Full Stack Engineer Intern Jobs in Boulder, CO (NOW HIRING)

Who We Are

AIR Communities is a Multifamily Real Estate Operator headquartered in Denver, CO. We are one of the country's largest owners and operators of multifamily housing, managing high-quality properties in most major markets. At AIR, we value integrity, respect, collaboration, customer focus, and performance. These values are brought to life by our teammates, who are ultimately responsible for our success. When you join our team, you'll work alongside the most dedicated professionals in the industry and open the door to unlimited career opportunities.

AIR is preparing for growth in 2026! We are adding to several departments in our Denver Headquarters with our anticipated growth. Are you ready to take on a new challenge? 

Where You Will Work 

Our corporate office is located in the Denver Tech Center. Our office spans the top two floors of the building and features expansive views of the mountains and the downtown skyline. 

AIR values relationships and the benefits from working side by side with teammates, therefore this position will be in-office 5 days a week to support operations.

Job Description

We are seeking an experienced Lead Full‑Stack Engineer to join our dynamic data team. The ideal candidate is skilled in designing and delivering scalable, high‑quality applications across modern front‑end and back‑end technologies. In this role, you will guide the development of innovative solutions for the multifamily industry, helping create intuitive, high‑performance products that empower users and drive business growth.

What you will do:

• Design and develop scalable applications using .NET and modern front‑end frameworks.
• Build and optimize RESTful APIs and microservices for seamless integration across front-end applications.
• Work with relational databases, ensuring strong performance and data integrity.
• Implement secure authentication and authorization patterns.
• Develop responsive, interactive user interfaces using React.js and modern front‑end patterns.
• Ensure cross-browser compatibility and optimize front-end performance for a seamless user experience.
• Collaborate with UX/UI designers to translate wireframes into functional, user‑centric components.
• Integrate front‑end and back‑end components to deliver cohesive, end‑to‑end solutions.
• Diagnose and resolve issues across the full stack to maintain application reliability.
• Write clean, maintainable, well‑documented code that aligns with engineering best practices and coding standards.
• Participate in Agile ceremonies and change‑control processes, including sprint planning, daily stand‑ups, retrospectives, and change reviews.
• Work closely with product managers, designers, and engineers to deliver features on time and within scope.
• Conduct and contribute to code reviews to uphold quality standards and support knowledge sharing.
• Optimize applications for scalability, performance, and security.
• Evaluate and recommend new tools, frameworks, and development methodologies.
• Provide technical leadership by shaping system architecture, guiding design decisions, and ensuring scalability, performance, and security across services.
• Establish coding standards and engineering best practices while mentoring other developers and leading technical discussions and code reviews.
• Break down complex technical work into actionable tasks and serve as the primary technical point of contact for cross-team initiatives.
• Partner with product, UX, QA, and DevOps to translate business requirements into robust technical solutions, contributing to project planning and managing technical risks.

What you should have:

• Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent experience.
• 10–12+ years of professional full‑stack development experience with C# and .NET.
• Strong proficiency in React.js and JavaScript/TypeScript.
• Expertise with ASP.NET Core, Entity Framework, and RESTful API development.
• Solid experience with relational databases (e.g., SQL Server, Postgres) and writing efficient SQL queries.

• Experience with modern front‑end build and packaging tools.
• Experience building and hosting application on cloud platforms (Azure, AWS, or GCP).
• DevOps mindset with experience building CI/CD pipelines and using version control systems such as Git.
• Strong analytical and troubleshooting skills, including experience with root-cause analysis.

• Experience implementing and maintaining application security best practices.
• Awareness of common application security principles and secure data handling practices, including working with sensitive or regulated data such as PII.practices.
• Familiarity with SAST, SCA, and DAST tools for code security scanning.
• Proven experience providing technical leadership, including shaping system architecture and guiding design decisions with a focus on scalability, performance, and security.
• Demonstrated ability to mentor engineers, establish coding standards, and lead technical discussions and code reviews to drive engineering excellence.
• Experience collaborating cross-functionally (working with product UX, QA, and DevOps) to translate business requirements into technical solutions, break down complex work, and manage technical risks.

Nice to have:

• Experience with Azure Service Fabric or similar microservices platforms.
• Familiarity with cloud deployment strategies and CI/CD orchestration.
• Knowledge of unit, integration, and end‑to‑end testing best practices.
• Understanding of when and how to use NoSQL databases within application architecture.
• Experience with containerization tools.

Required Soft Skills:

• Strong problem‑solving abilities and high attention to detail.
• Clear, effective communication and a collaborative mindset.
• A growth-oriented mindset with enthusiasm for learning and adapting.

#PIQ 

AIR offers attractive total compensation packages designed to recognize and reward performance at the individual, team and company levels. We start with a competitive base salary and add bonus opportunities and benefit choices topped off with:

• Expected pay rate of $$130,000 - $155,000 plus annual bonus. You will be provided a pay rate that is in line with your skills and experience as they relate to the requirements of the job.
• 25% Discounted Rent at AIR communities (certain exclusions apply, and an application is required).
• Medical, dental, vision, and life insurance options available. HSA with company sponsored contributions, FSA (traditional and dependent care FSA).
• Short and long-term disability paid by the company.
• 401(K) plus company contributions.
• Paid Vacation, 14 Paid Holidays, and Paid Sick Time.
• Tuition Assistance Program.
• Commuter Benefits and Pet-Insurance.
• Up to 100% Reimbursement on Professional Certification/Licensing for Job Related Curriculums.
• Paid parental leave of up to 16 weeks, following the birth or adoption of a child.
• Consumer discounts from various products and services including travel planning, wireless phones, health and fitness, home appliances, and more.
• 15 hours of paid time annually to give-back to your community.
• Opportunities for professional development and career growth including realistic job previews, in person and virtual leadership training, and performance improvement courses.

Application Deadline:  The initial deadline for applications is 5/11/2026. Applications submitted after this date may still be considered on a rolling basis until the position/program is filled. We encourage all interested candidates to apply as early as possible. If a final decision has not been made by the initial deadline, subsequent applications will be reviewed as they are received.

Candidates extended an offer will be required to undergo pre-employment screening that includes checking references, a four-panel drug screening that excludes marijuana testing, employment verification & criminal background check.

AIR values diversity and provides equal employment opportunities to all employees and applicants for employment. AIR prohibits 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.