Mid-Level Backend Software Engineer

If youve been building your skills in backend development objectoriented programming and missiondriven engineering and youre ready for work that actually moves the needle this is the kind of opportunity cleared engineers pursue when they want to grow while making real impact. If you take pride in your craft enjoy solving meaningful technical problems and want your work to support a mission with visibility at senior levels youll thrive here.

Were hiring a Backend Software Engineer to support a highvisibility datadriven application used across the organization for analytics and reporting. Youll help build and maintain core backend services develop RESTful APIs support datadriven functionality and contribute to ongoing system enhancements within a Linuxbased environment. Your work will directly support system reliability performance and data accuracy for mission stakeholders. Our primary development team operates out of Gaithersburg MD but we also support onsite engineers in Alexandria VA; Chantilly VA; Aurora CO; St. Louis MO; and Tucson AZ giving top talent multiple paths to join the mission.

And while the requisition requirements may seem standard fare the position is not; as it will join a high performing team that is changing the way digital engineering and mission operations intelligence is enabled for our customer.

Why This Role Stands Out

• High Impact: Your work supports a widely used application that drives realtime decisionmaking
• High Visibility: Collaborate with engineering teams and mission stakeholders across programs
• Career Growth: Build deeper expertise in backend development API design and scalable systems
• Challenging Work: Contribute to complex backend features not routine maintenance tasks

Essential 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

Basic Qualifications

• Bachelors degree in Computer Science Software Engineering or a related field with 48 years of experience; or a Masters degree with 26 years of experience
• US Citizenship
• Active TS/SCI with the ability to successfully pass a Polygraph
• Professional experience developing objectoriented applications in Java or Python
• Handson experience building and maintaining RESTful APIs
• Basic to moderate experience with SQL capability including writing queries and working with relational databases
• Working knowledge of Linuxbased environments
• Ability to work independently on defined tasks within established technical frameworks and deliver reliable results

Preferred Qualifications

• Experience withApache Airflow or similar workflow orchestration technologies
• Experience withSpring Boot Django or similar backend frameworks
• Exposure toCI/CD pipelines (GitLab Jenkins etc.)
• Familiarity withcontainerization (Docker OpenShift)
• Exposure tocloud environments (AWS or Azure)
• Experience working inAgile development environments

#MARU

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

Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline onlyand 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.