Jobs in the United States

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Added 10 mins ago
Battery Lab Test Systems Engineer
General Motors
Warren, MI
An engineer seeking end-to-end ownership of the software backbone that keeps more than 100 battery test beds running across GBSL, WBCIC, and the RWC will be well-matched to this position.…
Added 20 mins ago
J
Senior Android Engineer - Fan Monetization
Jobgether
Remote, United States
- $160,000 to $190,000 USD / year
…and next steps. Our partner is looking for a Senior Android Engineer – Fan Monetization based in the United…
Added 4 hours ago
Senior Software Engineer II
Invoca
Remote, United States
…appointment, or act in the customer's own system. We own that surface end to end: vendor connectors and MCP servers, webhooks, Google Ads, the web widget, and the production monitoring…
Added 5 hours ago
Automation Engineer
Colgate-Palmolive Company
Piscataway, NJ
As an Automation Engineer reporting to the Director of Production Control and Automation within our enterprise service management team, you will lead the delivery of automation, monitoring…
Added 5 hours ago
AI Solution Engineer
Colgate-Palmolive Company
Piscataway, NJ
The AI Solution Engineer designs, builds, deploys, and supports secure, production-grade enterprise applications powered by LLMs and multi-agent architectures. The role combines modern…
Added 6 hours ago
AE
Campus Graduate Masters Summer Internship Program - 2027 Software Engineer, Enterprise Technology Services- Phoenix, AZ
American Express
Phoenix, AZ
- $24.05 to $63 USD / hour
At American Express, we empower future technologists to learn, innovate, and make an impact from day one. As a Software Engineer Intern, you’ll join a 10-week Summer Internship Program and…
Added 7 hours ago
Principal SecOps & Observability Engineer (Clearance Secret or Top Secret)
Hewlett Packard Enterprise
Ft. Collins, CO · Montgomery, AL · Spring, TX · Oklahoma City, OK · All, MD · All, FL
Designs, develops, troubleshoots and debugs software and integration solutions across enterprise platforms. Architects the integration of third-party products into a unified operations…
Added 9 hours ago
Senior Software Engineer
FacilityOS
Annapolis, MD
We are looking for a highly capable Sr. Back-End Engineer who can ramp up quickly, collaborate effectively with the existing team, and begin contributing meaningful delivery outcomes within…
Added 10 hours ago
Sr BEOL Engineer - DRAM Process Integration
Micron Technology
Boise
As a Sr BEOL Engineer, you will take on a vital role in our back-end-of-line (BEOL) process-integration group within Research and Development. You will partner with skilled specialists to…
Added 12 hours ago
ConvergeCONSUMER, Backend DevOps_Products & Platforms
Deloitte US
Arlington Heights, IL · Atlanta, GA · Austin, TX · Baltimore, MD · Bellevue, WA · Birmingham, AL · Boise, ID · Boston, MA · Charlotte, NC · Chicago, IL · Cincinnati, OH · Cleveland, OH · Colorado Springs, CO · Columbus, OH · Costa Mesa, CA · Dallas, TX · Davenport, IA · Dayton, OH · Denver, CO · Des Moines, IA · Detroit, MI · Fort Worth, TX · Fresno, CA · Ft. Lauderdale, FL · Gilbert, AZ · Grand Rapids, MI · Hartford, CT · Hermitage, TN · Honolulu, HI · Houston, TX · Huntsville, AL · Indianapolis, IN · Inglewood, CA · Jacksonville, FL · Jericho, NY · Jersey City, NJ · Kansas City, MO · Lake Mary, FL · Lansing, MI · Las Vegas, NV · Los Angeles, CA · Louisville, KY · McLean, VA · Mechanicsburg, PA · Memphis, TN · Miami, FL · Midland, MI · Milwaukee, WI · Minneapolis, MN · Monterey, CA · Morristown, NJ · Nashville, TN · New Orleans, LA · NY · Omaha, NE · Philadelphia, PA · Pittsburgh, PA · Portland, OR · Princeton, NJ · Raleigh, NC · Richmond, VA · Rochester, NY · Rosslyn, VA · Sacramento, CA · Salt Lake City, UT · San Antonio, TX · San Diego, CA · San Francisco, CA · San Jose, CA · Seattle, WA · St. Louis, MO · Stamford, CT · Tallahassee, FL · Tampa, FL · Tempe, AZ · Tulsa, OK · Washington, DC · Westlake, TX · Wichita, KS · Williamsville, NY
Are you the person people call when a delivery-blocking issue needs to be found fast? As a Backend DevOps & UAT Engineer on ConvergeCONSUMER, you'll be the technical backstop for our…
Added 13 hours ago
AE
Campus Undergraduate Full-Time Engineer - 2027 Software Engineer I, Enterprise Technology Services- Sunrise, FL
American Express
Sunrise, FL
- $78,000 to $124,750 USD / year
- Full-time
Back-End Engineering: Java, Python, Go, APIs, microservices, distributed systems, Big Data, or data-oriented engineering concepts.
Added 13 hours ago
AE
Campus Undergraduate Full-Time Engineer - 2027 AI Engineer I, Enterprise Technology Services- Sunrise, FL
American Express
Sunrise, FL
- $78,000 to $124,750 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As an AI Engineer I in Enterprise Technology Services, you’ll join a full-time graduate…
Added 21 hours ago
AE
Campus Graduate Masters Summer Internship Program - 2027 Software Engineer, Enterprise Technology Services- New York, NY
American Express
New York, NY
- $24.05 to $63 USD / hour
At American Express, we empower future technologists to learn, innovate, and make an impact from day one. As a Software Engineer Intern, you’ll join a 10-week Summer Internship Program and…
Added 21 hours ago
AE
Campus Graduate Masters Full-Time Engineer - 2027 AI Engineer I, Enterprise Technology Services- New York, NY
American Express
New York, NY
- $78,000 to $124,750 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As an AI Engineer I in Enterprise Technology Services, you’ll join a full-time graduate…
Added 21 hours ago
AE
Campus Graduate Masters Full-Time Engineer - 2027 Software Engineer II, Enterprise Technology Services- New York, NY
American Express
New York, NY
- $89,250 to $150,250 USD / year
- Full-time
Back-End Engineering: Java, Python, Go, APIs, microservices, distributed systems, Big Data, or data-oriented engineering concepts.
Added 1 day ago
Model-Based Systems Engineer - Digital Transformation
Ford Motor Company
Dearborn, MI
…We are seeking an ambitious and skilled Model-Based Systems Engineer to join our Digital Transformation team. In this role, you will be at the forefront of digital innovation, helping shape…
Added 1 day ago
AE
Campus Graduate Masters Full-Time Engineer - 2027 Software Engineer II, Enterprise Technology Services- Phoenix, AZ
American Express
Phoenix, AZ
- $89,250 to $150,250 USD / year
- Full-time
Assist with debugging, troubleshooting, code reviews, unit testing, integration testing, and production-readiness activities.
Added 1 day ago
AE
Campus Undergraduate Full-Time Engineer - 2027 Software Engineer I, Enterprise Technology Services- Phoenix, AZ
American Express
Phoenix, AZ
- $78,000 to $124,750 USD / year
- Full-time
Back-End Engineering: Java, Python, Go, APIs, microservices, distributed systems, Big Data, or data-oriented engineering concepts.
Added 1 day ago
Pn Software Engineer (Remote)
CareFirst
Baltimore, MD
…deployment point of view. Demonstrated experience with front-end and back-end programing and integration frameworks and tools. Estimate the effort required to develop, test and deploy…
Added 1 day ago
S
I4.0 Software Engineer
Saint-Gobain
MALVERN, PA
- $102,000 to $158,000 USD / year
As part of Saint-Gobain’s Digital Manufacturing Program, the I4.0 Software Engineer plays a critical role in accelerating the digital transformation of manufacturing operations across North…
Added 1 day ago
Staff Mobile Engineer, iOS
Abbott
Alameda, CA
This Staff Mobile Engineer, iOS position works onsite in our Alameda, CA location for Lingo.
Added 1 day ago
Computer Systems Engineer – Space Payload Emulators – (Experienced or Lead)
The Boeing Company
El Segundo, CA
As a Computer Systems Engineer , you will support the development and integration of space payload emulators in El Segundo, CA. In support of Boeing Defense Systems next-generation space…
Added 1 day ago
Senior Frontend Engineer (LATAM)
Lateral Group
Remote, United States
Collaborate & communicate: Work closely with designers, back-end developers, and product managers in an asynchronous workflow. You’ll regularly communicate with clients to clarify…
Added 1 day ago
Senior Frontend Engineer (Benelux)
Lateral Group
Remote, United States
Collaborate & communicate: Work closely with designers, back-end developers, and product managers in an asynchronous workflow. You’ll regularly communicate with clients to clarify…
Added 1 day ago
Senior .NET / Blazor Engineer (LATAM)
Lateral Group
Remote, United States
Create and execute API request/response tests using Postman (or similar tooling) to support the front-end integration with back-end services.

FacilityOS

Senior Software Engineer

Annapolis, MD, United States

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Job details

Experience: Minimum of 6 years of proven experience in backend .NET Framework / .NET Core web application development using C#.
Posting language: English
Posted: Nov 1, 2026

Original job description

ABOUT FACILITYOS

FacilityOS is a fast-growing company redefining how facilities operate - bringing safety, security, and daily operations into one unified platform used by organizations around the world.

As we continue to scale globally, we’re building a team of driven, curious people who want to make an impact. You’ll be part of a dynamic, collaborative culture where individuals are trusted to take ownership, solve meaningful problems, and grow in their careers. Our team comes together in-office twice a week to connect, collaborate, and build momentum.

If you’re looking to do your best work alongside a great team in a high-growth environment, FacilityOS is the place to build your career.

About the Role:

We are looking for a highly capable Sr. Back-End Engineer who can ramp up quickly, collaborate effectively with the existing team, and begin contributing meaningful delivery outcomes within the first few weeks. This role is well suited for someone who is comfortable navigating legacy systems, applying strong architectural principles, and making thoughtful technical decisions that improve delivery throughput without compromising quality.

The ideal candidate brings strong backend engineering experience, sound judgment, and the ability to work independently while staying closely aligned with team standards and architectural direction.

This role is a hybrid position where you’ll be required to come into our office three (3) times a week.

Duties and Responsibilities:

Design, develop, review, and maintain backend web applications and services across the FacilityOS platform.
Quickly develop a working understanding of existing platform architecture, legacy components, integration points, and modernization opportunities.
Collaborate with the engineering team to make sound technical decisions that align with established architectural principles and delivery goals.
Contribute to legacy modernization efforts using incremental, low-risk approaches such as the Strangler Fig pattern where appropriate.
Maintain high code-quality standards through code reviews, unit testing, static code analysis, and the adoption or improvement of engineering tools and standards.
Participate actively in peer code reviews, providing constructive feedback and helping promote maintainable, testable, and scalable solutions.
Troubleshoot and resolve application issues across environments, including staging and production, with a focus on root-cause analysis and sustainable fixes.
Work directly with engineering leads, product stakeholders, and project managers to support business operations and project delivery.
Research, evaluate, and recommend innovative application, automation, and architectural improvements that would benefit the FacilityOS platform.

Skills and Qualifications:

Minimum of 6 years of proven experience in backend .NET Framework / .NET Core web application development using C#.
Proven ability to quickly understand complex legacy systems, identify key integration points, and contribute effectively with limited ramp-up time.
Strong experience using object-oriented programming, design patterns, and clean architecture principles to build maintainable, testable software.
Proven experience writing unit tests and applying quality-focused development practices.
Proven experience designing and building RESTful services.
Experience in designing and building cloud-native SaaS and PaaS applications (Azure / AWS). Azure cloud experience will be preferred
Solid knowledge of Microsoft SQL Server and T-SQL.
Ability to make sound technical decisions in collaboration with existing engineering teams.
Proactive, curious, and investigative mindset with strong attention to quality and detail.
Passion for technology, continuous improvement, and modern engineering practices.
Ability to self-manage priorities and deliver outcomes with minimal supervision.
Strong team-player attitude with the ability to collaborate across engineering, architecture, and product stakeholders.
Hands-on experience with Event-Driven architecture is a plus
Hands-on experience with Microservices is a plus

Why work at FacilityOS?

We work hard and play hard and we do both with passion and respect for one another. Our company promotes a fast-paced, fun, friendly, and highly collaborative work environment that provides:

🩺Comprehensive health coverage

🏠A Hybrid work environment

💡Opportunity for advancement and growth

🍕 Catered Events, Snacks, Drinks – You won’t go Hungry!

🥳 Birthday and Life Celebrations

🎉 Two annual parties in a year

FacilityOS Commitment

We believe that a diverse team is the key to innovation and growth. We are an equal opportunity employer that value diversity at our company and encourage all candidates to apply. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

FacilityOS will accommodate individuals with disabilities through each stage of the recruitment and selection process. Please advise us of any needs when your interview is booked, and we will do our best to meet your needs.

Please note that all candidates must be legally eligible to work in the location in which you applied.

Background and Reference Checks

Any offer of employment may be conditional upon full background checks including a criminal record check, a credit check and employment and educational verifications. A reference check will also be conducted.

We may use artificial intelligence (AI) tools to support parts of the hiring process such as reviewing applications. These tools assist the recruitment team but do not replace human judgment. All advancement and hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us or click here https://www.deeplytalented.com/responsible-ai.

FacilityOS thanks all candidates for their interest, however only those selected to continue in the process will be contacted.

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