Senior Staff Engineer – Agentic Engineering

🕒 Junho 18

🇺🇸 Estados Unidos – Remoto (EUA)

💵 $170.000 - $195.000 / ano

⏰ Tempo Integral

🟠 Sênior

🧑‍💻 Engenheiro Full-stack

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Marathon Health

SiteLinkedInTodas as Vagas

1001 - 5000 funcionários

Fundada em 2005

💼 Consultoria

📦 Logística

🛡️ Seguros

💰 Private Equity Round - Marathon Health em 2019-10

Consulting • Logistics • Insurance

A Marathon Health é uma empresa de serviços de saúde que oferece cuidados primários avançados e soluções de saúde ocupacional personalizadas e focadas no empregador. Eles operam centros de saúde no local, próximos a locais de trabalho, centros de saúde em rede e serviços de saúde primária e comportamental virtual, além de oferecer gerenciamento de saúde populacional, gerenciamento de medicamentos e coaching de estilo de vida para melhorar os resultados e reduzir os custos de saúde do empregador. A Marathon Health faz parcerias com empregadores, sindicatos e planos de saúde para adaptar modelos de atendimento que aumentem o engajamento, reduzam a utilização de pronto-socorro e internação e ofereçam retorno sobre investimento mensurável.

Descrição

• Deliver cross-cutting engineering work — platform components, refactors, integrations, and high-leverage features — at a pace achievable only through disciplined use of coding agents (Claude Code, Codex, or comparable) and modern agentic engineering practices. • Set the technical standard for the engineering organization. • Define and codify what good agentic engineering looks like at Marathon, including spec-driven development workflows, agent steering documents, custom Skills, MCP server patterns, subagent orchestration, and disciplined context engineering. • Package these as reusable skills, plugins, templates, and internal documentation that other engineers can adopt without reinventing them. • Drive architectural decisions that span Engineering, Data, and Infrastructure. • Partner with the Principal Architect and engineering leadership on systems design problems that cross team boundaries, lead ARB-level reviews, and bring strong fundamentals to API design, distributed systems, event-driven patterns, observability, and security within a HIPAA-regulated environment. • Build internal agents, MCP integrations, and RAG-backed applications where the return on investment is clear. • Apply agent development frameworks pragmatically, with appropriate evaluation, guardrails, and cost discipline. • Influence both what gets built and how it gets built. • Partner directly with engineering leaders, product partners, and internal stakeholders to shape initiative scoping, sequencing, and tradeoff decisions. • Bring product judgment and technical discernment upstream into the question of whether a problem warrants engineering investment — not just downstream into how the work is delivered. • Mentor senior and staff-level engineers across the organization. • Lead pairing sessions, design reviews, and brown-bags. • Grow agentic and AI-native engineering fluency across Engineering, Data, and Infrastructure through hands-on collaboration and visible example. • Operate as a healthcare-aware engineer. Respect PHI handling, BAA requirements, audit trails, clinical safety considerations, and regulated change management, and help teams move efficiently within these requirements.

🎯 Requisitos

• BS or MS in Computer Science or related field, or equivalent professional experience. • 10+ years of professional software engineering experience, with significant time at Senior, Staff, or Principal IC levels. • Deep systems design and architecture expertise, including distributed systems, API design, event-driven patterns, data flow, observability, and security. • Agentic capabilities are leverage on top of strong fundamentals; we are not hiring for AI experience in lieu of engineering experience. • Hands-on experience across a modern engineering stack: cloud platforms (AWS, Azure, or GCP); strong proficiency in at least one of .NET, Python, or TypeScript and working fluency in the others; containers and Kubernetes (EKS, AKS, GKE) or comparable orchestrators; infrastructure-as-code (Terraform); CI/CD pipelines (GitHub Actions or comparable); modern observability tooling; and data platforms such as Snowflake and Kafka. • Daily-driver fluency with agentic engineering tooling. • Routine use of a major coding agent (Claude Code, Codex, Cursor, or comparable) as a primary delivery vehicle, with direct experience managing context, orchestrating subagents, working with hooks, skills, and plugins, and recognizing the failure modes of long-horizon agentic tasks. • Working knowledge of MCP — both consuming servers and authoring them — and of how Skills, slash commands, and agent steering documents fit together as a context-engineering toolkit. • Disciplined experience with spec-driven development applied to real production work. • Practical exposure to at least one agent development SDK or framework (such as OpenAI Agent SDK, LangGraph, or comparable), sufficient to make sound build, buy, or skip decisions about agent solutions. • Working knowledge of retrieval-augmented generation (RAG) patterns, including retrieval design, grounding, and the tradeoffs between RAG, fine-tuning, and longer-context approaches. • Demonstrated technical influence beyond individual contributions — patterns, libraries, frameworks, internal tooling, documentation, or mentorship that other engineers adopted and benefited from. • Comfort with product-adjacent work, including crisp problem framing, direct conversations with internal customers, MVP scoping, and confident decisions about whether a problem warrants engineering investment. • Strong written and verbal communication, with the ability to explain technical tradeoffs to executives, clinicians, and junior engineers in the appropriate register for each.

🏖️ Benefícios

• Comprehensive Health & Wellness Benefits: Choice of 2 medical plans, 2 dental plans, and vision coverage, unlimited free mental health benefits and EAP resources, Rewards for challenges and healthy lifestyle activities • Family Friendly & Reproductive Health Benefits: Family-building and hormonal health benefits and paid parental leave • Time-Based Benefits: Generous PTO or FTO, Paid Holidays + A Day for What Matters • Financial Support: Company paid Basic Life and Disability insurance, Supplemental Life, Spending Accounts, 401(k) with employer match and graded vesting • Continuing Medical Education (CME) for maintaining and strengthening the knowledge, skills, and expertise of our health center teammates, as applicable