Design Engineer Continental ResourcesDesign EngineerExeter, NHFull timeWork will be performed using oscilloscopes, voltage meters, electronic loads, bench top power supplies, varies, test fixtures, environmental ovens and other electronic associated equipment. •Testing product models whether actual or prototype (bead board) to environmental conditions in order to establish operational stability, reliability and conformity to design.
Senior Staff Software Engineer, Autonomous Pilot Integration Shield AISenior Staff Software Engineer, Autonomous Pilot IntegrationBoston, MAHardware/Software Debugging — Diagnose and resolve integration issues across complex autonomy stacks, payload computers, and embedded systems in lab and field environments — including memory, CPU, and timing profiling under operationally-representative loads. In this role, youll write new autonomy code — such as mission behaviors, platform-specific control, multi-agent coordination, contingencies, and executive autonomy — and own it end-to-end from software-in-the-loop, to hardware-in-the-loop, to vehicle-in-the-loop, to live test exercise.
Software Engineer II, Autonomy Behaviors Shield AISoftware Engineer II, Autonomy BehaviorsBoston, MAThe team is responsible for developing autonomous behaviors within Shield AI’s industry-leading mission autonomy software stack and deploying them across a breadth of platforms, including the Anduril Fury, Northrup Grumman Talon, Shield AI V-Bat, and other first and third-party autonomous vehicles. The Autonomy Capabilities team at Shield AI has assembled a diverse team of experts in software, robotics, control systems, optimization, and data analysis to create software solutions that greatly evolve the capabilities of our customers.
Staff Software Engineer, Autonomy Behaviors Shield AIStaff Software Engineer, Autonomy BehaviorsBoston, MAUtilize your software and systems expertise to architect behaviors as scalable software subsystems, that may interact directly or indirectly with a breadth of system components (e.g., sensor processing, state estimation, peer-to-peer communications, contingency management, actuation, and payload interfacing). The team is responsible for developing autonomous behaviors within Shield AI’s industry-leading mission autonomy software stack and deploying them across a breadth of platforms, including the Anduril Fury, Northrup Grumman Talon, Shield AI V-Bat, and other first- and third-party autonomous vehicles.
Senior Lead AI Software Engineer KlaviyoSenior Lead AI Software EngineerBoston, MA$216,000–$324,000 / yearAs a Senior Lead Software Engineer on Amplify, you will: Independently own and drive high-impact objectives that span multiple Amplify teams and align with company priorities, defining the technical roadmap that ensures our internal applications, APIs, data and event pipelines, and AI-powered workflows can scale with Klaviyo and continue delivering measurable business outcomes. Independently lead the end-to-end lifecycle of large, multi-team initiatives with clear technical direction, architectural leadership, and active workstream curation, from discovery and design through implementation, rollout, and long-term ownership of complex programs that span internal customers across the company.
Senior AI Automation Engineer - SDLC & GenAI Platforms AmeripriseSenior AI Automation Engineer - SDLC & GenAI PlatformsBoston, MAThis role is responsible for defining, building, and scaling AI-driven automation across the software delivery lifecycle—leveraging Anthropic Cloud Code–based capabilities, agentic workflows, and enterprise-grade GenAI platforms. The ideal candidate brings hands-on experience operationalizing LLMs at scale, deep understanding of modern SDLC practices, and a strong bias toward automation, governance, and measurable business outcomes.
Sr. 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 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.
Senior 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.
Senior 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.
Product Engineer II – Utility Solutions EsriProduct Engineer II – Utility SolutionsBoston, MARemote$79,664–$133,120 / yearAs the Product Engineer II – Utilities, you will collaborate with customers, industry teams, and other product development team members to design, develop, and support the right geospatial solutions for electric, gas, water, sewer, stormwater and telecommunications agencies. Design and author test cases for functionality, performance, scalability, and durability; execute both manual and automated tests, analyze test results, and report results.
Senior Software Engineer - Growth KlaviyoSenior Software Engineer - GrowthBoston, MA$148,000–$222,000 / yearYou will define the architectural approach and technical strategy for your area of responsibility, anticipating scalability and reliability needs, including leveraging AI agents in our work and delivery, ensuring the solution is robust, scalable, and adheres to best practices for security, performance, and maintainability. 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.
Senior 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.
Senior 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.
Senior Full Stack AI Engineer AmeripriseSenior Full Stack AI EngineerBoston, MAThe engineer will work closely with Portfolio Managers, Research Analysts, and Quant teams to translate high-value investment use cases into production-grade agentic solutions deployed on AgentCore. Ameriprise is seeking a Senior AI Automation Engineer to mature and expand our enterprise AI Platform – AgentCore by designing, building, and scaling new AI-driven capabilities that directly support Portfolio Management and Research workflows.
NewSenior Full Stack Engineer (TypeScript, Node.js) EPAM SystemsSenior Full Stack Engineer (TypeScript, Node.js)Boston, MAContribute to the development of AI-powered user experiences, such as: evolving native web experiences toward an “AI-native” platform, developing an AI Center (subject to business direction), building AI-driven dashboards (e.g., Digital Advisor for Client Assist use cases). In this role, you will help shape the future of digital experiences by advancing a fully AI-native architecture, including intelligent agents, dynamic user interfaces, and scalable infrastructure.
NewSenior Full Stack Engineer (React Native, TypeScript, Node.js) EPAM SystemsSenior Full Stack Engineer (React Native, TypeScript, Node.js)Boston, MAIn this role, you will be responsible for designing and developing next-generation digital experiences for mobile devices, working end-to-end across backend-for-frontends (BFFs) and React Native applications. We are seeking a highly skilled Senior Full Stack Engineer with deep expertise in React Native, TypeScript, and Node.js, and hands-on experience building AI-driven, agentic systems.
NewSenior PBAC Engineer EPAM SystemsSenior PBAC EngineerBoston, MAGeneral knowledge of Active Directory (AD) or other LDAP Directory Services, Intrusion Detection, Security Policies / GPOs, Operating System (OS) hardening, Single Sign-on (SSO), Federation (SAML and/or OIDC), Multi-Factor Authentication (MFA), Certificates/Public Key Infrastructure (PKI), Identity Management concepts, Cloud Technology and device authentication a plus. In this role, the Senior IAM Engineer will focus on pBAC / PBAC (Policy-Based Access Control) capabilities, including centralized policy decisioning, distributed policy enforcement integration, attribute/context aggregation, and auditability to meet security and compliance expectations.
AI Engineer SamsaraAI EngineerBoston, MAYou will collaborate with architects, engineers, and cross-functional stakeholders across Samsara to brainstorm, design, rapidly prototype, and productionalize AI-driven features and capabilities that integrate deeply into real business workflows. Samsara (NYSE: IOT) is the pioneer of the Connected Operations™ Cloud, which is a platform that enables organizations that depend on physical operations to harness Internet of Things (IoT) data to develop actionable insights and improve their operations.
Software Engineer II - Inline Mailflow AbnormalSoftware Engineer II - Inline MailflowBoston, MADesign and implement core components of the SMTP relay harness, including Mail Transfer Agent (MTA) infrastructure, scalability, IP management, encryption, and DMARC support, working from conception through production operation. • Contribute to technical design discussions on how the relay integrates with existing inline products (outbound DLP, behavioral outbound, misdirected email), helping define the architecture of the broader Mail Flow platform.
Software Engineer (C# .NET Framework/SQL Server) SarnovaSoftware Engineer (C# .NET Framework/SQL Server)Boston, MAThe position is well suited for an engineer who enjoys working with complex systems, troubleshooting production issues, and contributing to the continued evolution and sustainability of the platform. This role focuses on supporting, enhancing, and progressively modernizing enterprise and legacy applications using C#, NET Framework, and SQL Server.
Principal Software Engineer, Enterprise Scalability KlaviyoPrincipal Software Engineer, Enterprise ScalabilityBoston, MA$244,000–$366,000 / yearAI‑assisted scale engineering: AI‑driven anomaly detection reduces alert noise while improving signal; generative load testing and copilot runbooks are used in release/readiness checks for the top critical services; time‑to‑isolate regressions drops 20–30%. 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.
Senior 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.
Principal Engineer, Core Infrastructure KlaviyoPrincipal Engineer, Core InfrastructureBoston, MA$244,000–$366,000 / 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. AI‑enabled platform: Approved AI tooling is integrated into IDE/CI/CD with repo policies and auditability; ≥70% MAU among eligible engineers; MTTR down 20–30% via AI‑assisted triage; flaky‑test rate decreases through targeted, AI‑suggested fixes.
Senior 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.
Senior Software Engineer II - AI Tooling and Interfaces DoubleVerifySenior Software Engineer II - AI Tooling and InterfacesBoston, MA$107,000–$193,000 / yearSoftware Engineer II in AI Tooling and Interfaces, youll design and build systems purpose-built for AI agents, automations, and decisioning engines that drive real outcomes for our clients and internal teams. If you enjoy turning high-volume data into clean, powerful systems—and you want your work to drive real business outcomes rather than just dashboards—this role puts you right at the center of the action.
Senior Software Engineer II DoubleVerifySenior Software Engineer IIBoston, MA$107,000–$193,000 / yearRockerbox empowers marketing executives to confidently make data-driven decisions, helping brands such as Tula, Figs, and Burton with the strategic decision-making that drives growth. You’ll partner closely with product managers to define requirements, design intuitive data endpoints, and deliver seamless integrations between backend services and user interfaces.
Senior Full Stack Engineer - Customer Agent KlaviyoSenior Full Stack 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. As a Senior Engineer, you’ll tackle complex challenges, develop multiple solutions, and evaluate business and technical trade-offs to determine the best path forward.
Senior Data Engineer MozillaSenior Data EngineerBoston, MABe a guardian of data quality: You’ll ensure our datasets stay accurate and performant by using our observability tools to monitor quality and joining a weekly triage rotation to resolve data issues as they arise. Recent platform improvements the team has driven include launching a data catalog, introducing data observability, and implementing a medallion architecture to ensure our data is reliable, accurate, and accessible.
Staff 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.
Senior 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.
Principal Mechanical Design Engineer RTXPrincipal Mechanical Design EngineerMarlborough, MassachusettsActive and existing security clearance required after day 1 At RTX, the world’s largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. Work with minimal direction or supervision, while exercising considerable latitude in determining the technical objectives of the assignment while meeting cost, schedule, quality, and performance requirements for the finished product.
NewPrincipal Mechanical Design Engineer The Charles Stark Draper LaboratoryPrincipal Mechanical Design EngineerCambridge, MassachusettsDraper supports many programs to improve work-life balance including workplace flexibility, employee clubs ranging from photography to yoga, health and finance workshops, off site social events and discounts to local museums and cultural activities. The mechanical design team is responsible for the full cycle of mechanical design from concept exploration of multiple potential solutions through trade study analysis, down-selection, prototyping and testing, and finally delivery.
Principal Mechanical Design Engineer RTX CorpPrincipal Mechanical Design EngineerTewksbury, MAWork with minimal direction or supervision, while exercising considerable latitude in determining the technical objectives of the assignment while meeting cost, schedule, quality, and performance requirements for the finished product. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or An Advanced Degree in a related field and minimum 5 years experience.
Assistant Vice President, Mechanical Design Engineer WSP Global IncAssistant Vice President, Mechanical Design EngineerBoston, MA$138,100–$205,000 / yearWork with cross‑functional teams of engineers to execute HVAC project design work on mid‑level and/or multiple concurrent projects, including, tracking hours, task completion, system calculations, compliance documentation, and technical analysis. This role will actively participate in the full project cycle with a focus on complex sector work such as healthcare HVAC systems, pharmaceutical clean rooms, life sciences facilities, laboratories, industrial ventilation, and mixed-use commercial facilities from the design phase through final construction close‑out.
2026 ADGE Mechanical Design Engineer II (On-Site) RTX Corp2026 ADGE Mechanical Design Engineer II (On-Site)Tewksbury, MAKnowledge of electronic assembly integration, shelters, racks, power distribution units, military/commercial specifications, GD&T (ASME Y14.5), ECAD processes, interconnects/cables/harnesses, and material selection/finishes. The ideal candidate will bring a blend of technical expertise, mechanical hardware design experience, system integration skills, and a strong background in program execution and production support.
Senior Mechanical Design Engineer RTXSenior Mechanical Design EngineerMarlborough, MassachusettsTeaming/Communication: Collaborate with cross-functional teams including other engineering disciplines, operations, supply chain, quality, and external suppliers to resolve technical challenges and develop effective design solutions. Lead small teams utilizing strong mechanical hardware design experience and knowledge in a fast-paced collaborative environment with ruggedized structures, interconnects, cooling, electronics packaging, tooling and/or array integration.
Sr. Mechanical Design Engineer Myomo IncSr. Mechanical Design EngineerBurlington, MA$130,000–$140,000 / yearBased on patented technology developed at MIT, Harvard Medical School and by the Company, Myomo develops and markets the MyoPro product line of lightweight, non-invasive, powered arm braces (orthoses) to restore function in paralyzed or weakened arms and hands of individuals that have suffered a stroke, spinal cord, or nerve injury. It is the only device that, sensing a patientâs own neurological signals through non-invasive wearable sensors, can restore the ability to use their arms and hands so that they can live independently, increase their quality of life, reduce cost of care, and return to work.Â
Senior Mechanical Design Engineer RTX CorpSenior Mechanical Design EngineerMATeaming/Communication: Collaborate with cross-functional teams including other engineering disciplines, operations, supply chain, quality, and external suppliers to resolve technical challenges and develop effective design solutions. Lead small teams utilizing strong mechanical hardware design experience and knowledge in a fast-paced collaborative environment with ruggedized structures, interconnects, cooling, electronics packaging, tooling and/or array integration.
Sr. Mechanical Design Engineer Flex LtdSr. Mechanical Design EngineerLittleton, MA$126,500–$173,900 / yearThis role is responsible not just for creating models, but for expertly detailing SolidWorks designs into clear, complete, and executable documentation that enables low‑cost, high‑quality, repeatable manufacturing. Build and maintain complete documentation packages, including SolidWorks models, drawings, specifications, and structured BOMs, with accountability for accuracy and completeness.
Senior Mechanical Design Engineer RISE RoboticsSenior Mechanical Design EngineerSomerville, MA$150,000–$175,000Founded in 2011 by graduates of MIT and RISD (Rhode Island School of Design), and backed by Engine Ventures, Techstars, Fortistar and Gates Corporation, RISE Robotics is leading the way to Zero Emission heavy machinery by providing the world’s most efficient and productive alternative to hydraulics. Proven technical aptitude and experience with electro-mechanical design and related manufacturing processes that might include: complex mechanical assemblies; rotating machinery; tolerance studies; design for assembly / manufacturing; EE and ME component and material selection; FMEA; design for life.
Principal Mechanical Design Engineer RISE RoboticsPrincipal Mechanical Design EngineerSomerville, MA$175,000–$200,000Founded in 2011 by graduates of MIT and RISD (Rhode Island School of Design), and backed by Engine Ventures, Techstars, Fortistar and Gates Corporation, RISE Robotics is leading the way to Zero Emission heavy machinery by providing the world’s most efficient and productive alternative to hydraulics. Proven technical aptitude and experience with electro-mechanical design and related manufacturing processes that might include: complex mechanical assemblies; rotating machinery; tolerance studies; design for assembly / manufacturing; EE and ME component and material selection; FMEA; design for life.
Mechanical Design Engineer Entwistle CoMechanical Design EngineerMA$80,000–$100,000 / yearIn this role, you'll help deliver mission-critical components that support U.S. and allied defense, with your skills, creativity, and impact directly contributing to national and global security. Collaborate with project management and cross-functional teams to troubleshoot designs, resolve issues, and drive continuous improvements.
Mechanical Design Engineer NanobiosymMechanical Design EngineerCambridge, MAFull timeNanobiosym Diagnostics, Nanobiosym 's commercial engine, focuses on the commercialization of its disruptive diagnostic technology platform, which will empower people worldwide with rapid, accurate, and portable diagnostic information about their own health. In addition to technical skills, successful candidates possess strong organizational, communication and team skills, and thrive in a fast-paced start-up environment.
Design Engineer II SigSauerDesign Engineer IIExeter, NHPart timePosition Summary: The Design Engineer II is responsible for developing moderately complex sub-system designs for new products as well as design improvements for legacy products. A basic understanding of manufacturing methods including machining, metal injection molding, plastic injection molding, stamping/fine blanking, extrusion, forging, and casting is required, as is knowledge in material selection, heat treatment, and coatings.
Sr. Design Engineer SigSauerSr. Design EngineerExeter, NHPart timeToday, 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. Able to generate clear, fully dimensioned, ASME Y14.5 compliant drawings of complex parts using logical datum structures and functional dimensioning schemes.
Mechanical Design Engineer Pendar TechnologiesMechanical Design EngineerCambridge, MA$90,000–$110,000 / yearIn six months, you will have… Sourced parts, assembled, and tested the next set of prototypes, successfully handing them off to our internal teams for R&D and algorithms development. Have 2–5 years of mechanical engineering experience, with familiarity across the full product development cycle from prototypes through DFM to production handoff.
Design Engineer (HVAC - Mass) Aha EngineersDesign Engineer (HVAC - Mass)Boston, MA$80,000–$120,000 / yearAs a multi-discipline building system consulting firm, our offerings include best-in-class HVAC, Plumbing, Electrical and Fire Protection (MEP/FP) and Technology Design; Energy & Sustainability Consulting; Commissioning, BIM/VDC and Advisory Services; Arc Flash and Coordination Studies; and Computational Fluid Dynamics Modeling. AHA’s Team of dedicated professionals in our Burlington and Boston, MA; Atlanta (Alpharetta), GA; Philadelphia, PA; and Ashburn, VA offices expertly advise, evaluate, model, design and commission high-performance building systems delivering trusted performance to our clients under the most challenging budget and schedule constraints.
Electro Mechanical Design Engineers - ATE- Creo - Creo Schematic Associates SystemsElectro Mechanical Design Engineers - ATE- Creo - Creo SchematicTewksbury, MassachusettsMinimum of five (5) years of technical / engineering experience in mechanical design and/or production support Minimum of three (3) years experience with CAD solid modeling tools and analysis tools with an emphasis on ProE / CREO Parametric . Research, plan, design and develop mechanical test systems in areas including, but not limited to, vibration, thermal, hydraulic, radio frequency, and electro-optical for production testing environments.
Design Engineer II SIG SAUER IncDesign Engineer IINHPosition Summary: The Design Engineer II is responsible for developing moderately complex sub-system designs for new products as well as design improvements for legacy products. A basic understanding of manufacturing methods including machining, metal injection molding, plastic injection molding, stamping/fine blanking, extrusion, forging, and casting is required, as is knowledge in material selection, heat treatment, and coatings.