We are seeking a skilled Custom Software Engineer to develop and enhance custom software solutions. This role involves designing, coding, and improving components across various systems and applications, utilizing modern frameworks and agile methodologies to deliver scalable, high-performing solutions tailored to specific business needs. The position focuses on building robust back-end website architecture, CMS functionality, integrations, APIs, and data structures for global marketing platforms.

Key responsibilities include developing and maintaining back-end website functionality, CMS content models, schemas, integrations, and APIs within a headless architecture like Sanity CMS. You will build scalable content models, manage schemas, workflows, and permissions, and partner with front-end developers to ensure seamless integration. This role supports marketing technology integrations, SEO/AEO/GEO requirements, and prepares the platform for AI-forward digital experiences. Ensuring security, performance, reliability, scalability, and code quality are paramount. You will participate in QA, UAT, troubleshooting, and release processes, documenting configurations and standards to enable team scaling. Working within Git, CI/CD pipelines, and agile workflows is essential.

Candidates should possess a minimum of 5 years of professional web development experience, with at least 2 years specifically in Sanity CMS or a comparable headless CMS. Strong expertise in back-end web development, headless CMS implementation, and modern web platform architecture is required. Proficiency in JavaScript/TypeScript and Node.js (3+ years in production), along with experience in React and Next.js for server-side logic and data fetching, is essential. A solid understanding of CMS content modeling, structured content, taxonomies, and headless architectures is necessary. Experience with building and consuming RESTful APIs and GraphQL, integrating third-party services, and managing production web application hosting (e.g., Vercel, Netlify) is also crucial. Familiarity with SEO, schema markup, performance optimization, and accessibility is expected. Experience with B2B, SaaS, or global marketing websites is required. A minimum of 15 years of full-time education is a qualification.