Senior Full Stack Engineer

Senior Full-Stack Engineer

NYC | Full In Office | Series A Construction-Tech Startup

The Company

Our client is building the next-generation operating system for commercial HVAC, Electrical, and Plumbing suppliers and subcontractors.

Over the past year, their V1 quoting product has scaled to 250 quotes per day and grown to $1.5M ARR, with adoption across many of the top suppliers in North America. Fresh off an $11M Series A funded by leading construction-tech investors, the company is entering its next phase of growth, with engineering at the center of everything they build next.

The Role

They are hiring a Senior Full-Stack Engineer to help scale a fast-growing real-time collaboration platform. You will join a small, highly capable engineering team building deeply technical systems, from high-performance web applications to distributed real-time infrastructure, powering the future of commercial construction workflows.

This role is ideal for an engineer who enjoys owning complex features end-to-end, working across the stack, and building production-grade systems that are fast, reliable, and maintainable.

Responsibilities

• Build and Ship Across the Stack
• Design, implement, and ship complex features across frontend, backend, and infrastructure with a strong focus on correctness, performance, and reliability.
• System Design and Execution
• Contribute to the design of scalable systems and services, making thoughtful tradeoffs around complexity, performance, and long-term maintainability.
• Production Ownership
• Own features and services in production, including debugging issues, improving observability, and iterating based on real-world usage.
• Collaboration
• Work closely with product, design, and engineering to translate product requirements into robust technical solutions.
• Code Quality and Standards
• Write clean, well-tested code and contribute to shared standards around testing, CI/CD, and system reliability.

What They’re Looking For

You can take a loosely defined product goal and turn it into a well-designed, production-ready feature, from UI through backend and persistence, without excessive process. You have strong instincts for reliability and performance and enjoy working close to real customer usage by shipping, measuring, iterating, and hardening systems in production.

Required Qualifications

• 4 years of industry software development experience
• Strong expertise in TypeScript, React / Next.js, Node.js, and Python
• Backend and infrastructure experience with AWS (or similar), Docker, and CI/CD pipelines
• Experience with databases including MongoDB, DynamoDB, or PostgreSQL
• Deep understanding of concurrency and distributed systems, including Kubernetes, clustered environments, and multi-user synchronization
• Hands-on experience with real-time systems such as WebSockets, Redis, Yjs, or CRDTs
• Strong focus on frontend reliability and performance optimization
• Experience with monitoring and testing frameworks such as Sentry, Fullstory, PostHog, Cypress, or Playwright

Nice to Have

• Infrastructure as Code experience using Terraform, CloudFormation, AWS CDK, or Pulumi
• Kubernetes or cluster orchestration experience
• Low-level programming experience in Rust or C
• Open-source contributions or experience defining engineering best practices at scale
• Experience building interactive or collaborative visual tools such as Figma-style editors or whiteboard applications
• Prior experience working in a startup environment, especially during scaling phases

Compensation and Benefits

• Base Salary: $160K to $200K, depending on experience
• Equity: Meaningful equity package
• Benefits: Medical, dental, and vision coverage
• Perks: Free lunches and dinners provided

Location

This is a full-time, onsite role based in New York City’s Flatiron District, just minutes from Madison Square Park and Union Square. Working onsite enables real-time collaboration, faster iteration, and tighter alignment across engineering, product, and leadership.