Jr. Software Engineer Intern

Location: Tucson, AZ

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 be 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

If 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.