Senior Full-Stack Engineer for Secure Mission-Critical Apps

ApplyMint; Chantilly (VA); On-site; USD 120,000 - 180,000; Full time

Job summary

NS2 Mission in Chantilly, VA is seeking a Software Engineer to design, build, and evolve secure, scalable applications for Intelligence Community customers. You will work across the full software lifecycle, delivering backend services and modern UIs using Python, RESTful APIs, Oracle and SQL databases, JavaScript, and Angular in a collaborative Agile environment.

Join a team that values sound development practices, code quality, and secure by design software.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Systems, or related technical discipline.
• Approximately 10+ years of professional experience designing and delivering enterprise software solutions.
• Advanced proficiency in Python for backend and application development.
• Strong command of JavaScript and modern front-end development practices.
• Expertise with Angular or comparable modern front-end frameworks.
• Demonstrated ability to design, develop, and integrate RESTful APIs within distributed applications.
• Hands-on knowledge of Oracle databases, including SQL development, application integration, and data access.
• Background working with relational database technologies such as PostgreSQL, SQL Server, or MySQL.
• Proven ability to develop and maintain applications within Linux/Unix environments.
• Solid understanding of software engineering practices, including version control, automated testing, peer reviews, and secure development principles.
• Familiarity with Agile methodologies and experience contributing across the full software development lifecycle.
• Strong analytical, troubleshooting, and technical problem-solving capabilities.

Responsibilities

• Lead the design and development of scalable full-stack applications from initial requirements through deployment and sustainment.
• Architect and implement backend services using Python and modern application frameworks.
• Develop and integrate RESTful APIs to support system interoperability, data exchange, and distributed application functionality.
• Design and optimize relational database solutions with a focus on performance, scalability, and maintainability.
• Build and enhance responsive user interfaces using JavaScript, Angular, and modern front-end development practices.
• Partner with architects, engineers, and mission stakeholders to evaluate requirements, shape technical approaches, and deliver effective solutions.
• Diagnose complex software defects, integration challenges, and performance issues, implementing solutions that improve system reliability.
• Provide technical input through design reviews, peer code reviews, and engineering discussions while promoting sound development practices.
• Contribute to technical planning, estimation, testing, deployment, and long-term application sustainment.
• Support Agile delivery activities and help drive continuous improvement across development processes and engineering practices.
• Ensure application solutions meet established security, performance, scalability, and maintainability objectives.

Skills

Python

JavaScript

Angular

RESTful APIs

Linux

SQL databases

Distributed systems

Code reviews

Agile

Problem solving

Education

Bachelor's degree

Tools

Git

Jenkins

Docker

Kubernetes

Terraform

FastAPI

SQLAlchemy

AWS

OpenSearch/Elasticsearch

Job description

NS2 Mission in Chantilly, VA is seeking a Software Engineer to design, build, and evolve secure, scalable applications for Intelligence Community customers. You will work across the full software lifecycle, delivering backend services and modern UIs using Python, RESTful APIs, Oracle and SQL databases, JavaScript, and Angular in a collaborative Agile environment.

Join a team that values sound development practices, code quality, and secure by design software.