Senior Software Engineer - AI (Materia AI)

Senior Software Engineer – AI (Materia AI) We're building the next generation of AI‑powered platforms for tax and accounting professionals, and we’re looking for a Senior Software Engineer who can architect high‑performance backend systems that bring real‑world AI capabilities to life. If you thrive in fast‑moving environments, enjoy tackling complex distributed‑systems challenges, and want your work to directly enable intelligent, production‑grade features, this role is for you. About the Role As a Senior Software Engineer – AI, you will design, implement, and optimize backend services that fuel AI‑native experiences across our Materia‑driven product ecosystem. You’ll be responsible for shaping the architecture, scalability, and reliability of systems that coordinate LLM interactions, serve high‑traffic APIs, and manage large‑scale content processing. Design and build backend services using Python, FastAPI, and PostgreSQL to support real‑time AI interactions and large‑scale data flows. Shape the architectural foundation of our AI platform by defining service boundaries, system interfaces, and scalable design patterns. Develop high‑performance APIs and microservices that power AI agents, orchestration engines, and content pipelines, ensuring smooth operation under heavy load. Integrate backend systems with modern LLM providers (e.g., OpenAI, Anthropic) and implement reliable orchestration, routing, and execution safeguards. Productionize AI capabilities with robust error handling, guardrails, telemetry, and deep observability for performance and reliability. Lead core engineering decisions—driving architecture reviews, mentoring teammates, and promoting best practices in testing, resiliency, and maintainability. Strengthen CI/CD pipelines and DevOps automation to support fast, stable, cloud‑native development workflows. Collaborate closely with ML engineers, product managers, and designers to turn early AI concepts into scalable backend solutions. Deliver backend systems that transform ambitious AI ideas into production‑ready experiences used by thousands of professionals. About You Required Qualifications Senior experience in backend systems, APIs, and microservices Strong proficiency in Python, FastAPI, PostgreSQL, and AWS cloud services. Deep understanding of distributed systems, architecture, and data modeling. Experience with AI‑driven systems or agent‑based architectures. Proven ability to deliver production‑ready, highly reliable systems. Excellent debugging skills and strong cross‑functional communication. Comfortable operating in fast‑paced, iterative environments. Preferred Skills Curiosity and enthusiasm for integrating AI technologies into real applications. Familiarity with embeddings, vector search, or RAG retrieval patterns. Strong opinions on testing, automation, and operational robustness. Experience with modern LLM APIs or orchestration frameworks. #LI-ED1 O que iremos te oferecer? Modelo de Trabalho Híbrido: Adotamos um ambiente de trabalho híbrido e flexível (2-3 dias por semana no escritório, dependendo do papel) para funções baseadas em escritório, garantindo uma experiência integrada e coerente tanto no âmbito digital quanto presencial. Flexibilidade e Equilíbrio entre Trabalho e Vida Pessoal: Flex My Way consiste em um conjunto de políticas de projetadas para facilitar a gestão das responsabilidades pessoais e profissionais, seja cuidando da família, participando de atividades comunitárias ou dedicando tempo para descanso e renovação pessoal. Essas políticas se baseiam em nossa abordagem flexível de trabalho, permitindo que os funcionários trabalhem de qualquer lugar por até 8 semanas por ano, promovendo assim um equilíbrio ideal entre seus compromissos de trabalho e pessoais. Desenvolvimento e Crescimento Profissional: Promovemos uma cultura de aprendizado contínuo e desenvolvimento de habilidades, preparando nossos talentos para enfrentar os desafios do futuro e oferecer ... (truncated, view full listing at source)