Senior Systems Engineer

Systems Technology Research is seeking a talented and experienced Senior Systems Engineer to join our dynamic team in Arlington, VA. In this role, you will be responsible for designing, implementing, and optimizing complex systems and solutions that meet our clients' needs. You will collaborate with cross-functional teams and leverage your expertise to drive…

Role Overview:Join Quartermaster AI as an RF Test and Calibration Engineer, where you will leverage your extensive technical expertise and hands-on experience with advanced radio systems. Your role will focus on enhancing our calibration capabilities for antennas and radio systems, ensuring they meet the highest performance standards.You will be responsible for establishing a robust testing infrastructure at our headquarters and remote locations, and for integrating design-for-test requirements into our hardware development processes. Your insights into production RF test labs will be invaluable as you determine necessary resources, costs, and potential challenges at scale.

Ramboll Group seeks a Senior Electrical Engineer based in Arlington, Virginia. This position takes the lead on project work and plays a key role in supporting sustainable solutions for a diverse client base. Role overview The Senior Electrical Engineer applies technical expertise to guide projects from planning through completion. The focus is on delivering reliable results and enhancing project outcomes through practical engineering solutions. Key responsibilities Lead project tasks and coordinate with teams to meet client needs Apply electrical engineering knowledge to support sustainable approaches Contribute to project planning, design, and delivery Location This role is based in Arlington, Virginia.

Role overview Ramboll is hiring a Senior Electrical Engineer based in Arlington, Virginia. This role centers on designing and delivering electrical systems for a variety of infrastructure projects. The position requires close coordination with colleagues from different disciplines to make sure each project meets industry standards and client expectations. What you will do Design electrical systems for infrastructure projects Implement solutions that match project objectives and technical requirements Work with engineers and specialists from other fields during all phases of a project Contribute to projects that aim to create sustainable and resilient infrastructure Company values Ramboll emphasizes technical expertise and teamwork in its approach to building infrastructure. The company is dedicated to supporting sustainability and resilience in every project.

Job DescriptionComputer World Services Corp. (CWS) is actively looking for skilled professionals to join our engineering team in the National Capital Region (NCR). This role involves planning, designing, testing, building, implementing, deploying, and transitioning cutting-edge Information Technology (IT) solutions tailored to meet diverse customer needs within the NCR. Successful candidates will ensure smooth transitions to innovative solutions that comply with security standards, while also providing operational and maintenance support for development and testing environments, alongside specialized assistance for mission-critical systems and applications.As an Infrastructure Engineer, you will operate at the highest systems level, offering expert guidance and support to functional managers and project teams on complex systems that often span multiple functional areas.

Join espace as a Co-Evaporation Engineer, where you will play a pivotal role in our innovative approach to co-evaporation processes. Your expertise will contribute to the development and optimization of our manufacturing techniques, ensuring high-quality production standards in a dynamic environment.

Join our dynamic team as a Systems Engineer where you will play a crucial role in designing, implementing, and maintaining complex systems to meet the needs of our clients. You will collaborate with cross-functional teams to ensure that our systems are reliable, efficient, and scalable.

Join Our Team as a DevSecOps / Platform EngineerLocation: Arlington, VA — Full TimeAt Obviant, we're at the forefront of revolutionizing the defense sector with our innovative data solutions. As the defense market evolves, so too must the tools that drive it. We're on a mission to create a comprehensive data source of truth and cutting-edge AI tools aimed at enhancing defense acquisition processes. By integrating information from thousands of structured and unstructured sources, we deliver clarity and intelligence on budgets, programs, and organizations to facilitate informed decision-making.Our team is rapidly growing, fueled by strong backing from leading investors and veterans from the Department of Defense and national security sectors. We are united by a common belief that public sector missions are paramount, and we invite you to help us make a difference.Your ImpactAs a DevSecOps / Platform Engineer at Obviant, you will play a pivotal role in constructing and managing the foundational systems that drive our data ingestion pipelines and application infrastructure. You'll be engaged in cloud infrastructure, CI/CD processes, container orchestration, and security automation to ensure our platform remains reliable, scalable, and compliant with the unique requirements of defense users.This hands-on position demands a high level of ownership and collaboration. You will work closely with engineering, data, and product teams to build the infrastructure that supports rapid iteration and mission-critical workflows for government stakeholders. We value speed and simplicity, and aim to create scalable systems that drive operational success.

Join our dynamic team at CannonDesign as a Plumbing & Fire Protection Engineer II. In this role, you will be responsible for designing and implementing plumbing and fire protection systems for a variety of projects, ensuring compliance with industry standards and local codes. Your expertise will contribute to the successful execution of innovative designs.

Role Overview AECOM is hiring a Fire Protection Engineer in Arlington. This role focuses on designing and implementing fire protection systems that meet safety and compliance standards. The position supports a range of facility projects and works closely with other project team members. What You Will Do Design fire protection systems for new and existing facilities Implement solutions that comply with industry codes and regulations Collaborate with multidisciplinary project teams to address safety needs Contribute technical expertise to support project delivery

About TwentyAt Twenty, we are at the forefront of a pivotal mission: safeguarding democracies in the digital era. Our innovative technologies operate at the critical juncture of cyber and electromagnetic domains, where the pace of operations surpasses human capability, and complexity challenges traditional limits. Our team is dedicated to not just resolving issues but creating transformative solutions that have a direct influence on national security. We are practical optimists who recognize the challenges of our mission to protect the United States and its allies, yet we believe that success is within reach.Position OverviewAs a Staff Backend Engineer, you will be responsible for architecting and developing backend systems that convert real-time operational data into essential capabilities. This position entails ownership of core services that must be swift, dependable, and secure, functioning seamlessly in both cloud and on-premises environments. You will make impactful architectural decisions, lead technical execution, and elevate our standards through mentorship and engineering excellence. Collaboration with product, operations, and frontend teams will be key to deploying systems that operate efficiently under real-world conditions.

If you believe that your skills, experience, and aspirations align with this role, we warmly invite you to apply. ABOUT THE POSITIONYou will join our dynamic multi-disciplinary team, collaborating under the guidance of a licensed engineer. Projects may encompass new constructions and renovations in sectors such as education, healthcare, corporate commercial, and science and technology.Be inspired by our engineers in action! Discover how we celebrated Engineers Week 2025 and what makes our team exceptional - LINK YOUR RESPONSIBILITIESDesign HVAC systems, including ductwork and piping, for various building projects. For smaller or less complex projects, work independently; for intricate projects, collaborate under a licensed engineer's supervision. Assist with plumbing and fire protection designs as needed.Calculate heating and cooling loads, and layout and design ductwork and piping using energy modeling software.Create Revit/BIM models for HVAC system construction drawings from schematic design to construction administration phases, including layout, sketches, and detailed drawings. Support Revit/BIM modeling for plumbing and fire protection systems as required.Revise specifications associated with existing or new projects.Specify mechanical equipment such as boilers, chillers, and air handling units.Review shop drawings to ensure compliance with specifications and contract documents.Engage with clients and project team members by participating in Owner, Architect, Construction Administration (OAC) meetings, considering project budgets.Independently research to address emergent issues as needed.Assist in gathering information to respond to RFIs and review change orders during the preparation of construction documents.Conduct site visits to verify existing conditions and monitor construction progress, often requiring a physical walkthrough of the site.May mentor and direct the activities of less experienced staff.Undertake additional duties as assigned.

We are seeking a proactive and detail-oriented Lead Project Information Specialist to join our team at the Information Resource Center (IRC) within Prosidian Consulting. In this pivotal role, you will be responsible for managing and optimizing project information systems, ensuring the integrity and accessibility of data for our clients. Your expertise will guide project teams in utilizing information resources effectively to enhance project outcomes.

Join Ramboll as a Municipal Wastewater Process Design Engineer and play a vital role in delivering innovative solutions for wastewater treatment projects. You will collaborate with a team of experts to design and optimize processes that ensure sustainable and efficient wastewater management.

Are you ready to revolutionize connectivity from space, making it universally accessible, secure, and actionable? Look no further!E-Space is at the forefront of bridging the gap between Earth and space, enabling large-scale deployments of Internet of Things (IoT) solutions and services. We are developing an advanced low Earth orbit (LEO) satellite system that will transform the design, economics, manufacturing, and service delivery associated with traditional satellite and terrestrial IoT systems.Our culture is intentional, driven by curiosity, and fully committed to innovating space-based communications while delivering actionable intelligence that enhances global economies, protects our planet, and improves the quality of life for all.Position: Composites Manufacturing EngineerWe are looking for a talented Composites Manufacturing Engineer to join our dynamic team. This role is crucial for the development, scaling, and optimization of advanced composite structures specifically for aerospace applications. The ideal candidate will possess robust technical expertise in composite materials and processes, paired with hands-on manufacturing experience in a fast-paced production setting.

Join our dynamic team at raft as a Senior Software Engineer, where you will lead innovative software projects and develop scalable applications. We are seeking a passionate engineer who thrives in a collaborative environment and is eager to solve complex challenges.

About Us:At Quartermaster AI, we are dedicated to ensuring that the ocean is a secure and sustainably managed resource for everyone. Through the use of innovative artificial intelligence, distributed sensing technologies, and robust data systems, we are unlocking capabilities that were previously unattainable. Our advanced open-ocean systems allow vessels and coastal infrastructures to sense, compute, and communicate effectively, enhancing maritime domain awareness for those who need it most.Job Description:We are on the lookout for a seasoned RF Design Electrical Engineer with over 7 years of experience to design, develop, and maintain secure, resilient, and scalable data systems that support mission-critical maritime and defense applications.This role demands extensive expertise in RF and analog hardware design. The ideal candidate will possess experience collaborating with government contractors, military systems, or within regulated environments, and have a strong understanding of the operational requirements for real-time, high-availability data platforms.Experience with GIS, streaming architectures, software-defined radio (SDR) systems, radar pipelines, maritime domain awareness systems, or military data management will be highly regarded.Key Responsibilities:Design, simulate, and develop custom RF circuits and SDR hardware, encompassing complete RF signal chains (LNAs, PAs, mixers, filters, oscillators, ADC/DAC, antennas).Conduct RF modeling, link budgets, and system-level performance evaluations using industry-standard simulation tools.Create and optimize high-frequency, multi-layer PCBs ensuring signal integrity, impedance control, EMI/EMC compliance, and thermal performance.Prototype, test, validate, and troubleshoot RF systems utilizing lab instrumentation (VNA, spectrum analyzer, signal generator, oscilloscope).Integrate RF front-end hardware with SDR platforms, FPGAs, and embedded systems.Lead design reviews, mentor junior engineers, and maintain comprehensive technical documentation.Ensure adherence to regulatory standards and support rugged deployments in maritime, airborne, or tactical settings.Drive continuous enhancements in performance, efficiency, manufacturability, and reliability.

Join AECOM as a Senior Electrical Engineer in Arlington, VA, and be a part of our mission to deliver a better world.In this pivotal role, you will:Lead and develop teams to successfully complete projects of various sizes.Engage with both internal and external clients to ensure project requirements are met.Act as the Discipline Leader for our Arlington team.Design electrical power and lighting systems for diverse projects.Make significant design recommendations and decisions.Plan design work, estimate costs, and prepare schedules, assigning tasks to junior engineers.Coordinate with other disciplines including mechanical, communications, structural, ITS, civil, and equipment suppliers.Ensure accurate project documentation and maintain comprehensive design data for future reference.Provide guidance and review correspondence prepared by junior team members.Analyze staffing requirements, troubleshoot issues, and prepare reports.Participate in project meetings and delegate tasks as necessary.Meet with clients, prepare proposals, and create presentations while fostering strong client relationships.Lead efforts in project quality control.Utilize knowledge of design techniques, tools, and principles to produce technical plans and drawings.Manage multiple projects simultaneously while maintaining high standards.Represent the organization and maintain communication with stakeholders and related organizations.

About TwentyAt Twenty, we're tackling one of the most pressing challenges of our time: safeguarding democracies in the digital era. We create innovative technologies that function at the crossroads of the cyber and electromagnetic domains, where operational speed surpasses human perception and complexity defies traditional limits. Our team doesn't merely address issues – we achieve transformative results that have a direct effect on national security. We are pragmatic optimists who recognize that while our mission to protect America and its allies is demanding, success is within reach.Position OverviewIn this role, you will take charge of developing and maintaining the security infrastructure that ensures the safety of Twenty's engineering systems without hindering engineering productivity. Your responsibilities will encompass runtime security, access control, secrets management, compliance, and CI/CD hardening, with a focus on making security the easiest route to take. You will partner closely with our engineering teams to design secure-by-default architectures and create the tools and automation that empower developers to operate swiftly without compromising security. You will report to the VP of Engineering and work collaboratively across our product teams.Ideal CandidateYou view security as an enabler for engineering, not an obstacle.You take full responsibility from identifying risks to designing controls and implementing solutions.You apply sound judgment to decision-making, knowing when to enforce strict controls and when flexibility is necessary to encourage adoption.You communicate effectively with both technical and non-technical stakeholders, translating risk into understandable terms.You prefer automation over policy; if a manual step is required for security, you see it as a flaw.You maintain high standards for reliability and auditability in the systems you create.You are self-motivated and excel in a dynamic environment where you are defining the function.Your ResponsibilitiesManage runtime security and vulnerability assessment across cloud and container environments, including triage, prioritization, and remediation tracking.Design and implement identity and access management (IAM) strategies across AWS and internal systems, ensuring least-privilege access by default.Oversee secrets and credentials management, including policies, tooling, rotation, and developer workflows that facilitate secure practices.

Your New RoleWe are seeking a talented Resident Engineer to lead and manage various construction projects of varying complexity. In this role, you will apply standard construction techniques and engineering principles while executing a series of related tasks. You will collaborate with team members, assess project needs, and apply your engineering judgment to adapt and modify designs as necessary.Key ResponsibilitiesLeverage your engineering or construction management education to analyze project engineering concepts.Oversee construction teams to guarantee adherence to specified procedures, methods, and materials as outlined in contract documents, guiding superintendents, project managers, and foremen throughout the project lifecycle.Utilize your technical expertise to ensure project components satisfy engineering requirements as per the contract.Conduct engineering calculations throughout the project for parameters such as pump performance, concrete mechanics, pipeline hydraulics, and electrical systems.Prepare cash flow calculations based on critical path schedules and value schedules to assist project owners in budgeting effectively.