JR Software Engineer 2

Probity Inc.; Chantilly (VA); On-site; USD 150,000 - 190,000; Full time

Job summary

Probity Inc. seeks an experienced software lead to design and deliver enterprise-grade applications for mission-critical systems. The role involves shaping technical approaches, building scalable backends in Python, and delivering robust RESTful APIs for distributed components.

You will work across development lifecycle, participate in design reviews, and ensure security, performance, and maintainability objectives are met within an Agile team. Top Secret/SCI with Polygraph clearance is required.

Qualifications

• Bachelor's degree or equivalent in a technical discipline.
• ~10+ years of professional experience delivering enterprise software solutions.
• Advanced proficiency in Python for backend development.
• Experience with Angular or comparable front-end frameworks.

Responsibilities

• Lead design and development of scalable full-stack applications from requirements through deployment and sustainment.
• Architect and implement backend services using Python and modern frameworks.
• Develop and integrate RESTful APIs for system interoperability.
• Design and optimize relational databases focusing on performance and maintainability.
• Collaborate with architects, engineers, and stakeholders to shape technical approaches.

Skills

Python

Angular

REST APIs

SQL

Linux

Git

CI/CD

Agile

Security

Education

Bachelor's degree in Computer Science/Engineering or related

Tools

Oracle

PostgreSQL

SQL Server

MySQL

Linux

Job description

PLEASE NOTE: This position requires an ACTIVE Top Secret/SCI Clearance with Polygraph. To be considered for this position, you MUST have an ACTIVE Clearance Level of Top Secret/SCI with Polygraph

Position Code: 20-SO0828-2

Key Responsibilities

• Lead the design and development of scalable full-stack applications from initial requirements through deployment and sustainment.
• Architect and implement backend services using Python and modern application frameworks.
• Develop and integrate RESTful APIs to support system interoperability, data exchange, and distributed application functionality.
• Design and optimize relational database solutions with a focus on performance, scalability, and maintainability.
• Partner with architects, engineers, and mission stakeholders to evaluate requirements, shape technical approaches, and deliver effective solutions.
• Diagnose complex software defects, integration challenges, and performance issues, implementing solutions that improve system reliability.
• Provide technical input through design reviews, peer code reviews, and engineering discussions while promoting sound development practices.
• Contribute to technical planning, estimation, testing, deployment, and long-term application sustainment.
• Support Agile delivery activities and help drive continuous improvement across development processes and engineering practices.
• Ensure application solutions meet established security, performance, scalability, and maintainability objectives.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline (or equivalent combination of education and experience).
• Approximately 10+ years of professional experience designing and delivering enterprise software solutions.
• Advanced proficiency in Python for backend and application development.
• Expertise with Angular or comparable modern front-end frameworks.
• Demonstrated ability to design, develop, and integrate RESTful APIs within distributed applications.
• Hands-on knowledge of Oracle databases, including SQL development, application integration, and data access.
• Background working with relational database technologies such as PostgreSQL, SQL Server, or MySQL.
• Proven ability to develop and maintain applications within Linux/Unix environments.
• Solid understanding of software engineering practices, including version control, automated testing, peer reviews, and secure development principles.
• Familiarity with Agile methodologies and experience contributing across the full software development lifecycle.
• Strong analytical, troubleshooting, and technical problem-solving capabilities.

Desired Qualifications

• Hands-on development of APIs using FastAPI.
• Working knowledge of SQLAlchemy or comparable ORM technologies for application-todatabase integration.
• Background designing and deploying cloud-based applications, particularly within AWS environments.
• Understanding of CI/CD pipelines, DevOps practices, and automated software delivery.
• Exposure to Docker, Kubernetes, microservices, and other distributed application technologies.
• Proficiency with development and infrastructure tools such as Git, Jenkins, Terraform, or similar platforms.
• Knowledge of Elasticsearch, OpenSearch, or comparable search and analytics technologies.
• Demonstrated ability to provide technical direction, mentor fellow engineers, or contribute to development standards.
• Previous support of Intelligence Community or Department of Defense software development programs.