NewScientist / Engineer - Research & Development - Contract TalentBurst, Inc.Scientist / Engineer - Research & Development - ContractMarlborough, MAPolymer & Organic SynthesisPerform hands-on polymer and/or organic synthesis of monomers, oligomers, and polymers at lab scale (typically 100 mL–20 L), following established procedures and safety protocols. Analytical CharacterizationOperate and maintain key analytical instruments such as GPC, HPLC, UPLC, NMR and related chromatography tools; perform routine calibrations and basic troubleshooting.
NewSoftware Development Engineer JobotSoftware Development EngineerBoston, MA$65–$80 / hourDevelopers at this level are building greater independence, taking ownership of small to medium-sized work items, and strengthening their core engineering skills across multiple application layers, including user interfaces, services, APIs, and data. Our teams include professionals across software engineering, product development, clinical informatics, research, and healthcare technology who share a commitment to reducing complexity and improving outcomes for patients and providers.
NewSenior Manufacturing Engineer RJS AssociatesSenior Manufacturing EngineerBillerica, MAFull timeManufacturing Engineer will monitor production and testing, assist in troubleshooting manufacturing issues, and drive continuous improvement efforts throughout the process. Manufacturing Engineer your primary responsibility will be to take ownership of one or more product lines and manage that product line’s manufacturing process from beginning to end.
Senior Mechanical Engineer - Product Development Michael Page USASenior Mechanical Engineer - Product DevelopmentBillerica, MA$130,000–$160,000 / yearFull timeKnown for tackling complex clinical challenges, the company invests heavily in R&D, values engineering rigor, and fosters a hands‑on, collaborative culture where technical excellence is recognized and rewarded. As the Senior Mechanical Engineer, Product Development, you will lead the design and development of innovative electromechanical medical products used in high impact clinical applications.
NewSenior Software Engineer - Profiles, Lists and Segments KlaviyoSenior Software Engineer - Profiles, Lists and SegmentsBoston, MA$148,000–$222,000 / yearPartnering closely with product managers, data scientists, and other platform teams, you’ll help define scope, translate complex data and UX problems into practical implementations, and build intuitive workflows that give customers confidence in their audiences. In addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility.
NewSenior Manufacturing Engineer Poly6Senior Manufacturing EngineerBurlington, MA$105,000–$160,000Create, oversee, and maintain detailed process SOP documentation, including work instructions, process flow diagrams, and technical reports, using tools like Microsoft Office Suite and ERP systems (e.g., Oracle). We deliver high-performance products that meet the rigorous demands of quality, durability, and precision required for next-generation turbine engines while helping reduce greenhouse gas emissions.
NewGeneral/Interdisciplinary Engineer, Senior - Secret DCS CorporationGeneral/Interdisciplinary Engineer, Senior - SecretBedford, MA$90,220–$170,000 / yearConduct systems architectural analyses to include system design/design feasibility and state-of-the-art assessment to Produce architectures, document planned and existing systems, determine deficiencies, develop alternatives, recommend solutions, and support development of a plan to implement the chosen solution per acquisition and sustainment system engineering processes. Analysis of Alternatives (AoA), Systems Engineering Plan (SEP)…), systems review and analysis with written reporting, briefing, and artifact development as required for all of the technical specialty areas defined in this section; and the planning and execution of all necessary technical reviews, assessments, and interchange meetings (e.g.
Systems Engineer, Senior DCS CorporationSystems Engineer, SeniorBedford, MA$90,220–$145,000 / yearThe Aerospace Management Systems Division programs, develops, delivers, and sustains air traffic management, CNS/ATM avionics expertise, and weather sensing and forecast capabilities, enabling military, civil, allied, and Foreign Military Sales customers to achieve their mission. Develop and maintain system architectures, interface definitions, and Model-Based Systems Engineering (MBSE) artifacts supporting Air Traffic Control (ATC), Command & Control (C2), communications, networking, tactical data links, and radio systems.
Systems Engineer, Junior - TS DCS CorporationSystems Engineer, Junior - TSBedford, MA$73,160–$115,000 / yearThe C2ISR Division provides worldwide life cycle support across the spectrum of the C2ISR capabilities based enterprise; including supply, distribution, materiel management, acquisition, system engineering and maintenance, financial planning and budgeting, security, flight test, and contracting functions. EPASS support is required to execute the major GNS programs in support of the C2ISR Division, to include: AF DCGS Network Infrastructure Transformation (NIT), Extended Tether Program (ETP), and Global Command and Control System – Air Force Infrastructure (GCCS-AF (I)).
NewSenior Engineer Constellation EnergySenior EngineerAndover, MA$138,600–$154,000Has completed assigned skills and knowledge development training (applicable Advanced Engineering, EPRI, and Constellation University training or industry provided training) to develop expert level of knowledge in designated areas. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geothermal, hydro, wind and solar facilities, with the generating capacity to power the equivalent of 27 million homes.
NewSenior Staff Electrical Engineer SaabSenior Staff Electrical EngineerBrockton, MA$127,300–$165,500Saab Inc., Autonomous and Undersea Systems division is seeking an innovative and experienced Senior Staff Electrical Engineer to support our growing team working on Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs). Our AUVs, UUVs, and ROVs span AC power (shore and charging equipment), DC power (battery systems and conversion), sensor integration, and electromechanical (propulsion, motors, servos, actuators) integration.
Thermal Design Engineer Wakefield Thermal Solutions, Inc.Thermal Design EngineerNashua, NH$117,925–$117,925 / yearESSENTIAL DUTIES AND RESPONSIBILITIES: • In support of the pioneer status for the Wakefield Thermal Brand, develop targeted products for various market segments and introduce these new products into distribution sales channel, including the identification of new products, and expansion of existing products. SUMMARY: Reporting to the Director of Engineering, the Thermal Design Engineer will be a technical resource for both internal and external stakeholders as it relates to the design of our various, highly technical product offerings in the thermal design space.
NewStaff Machine Learning Engineer SamsaraStaff Machine Learning EngineerBoston, MARemoteYou believe customers are more than a number: Samsara engineers enjoy a rare closeness to the end user and you will have the opportunity to participate in customer interviews, collaborate with customer success and product managers, and use metrics to ensure our work is translating into better customer outcomes. • You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact—helping to keep the lights on, get food into grocery stores, and most importantly, ensure workers return home safely.
NewSr. Lead AI Engineer KlaviyoSr. Lead AI EngineerBoston, MA$216,000–$324,000 / yearYou’ll own architecture and execution for complex, distributed backend systems; guide other engineers through design and implementation; and partner closely with product, machine learning, and data science to turn AI ideas into reliable, scalable production capabilities. You’ve built and shipped generative or agentic AI applications (e.g., LLM‑backed flows, tool‑using agents, retrieval‑augmented systems) and are comfortable with prompt design, few‑shot approaches, fine‑tuning, and evaluation.
Senior Engineer, System Planning Eversource Energy Service CompanySenior Engineer, System PlanningWestwood, MA$156,936–$165,000 / yearFull timeIn order to complete the above-mentioned tasks, the following skills and experience is required: Experience with transmission planning, software simulations, IBR modeling, and transient analysis; Experience applying electrical theory to planning an electric power supply system; Experience using power system modeling and simulation software for steady state power flow, voltage, short circuit, stability, and electromagnetic transients; Experience with HVDC and inverter-based resource parameters and modeling, including simulation experience in weak grid systems; Experience with PSSE and PSCAD; Experience with Python and VBA; Experience with Powertech (TSAT, VSAT), ASPEN Oneliner, EMTP (ATP), TARA, and PI Processbook; Experience applying NERC TPL, NPCC, and ISO-NE planning procedures. Requires a Bachelor's degree or foreign equivalent in Electrical Engineer or a related field, and at least five years of experience as a Planning Engineer, Research Assistant, or related occupation.
NewSenior Civil/Structural Engineer LeidosSenior Civil/Structural EngineerBoston, MA$73,450–$132,775We are seeking a Licensed Senior Civil/Structural Engineer with 5+ years of experience within the utility industry working directly for a utility or consulting company, doing design engineering and reviews. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
NewFM Approvals Engineering Quality Auditor II FMFM Approvals Engineering Quality Auditor IINorwood, MA$74,080–$106,500The role of the Quality Auditor is expected to independently schedule and conduct conformity assessment audits at customer locations. This role will support a team of dedicated auditors who focus on conducting customer at location on-site compliance audits.
NewSr. Product Engineer – Web Services EsriSr. Product Engineer – Web ServicesBoston, MARemote$93,600–$159,328 / yearExperience working with ArcGIS applications and technologies (such as ArcGIS Hub, ArcGIS Map Viewer, ArcGIS REST APIs, ArcGIS API for Python, ArcGIS Maps SDKs). You will act as a service owner and trusted decision‑maker, shaping priorities, balancing tradeoffs, and ensuring our web services remain reliable, scalable, and valuable to customers over time.
NewSenior Software Engineer - Customer Agent KlaviyoSenior Software Engineer - Customer AgentBoston, MA$148,000–$222,000 / yearIn addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. The Customer Agent team is building one of Klaviyo’s most ambitious and strategic product areas: an extensible AI platform that enables brands to deliver personalized, autonomous customer experiences across channels like chat, email, SMS, and beyond.
NewPower Electronics Engineer Aminov Search PartnersPower Electronics EngineerConcord, MA$140,000–$140,000 / yearThis role demands a deep understanding of electrical engineering, specializing in power systems design, and offers an opportunity to work on cutting-edge R&D projects, such as electromechanical actuation systems and high-powered acoustic transmit arrays. Ideal candidates should possess a Bachelor's, Master's, or PhD in Electrical Engineering, matched with hands-on experience in high voltage/power systems, DC/DC converters, and prototype testing.
Account Engineer, Fire & Natural Hazards FMAccount Engineer, Fire & Natural HazardsNorwood, MA$98,000–$141,000The AE candidate will need to develop a deep understanding of our clients' business, operations, and exposures to evaluate the nature, probability, and magnitude of loss potentials and build client-specific risk improvement strategies that clearly demonstrate FM's value-add. By aligning FM products and services to each client's unique needs and partnering with Account Managers to produce cohesive, client-facing deliverables, the AE will reinforce a tailored account strategy and the tangible value FM brings to each client's organization.
NewStaff Engineer (Product) LaterStaff Engineer (Product)Boston, MARemote$175,000–$250,000 / yearBy combining trusted insight with expert guidance, Later removes guesswork from influencer marketing, enabling brands to choose the right creators, execute fully managed campaigns, and drive meaningful growth across awareness, engagement, and revenue. Built on a native, AI-powered platform and more than a decade of proprietary data—including billions of social interactions, impressions, and $2.4B+ in verified influencer-driven purchases—Later helps teams understand what will work before they launch.
NewStaff Engineer (Platform) - Remote LaterStaff Engineer (Platform) - RemoteBoston, MARemote$175,000–$250,000 / yearBy combining trusted insight with expert guidance, Later removes guesswork from influencer marketing, enabling brands to choose the right creators, execute fully managed campaigns, and drive meaningful growth across awareness, engagement, and revenue. Built on a native, AI-powered platform and more than a decade of proprietary data—including billions of social interactions, impressions, and $2.4B+ in verified influencer-driven purchases—Later helps teams understand what will work before they launch.
NewStaff Engineer (Platform) LaterStaff Engineer (Platform)Boston, MARemote$175,000–$250,000 / yearBy combining trusted insight with expert guidance, Later removes guesswork from influencer marketing, enabling brands to choose the right creators, execute fully managed campaigns, and drive meaningful growth across awareness, engagement, and revenue. Built on a native, AI-powered platform and more than a decade of proprietary data—including billions of social interactions, impressions, and $2.4B+ in verified influencer-driven purchases—Later helps teams understand what will work before they launch.
NewSenior Engineer (Product) LaterSenior Engineer (Product)Boston, MARemote$125,000–$205,000 / yearBy combining trusted insight with expert guidance, Later removes guesswork from influencer marketing, enabling brands to choose the right creators, execute fully managed campaigns, and drive meaningful growth across awareness, engagement, and revenue. Built on a native, AI-powered platform and more than a decade of proprietary data—including billions of social interactions, impressions, and $2.4B+ in verified influencer-driven purchases—Later helps teams understand what will work before they launch.
NewSenior Engineer (Product) - Remote LaterSenior Engineer (Product) - RemoteBoston, MARemote$125,000–$205,000 / yearBy combining trusted insight with expert guidance, Later removes guesswork from influencer marketing, enabling brands to choose the right creators, execute fully managed campaigns, and drive meaningful growth across awareness, engagement, and revenue. Built on a native, AI-powered platform and more than a decade of proprietary data—including billions of social interactions, impressions, and $2.4B+ in verified influencer-driven purchases—Later helps teams understand what will work before they launch.
NewStaff Engineer (Product) - Remote LaterStaff Engineer (Product) - RemoteBoston, MARemote$175,000–$250,000 / yearBy combining trusted insight with expert guidance, Later removes guesswork from influencer marketing, enabling brands to choose the right creators, execute fully managed campaigns, and drive meaningful growth across awareness, engagement, and revenue. Built on a native, AI-powered platform and more than a decade of proprietary data—including billions of social interactions, impressions, and $2.4B+ in verified influencer-driven purchases—Later helps teams understand what will work before they launch.
NewSenior AI Engineer - Customer Agent KlaviyoSenior AI Engineer - Customer AgentBoston, MA$148,000–$222,000 / yearIn addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. We have a big opportunity to build state-of-the-art AI and machine learning technologies at Klaviyo to power our products and develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business.
NewSenior Software Engineer, Agent Platform KlaviyoSenior Software Engineer, Agent PlatformBoston, MA$148,000–$222,000 / yearIn addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. We have a big opportunity to build state-of-the-art AI and machine learning technologies at Klaviyo to power our products and develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business.
Senior Systems Engineer The Computer Merchant, LtdSenior Systems EngineerDedham, MA$80–$91 / hourContractorWhile an hourly range is posted for this position, an eventual hourly rate is determined by a comprehensive salary analysis which considers multiple factors including but not limited to: job-related knowledge, skills and qualifications, education and experience as compared to others in the organization doing substantially similar work, if applicable, and market and business considerations. As a Systems Engineer, working on the Encryptor Manager, you'll be a member of a cross functional team responsible for developing mission critical Cybersecurity Manager Applications for a rapidly growing product line.
NewSystem Integration Engineer - Remote Teoresi GroupSystem Integration Engineer - RemoteBoston, MARemoteAt Teoresi, we specialize in supporting companies in creating projects using cutting-edge technologies such as self-driving cars and nanotechnology for the medical field. Teoresi Inc is an international Group, with offices in Europe and United States, that acts as an engineering partner to customers’ product and process development.
NewSenior Software Engineer - Route Execution SamsaraSenior Software Engineer - Route ExecutionBoston, MARemoteYou believe customers are more than a number: Samsara engineers enjoy a rare closeness to the end user and you will have the opportunity to participate in customer interviews, collaborate with customer success and product managers, and use metrics to ensure our work is translating into better customer outcomes. • You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact—helping to keep the lights on, get food into grocery stores, and most importantly, ensure workers return home safely.
NewFM Approvals Electrical Engineer FMFM Approvals Electrical EngineerNorwood, MA$94,000–$134,000As a trusted leader in third-party certification, we help manufacturers bring safe, compliant, and high-performing products to market. Here, you’ll grow your technical expertise, collaborate with industry experts, and play a key role in advancing global safety.
Substation Senior Civil/Structural Engineer LeidosSubstation Senior Civil/Structural EngineerBoston, MARemote$92,300–$166,850If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
NewSenior Data Engineer - Agentic AI Engineering BoomiSenior Data Engineer - Agentic AI EngineeringBoston, MAThis role focuses on building and operating scalable, high-quality data infrastructure that powers agentic AI systems, including LLM-based agents, multi-agent workflows, and tool-using AI systems. • Architect and build scalable, secure, and observable data infrastructure to power LLM-based agents, multi-agent systems, and tool-using AI workflows.
Engineer, Senior Constellation EnergyEngineer, SeniorCanton, MA$118,800–$132,000Recommend equipment, new concepts and techniques to improve performance, simplify construction, reduce costs, correct design or material flaws, or comply with changes in codes or regulations. As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
NewStaff Software Engineer, Security & Privacy AbnormalStaff Software Engineer, Security & PrivacyBoston, MADistributed systems expert – you bring deep experience designing and operating large-scale distributed systems, and have partnered with security teams to build secure-by-default solutions. Were looking for a distributed systems expert who has worked closely with security teams — someone who can drive Product Security at scale and translate that into clear, executable technical roadmaps.
Manufacturing Process Engineer- Electronics- Woburn, MA Michael Page USAManufacturing Process Engineer- Electronics- Woburn, MAWoburn, MA$90,000–$105,000 / yearFull timeThe Manufacturing Process Engineer will partner closely with design engineers, scientists, technicians, and production teams to ensure new products are designed for manufacturability and successfully transitioned into production. This individual will also play a key role in continuous improvement efforts, troubleshooting production issues, and supporting day‑to‑day manufacturing operations.
NewSenior Staff Engineer, R&D Tooling - Plastics - Nashua, NH Michael Page USASenior Staff Engineer, R&D Tooling - Plastics - Nashua, NHNashua, NH$120,000–$135,000 / yearFull timeThe culture values collaboration, continuous improvement and practical problem‑solving, offering engineers the opportunity to work closely with manufacturing, suppliers and R&D teams in a hands‑on, technically challenging setting. Reporting directly into the Engineering Manager, you will be responsible for the following: Lead the technical development and ongoing improvement of R&D tooling across multiple manufacturing processes.
Account Engineer, Boiler & Machinery FMAccount Engineer, Boiler & MachineryNorwood, MA$98,000–$141,000Must possess a strong understanding of asset integrity principles in complex process environments, including the reliability and integrity of critical equipment such as steam and gas turbines, electrical generators, rotating equipment, boilers, and piping systems, along with electrical systems, and how these systems, including their associated control and protection elements, interact and impact one another. Critical to the role is the ability to influence key stakeholders so they become more resilient against hazards and exposures, ultimately developing into a trusted advisor through sustainable risk improvement, strong communication skills, engineering expertise, and business acumen.
NewInformatics Engineer Prime Medicine, Inc.Informatics EngineerCambridge, MA$134,000–$163,000 / yearDesign and build the data platform connecting NGS instruments, laboratory informatics systems (Benchling), and AWS cloud compute; covering automated ingestion, provenance tracking, scalable storage, and observability. Ship AI-powered and agentic capabilities such as RAG over internal scientific data, agentic workflows with human-in-the-loop review, and internal copilots that streamline routine workflows across the organization connecting both science and business needs.
R&D Engineer - Project Engineering - Nashua, NH Michael Page USAR&D Engineer - Project Engineering - Nashua, NHNashua, NH$80,000–$95,000 / yearFull timeThis role sits within an R&D team focused on developing and improving engineered products by translating customer needs into practical, manufacturable solutions. You will lead technical projects, create and test prototypes, and partner closely with operations, quality, and manufacturing teams to deliver robust outcomes.
NewSystems Engineer, Digital for Research and Technical Development ModernaTXSystems Engineer, Digital for Research and Technical DevelopmentCambridge, MassachusettsWe are proud to have been recognized as a Science Magazine Top Biopharma Employer, a Fast Company Best Workplace for Innovators, and a Great Place to Work in the U.S. If you want to make a difference and join a team that is changing the future of medicine, we invite you to visit modernatx.com/careers to learn more about our current opportunities. Cross-Functional Collaboration: Serve as a trusted technical advisor to laboratory and digital stakeholders, translating scientific workflows and business requirements into scalable engineering solutions while clearly articulating technical trade-offs, risks, and constraints.
Scientist / Engineer - Research & Development KYYBA, IncScientist / Engineer - Research & DevelopmentMarlborough, MAFounded in 1998 and headquartered in Farmington Hills, MI, Kyyba has a global presence delivering high-quality resources and top-notch recruiting services, enabling businesses to effectively respond to organizational changes and technological advances. • Over time, and as business needs allow, cross-train in other workstreams as needed to support the team and organization growth such as filtration, formulation, Dry lab and Fab work, etc.
Scientist / Engineer - Research & Development TalentBurst, Inc.Scientist / Engineer - Research & DevelopmentMarlborough, MAPolymer & Organic SynthesisPerform hands-on polymer and/or organic synthesis of monomers, oligomers, and polymers at lab scale (typically 100 mL–20 L), following established procedures and safety protocols. Analytical CharacterizationOperate and maintain key analytical instruments such as GPC, HPLC, UPLC, NMR and related chromatography tools; perform routine calibrations and basic troubleshooting.
Scientist / Engineer - Research & Development TechDigital CorporationScientist / Engineer - Research & DevelopmentMarlboro, MAAnalytical Characterization• Operate and maintain key analytical instruments such as GPC, HPLC, UPLC, NMR and related chromatography tools; perform routine calibrations and basic troubleshooting.• Perform additional testing and characterization as needed (e.g., GC, UV-Vis, FT-IR, basic thermal analysis, titrations, % solids, viscosity) to support material qualification and process development.• Over time, and as business needs allow, cross-train in other workstreams as needed to support the team and organization growth such as filtration, formulation, Dry lab and Fab work, etc.• Participate in regular team meetings, share results, and provide input on experimental design and next steps.
Postdoctoral Scientist, Amazon Robotics Research and AI Development Amazon.com IncPostdoctoral Scientist, Amazon Robotics Research and AI DevelopmentMAYou will follow your multi-agent path planning, dynamic OT, and X-AI projects through the entire life cycle of design, implementation, evaluation, analysis, and will communicate your findings and results through publications in top-tier academic venues. On a typical day in this role, you will work to progress your research projects, meet with engineering, systems, and solutions stakeholders, brainstorm with other scientists on the team, and participate in team processes.
Senior Research Engineer - Lithium-ion Battery and Data Center Safety Factory Mutual Insurance CoSenior Research Engineer - Lithium-ion Battery and Data Center SafetyNorwood, MAThe ultimate goal is to support industrial property loss prevention by conducting high-quality research focused on thermal and fire hazards associated with batteries, with a near-term emphasis on lithium-ion systems used in data center and renewable energy applications. Established nearly two centuries ago, FM is a leading mutual insurance company whose capital, scientific research capability and engineering expertise are solely dedicated to property risk management and the resilience of its policyholder-owners.
Senior Engineer, Research Science and Engineering Analog DevicesSenior Engineer, Research Science and EngineeringWilmington, MassachusettsADI combines analog, digital, AI, and software technologies into solutions that combat climate change, reliably connect humans and the world, and help drive advancements in automation and robotics, mobility, healthcare, energy and data centers. For positions requiring access to technical data, Analog Devices, Inc. may have to obtain export licensing approval from the U.S. Department of Commerce - Bureau of Industry and Security and/or the U.S. Department of State - Directorate of Defense Trade Controls.