international team spanning more than 40 countries, creating opportunities for global collaboration, learning, and networking.
• A flexible remote environment designed to support collaboration with teammates, peers, and internal customers across EMEA.