Full-Time

AI Engineer

WITHIN

WITHIN

201-500 employees

Unified performance branding and media optimization

Compensation Overview

$90.9k - $254.1k/yr

+ Seamless allowance

Long Island City, Queens, NY, USA

Hybrid

Category
Software Engineering (1)
Required Skills
LLM
Microsoft Azure
Python
SQL
OpenAI
AWS
Google Cloud Platform
Requirements
  • Strong programming skills in Python with experience building production systems.
  • Experience building applications powered by LLM APIs (OpenAI, Anthropic, Vertex AI, etc.).
  • Deep understanding of context windows and token limits.
  • Deep understanding of multi-turn conversation behavior.
  • Deep understanding of tool/function calling.
  • Deep understanding of structured outputs (JSON schema).
  • Deep understanding of prompt design and failure modes.
  • Experience integrating external APIs into production systems.
  • Proficiency in SQL.
  • Experience working with cloud platforms (Google Cloud Platform, Amazon Web Services, or Microsoft Azure).
  • Strong problem-solving skills and ability to debug complex system behavior.
  • Excellent communication and cross-functional collaboration skills.
Responsibilities
  • LLM Application Development: Design, build, and maintain AI-powered applications leveraging LLM APIs, tool calling, and structured outputs.
  • Agent & Tool Orchestration: Develop and improve agent architectures that integrate tools such as SQL execution, Python code execution, and marketing platform APIs through MCP-style integrations.
  • Context & Memory Management: Design and refine multi-turn context handling, session memory strategies, and prompt structures to improve response reliability and reduce hallucinations.
  • Reliability & Guardrails: Implement safeguards for tool execution, SQL queries, and code execution. Improve retry logic, structured validation, and hallucination mitigation strategies.
  • Evaluation & Quality Assurance: Contribute to building structured evaluation frameworks for LLM-powered systems, including multi-turn testing, regression testing, and task-based success metrics.
  • Product Expansion: Support expansion of Rai into document generation, tables, slide decks, and potential Google Workspace integrations.
  • Collaboration: Work closely with Machine Learning Engineers, Product Managers, and Full-Stack Engineers to ensure AI systems are robust, maintainable, and aligned with business goals.
  • Continuous Innovation: Stay current with advances in LLM systems, agent architectures, and applied AI tooling to continuously improve Rai’s capabilities.
Desired Qualifications
  • Experience designing evaluation frameworks for LLM-powered systems.
  • Understanding of embeddings, vector search, and Retrieval-Augmented Generation architectures.
  • Experience building agent or multi-agent workflows.
  • Experience with stateful execution environments or sandboxed code execution.
  • Experience with document automation (Google Docs, Slides, PDFs).
  • Experience building internal developer tools or productivity platforms.
  • TypeScript.

Within is a performance branding agency that blends brand-building with performance marketing to improve clients’ business outcomes. It creates unified marketing strategies that cover the entire customer journey, from awareness to purchase, and deliberately collapses the traditional marketing funnel to optimize media investments and deliver measurable financial results. Working with a diverse roster of established brands, it acts as an extension of clients’ marketing teams, forming strategic partnerships to drive continuous optimization and scalable growth. Its main goal is to maximize marketing ROI and deliver long-term value by aligning brand and performance across channels and touchpoints.

Company Size

201-500

Company Stage

Seed

Total Funding

$150K

Headquarters

New York City, New York

Founded

2015

Simplify Jobs

Simplify's Take

What believers are saying

  • Foot Locker's Lace Up plan expansion drives omni-channel growth through WITHIN partnership.
  • Performance Branding methodology meets short-term goals without sacrificing long-term profitability.
  • Scalable integrated media and personalized content solutions attract enterprise clients globally.

What critics are saying

  • Foot Locker may terminate WITHIN partnership if Lace Up plan fails to deliver growth.
  • AI-driven automation platforms like Albert.ai threaten WITHIN's manual Performance Branding model.
  • Client consolidation and in-house marketing shifts reduce demand for agency services.

What makes WITHIN unique

  • Integrates brand and performance marketing, collapsing traditional silos for unified strategy.
  • Media AOR for major brands including Foot Locker, Casper, and The North Face.
  • 200+ creative and digital professionals delivering $68 million in annual revenue.

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Your Connections

People at WITHIN who can refer or advise you

Benefits

Health Insurance

Unlimited Paid Time Off

Phone/Internet Stipend

401(k) Company Match

Hybrid Work Options

Professional Development Program

Company Social Events

Company News

First Page Sage
Aug 7th, 2025
Executive Interview Series: Q&A with Joe Yakuel on Building Brands Through SEO and Performance Branding

Known as a leading digital marketing agency for retail and consumer brands, WITHIN has partnered with companies like Foot Locker, The North Face and Timberland to rethink how they grow by uniting brand storytelling with performance marketing.

Business Wire
Mar 13th, 2024
Performance Branding Firm Within Named As Media Agency Of Record For Foot Locker, Inc. North America

NEW YORK--(BUSINESS WIRE)--WITHIN, the world’s only Performance Branding firm, announced today that it has taken on the role as the North American media agency of record for Foot Locker, Inc., a leading omni-channel footwear and apparel retailer that unlocks the “inner sneakerhead" in all of us. This exciting partnership follows the earlier unveiling of Foot Locker’s groundbreaking “Lace Up” plan, announced in March 2023 to strategically invigorate growth across the diverse portfolio of brands under Foot Locker, Inc. The plan focuses on four key imperatives: expanding sneaker culture; powering up the Foot Locker, Inc. portfolio; deepening relationships with Foot Locker, Inc. customers across all brands; and delivering a best-in-class omni experience. “Following a competitive RFP process, we’re excited to award the North American media business to WITHIN,” said Katarina Brown, Vice President of Digital Marketing Media at Foot Locker