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This role will work closely with project management, field supervision, subcontractors, and design teams to coordinate mechanical construction activities, resolve technical issues, and ensure work is completed safely, efficiently, and in accordance with project specifications. The ideal candidate has a background in mechanical engineering or construction, an understanding of commercial or industrial mechanical systems, and an interest in supporting complex construction projects from installation through commissioning.

Every day, System One focuses on services and solutions that require a high degree of specialization, in-demand technical skills, and large-scale operational expertise. We are essential partners to those on the front lines of our nation’s most critical infrastructure, technology, and life sciences initiatives. 
Founded more than 40 years ago as a staffing partner to the engineering industry, today System One is a diversified organization operating in over 50 locations and putting more than 9,000 people to work in the United States, Canada, and the United Kingdom.

System One

Mechanical Construction Engineer

This role will work closely with project management, field supervision, electrical subcontractors, vendors, and design teams to coordinate electrical installations, resolve technical issues, and ensure work is completed safely, efficiently, and in accordance with project specifications. We are seeking an Electrical Construction Engineer to support the planning, coordination, and execution of electrical construction activities for large-scale, mission-critical data center projects in the Tysons, VA region.

Electrical Construction Engineer

This role will work closely with project management, field supervision, subcontractors, vendors, and design teams to coordinate construction activities, resolve technical issues, and ensure work is completed safely, efficiently, and in accordance with project specifications. We are seeking a Civil / Structural Construction Engineer to support the planning, coordination, and execution of civil and structural construction activities for large-scale, mission-critical data center projects in the Tysons, VA region.

Civil / Structural Construction Engineer

To be the best full-service lifting, rigging, and relocation solutions company, enabling total project success for teams that construct, move, or maintain mission-critical plant, machines, and equipment. To acknowledge and glorify God by living in submission to Him as we steward His resources, giving Him thanks through the meaningful work we do, and directing the profits of our business to the redemptive work He is doing on the earth.

The Prolift Rigging Company

Branch Engineer

AdvantageAI

Strong understanding of Linux kernel implementation details, distributed systems including PAXOS and raft, storage implementations details like NAND or write amplification, networking store/forward, load balancing designs, and production operations. Our customers are building infrastructure at serious scale: GPU clusters, high-performance storage systems, Kubernetes platforms, distributed training environments, inference platforms, data pipelines, lakehouses, and large enterprise systems.

VAST Data

Senior Solutions Engineer, AI Infrastructure

Ivy Exec

Proficient expereince with current database management tools, technologies, and application design using database management languages. Supports database systems, to include patching, performance monitoring, server management, and systems administration.

ELSUR Collection Systems Database Engineer (Top Secret)

YEAR

The ideal candidate will possess advanced software engineering expertise, strong development skills, and the ability to mentor team members while contributing hands-on to complex technical initiatives. We are seeking an experienced Senior Software Engineer to provide technical leadership and drive the design, development, and delivery of mission-critical software solutions.

Senior Software Engineer C#

Experience designing data pipelines and products on Palantir Foundry, Army Vantage, or a comparable enterprise data platform. Bachelor’s degree in computer science, engineering, information systems, data science, or a related field, or equivalent practical experience.

Data Engineer

Develop and execute end-to-end performance tests, analyze application behavior, and identify bottlenecks across integrated systems, microservices, databases, and AWS services. Ability to establish performance baselines, analyze test results and application metrics, implement or recommend remediation, and retest to demonstrate improvement.

Senior Full Stack Engineer

Experience building enterprise software systems that run in Azure Cloud environment using technologies such as Azure Container Apps (or AKS), Azure Functions, Azure Queue Storage (or Service Bus Queues), Azure Service Bus Topics (or Event Grid), Azure Blob Storage, Azure API Management, Azure Cosmos DB (Table API), Azure AI Search, Azure Database for PostgreSQL – Flexible Server, Azure Cosmos DB (Gremlin API), Azure Cosmos DB (MongoDB API), Azure Bicep (or Azure CDK). This is an engineering role that works as part of the software engineering team towards the development and deployment of enterprise and informatics software systems to support cancer clinical trials and research.

C#/.Net Software Engineer

HOUR

This role is heavily centered on Java backend development, application modernization, cloud readiness, and integration work, helping transform legacy systems into scalable, cloud-native solutions. We are seeking a Lead Software Engineer to support a multi-year cloud modernization initiative focused on migrating enterprise applications from on-premises and mainframe environments to AWS.

Lead Software Engineer

Support AWS infrastructure including EC2, S3, VPC, IAM, CloudWatch, Systems Manager, load balancing, DNS, and related services. System One, and its subsidiaries including Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.

AWS Solutions Engineer

Responsible for the deployment, maintenance, and configuration of UAM software solutions to detect and mitigate insider threats, ensuring system functionality, coverage, and user training across enterprise environments. Provide guidance on upgrades and system recapitalization, perform availability/capacity management and support all networking requirements and ensure full availability of all network switches and routers.

UAM Everfox Tool Engineer - Senior Level

UAM Everfox Tool Engineer - Mid-level

Provide web development, security administration, and IT services to implement JDS activities associated with analytic support to future force planning and capabilities. A minimum one (1) year of demonstrated ability leading the management of DoD systems, networks, and IT infrastructure configuration.

Hardware Engineer III

We are seeking a Senior Telecommunications Design Engineer to support a secure federal communications environment responsible for maintaining and modernizing mission-critical telecommunications and data center infrastructure. The engineer will develop engineering documentation and infrastructure designs supporting secure voice, data, and communications systems within a high-availability environment.

Telecommunications Design Engineer

As a critical member of our Facilities Team, the Building Systems Engineer, Senior Associate is responsible for the operation, maintenance, and repair of Net Zero building systems, including mechanical, electrical, plumbing, life safety, and building automation systems. Conducts routine building walk-throughs to assess system performance, document equipment condition, identify energy inefficiencies, and report deficiencies requiring corrective action that could impact energy use or NZE performance targets.

HITT Contracting

Building Systems Engineer

With minimal supervision, works with relevant security partners to define security promises and security invariants while factoring in attacker/investigator personas for security monitoring and telemetry needs, ensure threat models and premortems validate upstream and downstream assumptions and security invariants, establish security breach drills and security incident response processes (e.g., impact analysis, containment), and ensure that artificial intelligence (AI) safety features are implemented for the AI production systems tied to a set of product features. Masters Degree in Computer Science or related technical field AND 3+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelors Degree in Computer Science or related technical field AND 5+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python.

DO WHAT YOU LOVE Make your mark on the world’s most used technologies. Develop the next hit mobile application. Pioneer a startup that could be the next big thing. At Microsoft, you choose your path. Headquartered in Redmond, Washington, Microsoft is a top innovator in both the consumer and enterprise technology industry. Just a few of the many things our products do are unleash creativity, connect businesses, and make learning more fun. But our continued success is based on one thing: our employees. We hire amazing, talented people and give them the opportunities—and the tools—to succeed. WHY MICROSOFT? As a Microsoft employee, you’re surrounded by a diverse group of the smartest people in your field. This fosters new ideas, better business results, and creates a dynamic work environment. In the office, you’re constantly challenged and supported by your colleagues. Every day holds something new and exciting. We also offer unparalleled depth and breadth of career opportunities. As an industry leader in multiple fields, working for Microsoft means being able to do whatever you feel passionate about—and being able to make an impact in that field. From day one, we give our employees significant responsibility. This means that you’ll know that you directly contributed to something that has a positive impact on people worldwide. Whether you choose to work in management, dive deep into the newest technology, or explore multiple professions, you’ll find everything you need at Microsoft to drive your career—and to make a difference. WE GET IT – YOU’RE MORE THAN YOUR JOB Everyone works differently and is motivated by different things. We also understand that there’s more to you than your job. That’s why we offer competitive pay and a wide assortment of benefits-- to help you make the most of life at work and away from it. GET THE BALL ROLLING

Microsoft

Software Engineer II - CTJ- POLY

As VAST expands the ways customers deploy the VAST AI OS, we are looking for a deeply technical Partner Solutions Engineer to serve as a subject matter expert for VAST deployments on partner and customer-selected hardware, with a primary focus on the VAST EBox platform. You will help customers understand not simply how to deploy VAST on partner hardware, but how to get the most from the platform: how to size it, what performance to expect, how hardware and configuration choices affect the customer experience, and where customization can unlock additional value for strategic deployments.

Senior Partner Solutions Engineer

Strong expertise in enterprise infrastructure, cloud architecture, AI infrastructure, storage, networking, virtualization, and modern data platforms, with hands-on knowledge of technologies and protocols including Linux, Kubernetes, Docker, VMware, NFS, SMB/CIFS, S3, NVMe/TCP, RDMA, InfiniBand, Ethernet, and distributed systems. A consultative, self-driven mindset with a track record of building scalable programs, technical frameworks, and strategic partnerships that deliver lasting business impact, while maintaining a passion for emerging technologies in AI, cloud infrastructure, containers, networking, and distributed systems.

Field Engineer Jobs in Manassas, VA

Mechanical Construction Engineer System One

Electrical Construction Engineer System One

Civil / Structural Construction Engineer System One

Branch Engineer The Prolift Rigging Company

Senior Solutions Engineer, AI Infrastructure VAST Data

ELSUR Collection Systems Database Engineer (Top Secret) System One

Senior Software Engineer C# System One

Data Engineer System One

Senior Full Stack Engineer System One

C#/.Net Software Engineer System One

Lead Software Engineer System One

AWS Solutions Engineer System One

UAM Everfox Tool Engineer - Senior Level System One

UAM Everfox Tool Engineer - Mid-level System One

Hardware Engineer III System One

Telecommunications Design Engineer System One

Building Systems Engineer HITT Contracting

Software Engineer II - CTJ- POLY Microsoft

Senior Partner Solutions Engineer VAST Data

Senior Systems Engineer - GSI VAST Data

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