Senior Full Stack Engineer

Latitude IT; San Francisco (CA); Hybrid; USD 200,000 - 240,000; Full time

Benefits offered by this job

Sign-on bonus

Equity

Job summary

Latitude IT in San Francisco is hiring a Senior Software Engineer to own end-to-end, full-stack product work on a modern payroll platform for construction contractors. You’ll collaborate across contractors and product, shaping architecture and the roadmap while shipping robust React frontends, Node APIs, and payments integrations.

Ideal candidates have 4–9 years in full-stack roles at high-growth startups, strong data modeling skills, and a fintech/payroll inclination.

Qualifications

• Senior Software Engineer with 4–9 years of full-stack product work.
• Experience at a high-growth Series A–D startup with strong engineering bar.
• Balance across frontend UI and backend APIs; not skewed to one side.
• Led a large, complex product from design through production.
• Payments, payroll or fintech infra experience; US citizenship or green card.

Responsibilities

• Write technical blueprints and build full-stack solutions across React frontends and Node APIs.
• Talk directly to contractors to understand pain points and test shipped features.
• Shape product architecture and the technical roadmap with product.
• Provide detailed feedback in code reviews to improve engineering quality.
• Build shared building blocks to accelerate other engineers.
• Apply AI tools throughout the workflow to ship more, faster.

Skills

Full-stack expertise

React frontend

Node APIs

Data modeling

API design

Leadership experience

Effective communication

AI/native workflow

Tools

TypeScript

React

React Native

Node.js

MongoDB

Job description

Location: San Francisco | Hybrid (4 days onsite)

Package: $200K to $240K base + sign-on + equity

The Opportunity:

Payroll for a construction contractor looks nothing like payroll for a tech company. Think multiple job sites, union rates, certified payroll and costs split across dozens of projects at once.

Yet most of the contractors building America’s roads, hospitals, schools and data centers still run it all on on-premise software from the 1980s and 1990s.

This US vertical SaaS business is replacing those systems with one modern platform for payroll, HR and job costing, built on AI and embedded payments.

Backed by top US VCs, it’s reached tens of millions in ARR within a few years of launch, with the vast majority of the market still to win.

• TypeScript everywhere, React and React Native, Node/Express, MongoDB, plus payments and payroll APIs

The Role:

• You’ll join an engineering team scaling rapidly over the next 12 months, without lowering the bar. More than a quarter of the engineers and PMs are ex-founders, everyone works lean and AI-native, and process only exists where it’s needed.
• As a Senior Engineer, you’ll own complex products end to end: write the technical blueprint, build it across the stack, ship it, then hear directly from the contractors using it.
• The challenge is turning the real complexity of construction into software that feels simple for someone on a job site.
• Scope follows output. Engineers who consistently ship for customers earn bigger problems, more ownership and higher pay.

What you'll be doing:

• Write technical blueprints and build full-stack solutions across React frontends and Node APIs
• Talk directly to contractors to understand their pain and test what you've shipped
• Shape product architecture and the technical roadmap alongside product
• Give detailed feedback on blueprints and in code review to lift the team's engineering quality
• Build the shared building blocks and abstractions that make every other engineer faster
• Use AI tools throughout your workflow to ship more, faster

What you'll bring:

• A Senior Software Engineer title already, with 4 to 9 years of full-stack product work
• Current or recent experience at a high-growth Series A to D startup with a strong engineering bar
• Real balance across frontend UIs and backend APIs, not mostly one side
• Experience leading a large, complex product from design through to production
• Strong data modeling and API design fundamentals
• Clear, direct communication, with the ability to explain complex ideas simply in writing
• Real curiosity about construction and how the physical world gets built
• Founder experience, having held a Senior title before starting your own thing
• Payments, payroll or fintech infrastructure experience
• A big tech foundation followed by a move into a fast-growing startup
• US citizenship or a Green Card (no visa sponsorship or transfers)