Senior Software Engineer (AI)
ArcadiaAbout the role
The Opportunity
A high-growth, well-funded startup is rebuilding an entire industry's relationship with data, using AI agents to turn messy, unstructured chaos into clean, actionable intelligence at scale. Built natively around modern ML/AI from day one, not bolted onto legacy systems, the platform is already driving measurable results for enterprise customers. They've been recognized as one of the standout early-stage players in their space, and they're continuing to scale fast.
They're hiring a Senior Software Engineer to help build the product experience end to end, from backend services to the UI customers actually touch, with regular exposure to the AI agent layer powering the platform underneath. You'll work directly with founders, shipping end-to-end product features in a high-ownership, fast-paced environment.
The Stack & Scale
React/TypeScript on the frontend, Python and Node.js on the backend, deployed on AWS. The platform's AI layer runs on LLMs, RAG pipelines, and LangChain, so you'll be shipping features that sit right on top of that infrastructure.
What You'll Do
Build and ship fullstack features across the product, from backend services to frontend UI
Work with the engineers building the AI agent layer to surface agent outputs and AI-driven features in the product
Design and scale backend services and APIs supporting real-time, high-throughput workloads
Partner with product and design to take features from concept to production
Contribute to reliability, performance, and code quality across the stack
Work directly with founders and have real say in product features, roadmap, and technical decisions
What Makes You a Fit
Bachelor's Degree in Computer Science or related STEM field
5+ years of fullstack engineering experience
Strong experience with a modern frontend framework (React, Vue, etc.)
Backend experience with Python, Node.js, Golang, or similar
Experience working with or around AI/ML systems, hands-on LLM or agent experience is a bonus but not a dealbreaker
Solid understanding of API design, databases, and cloud infrastructure, AWS a plus
Startup experience preferred, but we care more about how you think and build than where you've worked
Strong communicator and takes ownership without being asked twice
Responsibilities
- Build and ship fullstack features across the product
- Work with engineers building the AI agent layer
- Design and scale backend services and APIs
- Partner with product and design to take features from concept to production
- Contribute to reliability, performance, and code quality
Qualifications
- Bachelor's Degree in Computer Science or related STEM field
- 5+ years of fullstack engineering experience
- Strong experience with a modern frontend framework
- Backend experience with Python, Node.js, Golang, or similar
- Experience working with or around AI/ML systems
Skills mentioned
About Arcadia
Arcadia is a high-performance recruitment firm operating on a top percentile trajectory across North America, with growth speed and per-head productivity placing it among the top 1–3% of agencies in the global market place. Built to challenge the traditional model, Arcadia has scaled to a multi-million dollar run rate in under a year through disciplined execution, selective partnerships, and consistent, elite-level performance. The business is designed for precision, output, and scale. Our footprint spans North America from coast-to-coast, with presence in Toronto and New York as well as key U.S. markets including Charlotte, Boston, San Francisco, Atlanta, and Miami. We partner with companies backed by leading venture firms including Y Combinator, Andreessen Horowitz, General Catalyst, Founders Fund, Accel, and GV, delivering talent that directly impacts outcomes at the edge of innovation. At the same time, we work with mid-market and enterprise organizations across North America, enabling access to the same caliber of talent, speed, and precision required to compete in an AI-driven landscape. Arcadia sits in a category that is not widely accessible, nor easily replicated. Built on Trust. Delivered with Discipline. Rooted in Integrity.