Backend Developer with Security Clearance

Arion Systems, Inc.; Gaithersburg (MD); On-site; USD 120,000 - 180,000; Full time

Job summary

Arion Systems, Inc. in the United States seeks a Senior Backend Developer to lead architecture and development of complex enterprise software and backend services. You will set scalable patterns and mentor teams while collaborating with security, DevOps, and government stakeholders to deliver secure, high-availability systems.

This role requires DoD 8570 IAT Level II and Top Secret clearance, with extensive experience in Java, Python, and microservices, plus robust DevSecOps practices.

Qualifications

• 8–12 years of experience in backend or full-stack software development.
• Demonstrated experience architecting and delivering complex enterprise software systems.
• Advanced proficiency in one or more backend programming languages such as Java, Python, C#, Go, or JavaScript/TypeScript.
• Advanced experience with RESTful APIs, microservices, service-oriented architectures, and distributed systems.
• Strong experience with relational and NoSQL database technologies and data-access architectures.
• Demonstrated experience designing secure, scalable, and highly available backend systems.
• Strong knowledge of application security, secure coding, automated testing, performance engineering, and DevSecOps practices.
• Demonstrated ability to provide technical leadership, conduct architecture/code reviews, and mentor software developers.
• DoD 8570 IAT Level II certification required.
• Must hold Top Secret security clearance. Counterintelligence polygraph desired.

Responsibilities

• Architect and lead development of complex backend applications, APIs, services, and microservice architectures.
• Establish backend architecture, design patterns, coding standards, integration approaches, and development practices.
• Design scalable, resilient, secure, and highly available application services.
• Design service interfaces and APIs supporting integration across enterprise applications and systems.
• Architect data-access, database, caching, messaging, and event-driven solutions appropriate to system requirements.
• Develop and optimize complex application and database components.
• Design solutions incorporating relational and NoSQL databases, message queues, event streaming, and distributed processing where appropriate.
• Integrate backend applications with cloud services, identity platforms, enterprise systems, and external APIs.
• Establish application security architectures addressing authentication, authorization, encryption, secrets management, input validation, auditing, and secure communications.
• Lead performance engineering, scalability analysis, troubleshooting, and optimization of backend services.
• Establish automated testing and quality-assurance practices and integrate them into CI/CD pipelines.
• Lead resolution of complex production incidents and technical integration problems.
• Conduct architecture and code reviews and ensure implementation conforms to established technical and security standards.
• Mentor Mid-Level and junior developers and provide technical leadership across development teams.
• Collaborate with frontend developers, architects, DevOps engineers, cybersecurity personnel, database engineers, testers, and government stakeholders.
• Evaluate emerging development technologies, frameworks, and architectural approaches and recommend solutions based on mission requirements.
• Lead technical design sessions, architecture reviews, demonstrations, and implementation planning.
• Develop and maintain technical documentation describing system architecture, APIs, interfaces, data flows, and operational considerations.

Skills

Java

Python

C#

Go

JavaScript/TypeScript

Job description

Minimum Qualifications

The Senior Backend Developer provides technical leadership for the architecture and development of complex enterprise software systems and backend services. The developer establishes scalable and secure service architectures, leads resolution of complex technical problems, and provides technical direction to development teams.

Responsibilities

• Architect and lead development of complex backend applications, APIs, services, and microservice architectures.
• Establish backend architecture, design patterns, coding standards, integration approaches, and development practices.
• Design scalable, resilient, secure, and highly available application services.
• Design service interfaces and APIs supporting integration across enterprise applications and systems.
• Architect data-access, database, caching, messaging, and event-driven solutions appropriate to system requirements.
• Develop and optimize complex application and database components.
• Design solutions incorporating relational and NoSQL databases, message queues, event streaming, and distributed processing where appropriate.
• Integrate backend applications with cloud services, identity platforms, enterprise systems, and external APIs.
• Establish application security architectures addressing authentication, authorization, encryption, secrets management, input validation, auditing, and secure communications.
• Lead performance engineering, scalability analysis, troubleshooting, and optimization of backend services.
• Establish automated testing and quality-assurance practices and integrate them into CI/CD pipelines.
• Lead resolution of complex production incidents and technical integration problems.
• Conduct architecture and code reviews and ensure implementation conforms to established technical and security standards.
• Mentor Mid-Level and junior developers and provide technical leadership across development teams.
• Collaborate with frontend developers, architects, DevOps engineers, cybersecurity personnel, database engineers, testers, and government stakeholders.
• Evaluate emerging development technologies, frameworks, and architectural approaches and recommend solutions based on mission requirements.
• Lead technical design sessions, architecture reviews, demonstrations, and implementation planning.
• Develop and maintain technical documentation describing system architecture, APIs, interfaces, data flows, and operational considerations. Required Qualifications:
• 8–12 years of experience in backend or full-stack software development.
• Demonstrated experience architecting and delivering complex enterprise software systems.
• Advanced proficiency in one or more backend programming languages such as Java, Python, C#, Go, or JavaScript/TypeScript.
• Advanced experience with RESTful APIs, microservices, service-oriented architectures, and distributed systems.
• Strong experience with relational and NoSQL database technologies and data-access architectures.
• Demonstrated experience designing secure, scalable, and highly available backend systems.
• Strong knowledge of application security, secure coding, automated testing, performance engineering, and DevSecOps practices.
• Demonstrated ability to provide technical leadership, conduct architecture/code reviews, and mentor software developers.
• DoD 8570 IAT Level II certification required.
• Must hold Top Secret security clearance. Counterintelligence polygraph desired. About Arion Systems, Inc. Founded in 1985, Arion Systems, Inc. is an engineering and technical services company headquartered in Chantilly, Virginia. ASI applies engineering, scientific, analytical, and emerging technology expertise to help government and commercial customers solve challenging technical and operational problems. ASI's capabilities include systems engineering, project management, network solutions, custom software, operational analysis, advanced technology development, and other specialized engineering services. The company emphasizes mission accomplishment, technical quality, integrity, employee development, and challenging professional opportunities that expand employees' technical capabilities. Why Arion Systems At ASI, employees have the opportunity to contribute directly to technically challenging programs supporting important government and national security missions. ASI's culture emphasizes technical excellence, integrity, initiative, professional development, and the value of its people. For a developing systems engineer, this position offers the opportunity to build depth across enterprise IT systems while working alongside experienced engineering and technical professionals in a mission-oriented environment. Equal Employment Opportunity

Arion Systems, Inc. is an Equal Opportunity and affirmative action employer. Employment decisions are based on qualifications, merit, business requirements, and applicable contractual and legal requirements.