JobotNewPhysical Security Programmer JobotPhysical Security ProgrammerHouston, TX$30–$40 / hourInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Seeking a Physical Security Programmer responsible for configuring and commissioning electronic security systems, including access control, video management, intercoms, intrusion detection, and related integrations.
JobotNewWorkday Configuration Analyst JobotWorkday Configuration AnalystHouston, TX$90,000–$105,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. You'll play a key role in supporting and optimizing the organization's Workday environment, with a strong emphasis on configuration, business process enhancements, Learning module administration, and end-user support.
JobotNewSr. Nutanix Infrastructure Engineer JobotSr. Nutanix Infrastructure EngineerHouston, TX$130,000–$145,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Preferred Technical Background: Hybrid Cloud | Nutanix | VMware | Virtualization | Datacenter Infrastructure | Azure | GCP | Hyperconverged Infrastructure | Cisco UCS | Enterprise Storage | Infrastructure Automation | Disaster Recovery | Infrastructure Modernization.
JobotNewEmbedded Firmware Engineer - RTOS, Bare-metal JobotEmbedded Firmware Engineer - RTOS, Bare-metalHouston, TX$125,000–$135,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We are currently seeking a highly skilled Embedded Engineer to design, develop, and support embedded systems that power our industrial products from initial concept through full production.
JobotNewSystems Enablement Manager JobotSystems Enablement ManagerHouston, TX$100,000–$150,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. 3. Develop and execute a comprehensive change management strategy to ensure successful adoption of new systems by end users.
JobotNewBAS Programmer JobotBAS ProgrammerHouston, TX$90,000–$120,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. You’ll collaborate closely with mechanical contractors, engineers, technicians, and end users to ensure each system operates exactly as designed and delivers long-term value to the customer.
JobotNewDevOps Solutions Architect – (Managed Services) JobotDevOps Solutions Architect – (Managed Services)Houston, TX$170,000–$205,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Our teams partner with top cloud and data platforms including Snowflake, AWS, Azure, Databricks, dbt, Kafka, Fivetran, and more to deliver scalable enterprise solutions for some of the world’s largest organizations.
JobotNewPurchasing Agent-IT Contract specialist JobotPurchasing Agent-IT Contract specialistHouston, TX$95,000–$115,000 / yearResolve a variety of purchasing issues/problems for both internal and external customers (i.e., unblock invoices to secure payment for vendors, provide expediting services as necessary, disputes for "out of scope" changes, contractual performance issues, etc.). Review Customers' IT requisitions and process Purchase Orders in SAP to procure software, hardware, cloud services, and IT professional services at the most favorable price consistent with requirements for quantity, quality, safety, and delivery to support the assigned Business Unit(s).
JobotNewSr. Manager of Network Engineering & Connectivity JobotSr. Manager of Network Engineering & ConnectivitySugar Land, TX$170,000–$195,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. You will oversee network engineering, operations, vendor strategy, and long-term roadmap development—while leading and developing a high-performing team.
JobotNewSenior Python Developer JobotSenior Python DeveloperHouston, TXRemote$150,000–$200,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We are a growing company in the reinsurance industry that is on the lookout for a Senior Software Engineer / Senior Full Stack Engineer with strong Python skills and a reinsurance or financial services background!
JobotNewWebsite Performance Manager JobotWebsite Performance ManagerHouston, TX$80,000–$90,000 / yearWe are a fast-growing, multi-location services platform experiencing significant expansion across multiple markets and brands throughout the U.S. With a strong focus on customer acquisition, regional growth strategy, brand performance, and operational excellence, the organization is continuing to invest heavily in marketing innovation, data-driven decision making, and scalable growth initiatives. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.
JobotNewSenior Frontend Engineer JobotSenior Frontend EngineerHouston, TX$150,000–$200,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. The successful candidate will be responsible for developing and refining our front-end web and mobile applications, ensuring a seamless and visually appealing user experience across multiple platforms.
JobotNewProject Manager (Data Center Construction) JobotProject Manager (Data Center Construction)Houston, TX$140,000–$200,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.
Mitchell MartinSolutions Architect Mitchell MartinSolutions ArchitectHouston, TX$60–$75 / hourBy applying for this job, you agree to receive AI-generated calls, text messages, and/or emails from Mitchell Martin Inc and its affiliates and contracted partners at various frequency through traditional and automated methods. Networking Technologies | Cloud Networking | Network Automation | Identity and Authentication | Service Solution Documentation | Infrastructure Integration.
Mitchell MartinNewUSA_Developer Mitchell MartinUSA_DeveloperHouston, TX$34.68–$51 / hourExpertise in developing complex dashboards and reports. Act as a subject matter expert on design development principles.
Mitchell MartinNewDeveloper Mitchell MartinDeveloperHouston, TX$36.99–$54.40 / hourDesign and develop robotic systems tailored for drilling and pipe-handling applications. Design, develop, and deploy robotic control systems for drilling operations.
Powell IndustriesNewSenior Electrical Power Applications Engineer Powell IndustriesSenior Electrical Power Applications EngineerHouston, TXPrioritizes and plans work activities; uses time efficiently; plans for additional resources; sets goals and objectives; develops realistic action plans in order to meet deadlines. As a manufacturer, we recruit and hire experienced and knowledgeable applicants to ensure our product is engineered, fabricated, and assembled to customer specifications!
Powell IndustriesNewSenior Applications Engineer-Automation Estimating Powell IndustriesSenior Applications Engineer-Automation EstimatingHouston, TXDrive the growth of automation by helping to build and maintain long lasting relationships, inspire trust, enhancing client experience, and being a thorough leader with innovative automation solutions to meet customer needs. Responsible for the technical review and understanding of the customers’ requirements in their requests for proposals including system designs, single line drawings, site layouts, containerization, performance guarantees, availability guarantees, etc.
PlanIT GroupNewCompensation and HRIS Analyst PlanIT GroupCompensation and HRIS AnalystHouston, TXStrong analytical, prioritizing, interpersonal, problem-solving, presentation, budgeting, project management (from conception to completion), and planning skills. Applies knowledge of HR information systems and data to extract and analyze current and historical data to support strategic workforce planning.
Pinnacle Technical ResourcesUI/UX Developer - Advanced Pinnacle Technical ResourcesUI/UX Developer - AdvancedHouston, Texas$60–$75 / hourContractorJob Description:Expert in UI/UX and design technique as well as experience working across large environments with multiple operating systems/infrastructure for large-scale programs (e.g., Expert Engineers) starting to be firm-wide resources working on projects across client. The specific compensation for this position will be determined by a number of factors, including the scope, complexity and location of the role as well as the cost of labor in the market; the skills, education, training, credentials and experience of the candidate; and other conditions of employment.
Pinnacle Technical ResourcesNew.NET Developer III Pinnacle Technical Resources.NET Developer IIIHouston, Texas$45–$48 / hourContractorThe specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. Successfully placed or hired candidates would only be asked for banking details after accepting an offer from us during our official onboarding processes as part of payroll setup.
Pinnacle Technical ResourcesSoftware Engineer-Other - Advanced Pinnacle Technical ResourcesSoftware Engineer-Other - AdvancedHouston,, Texas$50–$55 / hourContractorThe specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. Successfully placed or hired candidates would only be asked for banking details after accepting an offer from us during our official onboarding processes as part of payroll setup.
First Horizon BankNewIT DEVELOPER SR First Horizon BankIT DEVELOPER SRHouston, TXHeadquartered in Memphis, TN, the banking subsidiary First Horizon Bank operates in 12 states across the southern U.S. The Company and its subsidiaries offer commercial, private banking, consumer, small business, wealth and trust management, retail brokerage, capital markets, fixed income, and mortgage banking services. First Horizon Corporation is a leading regional financial services company, dedicated to helping our clients, communities and associates unlock their full potential with capital and counsel.
Fusion Medical StaffingNewTravel CVOR RN Fusion Medical StaffingTravel CVOR RNWebster, TX$2,108–$2,243They collaborate closely with the entire surgical team to ensure the optimization of patient outcomes by confirming all necessary surgical supplies and equipment are sterile and functional, assisting with safe patient positioning and draping, and coordinating immediate post-surgical continued patient care. The CVOR registered nurse is responsible for providing direct and indirect nursing care to assigned patients, as well as assisting in monitoring and supporting the patient throughout the surgical procedure.
AxelonNew(IT PSP) IT Product Specialist II Axelon(IT PSP) IT Product Specialist IIHouston, CARemote$75–$95 / hourServe as the authoritative lead for telecom/IP network planning, design integrity, and OSS data governance within the Telecom Network Portal (TNP). Ensure that all network elements—connections, circuits, devices, and locations—are reliably modeled and aligned across integrated systems.
SamsaraNewStaff Machine Learning Engineer SamsaraStaff Machine Learning EngineerHouston, TXRemoteYou 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.
SamsaraNewManager, Software Engineering - Mobile Platform SamsaraManager, Software Engineering - Mobile PlatformHouston, TXRemoteThis leader will balance long-term architectural rigor with near-term product delivery, ensuring Samsara’s mobile apps are scalable & performant while providing intuitive & delightful experiences for customers operating in the physical world. Working at Samsara means you’ll help define the future of physical operations and be on a team that’s shaping an exciting array of product solutions, including Video-Based Safety, Vehicle Telematics, Apps and Driver Workflows, and Equipment Monitoring.
SamsaraNewLead Full Stack Developer, Business Applications SamsaraLead Full Stack Developer, Business ApplicationsHouston, TXWorking at Samsara means you’ll help define the future of physical operations and be on a team that’s shaping an exciting array of product solutions, including Video-Based Safety, Vehicle Telematics, Apps and Driver Workflows, and Equipment Monitoring. • Bachelors in Computer Science, Engineering or related field with 8+ years of software development experience or Masters in Computer Science, Engineering or related field with 6+ years of software development experience with a focus on cloud technologies.
Teoresi GroupNewSystem Integration Engineer - Remote Teoresi GroupSystem Integration Engineer - RemoteHouston, TXRemoteAt 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.
SamsaraNewSenior Software Engineer, Growth SamsaraSenior Software Engineer, GrowthHouston, TXDevelop AI-powered products and agents that drive revenue pipeline and improve GTM operational efficiency - whether thats enhancing lead scoring models, automating content generation and multi-step GTM workflows, enriching data, or building smarter seller-facing tools. • You want to impact the industries that run our world: Your efforts will result in real-world impact—helping to keep the lights on, get food into grocery stores, reduce emissions, and most importantly, ensure workers return home safely.
SamsaraNewSenior Software Engineer - Route Execution SamsaraSenior Software Engineer - Route ExecutionHouston, TXRemoteYou 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.
Komodo HealthNewSr. Director, Infrastructure, SRE, & Security Komodo HealthSr. Director, Infrastructure, SRE, & SecurityHouston, TX$245,000–$305,000 / yearAcross the healthcare ecosystem, we’re helping our clients unlock critical insights to track detailed patient behaviors and treatment patterns, identify gaps in care, address unmet patient needs, and reduce the global burden of disease. We carefully consider multiple business-related factors when determining compensation, including job-related skills, work experience, geographic work location, relevant training and certifications, business needs and market demands.
LokaNewBusiness Development Lead – AWS Expertise - Remote LokaBusiness Development Lead – AWS Expertise - RemoteHouston, TXRemoteAs a BDL, you’ll play a pivotal role in generating and nurturing leads, strengthening relationships with Loka and AWS sales teams, and helping architect a scalable BD process. Now, we’re looking for a Business Development Lead who can work with our CMO and sales team to help us unlock new opportunities through AWS-funded campaigns and strategic outreach.
YugabyteNewPlatform Software Engineer (Control Plane) - Remote YugabytePlatform Software Engineer (Control Plane) - RemoteHouston, TXRemoteTogether, our hard-working team of experts and our industry-leading technology are uniquely positioned to meet the demands of modern workloads: geo-distributed, ultra-resilient, and built to scale without limits. The team works on cutting-edge technologies in cloud computing, container orchestration, and distributed systems that make database management more accessible and efficient while ensuring scalability, security, and reliability.
Komodo HealthNewStaff Data Engineer Komodo HealthStaff Data EngineerHouston, TX$208,000–$282,000 / yearAs a Staff-level IC, you will set technical direction across data modeling, productization, analytics enablement, and scalable delivery patterns, partnering with Product, Data Science, and consuming application teams to make Healthcare Map data usable at enterprise scale. Scalable Data Systems: Design and implement high-performance data processing and serving patterns across large-scale healthcare datasets, using the right tools for the problem across SQL, Python, Spark, Rust, C++, and emerging AI-enabled engineering workflows.
CircleNewDirector, IT - Remote CircleDirector, IT - RemoteHouston, TXRemote$200,000–$257,500 / yearCircle’s platform includes the world’s largest regulated stablecoin network anchored by USDC, Circle Payments Network for global money movement, and Arc, an enterprise-grade blockchain designed to become the Economic OS for the internet. As a Director of IT reporting directly to the CIO, you will serve as a strategic individual contributor responsible for driving alignment between the IT function and key partners across Security, Talent, and other cross-functional teams.
Aerodyne IndustriesNewADV000COL EA Technical Integration Engineer (J) Aerodyne IndustriesADV000COL EA Technical Integration Engineer (J)Houston, TXPerform technical review of simple and complex spaceflight payload systems, Government Furnished Equipment, or ISS systems with respect to transport, interface and operational parameters and requirements as well as assure that sound engineering practices have been employed. We have an exciting opportunity for an EA Technical Integration Engineer to support multiple human spaceflight programs, including the International Space Station (ISS), Orion, Gateway, and Commercial Crew to join the team with JETS.
Versa NetworksNewSoftware Engineer - RBI - Remote Versa NetworksSoftware Engineer - RBI - RemoteHouston, TXRemote$160,000–$260,000 / yearAs a leader in Secure SD-WAN, SSE (Secure Service Edge), SASE (Secure Access Service Edge) and Next-generation Managed Services, we are empowering organizations across the globe to transform their IT infrastructure for the modern cloud era. A candidate’s specific pay within this range will depend on a variety of factors, including job-related skills, training, location, experience, relevant education, certifications, and other business and organizational needs.
Versa NetworksNewCloud Services Engineer - Remote Versa NetworksCloud Services Engineer - RemoteHouston, TXRemote$110,000–$150,000 / yearAs a leader in Secure SD-WAN, SSE (Secure Service Edge), SASE (Secure Access Service Edge) and Next-generation Managed Services, we are empowering organizations across the globe to transform their IT infrastructure for the modern cloud era. A candidate’s specific pay within this range will depend on a variety of factors, including job-related skills, training, location, experience, relevant education, certifications, and other business and organizational needs.
Versa NetworksNewData Engineer - Remote Versa NetworksData Engineer - RemoteHouston, TXRemote$150,000–$220,000 / yearAs a leader in Secure SD-WAN, SSE (Secure Service Edge), SASE (Secure Access Service Edge) and Next-generation Managed Services, we are empowering organizations across the globe to transform their IT infrastructure for the modern cloud era. Pipeline Development & Deployment:Architect, develop, and deploy batch and streaming pipelines using Airflow and containerized workflows for cyber-security use-cases.
Censeo Consulting GroupFederal SAP Concur Implementation Project Manager - Remote Censeo Consulting GroupFederal SAP Concur Implementation Project Manager - RemoteHouston, TXRemote$90,000–$140,000 / yearDefines agency’s change management and transition communication requirements and performance metrics with a focus on mitigating adoption risks and satisfying customer information needs Identify agency stakeholder groups, assess stakeholder information needs, and prepare communication planning materials outlining key messages, methods, and timing by stakeholder group. Censeo is seeking a consultant to serve as a Customer Engagement Manager to support the GSA and other federal client agencies by providing customer engagement and operations planning support to customer agencies transitioning to the GO.gov e-gov travel services (ETS) shared service.
Fti ConsultingNewSenior Director, Finance Technology & Data Enablement Fti ConsultingSenior Director, Finance Technology & Data EnablementHouston, TXHands on Finance and Accounting Delivery: Execute complex projects for our CFO clients that leverage data enablement to deliver bespoke solutions in functional areas that include, but not limited to, technical accounting, accounting close & reporting, billing & collections, A/P management and FP&A reporting and planning. Background in delivering ERP and EPM Solutions with a Finance & Accounting led approach: The candidate will have functional knowledge and understanding of the data structure for one or more ERP and EPM solutions and ability to leverage ERP and EPM data sets to drive data-drive insights.
DoiT InternationalNewSolutions Engineer - Remote DoiT InternationalSolutions Engineer - RemoteHouston, TXRemoteDemonstrated experience with modern technical selling best practices and a successful track record in competitive sales environments, including the ability to contribute to and implement effective trial, demo, and RFP processes specifically tailored for Kubernetes optimization solutions like PerfectScale. 5+ years of experience in a Solutions Engineering role within a B2B SaaS software company, having a significant portion of that experience focused on selling to DevOps, Platform Engineering, SRE, or FinOps teams and directly addressing challenges related to Kubernetes or cloud cost management.
Unity SoftwareNewSenior Product Strategy Architect, Graphics Unity SoftwareSenior Product Strategy Architect, GraphicsHouston, TXDefine and own a product vision, strategy, and roadmap that is informed by technical product expertise, customer feedback from Unity Studio Productions and Customer Success organizations, Production Verification, market research, user feedback, and competitive analysisPartner with stakeholders (e.g. As a Product Strategy Architect in the Engine Product organization, you will play a pivotal role in defining product requirements with technical input on customer need, value, measurability, as well as the ability to use and demonstrate product in a hands-on fashion.
Grafana LabsNewStaff Software Engineer Grafana LabsStaff Software EngineerHouston, TXRemoteGrafana Labs also helps more than 3,000 companies -- including Bloomberg, JPMorgan Chase, and eBay -- manage their observability strategies with the Grafana LGTM Stack, which can be run fully managed with Grafana Cloud or self-managed with the Grafana Enterprise Stack, both featuring scalable metrics (Grafana Mimir), logs (Grafana Loki), and traces (Grafana Tempo). Our enterprise and SaaS offerings allow customers to load test their systems by running distributed tests from 15+ regions worldwide, using hundreds of thousands of virtual users sending millions of requests per second.
Grafana LabsNewSenior Solutions Engineer Grafana LabsSenior Solutions EngineerHouston, TXGrafana Labs also helps more than 3,000 companies -- including Bloomberg, JPMorgan Chase, and eBay -- manage their observability strategies with the Grafana LGTM Stack, which can be run fully managed with Grafana Cloud or self-managed with the Grafana Enterprise Stack, both featuring scalable metrics (Grafana Mimir), logs (Grafana Loki), and traces (Grafana Tempo). • 5+ years of technical pre-sales experience, ideally with Open Source technologies, or in the Metrics/Monitoring space while we will be adding more junior folks later on, right now we just need team members that can hit the ground running.
LitifyNewSenior Solution Engineer (Salesforce) LitifySenior Solution Engineer (Salesforce)Houston, TX$115,000–$135,000 / yearTo accomplish this, the Solution Engineer must have a strong desire to leverage their technical and/or sales skills, including the ability to solicit business requirements, develop a technical sales strategy, configure and effectively demonstrate the solutions that address these requirements and provide business value. The Solution Engineer (Sales Engineer/Solution Consultant) is responsible for presenting product offerings in a value-driven way to prospects and customers, with the end goal is to instill confidence in the technology and to remove all technical objections in the pre-sales efforts.
VAST DataNewDirector, Developer Relations VAST DataDirector, Developer RelationsHouston, TXIn this role, youll champion our technologies through workshops, technical content, and evangelism, helping customers and prospects understand how VAST Data and our API-first storage platform can transform their data pipelines and AI initiatives. We are building the enterprise software infrastructure to capture, catalog, refine, enrich, and protect massive datasets and make them available for real-time data analysis and AI training and inference.
VAST DataNewSenior Software Engineer VAST DataSenior Software EngineerHouston, TXOptimize Performance: Work on low-level data structures (like B-Trees or LSM-Trees), concurrency control mechanisms (MVCC), and query optimization algorithms to improve speed and efficiency. Design & Develop Database Components: Implement and enhance core database features, including the storage engine, query execution engine, and transaction manager.