Deployed Engineer, Professional Services (NYC)

LangChain, Inc

$150K — $215K *
Enterprise Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 4+ years of software engineering experience with deep expertise in Python; TypeScript/JavaScript is a plus.
  • 2+ years of hands-on experience building and shipping production agent systems.
  • Strong client-facing communication skills to articulate architectural decisions to technical stakeholders.
  • Experience with LangChain/LangGraph/Deep Agents or comparable frameworks and multi-agent patterns.
  • Familiarity with designing and implementing evaluation methodologies for non-deterministic AI systems.
  • Ability to operate across advisory to embedded delivery spectrum.

Responsibilities

  • Advising on agent architecture design and evaluation strategy review, providing best-practice production guidance.
  • Co-building with the customer's engineering team across the full Agent Development Lifecycle (ADLC) in outcome-scoped engagements.
  • Embedding within customer teams for extended periods to act as a member of their organization while shipping agent systems.
  • Managing the end-to-end ADLC, including architecture design, orchestration patterns, evaluations, and custom conversational UIs.
  • Conducting post-training, supervised fine-tuning, and model selection with a focus on applied AI methodologies.

Benefits

  • Medical, dental, and vision coverage.
  • Flexible vacation policy.
  • 401(k) plan.
  • Meals provided on in-office days in the US.
Full Job Description
About the Role

We're looking for a Deployed Engineer to join our Professional Services team, working directly with enterprise customers to build reliable, production agents. You'll translate vague enterprise workflows into concrete software specs and guide engineering teams through the resulting solution, or build it for them. You might spend a week designing a customer's agent architecture, a few weeks co-building their evaluation pipeline, or a quarter embedded inside their team shipping alongside their engineers. You are someone who's built real AI systems for production and can defend the technical tradeoffs within them.

Key Responsibilities
  • Advising: Agent architecture design, evaluation strategy review, and best-practice production guidance.
  • Building: Co-build with the customer's engineering team across the full Agent Development Lifecycle (ADLC) in outcome-scoped engagements.
  • Embedding: Serve as a deployed engineer inside the customer's team for extended engagements, operating as a de facto member of their org to ship agent systems directly.
  • Agent Engineering: ADLC end-to-end, architecture design, orchestration patterns, evals, custom conversational UIs, and production deployment.
  • Applied AI: Post-training, supervised fine-tuning, harness engineering, trace mining, model selection and evaluation methodology.
Requirements
  • 4+ years of software engineering experience with deep expertise in Python. TypeScript/JavaScript a plus.
  • 2+ years of hands-on experience building and shipping production agent systems.
  • Strong client-facing communication skills, with the ability to confidently articulate architectural decisions to technical stakeholders (engineers, architects, CTOs).
  • Strong experience with LangChain/LangGraph/Deep Agents or comparable frameworks, including multi-agent patterns and state management (short and long-term memory).
  • Deep familiarity designing and implementing evaluation methodologies for non-deterministic AI systems.
  • Comfortable operating across the full spectrum from advisory to embedded delivery.
Nice to Have
  • Exposure to dataset curation and post-training techniques (SFT, DPO, RLHF) on open-weight models using tools like Axolotl, Unsloth, Hugging Face transformers, or TRL.
  • Experience with trace mining to drive continuous improvement loops
Location

New York, New York

Compensation

$150,000-$215,000 base + equity

Compensation Philosophy:

We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks. Actual compensation and offerings will vary based on role, level, and location. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations.

Benefits

Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more.

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