Backend Software Engineer – High-Impact API & Data

Leidos; Tucson (AZ); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is hiring a Backend Software Engineer to support a high-visibility, data‑driven application used across the organization for analytics and reporting. You’ll help build and maintain core backend services, develop RESTful APIs, and contribute to system enhancements within a Linux‑based environment.

The role offers opportunities to work with distributed teams across multiple locations, focusing on reliability, performance, and data accuracy for mission stakeholders.

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or a related field with 4–8 years of experience.
• US Citizenship
• Active TS/SCI with the ability to successfully pass a Polygraph
• Professional experience developing object‑oriented applications in Java or Python
• Hands‑on experience building and maintaining RESTful APIs
• Basic to moderate experience with SQL capability, including writing queries and working with relational databases
• Working knowledge of Linux‑based environments
• Ability to work independently on defined tasks within established technical frameworks and deliver reliable results

Responsibilities

• Backend Development: Design, develop, test, and maintain backend application components using Java or Python
• REST API Development: Develop and maintain RESTful services to support application functionality and system integrations
• Object‑Oriented Programming: Apply object‑oriented design principles to build scalable and maintainable systems
• Database Development: Write and modify SQL queries to support application functionality and data retrieval
• Data Source Collaboration: Collaborate with internal and external teams to understand data sources, formats, and access methods, and support integration into backend systems
• Linux Environments: Develop and troubleshoot applications within Linux-based environments
• Data Processing & Business Logic: Implement backend logic for data transformation, processing, and system workflows
• Bug Fixing & Enhancements: Identify, debug, and resolve application‑level defects and performance issues
• Code Quality: Follow coding standards, participate in code reviews, and support documentation efforts

Skills

Java

Python

REST APIs

SQL

Linux

Independent work

Education

CS/SE degree

Job description

Leidos is hiring a Backend Software Engineer to support a high-visibility, data‑driven application used across the organization for analytics and reporting. You’ll help build and maintain core backend services, develop RESTful APIs, and contribute to system enhancements within a Linux‑based environment.

The role offers opportunities to work with distributed teams across multiple locations, focusing on reliability, performance, and data accuracy for mission stakeholders.