Senior Forward Deployed Engineer

Elios AI; Boston (MA); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Elios AI in Boston, MA is seeking an experienced software engineer to build production AI systems for enterprise clients. This hands-on role covers RAG pipelines, LLM integrations, and observability, with a focus on delivering reliable features that clients depend on.

You will own your workstream from scoping through deployment, collaborate with client stakeholders, and stay current with evolving tooling. The role expects 5+ years of production software experience and strong full-stack skills

Qualifications

• 5+ years of production software engineering with hands-on LLM work.
• Experience shipping AI systems used by real users with measurable outcomes.
• Proficiency across Python, TypeScript, React, and modern backend frameworks.
• Client-facing or consulting delivery experience with shipped projects.
• Hands-on builder who ships, not just delegates.

Responsibilities

• Build and ship LLM-powered features into production, including RAG pipelines and model integrations.
• Instrument work with evals, observability, latency optimization, and cost management.
• Translate technical decisions for non-technical stakeholders.
• Own your workstream from scoping through deployment.
• Work with tools like Claude Code, Cursor, and Codex to amplify output while owning code.

Skills

LLM Development

Full-stack Python/TypeScript/React

Client-facing delivery

Observability & performance

Hands-on builder

LLM tools (Claude Code/Cursor/Codex)

Tools

Claude Code

Cursor

Codex

Job description

Location: Boston, MA | Type: Full Time | Setup: Hybrid | Experience: 5+ years

About the Role

You'll build production AI systems for enterprise clients and sit in the room where the decisions get made. This is hands-on engineering work: RAG pipelines with real retrieval metrics, agent architectures with observability, LLM integrations with cost controls and fallback strategies. You ship things real users depend on, then stand behind them with the client.

Our client is a fast-moving organization deploying AI into production environments where the difference between a demo and a product actually matters. The work rewards engineers who are in the trenches with current tooling, not coasting on last year's knowledge.

If you can build the thing right and explain to a stakeholder why it was the right thing to build, this role will fit.

What You'll Do

• Build and ship LLM-powered features into production, including RAG pipelines, agent workflows, and model integrations
• Instrument what you build with evals, observability, latency optimization, and cost management
• Work directly with client stakeholders, translating technical decisions for non-technical audiences
• Own your workstream from scoping through deployment
• Use agentic coding tools (Claude Code, Cursor, Codex) daily to amplify your output while reviewing and owning every line that ships
• Stay current with frameworks, protocols, and models as the tooling landscape moves

Qualifications

• 5+ years of production software engineering, with hands-on LLM-focused work
• Experience shipping AI systems real users depend on, with measurable outcomes
• Full-stack capability across Python, TypeScript, React, and modern backend frameworks
• Client-facing or consulting delivery experience, with a track record of projects that shipped rather than just started
• Comfortable getting hands-on; this is a builder role, not a delegator role

Why Join Us

You'll work on consequential AI deployments with senior practitioners who hold a high bar, with direct client exposure and real ownership. Competitive compensation and benefits.