Software Engineer - Backend Solutions

Cornerstone Defense LLC; Chantilly (VA); On-site; USD 80,000 - 120,000; Full time

Job summary

Cornerstone Defense LLC is looking for a passionate Software Engineer to design and develop modern, scalable backend solutions for data ingestion and transformation. You will work collaboratively within an Agile team to build robust APIs and data pipelines.

The ideal candidate holds a Bachelor's Degree in Computer Science or a related field and has knowledge in NodeJS or Python, ETL workflows, and NoSQL datastores. This role offers a dynamic work environment focused on innovation and process improvement.

Qualifications

• Bachelor’s Degree in Computer Science, Electrical or Computer Engineering or related technical discipline.
• Knowledge of NodeJS or Python.
• Strong understanding of APIs, microservices, and distributed systems.

Responsibilities

• Design and develop scalable backend services and data ingestion solutions.
• Perform data modeling, data mapping, and large-scale file manipulation.
• Collaborate across disciplines in an Agile environment.

Skills

NodeJS or Python

APIs

Microservices

ETL workflows

NoSQL datastores

Education

Bachelor’s Degree in Computer Science or related field

Tools

Nifi

Elastic

RabbitMQ

MongoDB

Job description

Overview

Software Engineer – Backend Solutions

We’re looking for a Software Engineer who is passionate about building modern, scalable solutions for ingesting and transforming data. This role blends back-end engineering with data pipeline development and is perfect for someone who enjoys designing modular services and bringing structure to complex data environments.

As part of our Agile team, you’ll design and develop software products and services that efficiently ingest, process, and manage data from a variety of sources. You’ll play a key role in building robust, reusable APIs and data pipelines that support critical operational and analytical systems.

Key Responsibilities

• Design and develop scalable backend services and data ingestion solutions.
• Perform data modeling, data mapping, and large-scale file manipulation.
• Collaborate across disciplines in an Agile environment with minimal supervision.
• Drive innovation and process improvement with a hands-on development approach.
• Optimize application for maximum speed and scalability.

Qualifications

• Bachelor’s Degree in Computer Science, Electrical or Computer Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.

Required Knowledge/Skills

• Knowledge of NodeJS or Python
• Strong understanding of APIs, microservices, and distributed systems.
• Solid experience in building and maintaining ETL workflows and data pipelines.
• Excellent organizational, coordination, interpersonal and team building skills.
• Familiarization with NoSQL datastores.

Desired Knowledge/Skills

• NiFi experience
• Hands-on experience working with Elastic and RabbitMQ
• NoSQL experience (i.e. MongoDB)
• Distributed architecture creation
• Cloud based architecture creation or experience