Full-Stack Developer

Dunhill Solutions; Bethesda (MD); Hybrid; USD 101,000 - 127,000; Full time

Job summary

Dunhill Solutions is seeking a Full-Stack Developer to lead development of enterprise software using C#, .NET, React, and REST APIs. You will design secure, scalable components and guide peers in an Agile/DevSecOps setting.

The role is hybrid in Bethesda, MD, requiring on-site presence two days per week, with emphasis on CI/CD, Azure deployments, and collaboration across cross-functional teams to deliver high-quality solutions.

Qualifications

• The candidate has 6+ years in software development for web applications and operations.
• Experience building full-stack apps with C#, .NET, React, JS, HTML, and REST APIs.
• Proven ability to design, develop, test, debug, document, and maintain complex enterprise apps.
• Strong CI/CD experience and secure software delivery practices.
• US Citizenship and ability to pass a federal background investigation.
• On-site in Bethesda, MD 2 days per week.

Responsibilities

• Lead design, development, testing, deployment, and maintenance of full-stack applications using .NET, C#, REST APIs, and React.
• Translate requirements into secure designs, reusable components, and implementation plans.
• Identify and resolve production defects, reduce technical debt, and improve performance.
• Design and maintain CI/CD pipelines including validation, testing, packaging, deployment, and release verification.
• Apply secure software practices, including code reviews, secrets management, and change-control processes.
• Leverage Azure to host, monitor, and scale enterprise applications with telemetry.
• Collaborate with architects, product owners, and delivery teams in Agile environments.
• Mentor junior developers and uphold engineering standards.

Skills

C#

React

.NET

RESTful APIs

Azure

CI/CD

Secure coding

Agile

Mentoring

Education

Bachelor's degree in Computer Science/Information Systems/Software Engineering or related field

Tools

Azure DevOps

Git

CI/CD tooling

Job description

Full-Stack Developer

Hybrid: Bethesda, MD -- on-site 2 days per week

The Full-Stack Developer leads the design, enhancement, operation, and maintenance of complex enterprise software applications supporting mission-critical business operations in a regulated client environment. This role translates functional requirements into secure, scalable, maintainable application components and technical designs using modern React and .NET technologies. The position provides technical leadership through peer reviews, complex defect resolution, performance optimization, mentoring, and adherence to Agile and DevSecOps delivery practices. The Full-Stack Developer also builds and supports automated delivery pipelines that validate, test, package, deploy, and monitor changes across controlled application environments.

Responsibilities:

• Lead the design, development, enhancement, testing, deployment, and maintenance of complex full-stack software applications using current .NET platforms, C#, RESTful APIs, and React-based user interfaces.
• Translate functional requirements into secure technical designs, reusable components, data-access patterns, interface contracts, development estimates, and implementation plans.
• Assess existing application architecture, isolate and resolve complex production defects, remediate technical debt, and improve application reliability, maintainability, performance, and response times.
• Design, implement, and maintain CI/CD pipelines that perform pull-request validation, linting, builds, unit and integration testing, artifact packaging, controlled deployment, and release verification.
• Apply secure software delivery practices, including code reviews, dependency and vulnerability remediation, secrets management, access controls, audit-ready change management, and automated quality gates.
• Use Azure cloud services to host, deploy, monitor, troubleshoot, and scale enterprise applications, leveraging application telemetry and monitoring data to support operational reliability.
• Collaborate with architects, business analysts, product owners, and cross-functional delivery teams to define requirements, resolve technical blockers, and deliver high-quality solutions in Agile environments.
• Mentor less-experienced developers, establish and reinforce engineering standards, conduct peer reviews, and provide technical guidance across application operations, maintenance, and modernization activities.

Requirements:

• Bachelor's degree in Computer Science, Information Systems, Software Engineering, or a related field, or equivalent relevant experience.
• Six or more years of progressively responsible experience in software development, web application development, and application operations and maintenance.
• Demonstrated experience designing, developing, testing, debugging, documenting, and maintaining full-stack web applications using C#, current .NET platforms, React, JavaScript, HTML, and RESTful APIs.
• Experience supporting existing enterprise applications, including production troubleshooting, root-cause analysis, defect remediation, performance optimization, and technical-debt reduction.
• Demonstrated ability to establish and maintain CI/CD pipelines supporting automated builds, code-quality checks, unit and integration testing, packaging, deployment and release validation.
• Working knowledge of secure software development practices, including code review, vulnerability remediation, secure secrets handling, access controls, dependency management, and change-management controls.
• US Citizenship and the ability to pass a federal background investigation in order to be granted access to sensitive information.
• Must be able to work on-site in Bethesda, MD 2 days per week.

Strongly preferred:

• Experience using Azure services, including Azure App Service, Azure Key Vault, application monitoring, telemetry, and cloud-hosted application deployment and troubleshooting.

Preferred:

• Familiarity with Azure Data Lake Storage concepts, including structured and unstructured data storage, hierarchical namespace patterns, access controls, and analytics integration.
• Azure Developer Associate, Azure DevOps Engineer Expert, or a comparable cloud or DevSecOps certification.
• Experience with infrastructure as code, containerized application delivery, observability tooling, and AI-enabled coding tools used with appropriate developer review and security controls.

Compensation:

$101,000 - $127,300 per year