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Agentic Developer, LLM‑Native / Enterprise (Contractor), West Coast

ION GroupNew York, NY

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Overview

Schedule
Full-time
Career level
Senior-level

Job Description

Lab49 is looking for Agentic Developers, engineers who don’t just use AI tools but write software through them. 
This is not a role focused on “adding AI features” or “building AI platforms.” Instead, we are seeking developers who generate production‑grade enterprise code using large language models as a primary interface, particularly while modernizing or extending complex, legacy systems in highly regulated environments. 
You will operate as a vibe coder in the best sense of the term: combining deep engineering intuition, strong system design instincts, and fluent command of LLMs to move faster than traditional development workflows- without compromising rigor, compliance, or reliability.  

What You’ll Do

  • Generate, refactor, and extend enterprise‑grade codebases by orchestrating LLMs as first‑class development tools, not just assistants  
  • Modernize and evolve legacy systems (often written in traditional enterprise stacks) using AI‑driven development workflows 
  • Apply “vibe coding” practices responsibly within highly regulated domains such as financial services, capital markets, or other compliance‑heavy environments  
  • Design and guide agentic workflows where LLMs reason, iterate, and produce code aligned with business and architectural constraints 
  • Validate, test, and harden AI‑generated code to meet production, security, and audit standards 
  • Collaborate closely with product managers, architects, and clients to translate ambiguous requirements into working systems - fast 
  • Influence how Lab49 and its clients adopt LLM‑native software engineering practices at scale 

What We’re Looking For

  • Strong software engineering background with experience in enterprise or legacy systems 
  • Hands-on experience manufacturing production-grade software in AI-assisted way at scale (not just autocomplete or chat usage, but sustained code production through prompts, agents, or workflows)
  • Experience working within mature CI/CD environments, with automated testing fully integrated into the delivery pipeline 
  • Comfort working in regulated, risk‑aware environments, where correctness, explainability, and traceability matter 
  • Ability to reason about system behavior, edge cases, and failure modes- even when the code is AI‑generated 
  • Fluency in at least one major enterprise language or ecosystem (e.g., Java, C#, Python, JVM‑based stacks, etc.) 
  • Strong intuition for when to trust the model- and when not to 
  • Leading teams through the AI adoption journey and helping enterprises build scalable, robust AI software factory frameworks

Nice to Have

  • Experience designing or using agentic development workflows (multi‑step prompting, tool‑using agents, code‑generation loops) 
  • Exposure to modernization programs (monolith → services, legacy refactors, platform rewrites) 
  • Opinions about how software engineering should evolve in an LLM‑first world - and the ability to defend them 
Lab49 is a specialist strategy, design, and technology consulting company dedicated to the financial services industry. We were founded in 2002 to fill a need in the Financial Technology marketplace for high-end execution and reliable delivery of technology projects.
Our consultants are experts in strategy, user experience, architecture, engineering, and delivery management. We combine knowledge of the latest trends in technology with deep domain expertise to deliver innovative solutions with accelerated time-to-market.
We have office hubs in Midtown Manhattan, Washington DC, London, Budapest, New Delhi and Sydney. 
Lab49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences. We respect the varied identities, abilities, cultures, and traditions of the individuals who comprise our organization and recognize the value that different backgrounds and points of view bring to our business.
Lab49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor. 

Automate your job search with Sonara.

Submit 10x as many applications with less effort than one manual application.

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FAQs About Agentic Developer, LLM‑Native / Enterprise (Contractor), West Coast Jobs at ION Group

What is the work location for this position at ION Group?
This job at ION Group is located in New York, NY, according to the details provided by the employer. Some roles may also include multiple work locations depending on the requirement.
What pay range can candidates expect for this role at ION Group?
Employer has not shared pay details for this role.
What employment applies to this position at ION Group?
ION Group lists this role as a Full-time position.
What experience level is required for this role at ION Group?
ION Group is looking for a candidate with "Senior-level" experience level.
What is the process to apply for this position at ION Group?
You can apply for this role at ION Group either through Sonara's automated application system, which helps you submit applications 10X faster with minimal effort, or by applying manually using the direct link on the job page.