Senior Backend Engineer — TS/SCI Eligible (Gov't)

VISTA Technology Services Inc.; Springfield (VA); On-site; USD 100,000 - 145,000; Full time

Job summary

VISTA Technology Services, Inc. is seeking a Back-End Developer to design, build, and maintain server-side applications and APIs for critical government programs in Springfield, VA.

The role requires 8+ years of back-end experience with Python, Java, C#, Ruby, and frameworks such as Django, Spring, and .NET. Active TS with SCI eligibility is required for access to classified environments.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field.
• Minimum of 8 years of back-end development experience.
• Expertise in Python, Java, C#, Ruby, or Docker, Kubernetes.
• Knowledge of server-side frameworks (Django, Spring, .NET).
• Database design and optimization knowledge.
• Experience with API development and integration.
• Understanding of security best practices for classified environments.
• Experience with authentication and authorization systems (e.g., MongoDB, Cassandra).
• Experience with API design and development (REST, GraphQL).
• Proficiency with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes).
• Strong understanding of SQL and NoSQL databases.
• Active TS with SCI eligibility.

Responsibilities

• Design, develop, and maintain server-side applications and APIs.
• Build and manage databases; ensure data integrity and security.
• Design and optimize database queries and data access layers.
• Integrate with government authentication systems and security frameworks.
• Write clean, well-documented code and lead code reviews.

Skills

Python

Java

C#

Ruby

Docker

Kubernetes

REST API

GraphQL

Education

Bachelor's degree in Computer Science, Software Engineering, or related field

Tools

Django

Spring

.NET

MongoDB

Cassandra

PostgreSQL

MySQL

Kafka

RabbitMQ

Redis

Terraform

Ansible

AWS

Azure

GCP

Job description

VISTA Technology Services, Inc. is seeking a Back-End Developer to design, build, and maintain server-side applications and APIs for critical government programs in Springfield, VA.

The role requires 8+ years of back-end experience with Python, Java, C#, Ruby, and frameworks such as Django, Spring, and .NET. Active TS with SCI eligibility is required for access to classified environments.