Senior Backend Software Engineer – AI

Senior Backend Software Engineer – AILocation: San Francisco, CAWork Arrangement: On-site, 5 days/week

Employment Type: Full-timeCompensation: $225,000–$275,000 + potential flexibility based on experienceOur client is hiring a Senior Backend Software Engineer for a fast-growing AI company building next-generation AI-powered products.

This is an opportunity to work on complex backend systems and help shape highly technical products in a fast-moving environment.What You’ll DoDesign and build scalable backend systems, including distributed systems, data processing, information retrieval, and asynchronous workflows.Develop infrastructure for agentic workflows and AI-powered applications.Build reliable APIs and backend services using TypeScript and AWS.Work with technologies such as S3, Lambda, RDS, SQS, ECS, FastAPI, Docker, and CI/CD.Make architectural decisions around scalability, reliability, performance, and observability.Collaborate with engineering and cross-functional teams to deliver new product capabilities.Write high-quality, maintainable code and contribute to engineering standards and best practices.Take ownership of projects and operate effectively in a fast-paced startup environment.Help define technical direction and mentor or guide other engineers when appropriate.What They are Looking For5–10 years of professional backend software engineering experience.Strong industry experience with TypeScript and AWS.Proven experience designing and building scalable backend systems.At least 12 months of professional experience working with agentic systems, LLMs, or generative AI.Experience working in an early-stage or high-growth technology company.Strong understanding of software architecture, algorithms, data structures, and system design.Clear written and verbal communication skills in English.Ability to work independently, take ownership, and make sound technical decisions.A formal degree in a relevant field or equivalent qualifying academic background.Nice to HaveExperience serving as a technical lead or helping establish engineering standards.Experience with AI infrastructure, agentic workflows, or large-scale data processing.Experience working on highly distributed or real-time systems.Work LocationThis role is on-site five days per week in San Francisco, CA. Candidates must be able to work from the San Francisco office on a full-time basis.