Backend Software Engineer, ML - Mid-Staff LevelsBackend Software Engineer, ML - Mid-Staff LevelsGet AI-powered advice on this job and more exclusive features.This range is provided by Third Republic. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay range$170,000.00/yr - $270,000.00/yrDirect message the job poster from Third RepublicPartnering with scaling AI & frontier tech companies, to build elite Software & ML Teams (SF-first, US-wide)The Company:A rapidly growing AI technology company based in San Francisco, revolutionizing the logistics industry by automating manual workflows with agentic AI. Their leadership team previously scaled a last‑mile logistics startup to 450 employees and a $2.1 B acquisition by Shopify; they’ve now raised $25 M in Series A funding to tackle freight brokerage, trucking, warehousing, and beyond. By embedding AI agents into Transportation Management Systems, they eliminate repetitive tasks - email correspondence, phone‑based shipment tracking, invoicing - to drive efficiency, reduce errors, and empower brokers to focus on high‑value work.Role Overview:My client seeks hands‑on engineers who have built products from 0→1, possess strong systems‑design skills, and are passionate about AI‑driven applications. Candidates will design, develop, test, deploy, and maintain core backend infrastructure that powers LLM workflows, voice‑AI skills, and integrations with enterprise logistics platforms.Key Responsibilities:Build and scale microservices that orchestrate AI agents for logistics workflows (proof‑of‑delivery, track‑and‑trace, carrier selection).Develop “skills” libraries enabling agents to send emails, place calls, and interact via chat platforms.Integrate with brokers’ TMS platforms via REST APIs, message queues (SQS/SNS), and webhooks.Implement voice‑AI pipelines for automated outbound calls and real‑time user interactions.Collaborate in fast‑paced sprints, iterating on features, refining system performance, and ensuring reliability through comprehensive monitoring and testing.Ideal Candidate Profile0→1 Experience: Demonstrated ability to ship new products or major features end‑to‑end.Systems Design: Strong at framing requirements, diagramming architecture, evaluating trade‑offs (scalability, failure modes, multi‑tenancy), and articulating design decisions.Cloud Proficiency: Hands‑on AWS experience (SQS, SNS, RDS, Lambda, ECS/EKS, IaC).AI/LLM Integration: Experience building or deploying Retrieval‑Augmented Generation (RAG) pipelines, agentic workflows, or voice‑AI features using OpenAI, Anthropic, Llama, Eleven Labs, etc.Startup Mindset: Thrives in scrappy environments, communicates clearly with cross‑functional partners, and takes full ownership of deliverables.Competitive base salary with equity packageComprehensive health, dental, and vision coverageUnlimited PTO and flexible hybrid schedule401(k) planThey welcome candidates who are energised by AI, curious by nature, and eager to make a tangible impact on one of the world’s most complex industries.Send an email to ellie.palmer@thirdrepublic.com if you'd like to apply!Seniority levelSeniority levelMid-Senior levelEmployment typeEmployment typeFull-timeJob functionIndustriesTechnology, Information and MediaReferrals increase your chances of interviewing at Third Republic by 2xGet notified about new Software Engineer jobs in San Francisco Bay Area.San Francisco, CA $130,000.00-$238,000.00 5 days agoSan Francisco, CA $150,000.00-$250,000.00 4 days agoSoftware Development Engineer I - Frontend & MobileSan Francisco, CA $99,500.00-$200,000.00 3 days agoSan Francisco, CA $130,000.00-$140,000.00 1 day agoSan Francisco, CA $150,000.00-$283,000.00 3 days agoSan Francisco, CA $99,500.00-$200,000.00 1 day agoFull Stack Software Engineer (L4), Product Localization EngineeringSoftware Engineer, Research Infrastructure (University Grad)San Francisco, CA $120,000.00-$160,000.00 2 days agoSoftware Engineer (L5) - Open Connect PlatformSan Jose, CA $100,500.00-$173,250.00 3 days agoSoftware Engineer (Fullstack) - PaymentsSan Francisco, CA $99,500.00-$200,000.00 1 day agoeCommerce Full Stack Developer (React / Shopify) - On SiteSanta Clara, CA $123,500.00-$191,500.00 3 days agoWe’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr