Senior Backend Engineer — Data & API Systems (Python/FastAPI)

Base-2 Solutions, LLC; Washington (District of Columbia); On-site; USD 120,000 - 160,000; Full time

Job summary

Base-2 Solutions, LLC seeks a Software Engineer Level 4 to develop, maintain, and enhance complex software systems for mission-focused environments. The role centers on backend development, data engineering, and API development, building scalable systems with Python and FastAPI, and managing PostgreSQL databases.

You will support high-performance integrations across data-sensitive systems. The ideal candidate brings extensive experience in backend development, data engineering, and API design,

Qualifications

• Active TS/SCI clearance with CI polygraph is required.
• Backend development experience.
• 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 and FastAPI.
• Proficiency in PostgreSQL.
• Proficiency in Elasticsearch.

Responsibilities

• Develop, maintain, and enhance complex and diverse software systems including analytics, large data sets, real-time systems and MIS.
• Provide input to software component design including trade-offs and requirements synthesis from system level.a0
• Design, implement, and integrate software applications or perform software engineering tasks.
• Utilize software engineering methodologies appropriate to the development environment.
• Ensure efficient delivery of software engineering capabilities using industry standards and repeatable processes.
• Mitigate risks, control costs and schedule variance for large-scale projects.
• Review and test software components for adherence to design requirements and document results.

Skills

Backend development

Python

FastAPI

Data engineering

API development

PostgreSQL

Elasticsearch

SQL indexing

Education

Bachelor's degree

Master's degree

PhD

Associates degree

High School Diploma

Tools

PostgreSQL

Elasticsearch

Job description

Base-2 Solutions, LLC seeks a Software Engineer Level 4 to develop, maintain, and enhance complex software systems for mission-focused environments. The role centers on backend development, data engineering, and API development, building scalable systems with Python and FastAPI, and managing PostgreSQL databases.

You will support high-performance integrations across data-sensitive systems. The ideal candidate brings extensive experience in backend development, data engineering, and API design,