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Software Engineer Internship Jobs in Rialto, CA (NOW HIRING)

Esri

Software Development Engineer

Redlands, CA

As a developer on our team, you will build software leveraging Esri's products and APIs for customers across a wide swathe of sectors. This is a unique opportunity to grow your technical skills while ...

Esri

Software Development Engineer

Redlands, CA

As a developer on our team, you will build software leveraging Esri's products and APIs for customers across a wide swathe of sectors. This is a unique opportunity to grow your technical skills while ...

Esri

Software Development Engineer

Redlands, CA · On-site

As a developer on our team, you will build software leveraging Esri's products and APIs for customers across a wide swathe of sectors. This is a unique opportunity to grow your technical skills while ...

CoStar Group

LoopNet - Software Engineer II

Orange, CA · On-site

$104K - $142K/yr

LoopNet - Software Engineer II CoStar Group (NASDAQ:CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P ...

CoStar Group

LoopNet - Senior Software Engineer

Orange, CA · On-site

$130K - $172K/yr

LoopNet - Senior Software Engineer CoStar Group (NASDAQ:CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S ...

CoStar Group

LoopNet - Senior Software Engineer

Orange, CA · On-site

$130K - $172K/yr

LoopNet - Senior Software Engineer CoStar Group (NASDAQ:CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S ...

NEOGOV

Lead Software Engineer

Ontario, CA · On-site

As an AI-First Lead Software Engineer, you will act as an orchestrator rather than a manual coder. You will leverage advanced AI tools like Claude Code as your primary interface to generate, test ...

Medium

Senior Software Engineer (IoT)

Ontario, CA · On-site

$140 - $205/hr

The Role Swiftly is looking for a Senior Software Engineer to join a cross‑functional product team enabling our transit agency customers to operate and manage on‑vehicle hardware systems and ...

CoStar Group

Matterport - Software Engineer I

Orange, CA · On-site

$119K - $154K/yr

Matterport - Software Engineer I Company Overview: CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces.

Esri

Sr. Software Development Engineer - Scala

Redlands, CA · On-site

$123K - $162K/yr

As a software engineer, you will design and develop software used by organizations across diverse industries as an important part of their daily work. You will be part of a talented cross-functional ...

Medium

Senior Software Engineer (Full-stack)

Ontario, CA · On-site

$130 - $210/hr

The Role Swiftly is looking for a Senior Software Engineer with experience building scalable cloud‑based services. You'll collaborate seamlessly with Product Managers, Designers and teammates to ...

Esri

Software Development Engineer II - Scala

Redlands, CA · On-site

$101K - $167K/yr

As a software engineer, you will design and develop software used by organizations across diverse industries as an important part of their daily work. You will be part of a talented cross-functional ...

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All JobsSoftware Engineer JobsSoftware Engineer Internship JobsSoftware Engineer Internship Jobs in Rialto, CA

Software Engineer Internship information

See Rialto, CA salary details

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How much do software engineer internship jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for software engineer internship in Rialto, CA is $25.49, according to ZipRecruiter salary data. Most workers in this role earn between $20.72 and $28.94 per hour, depending on experience, location, and employer.

What is a software engineer internship?

A Software Engineer Internship is a temporary position where students or entry-level professionals gain hands-on experience in software development. Interns typically work on real projects, write code, debug issues, and collaborate with engineering teams. The internship helps develop technical skills, knowledge of software development processes, and familiarity with industry tools. It also provides networking opportunities and can lead to full-time job offers.

What kinds of projects or tasks do software engineer interns typically work on during their internship?

Software Engineer Interns are often assigned to real-world projects that may include developing new features, fixing bugs, writing automated tests, or improving documentation. They usually work as part of a development team under the mentorship of experienced engineers, which allows them to participate in code reviews, agile meetings, and collaborative problem-solving sessions. The exact responsibilities may vary, but interns are regularly exposed to the full software development lifecycle and are encouraged to ask questions and contribute ideas. This hands-on experience not only builds technical skills but also prepares interns for full-time roles after graduation.

What are the key skills and qualifications needed to thrive in the software engineer internship position, and why are they important?

To thrive as a Software Engineer Intern, you need a solid understanding of programming languages (such as Java, Python, or C++), algorithms, data structures, and typically be pursuing or have a degree in computer science or a related field. Familiarity with version control systems like Git, integrated development environments (IDEs), and sometimes issue tracking tools is often expected. Strong problem-solving abilities, a willingness to learn, and effective communication are key soft skills that help interns excel in collaborative environments. These skills ensure interns can contribute meaningfully to technical projects, integrate well with engineering teams, and grow rapidly within the organization.

What are the most commonly searched types of Software Engineer jobs in Rialto, CA?

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For Software Engineer Internship jobs in Rialto, CA, the most frequently searched job titles are:

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Software Engineer Internship jobs near you
Infographic showing various Software Engineer Internship job openings in Rialto, CA as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 12% Part Time, and 4% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $53,013 per year, or $25.5 per hour.

LoopNet - Lead Software Engineer

CoStar Group

Orange, CA • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 25 days ago

Job description

LoopNet - Lead Software Engineer
Job Description
CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world's real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives.
We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We've continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.
LoopNet, the most popular place to find a space, is the #1 global commercial real estate marketplace. With more than 12 million global unique monthly visitors, LoopNet provides brokers, buyers and sellers with what they need to meet and make deals. LoopNet has established itself as the most effective and far-reaching digital marketplace for commercial real estate owners and brokers. We are not done yet! We continue to focus on driving expansion by increasing market share in the US and abroad, continuously innovating and enhancing the product and growing a powerhouse global team to reach our goals. Learn more about LoopNet.
Our team is seeking an accomplished Lead Software Engineer to join our team in supporting multiple software products and brands across the organization, such as www.LoopNet.com. You will have a direct impact on highly visible web applications that touch more than 10,000,000 users. You continuously learn emerging technologies and architecture advancements and apply the learnings to improve LoopNet's software products.
This position is located in Irvine, CA and offers 4 days a week onsite with 1 day work from home.
RESPONSIBILITIES:
  • Design and develop using Object Oriented design principles and software design patterns to attain high reusability and maintainability.
  • Deep knowledge and experience in writing unit testable software with C#
  • Develop an in-depth understanding of CoStar's product architecture and frameworks. Maintain and contribute to CoStar's product platform as necessary.
  • Develop database stored procedures and SQL scripts/ETL jobs that meet CoStar database standards to implement product requirements.
  • Participate and drive continuous improvement within CoStar's Agile/Scrum teams.
  • Build consensus among different teams working on software development projects.
  • Facilitate discussions among other .NET and database developers to exchange new ideas and improvements.
  • Continually evaluate emerging technologies to identify opportunities, trends and best practices that can be used to strengthen CoStar's technology platform and development practices.

REQUIRED QUALIFICATIONS:
  • Bachelor's Degree required from an accredited, not-for-profit university or college.
  • A track record of commitment to prior employers.
  • Working knowledge Vue, React or Angular in TypeScript
  • Experience with AWS S3, SQS, Dynamo, ElastiCache, Apache Kafka and Datadog
  • Leverage AI Coding Tools for development, refactoring, and debugging (Claude Code, GitHub Copilot or equivalent).
  • 9+ years of production development experience with C# .Net (or .Net Core)
  • A demonstrable track record of building and launching successful products and platforms
  • Deliver products that meet specifications and performance SLA
  • Deeply understand what drives the business for which you are building software

PREFERRED QUALIFICATIONS:
  • Experience in relational database design (MS SQL or MySQL) including performance tuning
  • Application security knowledge and experience with Git-based workflows.
  • Take an active role in mentoring developers with ability to build consensus
  • Experienced in unit, performance, and automation testing

What's in it for You:
When you join CoStar Group, you'll experience a collaborative and innovative culture working alongside the best and brightest to empower our people and customers to succeed.
We offer you generous compensation and performance-based incentives. CoStar Group also invests in your professional and academic growth with internal training, and tuition reimbursement.
Our benefits package includes (but is not limited to):
  • Comprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug
  • Life, legal, and supplementary insurance
  • Virtual and in person mental health counseling services for individuals and family
  • Commuter and parking benefits
  • 401(K) retirement plan with matching contributions
  • Employee stock purchase plan
  • Paid time off
  • Tuition reimbursement
  • On-site fitness center and/or reimbursed fitness center membership costs (location dependent), with yoga studio, Pelotons, personal training, group exercise classes
  • Access to CoStar Group's Employee Resource Groups
  • Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

This position offers a base salary range of $144,000-$222,000, based on relevant skills and experience and includes a generous benefits plan.
We welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position.
#LI-AV1
#LoopNet
CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing

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