Optical Engineer nLIGHTOptical EngineerCamas, WA$85,000–$95,000 / yearApply theoretical and experimental understanding of lasers, fiber optics, and opto-mechanical design to the development of high-power fiber lasers and components. Strong laboratory skills including optical testing and characterization of high-power lasers or complex optical sub-assemblies.
Senior Optical Engineer nLIGHTSenior Optical EngineerCamas, WA$90,000–$115,000 / yearApply theoretical and experimental understanding of lasers, fiber optics and opto-mechanical design to the development of high-power fiber amplifiers for military/defense applications. Design and develop fiber laser systems and critical components, including seed lasers, amplifiers, and opto-mechanical sub-systems.
Optical Test Engineer Teledyne TechnologiesOptical Test EngineerWilsonville, OregonOur products include advanced surveillance sensors, unmanned air and ground vehicles, sensing devices used to detect chemicals, biological agents, radiation and explosives, and a host of other solutions that help warfighters, first responders, and search-and-rescue teams do their jobs better. These markets include aerospace and defense, factory automation, air and water quality environmental monitoring, electronics design and development, oceanographic research, deepwater oil and gas exploration and production, medical imaging and pharmaceutical research..
Optical Coating Shift Engineer 7pm-7am Applied Optoelectronics IncOptical Coating Shift Engineer 7pm-7amHillsboro, ORCheck daily coating results and fine tune the equipment setting for next run by optimizing process parameters - e.g., Gas flow, substrate temperature, rate of deposition to achieve desirable properties of films. We are currently seeking a highly motivated and experienced Optical Coating Shift Engineer to operate optical coating equipment for fabrication of thin film semiconductors.
NewOptical Transport Engineer (IXC) Adex CorporationOptical Transport Engineer (IXC)Portland, ORProvision Optical IXC circuits using Cisco Prime Optical (CPO) or Cisco Transport Controller (CTC) and configure ancillary equipment for delivery of sub-rate circuits (e.g., RAD RICi-16/EGATE-100, Cisco ASR1002/1001-X router port configurations including T3/T1 SIP/SPA, DNX-11/88 port configurations, etc.). Work directly with IXC Deployment Team, IXC Engineering, Telco circuit and network design engineers, and Telco Carrier Provisioning/Circuit designs with team personnel to accurately document circuit designs on Optical networks.
Fiber Optical Repair Technician EOSFiber Optical Repair TechnicianPortland, OR$25.48–$32.69 / hourEOS IT Solutions is a Global Technology and Logistics company, providing Collaboration and Business IT Support services to some of the world's largest industry leaders, delivering forward-thinking solutions based on multi-domain architecture. The Fiber Optical Repair Technician is responsible for the repair, restoration, and maintenance of fiber optic infrastructure, including splicing, testing, and troubleshooting of both single-mode and ribbon fiber cables.
Technical Engagement Manager - Optical Films And CD KLA CorporationTechnical Engagement Manager - Optical Films And CDHillsboro, OR$144,800–$246,200 / yearOur expert teams of physicists, engineers, data scientists and problem-solvers work together with the world's leading technology providers to accelerate the delivery of tomorrow's electronic devices. Experience working across global or highly matrixed organizations, driving alignment across engineering, marketing, account, and service teams.
Technical Engagement Manager - Optical Films and CD KLA CorpTechnical Engagement Manager - Optical Films and CDHillsboro, OR$144,800–$246,200 / yearOur expert teams of physicists, engineers, data scientists and problem-solvers work together with the world's leading technology providers to accelerate the delivery of tomorrow's electronic devices. Experience working across global or highly matrixed organizations, driving alignment across engineering, marketing, account, and service teams.
NewFiber Optical Service Lead EOSFiber Optical Service LeadHillsboro, ORWorking closely with customers, field engineers and internal stakeholders, the Service Operations Lead manages operational priorities, coordinates on-call resources, monitors service performance and drives continuous improvement across the service function. EOS IT Solutions is a Global Technology and Logistics company, providing Collaboration and Business IT Support services to some of the world's largest industry leaders, delivering forward-thinking solutions based on multi-domain architecture.
Design Engineer II Sig Sauer Inc.Design Engineer IITualatin, ORWorking both independently and in a team environment, the Design Engineer II will collaborate with Manufacturing Engineers, Electrical Engineers, Optical Engineers, Quality Engineers, Buyers, Product Managers, Project Managers, Test Technicians, Inspectors, and Assembly staff. Today, SIG SAUER is synonymous with industry-leading quality and innovation which has made it the brand of choice amongst the U.S. Military, the global defense community, law enforcement, competitive shooters, hunters, and responsible citizens.
Design Engineer II SigSauerDesign Engineer IITualatin, ORPart timeWorking both independently and in a team environment, the Design Engineer II will collaborate with Manufacturing Engineers, Electrical Engineers, Optical Engineers, Quality Engineers, Buyers, Product Managers, Project Managers, Test Technicians, Inspectors, and Assembly staff. Today, SIG SAUER is synonymous with industry-leading quality and innovation which has made it the brand of choice amongst the U.S. Military, the global defense community, law enforcement, competitive shooters, hunters, and responsible citizens.
Design Engineer II SIG SAUER IncDesign Engineer IITualatin, ORWorking both independently and in a team environment, the Design Engineer II will collaborate with Manufacturing Engineers, Electrical Engineers, Optical Engineers, Quality Engineers, Buyers, Product Managers, Project Managers, Test Technicians, Inspectors, and Assembly staff. Today, SIG SAUER is synonymous with industry-leading quality and innovation which has made it the brand of choice amongst the U.S. Military, the global defense community, law enforcement, competitive shooters, hunters, and responsible citizens.
Design Engineer II SIG SAUER CareersDesign Engineer IITualatin, OregonWorking both independently and in a team environment, the Design Engineer II will collaborate with Manufacturing Engineers, Electrical Engineers, Optical Engineers, Quality Engineers, Buyers, Product Managers, Project Managers, Test Technicians, Inspectors, and Assembly staff. Today, SIG SAUER is synonymous with industry-leading quality and innovation which has made it the brand of choice amongst the U.S. Military, the global defense community, law enforcement, competitive shooters, hunters, and responsible citizens.
Data Center Engineer - Oregon Telefonaktiebolaget LM EricssonData Center Engineer - OregonPortland, ORThe ideal candidate expects and maintains high-quality execution from the team across installations, migrations, remediation, break/fix, and remote hands services, utilizing their strong hands‑on technical expertise. Employees will also receive company credits in an amount equal to the cost of basic life insurance and basic accidental death and dismemberment coverage, as well as short-term and long-term disability coverage.
Data Center Engineer - Portland Telefonaktiebolaget LM EricssonData Center Engineer - PortlandPortland, ORThe ideal candidate expects and maintains high-quality execution from the team across installations, migrations, remediation, break/fix, and remote hands services, utilizing their strong hands‑on technical expertise. Employees will also receive company credits in an amount equal to the cost of basic life insurance and basic accidental death and dismemberment coverage, as well as short-term and long-term disability coverage.
System Engineer KLA CorporationSystem EngineerHillsboro, OR$115,900–$197,000 / yearEnabling the movement towards advanced chip design, KLA's Global Products Group (GPG), which is responsible for creating all of KLA's metrology and inspection products, is looking for the best and the brightest research scientist, software engineers, application development engineers, and senior product technology process engineers. Our Systems Engineers are the driving force behind the development process-combining deep technical expertise, strong problem-solving skills, and a clear understanding of customer needs to deliver complex, high-performance solutions.
Applications Development Engineer KLAApplications Development EngineerHillsboro, OregonEnabling the movement towards advanced chip design, KLA's Global Products Group (GPG), which is responsible for creating all of KLA’s metrology and inspection products, is looking for the best and the brightest research scientist, software engineers, application development engineers, and senior product technology process engineers. The FaST division is committed to support our customers to achieve performance entitlement of our solution and we effectively partner with our customers from their early research and development phase to the high volume in-line manufacturing implementation specific for their process needs.
System Engineer KLA CorpSystem EngineerHillsboro, OR$115,900–$197,000 / yearEnabling the movement towards advanced chip design, KLA''s Global Products Group (GPG), which is responsible for creating all of KLA's metrology and inspection products, is looking for the best and the brightest research scientist, software engineers, application development engineers, and senior product technology process engineers. Our Systems Engineers are the driving force behind the development process-combining deep technical expertise, strong problem-solving skills, and a clear understanding of customer needs to deliver complex, high-performance solutions.
Principal Systems Engineer Onto Innovation IncPrincipal Systems EngineerHillsboro, OROnto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: 3D metrology spanning the chip from nanometer-scale transistors to micron-level die-interconnects; macro defect inspection of wafers and packages; metal interconnect composition; factory analytics; and lithography for advanced semiconductor packaging. We are seeking a highly experienced Principal Systems Engineer to lead the architecture, integration, and validation of complex systems for advanced semiconductor Films and OCD metrology equipment.
Software Engineer 3 KLA CorporationSoftware Engineer 3Hillsboro, OR$115,900–$197,000 / yearEnabling the movement towards advanced chip design, KLA's Global Products Group (GPG), which is responsible for creating all of KLA's metrology and inspection products, is looking for the best and the brightest research scientist, software engineers, application development engineers, and senior product technology process engineers. The ideal candidate thrives in complex system environments, demonstrates deep technical expertise in multithreaded/multiprocessing software, and brings a strong troubleshooting mindset to solve challenging, real-world problems in semiconductor equipment.
Product Systems Engineer nLIGHTProduct Systems EngineerCamas, WA$85,000–$95,000 / yearThe ideal candidate will be involved in all aspects of the product life cycle at nLIGHT including system architecture, performance metrics, costs, schedules, and troubleshooting to enable the realization of next generation directed energy laser products. Seek improvements in reliability based on failure analysis of external RMAs and internal NCMs by establishing root cause and recommending appropriate corrective and preventative action plans.
Product Systems Engineer nLIGHT IncProduct Systems EngineerCamas, WA$85,000–$95,000 / yearThe ideal candidate will be involved in all aspects of the product life cycle at nLIGHT including system architecture, performance metrics, costs, schedules, and troubleshooting to enable the realization of next generation directed energy laser products. Seek improvements in reliability based on failure analysis of external RMAs and internal NCMs by establishing root cause and recommending appropriate corrective and preventative action plans.
Principal AI Network HW Systems Engineer Microsoft CorpPrincipal AI Network HW Systems EngineerHillsboro, OR$142,800–$274,800 / yearThe Platform Systems Engineering (PSE) team is seeking a Principal AI Network Hardware Systems Engineer to lead the architecture, bring-up, validation, optimization, and deployment of networking infrastructure for Microsofts MAIA AI platform. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year.
Staff NPI Engineer (Laser, Photonics & Automation) Coherent CorpStaff NPI Engineer (Laser, Photonics & Automation)Wilsonville, ORNET-based test frameworks\n Other industrial automation environments\n \nEducation & Experience\n\n B.S. or M.S. in Optics, Physics, Electrical Engineering, Mechatronics, Software Engineering, or related discipline.\n 6+ years' experience in NPI, product, manufacturing, or test engineering within lasers, optics, photonics, or related high-tech industries.\n \u00b7Strong hands-on experience with optical alignment, opto-mechanical assembly, and laser/photonics test equipment.\n \nWe are seeking a highly technical and hands-on Staff NPI Engineer to lead the transition of new laser and photonic products from R&D to scalable, high-volume manufacturing and hand over to Production and Sustaining Engineering.\n \nPrimary Duties & Responsibilities\n \nNPI Project Execution\n\n Lead and support new product introductions from Design release through Pilot ramp.\n
Customer Support Engineer KLACustomer Support EngineerHillsboro, OregonOur comprehensive services include: proactive management of tools to identify and improve performance; expertise in optics, image processing and motion control with worldwide service engineers, 24/7 technical support teams and knowledge management systems; and an extensive parts network to ensure worldwide availability of parts. The KLA Services team headquartered in Milpitas, CA is our service organization that consists of Service Sales and Marketing, Spares Supply Chain management, Field Operations, Engineering, Product Training, and Technical Support.
NewTelecom Circuit Activation/Testing Engineer Adex CorporationTelecom Circuit Activation/Testing EngineerPortland, ORPossess a strong technical understanding of Gigabit Ethernet/Fast Ethernet, DS1/T1, DS3, VT1.5, VTV, STS1, STSV and OC3-OC192 circuit types as well as familiarity with existing processes and procedures associated in provisioning and acceptance testing of these circuit types . Responsible for executing services disconnects throughout the establish Network / CPE per customer and program request via establish program disconnect process.
Applications Engineer - APPS II / APPS III Aehr Test SystemsApplications Engineer - APPS II / APPS IIIBeaverton, ORActs as intermediary and field escalation focal point between customer and departments by providing technical support and documentation to field engineers and product support personnel who are diagnosing, troubleshooting, repairing and debugging equipment. Qualifications - Skills / Abilities / Experiences: Keen understanding of device test techniques and methodology, particularly design for test (DFT) and structural tests such as Scan/ATPG, JTAG, and memory BIST.
Sr. Supplier Quality Engineer SIG SAUER IncSr. Supplier Quality EngineerTualatin, ORSupplier Quality Engineer will collaborate with cross functional teams including Design Engineers, Manufacturing, internal Quality, Project Management, Production Planning, Incoming Inspection, Purchasing as well as outside manufacturing and OSP suppliers. Possess experience in evaluating and troubleshooting all steps from receiving inspection of raw material to final inspection of completed parts of the manufacturing processes at suppliers, and assist in implementing permanent corrective actions to the suppliers manufacturing process.
Telecommunications Engineer VailexaTelecommunications EngineerPortland, ORValid driver's license and ability to travel to regional client sites as needed PREFERRED QUALIFICATIONSLegacy Optical Transport Platform Experience (Strongly Preferred): Hands-on experience with legacy SONET optical transport platforms, including OC-level transport systems or equivalent. Phase 1 will focus on structured field and records assessments across regional facilities to validate legacy transport services, reconcile circuit records, identify gaps, and document findings for client review before downstream planning begins.
NewFab Metrology and Yield Engineer FormFactorFab Metrology and Yield EngineerBeaverton, OregonAutomated Optical Inspection (AOI), Cleanroom Operations, Cross-Functional Collaboration, Data Analytics, Design of Experiments (DOE), Environmental, Health, and Safety (EHS) Regulations, Equipment Qualification, Flying Probe, Optical Microscopy, Process Control, Statistical Analysis, Statistical Process Control (SPC), Structured Problem Solving, Surface Metrology, Technical Writing Documentation Education & Experience: The position partners closely with integration, yield and process engineering to ensure robust measurement capability, actionable defect and yield data, and disciplined problem-solving that drives yield improvement, excursion prevention, and production stability.
Photonics Manufacturing-Sustaining Engineer Coherent CorpPhotonics Manufacturing-Sustaining EngineerWilsonville, ORPrimary Skill Set and Responsibilities Demonstrated hands-on technical ability and manufacturing engineering support ownership for a high-tech photonic manufacturing line that includes process and fixture development for builds with exacting diode laser beam shaping and control for free space and fiber coupled output. The high-level goals for this position are direct engineering support of a manufacturing line to implement cost reduction and yield improvement measures whilst maintaining high quality levels and product output to meet demand in a Continual Improvement environment.
Staff NPI Engineer (Laser, Photonics & Automation) II-VI Optical Systems, Inc.Staff NPI Engineer (Laser, Photonics & Automation)Wilsonville, ORWe are seeking a highly technical and hands-on Staff NPI Engineer to lead the transition of new laser and photonic products from R&D to scalable, high-volume manufacturing and hand over to Production and Sustaining Engineering. Coherent's Laser Systems and Measurement division designs and manufactures precision solid-state lasers, laser diode systems, multi-laser light engines, and calibrated laser measurement systems.
Product Install Engineer - Swift-90% Travel KLA CorporationProduct Install Engineer - Swift-90% TravelHillsboro, OR$31.78–$54.04 / hourOur comprehensive services include: proactive management of tools to identify and improve performance; expertise in optics, image processing and motion control with worldwide service engineers, 24/7 technical support teams and knowledge management systems; and an extensive parts network to ensure worldwide availability of parts. The KLA Services team headquartered in Milpitas, CA is our service organization that consists of Service Sales and Marketing, Spares Supply Chain management, Field Operations, Engineering, Product Training, and Technical Support.
Customer Support Engineer KLA CorporationCustomer Support EngineerHillsboro, OR$25.15–$42.75 / hourOur comprehensive services include: proactive management of tools to identify and improve performance; expertise in optics, image processing and motion control with worldwide service engineers, 24/7 technical support teams and knowledge management systems; and an extensive parts network to ensure worldwide availability of parts. The KLA Services team headquartered in Milpitas, CA is our service organization that consists of Service Sales and Marketing, Spares Supply Chain management, Field Operations, Engineering, Product Training, and Technical Support.
Process Engineer 2 Lam Research CorpProcess Engineer 2Tualatin, ORKey Responsibilities include, but are not limited to: Provide high-quality, efficient application support and solution development across a range of metrology techniques, including AFM, nanoindentation, UV-Vis spectroscopy, optical coupling measurements, and other characterization methods as needed. Drive innovation by thinking beyond traditional approaches, leveraging internal and external expertise to identify, develop, and implement metrology solutions for emerging characterization challenges across a broad range of technologies and applications.
Process Engineer 4 Lam Research CorpProcess Engineer 4Tualatin, ORYour role involves developing new and advanced process formulations, defining equipment hardware to meet processing requirements, evaluating test data, and coordinating design requirements to ensure compatibility of processing methods. Our hybrid roles combine the benefits of on-site collaboration with colleagues and the flexibility to work remotely and fall into two categories On-site Flex and Virtual Flex.
Software Engineer 3 KLA CorpSoftware Engineer 3Hillsboro, OR$115,900–$197,000 / yearEnabling the movement towards advanced chip design, KLA''s Global Products Group (GPG), which is responsible for creating all of KLA's metrology and inspection products, is looking for the best and the brightest research scientist, software engineers, application development engineers, and senior product technology process engineers. The ideal candidate thrives in complex system environments, demonstrates deep technical expertise in multithreaded/multiprocessing software, and brings a strong troubleshooting mindset to solve challenging, real-world problems in semiconductor equipment.
Field Diagnostics Engineer ZEISSField Diagnostics EngineerHillsboro, OregonAs a Field Diagnostics Engineer, you will analyze complex machine data, implement and help to develop diagnostic solutions, and serve as the local expert for ZEISS lithography optics at customer sites, with a strong focus on the newest generation of our products. We have a diverse range of portfolios throughout the ZEISS family in segments like, Industrial Quality & Research, Medical Technology, Consumer Markets and Semiconductor Manufacturing Technology.
Applications Development Engineer KLA CorporationApplications Development EngineerHillsboro, OR$102,000–$173,400 / yearEnabling the movement towards advanced chip design, KLA's Global Products Group (GPG), which is responsible for creating all of KLA's metrology and inspection products, is looking for the best and the brightest research scientist, software engineers, application development engineers, and senior product technology process engineers. The FaST division is committed to support our customers to achieve performance entitlement of our solution and we effectively partner with our customers from their early research and development phase to the high volume in-line manufacturing implementation specific for their process needs.
Sr EO/IR Systems Engineer Teledyne Technologies IncSr EO/IR Systems EngineerWilsonville, ORThese markets include aerospace and defense, factory automation, air and water quality environmental monitoring, electronics design and development, oceanographic research, deepwater oil and gas exploration and production, medical imaging and pharmaceutical research. Our products include advanced surveillance sensors, unmanned air and ground vehicles, sensing devices used to detect chemicals, biological agents, radiation and explosives, and a host of other solutions that help warfighters, first responders, and search-and-rescue teams do their jobs better.
Sr Eo/Ir Systems Engineer Teledyne TechnologiesSr Eo/Ir Systems EngineerWilsonville, ORThese markets include aerospace and defense, factory automation, air and water quality environmental monitoring, electronics design and development, oceanographic research, deepwater oil and gas exploration and production, medical imaging and pharmaceutical research. Our products include advanced surveillance sensors, unmanned air and ground vehicles, sensing devices used to detect chemicals, biological agents, radiation and explosives, and a host of other solutions that help warfighters, first responders, and search-and-rescue teams do their jobs better.
Principal Systems Engineer Onto InnovationPrincipal Systems EngineerHillsboro, OROnto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: 3D metrology spanning the chip from nanometer-scale transistors to micron-level die-interconnects; macro defect inspection of wafers and packages; metal interconnect composition; factory analytics; and lithography for advanced semiconductor packaging. We are seeking a highly experienced Principal Systems Engineer to lead the architecture, integration, and validation of complex systems for advanced semiconductor Films and OCD metrology equipment.
Senior Silicon Test Engineer Microsoft CorpSenior Silicon Test EngineerHillsboro, OR$119,800–$234,700 / yearTo achieve this goal, the Silicon Manufacturing and Packaging Engineering team is instrumental in defining and delivering operational measures of success for hardware manufacturing, improving the planning process, quality, delivery, scale and sustainability related to Microsoft cloud hardware. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $160,200 - $261,000 per year.
Mechanical Design Engineer Teledyne Technologies IncMechanical Design EngineerWilsonville, OROur products include advanced surveillance sensors, unmanned air and ground vehicles, sensing devices used to detect chemicals, biological agents, radiation and explosives, and a host of other solutions that help warfighters, first responders, and search-and-rescue teams do their jobs better. These markets include aerospace and defense, factory automation, air and water quality environmental monitoring, electronics design and development, oceanographic research, deepwater oil and gas exploration and production, medical imaging and pharmaceutical research.
Quality & Reliability Test Engineer Teledyne Technologies IncQuality & Reliability Test EngineerWilsonville, OROur products include advanced surveillance sensors, unmanned air and ground vehicles, sensing devices used to detect chemicals, biological agents, radiation and explosives, and a host of other solutions that help warfighters, first responders, and search-and-rescue teams do their jobs better. These markets include aerospace and defense, factory automation, air and water quality environmental monitoring, electronics design and development, oceanographic research, deepwater oil and gas exploration and production, medical imaging and pharmaceutical research.
Firmware/Software Engineer Coherent CorpFirmware/Software EngineerWilsonville, ORWe are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program.
Automation Engineer Coherent CorpAutomation EngineerWilsonville, ORWe are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Participate in the design of complex assembly stations that combine precise, repeatable component placement, active alignment, and metrology of laser beams.
Sr. Mechanical Engineer Teledyne Technologies IncSr. Mechanical EngineerWilsonville, OROur products include advanced surveillance sensors, unmanned air and ground vehicles, sensing devices used to detect chemicals, biological agents, radiation and explosives, and a host of other solutions that help warfighters, first responders, and search-and-rescue teams do their jobs better. These markets include aerospace and defense, factory automation, air and water quality environmental monitoring, electronics design and development, oceanographic research, deepwater oil and gas exploration and production, medical imaging and pharmaceutical research.
Metrology Engineer Karman Holdings IncMetrology EngineerWilsonville, ORTo conform to U.S. Government export regulations, certain positions may require applicants to be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.
R&D Engineer III Semiconductor Services Business USR&D Engineer IIIHillsboro, ORPart timeWork Experience: This position generally requires 4 to 8 years of directly related engineering experience in a development engineering role or a combination of directly related process engineering and development activities. Uses knowledge in engineering, chemistry, and physics to develop new products, coatings, cleaning methodologies, and services for both internal and external customers.