Fastapi Developer Jobs in Phoenix, AZ (NOW HIRING)

Redefine the future of customer experiences. One conversation at a time.
At Nextiva, we're reimagining how businesses connect, bringing together customer experience and team collaboration on a single, conversation centric platform. Powered by AI, driven by human innovation.
Our culture is forward thinking, customer obsessed and built on the belief that meaningful connections drive better business outcomes. Whether it's through our signature Amazing Service®, the technology we create, or the experiences we cultivate, connection is at the core of who we are.
If you're ready to collaborate with incredible people, make an impact, and help businesses everywhere deliver truly amazing experiences, this is where you belong.
Location: This is an onsite role based at Nextiva's Scottsdale headquarters (9451 E. Via de Ventura, Scottsdale, AZ 85256). Working together onsite strengthens how we operate, enabling faster decisions, clearer communication, and stronger execution, so you can make a greater impact and move work forward with speed and clarity.
In-Office Expectation: This role is expected to work onsite five days per week, supporting a highly collaborative, in-person team environment.
Join Nextiva's AI Operations team for an action-packed spring focused on deploying generative AI and agentic AI to accelerate our internal processes. You'll prototype and operationalize AI workflows that boost pipeline, efficiency, and insight generation while gaining end-to-end exposure across every department.
This is a full-time, paid internship (January-April 2026). Applicants must be able to work onsite at our Scottsdale Headquarters Monday-Friday.
The Role
As an AI Engineer Intern, you will build and deploy AI agents and apps that eliminate internal bottlenecks. Expect a hands-on, scrappy environment where iterating fast and quantifying impact matter more than polish.
Key Responsibilities

• Build, ship, and scale AI workflows that reduce manual work.
• Deploy agentic automations for internal process monitoring and optimization.
• Prototype integrations that remove repetitive tasks.
• Document clear playbooks and train teammates on every solution shipped.

Requirements

• Strong proficiency in Python (FastAPI, PyTorch) and TypeScript with React, with the ability to build and scale robust full-stack applications.
• Rising senior or master's student in Software Engineering, Computer Science, or related field.
• Demonstrated scrappiness (startup, hackathon, or side-project experience).
• Experience with low/no-code automation platforms and internal tool development.
• Hands-on experience with fine-tuning and RAG systems, including vector embeddings, semantic search, chunking strategies, and retrieval optimization
• Analytical mind-set; able to quantify impact and iterate fast.
• Highly organized, action-oriented, and comfortable juggling multiple projects.
• Excellent communication and documentation skills; ability to collaborate with technical and non-technical stakeholders.

Nextiva DNA (Core Competencies)
Nextiva's most successful team members share common traits and behaviors:

• Drives Results: Action-oriented problem solvers who quickly bring clarity and simplicity to ambiguity, challenge the status quo, and lead meaningful change; celebrating wins to fuel momentum. They act swiftly and pragmatically, learning and improving as they go.
• Critical Thinker: Data-driven, forward-thinking individuals who identify key drivers, anticipate risks, and deliver clear recommendations. They confidently leverage AI and automation to reduce friction, improve decision-making, and focus on higher-value work.
• Right Attitude: Collaborative, competitive, and resilient team players who jump in to solve tough problems, learn from setbacks, and foster a culture of service, respect, and care for customers and teammates.

Total Rewards
Our Total Rewards offerings are designed to allow Nexties to take care of themselves and their families so they can be their best, in and out of the office.
Our compensation packages are tailored to each role and candidate's qualifications. We consider a wide range of factors, including skills, experience, training, and certifications, when determining compensation. We aim to offer competitive salaries or wages that reflect the value you bring to our team. Depending on the position, compensation may include base salary and/or hourly wages, incentives, or bonuses.

• Health: Multiple health plan options to suit your needs, including medical, dental, vision, and telemedicine coverage
• Insurance: Life, disability, and supplemental indemnity plans
• Work-Life Balance: Flexible Time Off for salaried employees, PTO for hourly employees, Paid Sick Time, Paid Parental Bonding Leave, and holiday pay
• Financial Security: 401(k) with company match, Health Savings Accounts with company contributions, Dependent Care FSA
• Wellness: Employee Assistance Program (EAP) and comprehensive wellness initiatives
• Growth: Access to ongoing learning and development opportunities and career advancement

At Nextiva, we're committed to supporting our employees' health, well-being, and professional growth. Join us and build a rewarding career!
Nextiva is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Nextiva participates in the E-Verify Program where and as required by law. For additional information about E-Verify visit USCIS.
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Founded in 2008, Nextiva has grown into a global leader trusted by over 100,000 businesses and 1M+ users worldwide. Headquartered in Scottsdale, Arizona, and with teams across the globe, we're the future of customer experience and team collaboration through our AI-powered, conversation-centric platform.
Want to see what life at Nextiva is all about? Connect with us on Instagram, Instagram MX, YouTube, LinkedIn, and the Nextiva Blog.