Jobs in the United States

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Added 3 mins ago
TI
Applied AI Engineer, Go-to-Market
Tutor Intelligence
Watertown, MA
- $130,000 to $250,000 USD / year
As our first Applied AI Engineer on Go-to-Market, you'll build the operating system for how Tutor finds, wins, and grows customers across the physical economy. You'll design the process…
Added 4 mins ago
O
Senior Data Systems Software Engineer - Exadata Database
Oracle
Bismarck, ND
- $85,400 to $209,500 USD / year
The Exadata team builds the software that drives Oracle's highest-performance database systems for mission-critical OLTP, analytics, and cloud workloads. Exadata is the only database…
Added 6 mins ago
AS
IT - Systems Engineer
Apex Systems LLC
Denver, CO
- $70 to $75 USD / hour
Senior Identity & Access Management (IAM) Engineer
Added 14 mins ago
Systems Test Engineer II
Hewlett Packard Enterprise
Spring, TX
…Artificial Intelligence (AI) development and applications. The engineer plays a key role in validating complex integrated systems before release, helping identify product issues that could…
Added 41 mins ago
Cyber Security Systems Administrator - Cyber Security & TSOC - Akron FirstEnergy Headquarters
FirstEnergy Corp
Akron, OH
…includes one of the nation's largest investor-owned electric systems, more than 24,500 miles of transmission lines that connect the Midwest and Mid-Atlantic regions, and a regulated…
Added 41 mins ago
Radar Modeling and Simulation Analyst, Senior
BOOZ ALLEN HAMILTON INC
Dayton, OH
…results of that work to their leadership. As an electrical engineer, you understand the power behind complex systems. That knowledge is key when it comes to modeling foreign threat radar,…
Added 42 mins ago
BF
Senior Full Sack & GenAI Developer
BC Forward
Cincinnati, OH
- $65 USD / hour
…frontend interfaces, APIs, Terraform IaC, and CI/CD pipelines. * Engineer performance for data-heavy, low-latency, and reliable applications. * Integrate with enterprise platforms such as…
Added 51 mins ago
TT
Senior Solutions Engineer, Digital Native and Mid-Market
True Talent Solutions Partners
Remote, United States
- $147,000 to $175,000 USD / year
- Build expertise in the application security platform and help customers integrate it into CI/CD pipelines, developer workflows, and security programs.
Added 51 mins ago
TT
Senior/Staff Product Engineer, Applied AI
True Talent Solutions Partners
San Francisco, CA
- $200,000 to $300,000 USD / year
…agents into the core product, building and scaling the backend systems that support worker sourcing, vetting, matching, and…
Added 58 mins ago
T
Principal Software Engineer, AMER Payments
Trustly
NY
- $260,000 to $390,000 USD / year
…role. You'll own, in code, the contracts between our payments systems, bank connectivity and risk decisioning, and you'll build the hardest cross-system changes yourself. Expect to spend…
Added 1 hour ago
Senior Full Stack Engineer
FacilityOS
Annapolis, MD
We are looking for a highly capable Sr. Full Stack Engineer who can ramp up quickly, collaborate effectively with the existing team, and begin contributing meaningful delivery outcomes…
Added 1 hour 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 1 hour ago
A
Mechanical Systems Engineer
Actalent
Costa Mesa, CA
- $70 to $96 USD / hour
Job Title: Mechanical Systems EngineerJob DescriptionDesign and qualify actuated payload mechanisms including deployment systems, releases, doors, and latches. Own mechanism design from…
Added 1 hour ago
TT
Lead Software Engineer, Platform
True Talent Solutions Partners
San Francisco, CA
- $220,000 to $320,000 USD / year
Join a platform team at an AI/ML startup, helping build and strengthen the systems behind document processing. You will partner with ML engineers to make customer workloads fast, reliable,…
Added 1 hour ago
COBOL Developer
Social Security Administration
Woodlawn, MD
Added 1 hour ago
Infrastructure Engineer - DHA
Social Security Administration
Woodlawn, MD
Added 1 hour ago
Project Engineer Intern (For SNC Summer 2026 Intern Only)
Sierra Nevada Company, LLC
Hagerstown, MD
…commercial and international customers with years of experience in platform operations, engineering and full lifecycle management across domains – air, land, sea, space and…
Added 1 hour ago
Wireless and Edge AI/ML Engineer
BOOZ, ALLEN & HAMILTON, INC.
Annapolis Junction, MD
We're seeking an AI/ML Engineer to join a team building a converged platform that runs real-time wireless signal processing and AI inference on the same GPU-accelerated hardware. You will…
Added 1 hour ago
TT
Senior Forward Deployed Engineer
True Talent Solutions Partners
Redwood City, CA
- $215,000 to $290,000 USD / year
…with customer teams to turn requirements into production-ready systems, while sharing insights that help improve the…
Added 2 hours ago
BIM Systems Engineer, Design Services (DS)
Amazon Data Services, Inc.
Austin, TX · Herndon, VA
…implementing, managing, and adopting new BIM technologies and systems to support the design, construction, and operation of Amazon-owned data center…
Added 2 hours ago
Project Manager Role
OpenDataJobs
Washington, DC
Openings may involve application development, data platform modernization, cloud migration, systems integration, analytics delivery, or AI adoption. Some may require a Project Management…
Added 2 hours ago
AWS Cloud Systems Engineer
Systems Engineering Solutions Corporation
Hanscom Air Force Base, MA
This role supports the U.S. Air Force Cloud One Architecture and Common Shared Services contract and currently has an opening for an AWS Cloud Systems Engineer.
Added 2 hours ago
AWS Cloud Systems Engineer
Systems Engineering Solutions Corporation
Boston, MA
This role supports the U.S. Air Force Cloud One Architecture and Common Shared Services contract and currently has an opening for an AWS Cloud Systems Engineer.
Added 2 hours ago
O
DevSecOps Engineer (Kubernetes, CI/CD)
OpenDataJobs
Washington, DC
- $120,000 to $140,000 USD / year
At Peregrine Advisors, you will stand up and operate the delivery pipelines and cloud infrastructure that carry federal systems into production, keeping all of it secure and automated. But…
Added 2 hours ago
O
Junior DevSecOps Engineer (Python, CI/CD)
OpenDataJobs
Washington, DC
- $80,000 to $95,000 USD / year
…pipelines, and secure cloud infrastructure that keep federal systems running. But we hire people, not seats. As the work evolves, you will move to where the hardest problems…

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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