Software Engineer Level 4

Base-2 Solutions; Washington (District of Columbia); On-site; USD 120,000 - 180,000; Full time

Job summary

Base-2 Solutions seeks a Software Engineer Level 4 to develop, maintain, and enhance complex backend systems for mission-focused environments. You will work on data engineering, API development, and scalable Python/FastAPI services, with PostgreSQL design and high-performance integrations.

The role emphasizes real-time analytics, large data sets, and robust software engineering practices, with a focus on reliability and security in critical operations. On-site in Washington, DC.

Qualifications

• Active TS/SCI with CI Polygraph.
• Backend developer experience.
• Data engineering and API development experience.
• Experience with Python and FastAPI.
• Experience designing and managing PostgreSQL databases with efficient SQL and indexing.
• Proficiency in Elasticsearch.
• Experience building high-performance API connections between high-speed, high-volume, mission-critical, data-sensitive systems.

Responsibilities

• Develop, maintain, and enhance complex and diverse software systems.
• Provide input to software component design and trade-offs.
• Design, implement, and integrate software applications or perform software engineering tasks.
• Utilize software engineering methodologies appropriate to development and production environments.
• Ensure efficient delivery of software engineering capabilities using industry standards.
• Mitigate risks and manage large-scale, integrated software projects.
• Review and test software components for adherence to design requirements and document test results.

Skills

Backend development

Data engineering

API development

Python

FastAPI

Elasticsearch

PostgreSQL

Education

High School Diploma/GED with 13 years of experience

Associates Degree with 11 years of experience

Bachelors' Degree with 9 years of experience

Masters' Degree with 7 years of experience

PhD with 5 years of experience

Tools

PostgreSQL

Job description

Position Summary

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.

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 13 years of experience.
• Associates Degree with 11 years of experience.
• Bachelors' Degree with 9 years of experience.
• Masters' Degree with 7 years of experience.
• PhD with 5 years of experience.

Required Certifications

• None specified.

Required Security Clearance

• Active TS/SCI with CI Polygraph.