Senior Software Engineer, Backend

Senior Software Engineer, Backend (Infrastructure)Recruiting from Scratch is a premier talent firm that focuses on placing the best product managers, software, and hardware talent at innovative companies. Our team is 100% remote and we work with teams across the United States to help them hire.Location: San Francisco, CA (FiDi) Company Stage of Funding: Early-stage (recently raised ~$30M+, Series A upcoming) Office Type: On-site (5 days/week) Salary: $250,000 – $300,000 + Competitive Equity + Bonus (profit share)Company DescriptionOur client is a rapidly growing AI infrastructure company building the backbone for next-generation agentic systems and data workflows. They are working at the frontier of AI by enabling large-scale data generation, evaluation pipelines, and human-in-the-loop systems that power advanced machine learning models.The company is already generating significant revenue with strong growth and is collaborating with leading AI labs and high-growth startups. With a highly technical and talent-dense team, they are tackling some of the most complex infrastructure challenges in AI today.Operating across domains like healthcare and finance, they are building scalable systems to support massive data throughput and real-time processing—positioning themselves as a key infrastructure layer in the evolving AI ecosystem.What You Will DoDesign and build core infrastructure powering data generation, evaluation pipelines, and AI systemsOwn scalability, reliability, and performance of foundational backend systemsArchitect distributed systems to handle high-throughput, large-scale datasetsCollaborate with product and vertical engineering teams to enable rapid developmentEstablish best practices for system design, observability, and deploymentImprove infrastructure for real-time and batch processing workloadsMentor junior engineers and contribute to a high-performance engineering cultureWork across the stack when needed (backend-heavy with some full-stack exposure)Take ownership of critical systems from design through productionIdeal Candidate Background5–8 years of software engineering experienceStrong backend and infrastructure experience (distributed systems, scalability, reliability)Experience building and operating production systems in cloud environments (AWS or GCP)Proficiency in languages such as Python or Node.jsExperience with modern infrastructure tools (Kubernetes, Kafka, Redis, etc.)Strong understanding of system design, data architecture, and high-throughput systemsExperience working in startup or high-growth environmentsAbility to operate independently and take ownership of critical systemsCompensation and BenefitsCompetitive base salary: $250,000 – $300,000Competitive equity packagePerformance-based bonus (profit share upside)Opportunity to work on cutting-edge AI infrastructureHigh ownership and impact as an early engineering hireWork alongside a highly technical and talent-dense teamFast-growing company with strong revenue tractionWhy JoinThis is a rare opportunity to work on the foundational infrastructure powering the next generation of AI systems. You'll tackle deeply technical challenges around scalability, distributed systems, and real-time data processing—at a company already operating at meaningful scale.If you're an engineer who enjoys building core systems, solving hard infrastructure problems, and operating in a high-performance startup environment, this role offers significant ownership, technical depth, and upside.