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Kimley-Horn is looking for a Software Developer - Applied AI in our Jacksonville, Florida (FL) office! The position could also be located in Tampa, St. Petersburg, Sarasota, or Orlando. This is an office-based opportunity.

Kimley-Horn's Technology and Innovation team builds internal software that helps civil engineers deliver projects faster, more consistently, and with higher quality. Our work spans full-stack web applications, system integrations, and AI-powered features, ranging from focused utilities that streamline daily workflows to deeper platforms that bring multi-agent and retrieval-augmented systems into engineering practice.

In this role, you will build full-stack applications across that spectrum. Some are conventional web applications with discrete AI integrations; others are built around retrieval-augmented generation, multi-agent orchestration, or similar applied AI architectures. You will work directly with practicing engineers to understand real problems, ship solutions end-to-end, and refine them based on adoption. Additionally you will:

• Build full-stack web applications that solve real workflow problems for civil engineers, ranging from focused utilities to firm-wide platforms.
• Integrate AI capabilities where they create value, including multi-agent workflows, RAG pipelines, and intelligent assistants on top of engineering data.
• Develop reliable backend services and modern, responsive front ends, integrating with CAD, engineering platforms, document stores, and structured and unstructured data.
• Partner with engineers and domain experts to identify high-impact opportunities, prototype solutions, refine with feedback, and productionize for firm-wide adoption.
• Maintain engineering-grade quality through testing, version control, CI/CD, and supportable releases as platforms and underlying models evolve.

• 3+ years of professional post-grad software development experience building applications used by others. 
• Full-stack development experience with strong C#/.NET/TypeScript on the backend and a modern front-end framework (React, Blazor, Angular, or equivalent).
• Strong SQL and/or NoSQL skills with sound data modeling instincts.
• Experience with Azure Cosmos DB, including data modeling and querying for application backends.
• Hands-on experience designing and shipping AI multi-agent workflows.
• Practical experience building production RAG systems with Azure AI Search, including chunking, embedding, retrieval, and grounding strategies.
• Experience with Azure AI Foundry for building, deploying, and operating AI applications.
• Demonstrated use of AI-assisted coding tools (Claude Code, OpenAI Codex, or equivalent) to accelerate delivery while maintaining code quality.
• Strong communication skills and the ability to partner directly with practicing engineers, translating ambiguous needs into shipped software.

Preferred

• Background in civil engineering or familiarity with AEC workflows (CAD/BIM, plan production, site/roadway/drainage design).

Why This Role

• Enterprise impact: Your software will be used daily by engineers delivering real infrastructure projects across the country.
• Range of work: Your day-to-day moves between standard full-stack development, system integration, and applied AI, building both the everyday tools engineers rely on and the more ambitious AI-powered systems.
• Strategic transformation opportunity: You will help define how a 10,000-person engineering firm builds, adopts, and scales internal software, including how AI gets woven into engineering practice.
• High ownership: You will shape architecture, influence priorities, and see your work in active use end-to-end.

At Kimley-Horn, we do things differently. People, clients, and employees are at the forefront of who we are. Clients know we prioritize achieving their goals and growing their success. Employees know our culture and approach to business are built on a desire to provide an environment for everyone to flourish. Our commitment to quality is only as good as the people behind it- that's why we welcome and develop passionate, hardworking, and proactive employees. We take pride in how our employee retention, robust benefits package, and company values have led to Kimley-Horn's placement on the Fortune "100 Best Companies to Work" list for 19 years!

Key Benefits at Kimley-Horn

• Exceptional Retirement Plan: 2-to1- company match on up to 4% of eligible compensation (salary + bonus) and additional profit-sharing contribution.
• Comprehensive Health Coverage: Low-cost medical, dental, and vision insurance options.
• Time Off: Personal leave, flexible scheduling, floating holidays, and half-day Fridays.
• Financial Wellness: Student loan matching in our 401(k), and performance-based bonuses.
• Professional Development: Tuition reimbursement and extensive internal training programs.
• Family-Friendly Benefits: New Parent Leave, family building benefits, and childcare resources.