{"schemaVersion":"jobsearcher.job.v1","id":"e33559678987df4d141fe350","url":"https://jobsearcher.com/jobs/e33559678987df4d141fe350","canonicalUrl":"https://jobsearcher.com/jobs/e33559678987df4d141fe350","title":"Backend Engineer","description":"We are hiring on behalf of a venture-backed AI startup building intelligent software that automates complex business workflows. The platform uses large language models, proprietary data, and human-in-the-loop systems to complete work that previously required significant manual effort. Its backend systems power AI agents, customer integrations, data processing, evaluation infrastructure, and production workflows. The company is hiring a Backend Engineer to build the reliable systems behind its AI products. About the role As a Backend Engineer, you will design and build the services, APIs, data models, and infrastructure that power the company?s product. You will work primarily in Python and PostgreSQL while collaborating closely with product engineers, AI engineers, customers, and company leadership. This is not a narrow API-development role. You will work on production architecture, data systems, model integrations, security, reliability, and product capabilities.\r\nWhat you?ll doDesign, build, and maintain production backend services using Python\r\nDevelop APIs that support customer-facing applications and AI workflows\r\nDesign scalable relational data models using PostgreSQL\r\nBuild integrations with model providers, customer systems, and third-party platforms\r\nDevelop systems for asynchronous jobs, event processing, and long-running AI workflows\r\nDeploy and operate services using AWS\r\nDebug production issues across application, data, model, and infrastructure layers\r\nHelp shape backend architecture and engineering practices as the company grows\r\nWhat we?re looking forApproximately 2?9 years of professional software engineering experience\r\nStrong professional experience with Python\r\nExperience designing and operating production APIs or backend services\r\nStrong understanding of relational databases, SQL, and data modeling\r\nExperience with PostgreSQL or a comparable production database\r\nFamiliarity with AWS, GCP, or another major cloud platform\r\nUnderstanding of application security, authentication, and authorization\r\nExperience debugging and operating systems in production\r\nAbility to independently own technical projects from design through deployment\r\nComfort making pragmatic engineering decisions in an early-stage environment\r\nStrong communication and cross-functional collaboration skills\r\nNice to have (not required)Experience building AI, LLM, agent, or machine-learning infrastructure\r\nExperience integrating OpenAI, Anthropic, or other model providers\r\nFamiliarity with LLM evaluation, retrieval, embeddings, or vector databases\r\nExperience with Docker, Kubernetes, Terraform, or CI/CD systems\r\nExperience with Redis, Kafka, queues, or event-driven architectures\r\nExperience building multi-tenant SaaS products\r\nPrevious experience at an early-stage startup\r\nExperience with data-intensive or distributed systems#J-18808-Ljbffr","company":"Pronexus","rawCompany":"pronexus","city":"Millbrae","state":"CA","isRemote":false,"isActive":true,"createdAt":"2026-11-04T05:43:24.943Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Backend Engineer","description":"We are hiring on behalf of a venture-backed AI startup building intelligent software that automates complex business workflows. The platform uses large language models, proprietary data, and human-in-the-loop systems to complete work that previously required significant manual effort. Its backend systems power AI agents, customer integrations, data processing, evaluation infrastructure, and production workflows. The company is hiring a Backend Engineer to build the reliable systems behind its AI products. About the role As a Backend Engineer, you will design and build the services, APIs, data models, and infrastructure that power the company?s product. You will work primarily in Python and PostgreSQL while collaborating closely with product engineers, AI engineers, customers, and company leadership. This is not a narrow API-development role. You will work on production architecture, data systems, model integrations, security, reliability, and product capabilities.\r\nWhat you?ll doDesign, build, and maintain production backend services using Python\r\nDevelop APIs that support customer-facing applications and AI workflows\r\nDesign scalable relational data models using PostgreSQL\r\nBuild integrations with model providers, customer systems, and third-party platforms\r\nDevelop systems for asynchronous jobs, event processing, and long-running AI workflows\r\nDeploy and operate services using AWS\r\nDebug production issues across application, data, model, and infrastructure layers\r\nHelp shape backend architecture and engineering practices as the company grows\r\nWhat we?re looking forApproximately 2?9 years of professional software engineering experience\r\nStrong professional experience with Python\r\nExperience designing and operating production APIs or backend services\r\nStrong understanding of relational databases, SQL, and data modeling\r\nExperience with PostgreSQL or a comparable production database\r\nFamiliarity with AWS, GCP, or another major cloud platform\r\nUnderstanding of application security, authentication, and authorization\r\nExperience debugging and operating systems in production\r\nAbility to independently own technical projects from design through deployment\r\nComfort making pragmatic engineering decisions in an early-stage environment\r\nStrong communication and cross-functional collaboration skills\r\nNice to have (not required)Experience building AI, LLM, agent, or machine-learning infrastructure\r\nExperience integrating OpenAI, Anthropic, or other model providers\r\nFamiliarity with LLM evaluation, retrieval, embeddings, or vector databases\r\nExperience with Docker, Kubernetes, Terraform, or CI/CD systems\r\nExperience with Redis, Kafka, queues, or event-driven architectures\r\nExperience building multi-tenant SaaS products\r\nPrevious experience at an early-stage startup\r\nExperience with data-intensive or distributed systems#J-18808-Ljbffr","datePosted":"2026-11-04T05:43:24.943Z","dateModified":"2026-11-04T05:43:24.943Z","hiringOrganization":{"@type":"Organization","name":"Pronexus","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"e33559678987df4d141fe350"},"url":"https://jobsearcher.com/jobs/e33559678987df4d141fe350"}}