Senior Full Stack Engineer

FacilityOS

. Design, develop, review, and maintain backend web applications and services across the FacilityOS platform .

Posted 11/2/2026full-timeAnnapolis • Maryland • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in backend web application development using .NET Framework and .NET Core with a strong focus on C#, Angular, and TypeScript. Demonstrates expertise in designing RESTful services, cloud-native applications on Azure, and maintaining code quality through rigorous testing and architectural best practices.

Highest-signal resume keywords

Backend Web Application DevelopmentC# ProgrammingAngular DevelopmentRESTful Services DesignAzure Cloud Services

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

.NET Framework.NET CoreC#AngularTypeScriptRESTful ServicesMicrosoft SQL ServerT-SQLUnit TestingObject-Oriented Programming

Soft Skills

CollaborationSelf-ManagementTechnical Decision-Making

Tools & Technologies

AzureAWSStatic Code AnalysisEngineering Tools

Industry Keywords

Legacy ModernizationMicroservicesEvent-Driven ArchitectureClean ArchitectureStrangler Fig Pattern

Tech Stack

Tools & technologies

AngularAWSAzureCloudMicroservicesMS SQL ServerSQLTypeScript.NET

About the role

Key responsibilities & impact

Design, develop, review, and maintain backend web applications and services across the FacilityOS platform
Learn existing platform architecture, legacy components, integration points, and modernization opportunities
Collaborate with engineering teams on technical decisions aligned with architectural principles and delivery goals
Contribute to legacy modernization using incremental, low-risk approaches such as the Strangler Fig pattern
Maintain code quality through code reviews, unit testing, static code analysis, and engineering tools and standards
Participate in peer code reviews and promote maintainable, testable, and scalable solutions
Troubleshoot and resolve application issues across staging and production environments, emphasizing root-cause analysis and sustainable fixes
Work with engineering leads, product stakeholders, and project managers to support business operations and project delivery
Research, evaluate, and recommend application, automation, and architectural improvements

Requirements

What you’ll need

Minimum 6 years of proven experience in backend .NET Framework / .NET Core web application development using C#
Minimum 5 years of experience developing web applications using Angular and TypeScript
Ability to quickly understand complex legacy systems and identify integration points
Experience with object-oriented programming, design patterns, and clean architecture principles
Experience writing unit tests and applying quality-focused development practices
Experience designing and building RESTful services
Experience designing and building cloud-native SaaS and PaaS applications using Azure or AWS; Azure preferred
Solid knowledge of Microsoft SQL Server and T-SQL
Ability to make sound technical decisions in collaboration with engineering teams
Ability to self-manage priorities and deliver outcomes with minimal supervision
Ability to collaborate across engineering, architecture, and product stakeholders
Event-driven architecture experience is a plus
Microservices experience is a plus
Must be legally eligible to work in the location in which you applied
Offer may be conditional upon criminal record, credit, employment, educational, and reference checks

Benefits

Comp & perks

Comprehensive health coverage
Hybrid work environment
Opportunity for advancement and growth
Catered events, snacks, and drinks
Birthday and life celebrations
Two annual parties per year