Full Stack Engineer

Mission Recruit; United States; On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Medical insurance

Vision insurance

401(k)

Job summary

A Federal client-focused technology firm is seeking a Mobile Application Developer to design and maintain secure, high-performance mobile apps. You'll work with Flutter/Dart for mobile, Angular for web UI, and ASP.NET Core for backend services. Ideal candidates will have experience in building apps, REST APIs, and be able to obtain U.S. government security clearance. This full-time role offers competitive insurance benefits and a collaborative working environment.

Qualifications

• Experience designing and consuming RESTful APIs; JSON/HTTP fundamentals.
• Proficiency with Git-based workflows, code reviews, and Agile delivery.
• Ability to obtain and maintain U.S. government security clearance.

Responsibilities

• Build and ship cross-platform Flutter/Dart mobile applications.
• Develop modular Angular components and integrate with REST APIs.
• Design and implement ASP.NET Core Web APIs with Dependency Injection.

Skills

Flutter with Dart

Angular (TypeScript)

.NET (ASP.NET Core Web API)

CompTIA Security+ certification

RESTful APIs design and consumption

Git workflows

Strong communication skills

Tools

Microsoft SQL Server

SQL Server Management Studio (SSMS)

Job description

Work with talented and high performing team!

We’re seeking a contract Mobile Application Developer to design, build, and maintain secure, high-performance mobile apps and related web services for a Federal client. You’ll use Flutter/Dart for cross-platform mobile, Angular for web UI, and ASP.NET Core Web API with Dependency Injection and Entity Framework Core for backend services.

Key Responsibilities

• Build and ship cross-platform Flutter/Dart mobile applications with robust state management, offline sync, and accessibility best practices.
• Develop modular, responsive Angular components and pages; integrate with design systems and REST APIs.
• Design and implement ASP.NET Core Web APIs using DI and Entity Framework Core; write maintainable data models, migrations, and queries.
• Apply secure coding practices aligned to Security+ principles and OWASP guidance; implement authentication/authorization and input validation.
• Automate builds, testing, and deployments (CI/CD); monitor performance and reliability; troubleshoot across the stack.
• Collaborate with product, UX, security, and DevOps; participate in Agile ceremonies, code reviews, and release planning.
• Create clear technical documentation and contribute to engineering standards.

Must-Have Qualifications

• Flutter with Dart
• Angular (TypeScript) for front-end development.
• .NET (ASP.NET Core Web API) with Dependency Injection and Entity Framework Core.
• CompTIA Security+ (CE) certification or ability to obtain within 30 days of hire, and eligibility to obtain/maintain a secret clearance. This role requires the ability to obtain and maintain a U.S. government security clearance (which typically requires U.S. citizenship)
• Experience designing and consuming RESTful APIs; JSON/HTTP fundamentals.
• Proficiency with Git-based workflows, code reviews, unit/integration testing, and Agile delivery.
• Strong communication and collaboration skills.

Nice-to-Have (Preferred)

• Microsoft SQL Server experience and proficiency with SQL Server Management Studio (SSMS) for administration, profiling, and query tuning.
• Experience with application telemetry/monitoring, performance optimization, and incident response.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology

Industries

• Government Administration

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Inferred from the description for this job

Medical insurance

Vision insurance

401(k)

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