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

Hybrid work opportunity

Category
Software Engineering (1)
Required Skills
LLM
Microsoft Azure
Python
Git
SQL
OpenAI
AWS
Google Cloud Platform

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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 (GCP, AWS, or Azure).
  • Strong problem-solving skills and ability to debug complex system behavior.
  • Excellent communication and cross-functional collaboration skills.
  • Knowledge of Python.
  • Knowledge of SQL.
  • Knowledge of Cloud Platforms (GCP, AWS, Azure).
  • Knowledge of LLMs / AI APIs.
  • Knowledge of Git / GitHub.
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.
  • Data Warehouses (BigQuery, Snowflake, Redshift) as Nice to have.
  • Data Transformation (dbt)
  • Semantic Layers (Cube, Looker, dbt Metrics)
  • 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

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Simplify Jobs

Simplify's Take

What believers are saying

  • TikTok badge status in March 2026 expands WITHIN's access to high-growth retail demand.
  • Foot Locker, The North Face, and Ben & Jerry's signal durable brand credibility.
  • eTail Palm Springs in February 2026 positions WITHIN for retail and ecommerce pipeline growth.

What critics are saying

  • Omnicom-IPG consolidation in 2025 raises buyer pressure on independents like WITHIN.
  • Brands keep in-housing media and creative; Ebiquity and WFA flagged deeper integration demands in 2026.
  • Losing Foot Locker or another anchor client would cripple utilization and trigger a death-spiral.

What makes WITHIN unique

  • WITHIN combines media buying, creative, and measurement under one performance-branding operating model.
  • March 2026 TikTok badging validates channel execution across creator, Shop, and media workflows.
  • March 2024 Foot Locker named WITHIN North American media AOR after a competitive RFP.

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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