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Senior Software Engineer, Backend — Founding Team

ArchiBoost AI
San Francisco, CA
On-siteUSD 150,000 - 250,000 / year

About this role

Role Overview

ArchiBoost AI is building an AI co-pilot for the AEC industry — automating code compliance, structuring firm knowledge, and performing real-time QA/QC across complex building projects.

As a Senior Backend Engineer, you'll build the core infrastructure, data systems, and AI pipelines powering this vision.

This isn't a typical backend role—you'll work on retrieval over large-scale architectural datasets, AI reasoning across drawings and codes, and distributed systems supporting LLM-powered workflows.

You'll collaborate closely with product, ML, and design to turn complex architectural workflows into scalable systems.

What You'll Work On

  • Retrieval systems over large, unstructured architectural and regulatory datasets
  • AI pipelines that reason across drawings, codes, and specifications
  • Multi-step agents performing QA/QC across building projects
  • Distributed systems managing compute-heavy (CPU/GPU) workloads
  • Evaluation frameworks for domain-specific AI performance
  • Real-time collaboration between humans and AI on design artifacts

Responsibilities

  • Build and scale backend systems for AI-driven workflows

  • Design APIs orchestrating LLMs, retrieval, and reasoning systems

  • Develop pipelines for processing drawings, documents, and BIM data

  • Architect distributed systems for large-scale, multi-region datasets

  • Optimize performance, latency, and cost of AI workloads

  • Productionize LLM/agent systems and improve reliability + observability

  • Contribute to core architecture, infrastructure, and engineering standards

  • Required Qualifications

  • 5+ years backend engineering experience

  • Strong skills in Python, Go, or TypeScript

  • Experience with distributed systems and scalable APIs

  • Solid CS fundamentals (systems, data structures, concurrency)

  • Preferred Qualifications

  • Experience with LLMs, RAG, or vector databases

  • Large-scale data pipelines or document systems

  • Cloud infrastructure (AWS/GCP)

  • GPU workload optimization

  • Startup experience

  • Ideal Candidate

  • Builders who enjoy hard problems and real-world impact. High ownership, fast execution, low ego.

  • Why ArchiBoost AI

  • Redefine how buildings are designed, validated, and delivered

  • Build an AI co-pilot for a massive, underserved industry

  • Work on real-world systems combining document understanding, retrieval, and reasoning

  • Partner with leading architecture firms and top-tier investors

  • Join early, ship fast, and own meaningful technical decisions

Location

This role is in-office, five days per week, in San Francisco.

Compensation & Benefits

  • Base salary range: $150,000-$250,000
  • Meaningful equity stock options
  • 401(k) with employer matching
  • Excellent health insurance (90% employer-covered)
  • Unlimited PTO
  • Daily lunch and dinner provided in office
  • Work alongside a world-class founding team
  • Opportunity to help build a category-defining company

Role Details

Department

Engineering

Location

San Francisco, CA

Employment Type

Full-Time

Experience

  • 5–10+ years

  • Back to all positions

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