Senior Backend Engineer (TS/SCI) — Data & API Systems

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

Job summary

Base-2 Solutions, LLC is seeking a Software Engineer Level 4 to develop backend systems, data pipelines, and APIs using Python and FastAPI. The role centers on scalable PostgreSQL databases and high-performance integrations within mission-critical, data-sensitive environments.

You will contribute to design decisions, implement robust software engineering practices, and work on complex analytics and real-time data processing. A TS/SCI with CI Polygraph is required.

Qualifications

• Active TS/SCI with CI Polygraph.
• 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.

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.

Skills

Backend development

Data engineering

API development

Python

FastAPI

PostgreSQL

Elasticsearch

High-performance APIs

Education

Bachelor's degree

Master's degree

PhD

Associate's degree

High School Diploma

Tools

Git

Job description

Base-2 Solutions, LLC is seeking a Software Engineer Level 4 to develop backend systems, data pipelines, and APIs using Python and FastAPI. The role centers on scalable PostgreSQL databases and high-performance integrations within mission-critical, data-sensitive environments.

You will contribute to design decisions, implement robust software engineering practices, and work on complex analytics and real-time data processing. A TS/SCI with CI Polygraph is required.