Build and evolve MCP servers that connect internal systems and data sources into a coherent interface for agents and engineers
Expand and operate our LLM gateway infrastructure: routing, rate limiting, cost attribution, and observability across teams
Turn early patterns into durable defaults: shared prompt libraries, guardrails, and policy-as-code so teams can move fast safely
Shape and maintain structured context artifacts—clean, reliable, agent-consumable—so LLMs working in Mercury's systems can reason accurately about our domain
Improve internal knowledge discoverability and retrieval so both humans and agents can quickly find accurate answers
Partner with domain teams to standardize key sources of truth, and keep them fresh
Has 5+ years of backend development experience in complex, production systems—you've built things that other engineers depended on
Is fluent across programming languages and can navigate platform engineering, infrastructure, and developer tooling without needing a map
Has hands-on experience building LLM-powered systems—RAG pipelines, agents, eval frameworks—and has shipped at least one of these to production
Understands the real tradeoffs in AI deployments: cost modeling, observability, latency, and safety—not just the exciting parts
Is high-agency and self-directed. You can operate effectively without tightly-defined scope, find the highest-leverage work, and get it done
Communicates clearly across technical and non-technical audiences—you can explain what you built and why it matters
The total rewards package at Mercury includes base salary, equity, and benefits. Our salary and equity ranges are highly competitive within the SaaS and fintech industry and are updated regularly using the most reliable compensation survey data for our industry. New hire offers are made based on a candidate’s experience, expertise, geographic location, and internal pay equity relative to peers
US employees (any location): $166,600 - $218,700
Canadian employees (any location): CAD 157,400 - 206,650
Our target new hire base salary ranges for this role are the following