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# Software Engineer Level 4

- **Company:** Base-2 Solutions, LLC
- **Location:** Norfolk, VA, United States
- **Salary:** $10,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Algorithm Design, Software Applications, Big Data, Code Reuse, Information Engineering, Elasticsearch, Python (Programming Language), PostgreSQL, Software Engineering, Software Systems, SQL Databases, Real Time Systems, Database Optimization, Backend, Fastapi, Api Design
- **Published:** July 20, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9041120/software-engineer-level-4

## About the Role

* Demonstrated experience as a backend developer.
 * Demonstrated experience in data engineering and API development.
 * Experience building scalable systems with Python and FastAPI.
 * Experience designing and managing PostgreSQL databases with efficient SQL and indexing strategies.
 * Proficiency in Python.
 * Proficiency in FastAPI.
 * Proficiency in PostgreSQL.
 * Proficiency in Elasticsearch.
 * Experience building high-performance API connections between high-speed, high-volume, mission-critical, data-sensitive systems.

 * Experience supporting processing-intensive analytics environments.
 * Experience working with extremely large data sets.
 * Experience supporting real-time systems.
 * Experience contributing to software design decisions involving software reuse, COTS/GOTS, and system-to-component requirements analysis.

Education Years of Experience High School Diploma/GED 13 Associates Degree 11 Bachelors' Degree 9 Masters' Degree 7 PhD 5

 * None specified.

 * Active TS/SCI with CI Polygraph.

## Description

Base-2 Solutions is seeking a Software Engineer Level 4 to develop, maintain, and enhance complex and diverse software systems supporting mission-focused environments. This role is centered on backend development, data engineering, and API development, with emphasis on building scalable systems using Python and FastAPI, designing and managing PostgreSQL databases, and supporting high-performance integrations across high-speed, high-volume, mission-critical, data-sensitive systems.

 * Develop, maintain, and enhance complex and diverse software systems, including processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems, based upon documented requirements.
 * Provide specific input to software component design, including hardware/software trade-offs, software reuse, use of COTS/GOTS in place of new development, and requirements analysis and synthesis from the system level to individual software components.
 * Design, implement, and integrate software applications or perform software engineering tasks.
 * Utilize software engineering and design methodologies appropriate to the development, integration, and production environment.
 * Ensure efficient delivery of software engineering capabilities using industry standards and repeatable processes.
 * Mitigate risks, control costs and schedule variance, and effectively manage large-scale, integrated software projects.
 * Review and test software components for adherence to design requirements and document test results.


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