Senior Full-Stack Engineer (Hybrid) - .NET & Angular

FacilityOS; Annapolis (MD); Hybrid; USD 120,000 - 170,000; Full time

Benefits offered by this job

Comprehensive health coverage

Hybrid work environment

Opportunity for advancement and growth

Catered events, snacks, drinks

Birthday and life celebrations

Two annual parties

Job summary

FacilityOS, a fast-growing platform for safety, security, and daily operations, seeks a Sr. Full Stack Engineer to ramp quickly and deliver meaningful outcomes.

You will work with legacy systems, apply strong architectural principles, and make technical decisions that improve delivery throughput without compromising quality. The ideal candidate has backend .NET experience, solid Angular/TypeScript skills, and a track record of building cloud-native SaaS/PaaS apps.

Qualifications

• 6+ years of backend .NET Framework / .NET Core development in C#.
• 5+ years of web apps using Angular and TypeScript.
• Strong ability to understand complex legacy systems and integrate points.
• Experience with OO design, patterns, and clean architecture.
• Proven unit testing and quality-focused practices.
• Experience designing RESTful services and cloud-native SaaS/PaaS apps.

Responsibilities

• Design, develop, review, and maintain backend web apps and services on the FacilityOS platform.
• Understand platform architecture, legacy components, and modernization opportunities.
• Collaborate with engineering to align with architecture and delivery goals.
• Contribute to legacy modernization with incremental, low-risk approaches (e.g., Strangler Fig).
• Maintain high code quality via reviews, tests, static analysis, and tooling improvements.
• Engage in peer reviews, provide constructive feedback, and promote scalable solutions.
• Troubleshoot issues across environments (staging/production) focusing on root cause.
• Work with leads, product stakeholders, and PMs to support operations and delivery.
• Research and recommend architectural improvements for FacilityOS.

Skills

Backend .NET / C#

Angular & TypeScript

RESTful APIs

Cloud-native apps (Azure/AWS)

SQL Server / T-SQL

OO Design & Clean Architecture

Unit testing

Event-Driven Architecture

Microservices

Independent collaboration

Job description

FacilityOS, a fast-growing platform for safety, security, and daily operations, seeks a Sr. Full Stack Engineer to ramp quickly and deliver meaningful outcomes.

You will work with legacy systems, apply strong architectural principles, and make technical decisions that improve delivery throughput without compromising quality. The ideal candidate has backend .NET experience, solid Angular/TypeScript skills, and a track record of building cloud-native SaaS/PaaS apps.