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Senior Electrical & Electronics (E&E) Engineer - Test Solutions – Onsite (Tewksbury/Andover, MA)
RTX Corporation
tewksbury, MA
This position is for a Senior Electrical Engineer with at least five (5) years of professional experience. If you enjoy working in hands-on multidisciplinary teams, the Test Solutions team…
Added just now
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Senior Data Systems Software Engineer - Exadata Database
Oracle
Boston, MA
- $85,400 to $209,500 USD / year
Design scalable, fault-tolerant distributed systems for large on-prem and cloud environments.
Added 37 mins ago
Design Engineer
Actalent
Glendale, CA
Summary:Design and develop aerospace and defense products such as connectors, cable assemblies, and electro-mechanical components. Use SolidWorks to create designs, work with manufacturing…
Added 47 mins ago
Staff Site Reliability Engineer- Networking
Jobgether
Remote, United States
In this senior technical role, you will define and lead networking strategy across a globally distributed hybrid infrastructure supporting a large-scale internet intelligence and…
Added 47 mins ago
VP
Senior AWS Cloud Engineer
Votaw Precision Technologies LLC
Santa Fe Springs, CA
- $130,000 to $165,000 USD / year
The Senior AWS Cloud Engineer will build and own Vela’s cloud foundation in AWS GovCloud (US), where CUI and manufacturing data will reside. This hands-on role will establish the landing…
Added 58 mins 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
…enterprise data governance and platforms, digital product and design, and enterprise AI platforms on behalf of the…
Added 1 hour ago
Senior PostgreSQL Database Engineer
Valiant Solutions, LLC
St. Louis, MO
The Senior PostgreSQL Database Engineer will join a program providing User-facing and Data Center Services supporting an Intelligence Community customer. The team will work together to…
Added 1 hour ago
Senior Azure Infrastructure Engineer
Jobgether
Remote, United States
The Senior Azure Infrastructure Engineer will design, implement, automate, and support secure, scalable, and resilient cloud infrastructure within an enterprise Azure environment. Working…
Added 1 hour ago
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Signals Discipline Lead
AECOM
Pittsburgh, PA
- $160,000 to $200,000 USD / year
…transit signal systems. The successful candidate will support the design, development, and implementation of signal engineering solutions for rail and transit infrastructure projects. The…
Added 1 hour 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
…data, and interface compatibility to influence overall system design in secure, disconnected, and hybrid…
Added 1 hour ago
Senior VDI Engineer
Valiant Solutions, LLC
St. Louis, MO
The Senior VDI Engineer will join a program providing User-facing and Data Center Services supporting an Intelligence Community customer. The team will work together to support innovative…
Added 1 hour ago
IEC Engineer
Valiant Solutions, LLC
Springfield, VA, VA
The IEC Engineer will join a program providing User Facing and Data Center Services supporting an Intelligence Community customer. The team will work together to support innovative design,…
Added 1 hour ago
Ports & Marine Delivery Leader - West Coast
Arcadis
Los Angeles
Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.
Added 1 hour ago
Ports & Marine Delivery Leader - Mid-Atlantic/Northeast
Arcadis
Philadelphia
Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.
Added 1 hour ago
DevOps Architect
Jobgether
Remote, United States
We are seeking an experienced DevOps Architect to design, build, and own scalable, secure, and cost-efficient cloud infrastructure on AWS. This is a hands-on architecture role combining…
Added 2 hours ago
Senior Tax & Audit AI Engineer, FDE
Thomson Reuters (Tax & Accounting) Inc
Brooklyn, NY · Frisco, TX · Chicago, IL · Ann Arbor, MI · Eagan, MN
Design solutions that preserve professional judgment and incorporate controls for accuracy, risk and professional standards.
Added 2 hours ago
Solutions Engineer
Baselayer
NY
We run like a startup inside a startup: a small senior team led by our GM of Agentic Economy, working directly with payment networks, banks, wallet providers, and agent platforms. The…
Added 2 hours ago
Senior Software Engineer, Identity Graph
Baselayer
San Francisco, CA
…growing surface of customer-facing API products. We're hiring a senior engineer to own product features across that surface end-to-end: schema design, data ingestion, entity resolution, API…
Added 2 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 2 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 2 hours ago
C
Applied AI Engineer (Forward Deployed) [NYC or SF]
Concurrence
New York City, NY
- $200,000 to $260,000 USD / year
As a Senior Applied AI Engineer, you own an entire customer use case, not a ticket or a slice of one. You take a deployment from brief to production. You make the architecture calls inside…
Added 2 hours ago
Senior Tooling Engineer
Sanders Industries Holdings
San Clemente, CA
IRP MED is seeking a highly motivated Senior Tooling Engineer to support the design, development, and optimization of tooling for Liquid Silicone Rubber (LSR) molded components. This role…
Added 2 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 2 hours ago
Senior Electrical Design Engineer
Omaha Public Power District
Omaha, NE
As a Senior Electrical Design Engineer, you will provide technical leadership for major capital projects and strategic generation fleet modernization initiatives. This role serves as a…
Added 3 hours ago
Sentinel - Staff Systems Engineer - Mechanical Systems Design Integrator
Northrop Grumman
Roy · Manhattan Beach
The Staff Mechanical Systems Design Integrator (level 5 engineer) will work with our Sentinel Systems Engineering & Integration (SE&I) Business Unit’s System Integration & Sustainment (SIS)…

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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