Senior Fullstack Software Engineer (AI)

TL;DR

Senior Fullstack Software Engineer (AI): Designing and building core backend systems for dynamic content delivery with an accent on latency, caching, and API design. Focus on implementing deterministic execution pipelines, evolving data models, and ensuring operational reliability in production.

Location: Hybrid in Berlin, Germany

Company

hirify.global is a leading digital experience platform that helps modern businesses meet the growing demand for engaging, personalized content at scale by blending composability with native AI capabilities.

What you will do

• Design and build core backend systems responsible for selecting, composing, and delivering dynamic content under tight latency and caching constraints.
• Implement deterministic, cache-aware execution pipelines with strong performance guarantees.
• Define and evolve APIs, schemas, and versioning strategies with long-term stability in mind.
• Build tooling and simple UIs to manage, preview, debug, and explain system behavior.
• Create demo experiences and reference implementations to dogfood the platform end-to-end.
• Own the system in production, including observability, debugging, and operational reliability.

Requirements

• Extensive experience owning complex, long-lived production systems in TypeScript.
• Strong backend and system design skills, with a focus on correctness and maintainability.
• Experience designing and evolving APIs and data models used by other teams or customers.
• Backend-first mindset, building production-grade UIs and components using modern web technologies (e.g., React) for tools and reference implementations.
• Product mindset with empathy for content practitioners, marketers, and developers.
• Ability to work effectively in ambiguity and make sound architectural tradeoffs.
• Experience with content platforms, personalization, or similar systems.
• Familiarity with declarative systems, data transformation pipelines, and cache-heavy or CDN-backed architectures.

Culture & Benefits

• Opportunity for Stock Options to share in the success of the company.
• Fertility and family building benefits, including a lifetime reimbursable wallet.
• Generous paid time off, including vacation, sick, education, compassion, and volunteer days, valuing work-life balance.
• Annual education budget for skill improvement and career growth.
• Full range of virtual and in-person events for learning and networking.
• Annual wellbeing stipend for physical, financial, or emotional health.
• Monthly communication phone/internet stipend and phone hardware upgrade reimbursement.
• New hire office equipment stipend for hybrid or distributed employees.
• Commitment to an inclusive environment where everyone is welcome.