Software Engineer Level 5

Base-2 Solutions; Reston (VA); On-site; USD 120,000 - 180,000; Full time

Job summary

Base-2 Solutions is seeking a Software Engineer Level 5 to develop, maintain, and enhance complex software systems supporting mission-focused environments. This role centers on backend development, data engineering, and API development using Python and FastAPI, with PostgreSQL database design and high-performance integrations.

The position requires active TS/SCI with CI Polygraph and experience building scalable systems for high-speed, data-sensitive environments.

Qualifications

• Active TS/SCI with CI Polygraph.
• Backend developer experience.
• Data engineering and API development experience.
• Experience with Python and FastAPI.
• PostgreSQL database design with indexing.
• Proficiency in Python, FastAPI, PostgreSQL, Elasticsearch.
• Experience building high-performance API connections in mission-critical systems.

Responsibilities

• Develop, maintain, and enhance complex software systems supporting analytics and real-time processing.
• Design and implement software components with system-level requirements.
• Integrate applications and perform software engineering tasks.
• Apply methodologies ensuring repeatable, standards-compliant delivery.
• Mitigate risks, control costs, and manage large-scale projects.
• Review and test components, documenting results to ensure quality.

Skills

Backend development

Data engineering

API development

Python

FastAPI

PostgreSQL

Elasticsearch

Education

Bachelor's Degree

Master's Degree

PhD

Associates Degree

High School Diploma/ GED

Tools

Python

FastAPI

PostgreSQL

Elasticsearch

Job description

Position Summary

Base-2 Solutions is seeking a Software Engineer Level 5 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.

Essential Duties and Responsibilities

• 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.

Required Qualifications

• Active TS/SCI with CI Polygraph.
• 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.

Preferred Qualifications

• 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.

Required Education and Experience Equivalency

• High School Diploma/ GED with 18 years of experience.
• Associates Degree with 16 years of experience.
• Bachelors' Degree with 14 years of experience.
• Masters' Degree with 12 years of experience.
• PhD with 10 years of experience.

Required Certifications

• None specified.

Required Security Clearance

• Active TS/SCI with CI Polygraph.