About Limestone

Input problems, output solutions.

Limestone Technology Group builds AI-enabled applications and automation systems for real operational work. We help private businesses, state and local government, and regulated organizations improve the way work actually gets done — through custom applications, AI agents, workflow automation, integrations, cloud infrastructure, and managed operations.

We don't stop at the prototype. We map how the work happens, redesign the process, apply AI to the repetitive and information-heavy parts, build the software around the improved workflow, and then host, monitor, and continuously improve it in production. Our work is practical, production-focused, and measured by outcomes.

The Role

We're hiring a senior, hands-on Principal AI Applications & Cloud Engineer to build and operate AI-powered applications, agentic automation systems, integrations, and the AWS infrastructure underneath them.

You'll work across full-stack product development, AI agent design, cloud operations, and customer delivery. This is an early technical leadership role: you'll help define the engineering foundation of a growing AI automation company while shipping systems that solve real problems for real customers, usually in weeks rather than quarters.

What You'll Do

Build full-stack web applications, customer portals, internal tools, dashboards, APIs, and integrations
Design and implement AI agents and automation workflows that retrieve information, call tools, update systems, create tasks, draft responses, and route work for human approval
Build document-processing, knowledge-access, case-management, and decision-support solutions
Design the human-in-the-loop boundary deliberately — what AI may complete, what it prepares for approval, what stays fully human — with permissions, source evidence, audit history, and fallback behavior built in
Design, deploy, secure, and operate AWS infrastructure for production workloads, including multi-tenant deployments and isolated per-customer environments where a security review calls for it
Integrate with CRMs, finance systems, communication platforms, file storage, and legacy line-of-business systems, including the ugly ones
Establish the engineering practices that make managed operations sustainable: source control, testing, CI/CD, monitoring, logging, backups, and documentation
Work directly with leadership and customers to understand workflows, find the bottlenecks, and translate operational needs into production-ready systems
Support customer security reviews and questionnaires
Evaluate emerging AI tools, models, agent frameworks, and cloud services on real customer value, reliability, security, and cost

Qualifications

Significant experience building and supporting production web applications, not just prototypes
Strong full-stack development: modern frontend frameworks, backend services, APIs, databases, authentication, and integrations
Hands-on AWS experience deploying and operating cloud-hosted applications
Production experience with LLM APIs, AI agents, tool calling, retrieval, document processing, or related AI application patterns — including the unglamorous parts: error handling, cost, latency, and evaluation
Working understanding of secure system design, access controls, logging, monitoring, and production operations
Ability to work independently, communicate clearly with non-technical stakeholders, and make sound technical decisions without a committee
A practical, product-minded approach to solving customer problems
Able to pass a background check; some customer environments require it

Preferred Experience

AWS services such as Lambda, ECS, API Gateway, RDS, DynamoDB, S3, IAM, CloudWatch, and Bedrock
Infrastructure as code (Terraform, CDK, or CloudFormation) and containerized deployments
AI agent orchestration, human-in-the-loop workflows, evaluations, guardrails, or AI observability
Serving government, healthcare, finance, legal, or other regulated organizations; exposure to CJIS, HIPAA, StateRAMP, or SOC 2 requirements
Integrating legacy systems and untangling high-friction operational workflows
SaaS products, managed services, or multi-tenant application architecture
SSO/SAML/OIDC integration

Why Limestone

This is not a generic software development role. You'll build the applications, AI systems, and cloud platforms that help organizations cut manual work, improve visibility, and operate more effectively — and you'll stay close enough to the customer to see whether it worked.

The people who do well here would rather ship a working pilot in three weeks than a perfect design document in three months. We keep scope tight, we own what we build all the way into production, and everyone wears more than one hat. If you've been frustrated watching good software take two years to reach the people who needed it, we're building the opposite of that.

You'll have meaningful technical ownership, a flexible outcome-focused work environment, and an uncapped incentive opportunity tied to the company's growth.

Pay: $75,000.00 - $100,000.00 per year

Work Location: Hybrid remote in Maryville, TN 37804

Job description