Jobs in the United States

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Added 23 mins ago
Senior Software Engineer – AI, Tax and Audit, FDE
Thomson Reuters (Tax & Accounting) Inc
Brooklyn, NY · Frisco, TX · Ann Arbor, MI · Eagan, MN
…complex work, and deliver better outcomes for their clients. As a Senior Software Engineer, you will combine Python, backend engineering, large language models (LLMs), and client-facing…
Added 39 mins ago
J
Senior Front End Engineer - React/Typescript
Jobgether
Remote, United States
- $112,900 to $188,100 USD / year
We are looking for a Senior Front End Engineer to help shape the tools, architecture, and technologies powering a large-scale micro frontend ecosystem.
Added 52 mins ago
Senior Site Reliability Engineer/Cloud Platform Engineer
Skyflow
Remote, United States
We're looking for a Platform Engineer to help build and run the infrastructure that powers a multi-tenant, security-sensitive B2B cloud product used by enterprise customers around the…
Added 1 hour ago
TT
Senior Full Stack Engineer
True Talent Solutions Partners
Boston, MA
- $185,000 to $210,000 USD / year
…coordination for people living with serious chronic conditions. As a senior individual contributor and product-minded engineer, you will help shape the product and engineering practices…
Added 1 hour ago
J
Senior Software Engineer - Front End (Library of Congress)
Jobgether
Remote, United States
- $100,000 to $135,000 USD / year
…all applications and next steps. Our partner is looking for a Senior Software Engineer - Front End (Library of Congress) based in the United…
Added 1 hour ago
Senior Software Engineer II
Invoca
Remote, United States
We are looking for a Senior Software Engineer II who builds leverage for the team, not just executes within it. You likely have:
Added 2 hours ago
Lead Engineer
Jobgether
Remote, United States
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Lead Engineer based in the United States.
Added 2 hours ago
S
R&D Project Engineer
SprintRay
Huntington Beach
- $80,000 to $95,000 USD / year
The R&D Project Engineer is a hybrid role that combines program leadership with hands-on laboratory work. Approximately half of the role (~50%) is dedicated to planning and driving…
Added 2 hours ago
C
Business Operations Lead
Coast
NY
- $160,000 to $200,000 USD / year
…that put AI to work in the business. You don’t need to be an engineer. You do need to be the person who reaches for AI first, and who can tell when it’s doing a good job and when it…
Added 3 hours ago
Design Engineer
Actalent
Glendale, CA
acknowledge and agree that your application may be reviewed using AI tools.
Added 3 hours ago
Staff Site Reliability Engineer- Networking
Jobgether
Remote, United States
…steps. Our partner is looking for a Staff Site Reliability Engineer – Networking based in United States…
Added 3 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 3 hours ago
Senior PostgreSQL Database Engineer
Valiant Solutions, LLC
St. Louis, MO
Valiant Solutions is seeking a Senior PostgreSQL Database Engineer to join our rapidly growing, innovative team!
Added 3 hours ago
Senior Azure Infrastructure Engineer
Jobgether
Remote, United States
…all applications and next steps. Our partner is looking for a Senior Azure Infrastructure Engineer based in United States…
Added 4 hours ago
TT
Mid/Senior Full Stack AI Engineer
True Talent Solutions Partners
San Francisco, CA
- $180,000 to $250,000 USD / year
- Startup experience, strong product sense, curiosity about emerging AI tools, and comfort working in ambiguous, early-stage environments.
Added 4 hours ago
IEC Engineer
Valiant Solutions, LLC
Springfield, VA, VA
Valiant Solutions is seeking an IEC Engineer to join our rapidly growing and innovative team!
Added 4 hours ago
DevOps Architect
Jobgether
Remote, United States
…help modernize engineering workflows by integrating AI-powered tools into infrastructure development, automation, and troubleshooting while maintaining high standards of security and…
Added 4 hours ago
Senior Integration Engineer – AI - Tax And Audit AI
Thomson Reuters (Tax & Accounting) Inc
Brooklyn, NY · Frisco, TX · Chicago, IL · Ann Arbor, MI · Eagan, MN
Help bring AI into the systems tax and audit professionals rely on every day. As a Senior Integration Engineer, you will connect AI solutions with Thomson Reuters products and client…
Added 4 hours ago
Senior Tax & Audit AI Engineer, FDE
Thomson Reuters (Tax & Accounting) Inc
Brooklyn, NY · Frisco, TX · Chicago, IL · Ann Arbor, MI · Eagan, MN
…hands-on role, you will combine tax or audit expertise with AI tools to build automations, validate their accuracy and deliver solutions that professionals can confidently use. You will…
Added 4 hours ago
Endpoint Security Engineer
Valiant Solutions, LLC
Springfield, VA, VA · St. Louis, MO
Valiant Solutions is seeking an Endpoint Security Engineer to join our rapidly growing and innovative team!
Added 4 hours ago
Cybersecurity Implementation Engineer
Valiant Solutions, LLC
Springfield, VA, VA
Valiant Solutions is seeking a Cybersecurity Implementation Engineer to join our rapidly growing and innovative team!
Added 5 hours ago
TT
Founding Senior Engineer
True Talent Solutions Partners
New York, NY
- $175,000 to $225,000 USD / year
Join an early-stage AI company building growth tools for consumer brands. As the second engineer, you will build core product systems hands-on while shaping the engineering culture and…
Added 5 hours ago
TT
Forward Deployed Engineer
True Talent Solutions Partners
San Francisco, CA
- $165,000 to $250,000 USD / year
- Lead end-to-end deployments and serve as the primary technical contact for senior customer stakeholders.
Added 5 hours ago
AS
IT - Systems Engineer
Apex Systems LLC
Denver, CO
- $70 to $75 USD / hour
Senior Identity & Access Management (IAM) Engineer
Added 5 hours ago
AI Software Engineer
Credence Management Solutions LLC
Dayton, OH
…Position Summary Credence has an immediate need for an AI Software Engineer to join our growing AI and Automation practice. You will be a technical anchor in our AI and Automation practice.…

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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