Jr. Software Engineer Intern

Leidos LLC; Tucson (AZ); On-site; USD 48,000 - 87,000; Full time

Job summary

Leidos is looking for a Junior Software Engineer Intern to join a high performing agile team in Tucson, focusing on full stack development of user interfaces, RESTful services, APIs, database scripting, AWS Cloud infrastructure, and integration of micro-services.

The intern will be mentored by Senior Staff through program increment planning, industry standards, and related development activities, while applying object oriented programming principles to ensure modular, efficient, and reusable

Qualifications

• Pursuing a Bachelor's degree in Computer Science, Mathematics, or a related field.
• Familiarity with web application development and design patterns.
• Experience with Java, JavaScript/TypeScript, Python, C++, and SQL is preferred.
• Familiarity with Git and modern frameworks (React, Django, Spring Boot, NodeJS) is a plus.

Responsibilities

• Develop and contribute to full-stack software with an agile team.
• Receive mentorship and apply software engineering principles to produce reliable, modular code.
• Analyze complex requirements and translate them into design and implementation.
• Assist in code reviews and documentation to ensure maintainability.

Skills

Java

JavaScript

Typescript

Python

C++

SQL

GIT

Problem solving

US Citizenship

Education

Bachelor's degree in Computer Science or Mathematics

Tools

React

Svelte

Vue

Django

SpringBoot

Flask

FastAPI

NodeJS

Job description

Leidos is looking for a Junior Software Engineer Intern to join a high performing agile team to support a nationally significant and fast-paced management programs. The Leidos team is focusing on full stack development of user interfaces, restful services, APIs, database scripting, AWS Cloud infrastructure, and integration of micro-services.

Primary Responsibilities

• The Junior Software Engineer Intern needs to be local to Tucson and will be responsible for software development activities both individually and as a member of the an agile team.
• The intern will be mentored by Senior Staff through program increment planning, industry standards, and related development activities.
• The individual will analyze and study complex system requirements, use design software tools, provide support using formal specifications, data flow diagrams, and other accepted design techniques with the help of other team members.
• The individual will mentored through software engineering principles and standards to ensure that developed code is modifiable, efficient, reliable, understandable, fault tolerant, modular and reusable.
• The individual will be assigned various tasks across the program's full stack to help gain experience, knowledge and application of object orientating programming languages.

Basic Qualifications

• Working towards a Bachelors' degree in Computer Science, Mathematics, or similar discipline.
• Knowledge of, exposure and/or experience working with software design patterns and Web Application Development.
• Knowledge of, exposure and/or experience using some of the following Programming Languages and tools: Java, JavaScript, Typescript, Python, C++, SQL
• Familiarity with one or more of the following Development Frameworks: React, Svelte, Vue, Django, SpringBoot, Flask, FastAPI, NodeJS
• Self-motivated to learn and apply themselves to problem solving
• Familiarity with GIT standards
• Must be able to obtain and maintain a TS/SCI with Polygraph clearance
• US Citizenship required
• Must be able to commute to or is located in the Tucson area

Preferred Qualifications

• Some experience developing front end user interface frameworks either through side projects or relevant work experience.
• Familiarity with working in an agile environment.
• Familiarity with working on Full Stack Development.

You're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting: September 21, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range: Pay Range $48,100.00 - $86,950.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.