Senior Platform Engineer at Ironsite in San Francisco, CA

About Ironsite

Construction is one of the most complex and labor-intensive industries, spending $7 trillion annually on labor, but productivity losses cost $1.6 trillion per year due to outdated management tools.

Ironsite leverages wearable cameras combined with human labeling and AI vision language models to drive on-site productivity, safety & training for crafts workers. We put cameras on construction workers' hard hats and vests, then use advanced computer vision to analyze what's actually happening on job sites.

We help teams reduce labor costs, improve safety, and deliver projects faster. To date, we’ve captured 50,000+ hours of construction footage across 7 states and have recently partnered with the nation’s #2 hard-hat manufacturer, Studson, to develop custom hardware purpose-built for the field.

We’ve raised over $13M from 8VC, South Park Commons, and 30+ leading operators and technologists, including Eric Glyman (Ramp), Jeff Dean (Google), and Scott Wu (Cognition). Now, we’re building the team to scale nationwide.

The Role

We're seeking an exceptional Member of Technical Staff to help build out our Platform. You'll build and scale core platform features that transform how construction teams manage safety, productivity and workforce development for their frontline craftworkers. You'll own critical initiatives that directly impact thousands of construction workers and dozens of major contractors.

What You'll Build

• Time + Attendance Automation: Build automated timesheet systems with text-based dispatch, pre-shift roll call, and streamlined time entry workflows for construction workers in the field
• Project Management Dashboard: Build comprehensive project roadmap views that show project sequence, man-loaded schedules, and crew distribution to help superintendents easily track if projects are on target
• Incentives + Rewards: Develop gamified reward systems that motivate construction workers through milestone achievements and skill-based recognition programs, ultimately driving more money in their pockets
• Training + Skills: Build comprehensive learning management systems that identify skill gaps and deliver personalized training recommendations and certification tracking
• Integrations + API: Design robust API infrastructure and third-party integrations that connect Ironsite with existing construction management tools, HR systems, and industry-standard platforms

Technical Challenges You'll Solve

• Building scalable workforce management systems that handle automated timesheets and dispatch workflows for thousands of construction workers
• Creating intuitive project roadmap interfaces that visualize complex scheduling, crew allocation, and project sequencing data for superintendents
• Designing reward and incentive platforms that integrate with payroll systems and handle diverse recognition programs across multiple contractors
• Building robust API integrations with legacy construction management software and enterprise HR systems that have inconsistent data formats

What We're Looking For

Technical Excellence

• [required] 4+ years of experience in full-stack platform development and distributed systems in production environments
• [required] Deep expertise in backend technologies (Node.js, PostgreSQL, Redis) and modern web frameworks
• Strong background in real-time data processing, analytics platforms, and API design
• Production experience with cloud infrastructure (AWS), microservices architecture, and high-scale data pipelines
• Systems thinking for end-to-end platform architecture and cross-team integration

Domain Expertise

• Experience building B2B SaaS platforms for operational or industrial environments
• Understanding of workforce management systems, safety compliance software, and project management tools
• Background in developing user interfaces for non-technical users in field environments
• Knowledge of data privacy regulations, enterprise security requirements, and API best practices

Preferred Qualifications

• Advanced degree (M.S./Ph.D.) in Computer Science, Software Engineering, or related field with focus on distributed systems
• Experience with construction management software, HR tech platforms, or similar enterprise workflow tools
• Background in building analytics dashboards, reporting systems, and business intelligence platforms
• Publications or experience in workforce analytics, safety technology, or industrial IoT platforms
• Experience with construction, manufacturing, or similar operational industries

Location & Compensation

• San Francisco Bay Area (on-site)
• Competitive salary and significant equity package
• Full benefits including health, dental, vision, and 401k +6% match