Senior Full-Stack Engineer: AI‑Driven & Secure Delivery

Lexicon, Inc.; Little Rock (AR); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Medical Insurance

HSA with Employer contributions

Dental Insurance

Vision Insurance

Group and Voluntary Life Insurance

Short Term/Long Term Disability

Critical Illness Plan

Employee Assistance Program

Paid Vacation

401(k) with Employer Match

ESOP

Job summary

Lexicon, Inc. is seeking a Senior Full-Stack Software Engineer to set the standard for software development across a fast-moving company.

This role will design, build, deploy, and support secure full-stack applications, APIs, integrations, automations, and internal tools while establishing practical engineering best practices and GitHub governance. The position emphasizes building scalable systems, CI/CD pipelines, and AI-assisted tooling, with mentorship for junior developers and collaboration

Qualifications

• Six or more years of professional software development experience.
• Strong full-stack proficiency in one or more modern ecosystems (TS/Node.js & React, Python, C#/.NET, or Java).
• Experience designing relational database schemas, migrations, and performant queries.
• Advanced Git and GitHub governance, including branching and release management.
• Experience building web apps, REST APIs, integrations, automation, and secure auth.
• Hands-on CI/CD, automated testing, secure coding, monitoring, and production troubleshooting.
• Practical experience with AI-assisted development tools and judgment to validate code.

Responsibilities

• Design, build, test, deploy, and support full-stack web applications, REST APIs, integrations, automations, and internal tools.
• Translate requirements into technical designs balancing performance, security, maintainability, and cost.
• Own GitHub repositories and engineering standards, including governance and reviews.
• Build and maintain CI/CD workflows with GitHub Actions and automated checks.
• Create reusable templates and standards for secure, consistent delivery.
• Utilize Lexicon approved AI tools for prototyping, coding, refactoring, debugging, testing, and documentation; verify output.
• Deploy and operate solutions on cloud/serverless/containers; monitor and respond to incidents.
• Lead and mentor level I developers through the SDLC and conduct technical reviews.
• Lead technical reviews, reduce debt, and explain risks to team and stakeholders.

Skills

6+ years exp

Full-stack TS/Node/React

Python

C#/.NET

Java

Relational DB design

GitHub governance

CI/CD pipelines

AI-assisted dev tools

Mentoring developers

Education

Bachelor's degree in CS/SE/IS

Tools

Cursor

Claude Code

GitHub Copilot

Microsoft Copilot

Replit

Codex

Grok

Job description

Lexicon, Inc. is seeking a Senior Full-Stack Software Engineer to set the standard for software development across a fast-moving company.

This role will design, build, deploy, and support secure full-stack applications, APIs, integrations, automations, and internal tools while establishing practical engineering best practices and GitHub governance. The position emphasizes building scalable systems, CI/CD pipelines, and AI-assisted tooling, with mentorship for junior developers and collaboration