• Perform development work as part of the client’s software engineering teams • Support the client’s developers in daily tasks and project work • Provide assistance to the client’s customers during US working hours • Monitor and resolve critical issues that arise outside of standard European hours • Participate in regular team meetings and virtual team events • Integrate with the client’s wider developer community • Contribute to the ongoing development of the client’s SaaS solution, including: • Integrating with customer ERP systems to retrieve data • Analyzing data and delivering insights back to customers • Building and maintaining features within the SaaS application

We are seeking a Senior Backend Developer who is AI‑first in mindset and practice. This role is designed for an individual contributor who thrives on building scalable backend systems while leveraging modern AI coding assistants (Copilot, ChatGPT Codex, Claude Code, etc.) to accelerate development and innovation. You will be part of a forward‑thinking engineering team that embraces AI‑native workflows, ensuring faster delivery, higher code quality, and smarter problem‑solving. Key Responsibilities - Design, develop, and maintain backend services using C# and .NET Core. - Design / Architect and implement microservices that are secure, scalable, and resilient. - Work with RDBMS (preferably PostgreSQL or SQL Server) to design efficient schemas, queries, and stored procedures. - Collaborate with cross‑functional teams, demonstrating exceptional communication skills to translate technical concepts into actionable insights. - Utilize AI coding assistants (Copilot, ChatGPT Codex, Claude Code) to enhance productivity, code reviews, and solution design. - Manage source control and CI/CD pipelines with GitHub. - Track and manage tasks effectively using Jira. - Develop and debug applications in Visual Studio / Visual Studio Code. - Deploy, monitor, and optimize services on AWS cloud infrastructure. Required Skills & Experience - Strong expertise in backend development with C# and .NET Core. - Proven experience designing and deploying microservices architectures. - Hands‑on experience with SQL Server or PostgreSQL. - Familiarity with cloud platforms (AWS preferred) for deployment and scaling. - Proficiency with GitHub for version control and Jira for project tracking. - Comfortable working in Visual Studio / VS Code environments. - Demonstrated ability to leverage AI coding assistants to accelerate development. - Excellent communication skills with the ability to work independently and collaboratively. - 6+ years of professional software development experience, with at least 2 years in a senior role. - Collaborate with front-end developers, product owners, and other stakeholders to deliver features. - Write unit, integration, and end-to-end tests to ensure code quality. Preferred Qualifications - Experience in AI‑native development workflows (prompt engineering, AI‑assisted debugging, automated documentation). - Exposure to DevOps practices and CI/CD pipelines. - Strong problem‑solving mindset with a passion for innovation. - Ability to influence technical direction and champion AI‑first engineering culture. What We Offer - Opportunity to shape the future of AI‑native backend engineering. - Collaborative environment that values innovation and continuous learning. - Cutting‑edge projects leveraging AI tools to redefine software development. - Competitive compensation and growth opportunities.

• Desarrollar y mantener código de alta calidad, incluyendo revisiones de PRs y documentación precisa de las funcionalidades implementadas. • Participar activamente en ceremonias ágiles (daily, planning, sprint review, retrospectiva y refinamiento) para garantizar la colaboración y el avance del desarrollo. • Gestionar y resolver incidencias técnicas, además de realizar pruebas unitarias e integraciones para garantizar el buen funcionamiento del software. • Colaborar en el diseño de la arquitectura del equipo e identificar oportunidades de optimización en los sistemas existentes. • Documentar las soluciones implementadas, asegurando claridad y accesibilidad para el equipo.

Mathspace is on a mission to change maths education, by helping students and teachers with smarter, interactive learning software. We’re an agile run, product-orientated company that focuses on delivering value through continual customer feedback, enabling students and teachers to have a delightful experience through learning mathematics. As an engineer working on a cross-functional product team, you will: - Enrich the Mathspace web and mobile apps that help teach hundreds of thousands of students every month across the world - Work closely with product owners and designers in their product discovery efforts - Collaborate with fellow engineers to deliver meaningful value to students and teachers - Tackle difficult problems, solve them creatively, and learn continuously - Play an active role, taking the initiative to get things done - Learn, develop and extend our tech stack