NewCivil Professional Engineer (PE) Obrien Engineering IncCivil Professional Engineer (PE)Dallas, TXBenefits Summary: OEI offers competitive salaries and benefits including: Medical (8 plans to choose from), Vision, Dental, Simple IRA with 3% matching, Basic Term Life and Personal Accident Insurance, Basic Disability Insurance, Adoption Assistance Program, Educational Assistance Program, 8 Paid Holidays in addition to PTO. This position involves applying advanced engineering principles to plan, analyze, and execute civil engineering projects such as roads, bridges, water systems, and public facilities.
Structural Engineer EIT/PE JobotStructural Engineer EIT/PEDallas, TX$110,000–$140,000 / 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. Responsibilities include developing and guiding a structural engineering team to produce construction documents using Revit and managing project schedules to meet deliverable requirements.
NewMEP Engineer JobotMEP EngineerKrugerville, TX$80,000–$160,000 / 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. Load Calculations: Perform heating and cooling load calculations (e.g., HVAC loads, energy modeling) to select appropriate equipment.
Mechanical Engineer JobotMechanical EngineerPlano, TX$110,000–$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. Project experience spans healthcare, education (K–12 and higher ed), federal and military, justice, commercial, industrial, residential, hospitality, data centers, and other institutional markets.
NewElectrical Engineer JobotElectrical EngineerRichardson, TX$100,000–$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. Comply with federal, state, and local legal requirements by studying existing and new legislation, ensuring adherence to requirements, and advising management on needed actions.
VMware Engineer StefaniniVMware EngineerDallas, TX$35–$40 / hourTemporaryContractorOur presence is in countries like the Americas, Europe, Africa, and Asia, and more than four hundred clients across a broad spectrum of markets, including financial services, manufacturing, telecommunications, chemical services, technology, public sector, and utilities. About Stefanini Group: The Stefanini Group is a global provider of offshore, onshore and near shore outsourcing, IT digital consulting, systems integration, application, and strategic staffing services to Fortune 1000 enterprises around the world.
NewSr. Mechanical Engineer - Hybrid JobotSr. Mechanical Engineer - HybridDallas, TX$145,000–$165,000 / 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. Experienced in Commercial Buildings, Healthcare Projects, Theme Parks, Federal, Entertainment, Healthcare, Aviation, High-Rise, Multi-Family, etc.
HVAC Engineer JobotHVAC EngineerIrving, TX$85,000–$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. Based in Dallas, TX with we are a TOP Ranked Design, Architecture, and Engineering firm working on some of the nations top restaurant, retail, commercial, workspace and entertainment projects!
MEP Engineer - EIT JobotMEP Engineer - EITDallas, TX$75,000–$95,000 / 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.
Senior Electrical Engineer JobotSenior Electrical EngineerIrving, TX$115,000–$165,000 / 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. This person will have experience with engineering consulting firms, electrical power, lighting, fire alarm, and building systems for commercial buildings; with proficiency in Revit and AutoCAD.
Sr. Electrical Engineer JobotSr. Electrical EngineerAddison, TX$110,000–$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. They focus on keeping electrical equipment safe, reliable, and efficient, offering expertise in power system engineering, field services, and training.
NewAssociate, Mechanical Engineer (Greenville, TX) L3Harris TechnologiesAssociate, Mechanical Engineer (Greenville, TX)Greenville, TXEngineers will be responsible for research, development of layouts, preparation of engineering drawings, and coordination of design activities with Tooling, Flight Sciences, Manufacturing, and Production to ensure that designs meet requirements at minimum cost. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
Sales Engineer - Building Automation JobotSales Engineer - Building AutomationDallas, TX$85,000–$110,000 / yearAs our automation division continues to expand, we are seeking a highly technical Building Automation Systems Leader to drive design excellence, system innovation, and project execution across complex commercial and industrial environments. Our team works closely with engineers, contractors, and facility owners to deliver efficient, scalable control systems that optimize performance, energy usage, and occupant comfort across a wide range of building types.
NewCivil I Engineer (FE, EIT) Obrien Engineering IncCivil I Engineer (FE, EIT)Dallas, TXOEI offers competitive salaries and benefits including: Medical (8 plans to choose from), Vision, Dental, Simple IRA with 3% matching, Basic Term Life and Personal Accident Insurance, Basic Disability Insurance, Adoption Assistance Program, Educational Assistance Program, 8 Paid Holidays in addition to PTO. Develop feasible design alternatives and compare significant parameters such as typical sections, horizontal and vertical alignments, right-of-way requirements and cost.
REMOTE - Sr Fire Protection Engineer JobotREMOTE - Sr Fire Protection EngineerDallas, TXRemote$110,000–$155,000 / 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. Developing high quality drawings and specifications, the position involves continuous client service and client contact, including on-site meetings and data collection, with occasional travel required.
HVAC Controls Engineer – Building Automation JobotHVAC Controls Engineer – Building AutomationGrand Prairie, 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. A Texas-based building automation system software and controls contractor that specializes in the installation, repair, and service of BACnet DDC control and energy management systems.
Building Automation / BAS Applications Engineer JobotBuilding Automation / BAS Applications EngineerDallas, TX$90,000–$120,000 / yearA Texas-based building automation system software and controls contractor that specializes in the installation, repair, and service of BACnet DDC control and energy management systems. Texas-based building automation system software and controls contractor .
BAS Sales Engineer – Mission Critical / Data Centers JobotBAS Sales Engineer – Mission Critical / Data CentersDallas, TX$90,000–$120,000 / yearThis role focuses on developing and managing relationships with owners, operators, general contractors, engineering firms, and commissioning teams involved in hyperscale, colocation, and enterprise data center projects. A building automation and systems integration company that designs and implements building management and electrical power monitoring systems for mission-critical facilities, particularly data centers.
NewScientist, Project Engineer - Certification Lead PE L3Harris TechnologiesScientist, Project Engineer - Certification Lead PEPlano, TXThis role partners with engineering, program leadership, and other functional teams to enhance certification planning, improve execution frameworks, and enable consistent compliance outcomes across multiple products and programs. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
NewSpecialist, Electrical Engineer L3Harris TechnologiesSpecialist, Electrical EngineerGreenville, TXDesigns can include development of Avionics Systems, RF, LAN, Data Processing, Sensor Systems, Power Distribution Systems, Electrical Loads analysis, Load shedding scheme to name a few, along with the opportunity to support testing and integration of systems on the aircraft. Engineer will be responsible for research, systems integration, preparation of engineering drawings, and coordination of design activities with Systems Engineering, Manufacturing, and Production to ensure that designs meet requirements at minimum cost.
NewCivil 3D Design Engineer JobotCivil 3D Design EngineerCoppell, TX$70,000–$120,000 / yearWork with civil engineers in drafting engineering drawings that show topographical data and the assembly of site work construction documents, such as grading plans, storm sewer plans, water and sanitary sewer plans, and their associated profiles. 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.
NewMechanical Engineer PE System OneMechanical Engineer PECoppell, TX$100,000–$150,000 / yearSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Design and draft blueprints; visit systems in the field; manage and coordinate projects to meet deadlines.
NewSpecialist, Mechanical Engineer (Aircraft Design) L3Harris TechnologiesSpecialist, Mechanical Engineer (Aircraft Design)Greenville, TXResponsible for research, development of layouts, preparation of engineering drawings, and coordination of design activities with Tooling, Flight Sciences, Manufacturing, and Production to ensure that designs meet requirements at minimum cost. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
NewAssociate, Electrical Engineer (Greenville, TX) 1 L3Harris TechnologiesAssociate, Electrical Engineer (Greenville, TX) 1Greenville, TXDesigns can include development of Avionics Systems, RF, LAN, Data Processing, Power Distribution Systems, Electrical Loads analysis, Load shedding scheme to name a few, along with the opportunity to support testing and integration of systems on the aircraft. Research and preparation of engineering drawings, and coordination of design activities with Systems Engineering, Manufacturing, and Production to ensure that designs meet requirements at minimum cost.
NewSenior Specialist, Electrical Engineer - Power Lead L3Harris TechnologiesSenior Specialist, Electrical Engineer - Power LeadPlano, TXEngineer will be responsible for research, systems integration, preparation of engineering drawings, and coordination of design activities with Systems Engineering, Manufacturing, and Production to ensure that designs meet requirements at minimum cost. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
NewSr. Associate, Electrical Engineer L3Harris TechnologiesSr. Associate, Electrical EngineerGreenville, TXWork closely with the engineering community fulfilling the workflow cycle of their products as well as development teams for implementation/testing/execution of digital library data providing guidance back to the user community. Associate, Electrical Engineer will be responsible for taking library addition requests from end users and converting them into accurate digital data across integrated ECAD/MCAD/PLM tools.
NewSpecialist, Mechanical Engineer (Design) L3Harris TechnologiesSpecialist, Mechanical Engineer (Design)Plano, TXResponsible for research, development of layouts, preparation of engineering drawings, and coordination of design activities with Tooling, Flight Sciences, Manufacturing, and Production to ensure that designs meet requirements at minimum cost. The Mechanical Engineering Specialist will be responsible for participating in the design of detail parts, assemblies, and installations for aircraft structures, mission equipment installations, and mechanical systems installations.
NewSr. Scientist, Mechanical Engineer L3Harris TechnologiesSr. Scientist, Mechanical EngineerGreenville, TXResponsible for compiling and confidently presenting extensive technical and programmatic material both internally and externally to include Executive Leadership, Procurement Customers, and End Users. The individual will be an external and internal expert and thought leader with deep and substantive technical expertise as well as advanced business knowledge and leadership capabilities within our Aeronautical Systems engineering team.
NewPrincipal Systems Engineer, Platform Systems Engineering L3Harris TechnologiesPrincipal Systems Engineer, Platform Systems EngineeringGreenville, TXWe are seeking an experienced Lead Systems Engineer (LSE) to serve as the senior technical authority responsible for leading systems engineering execution across platform, baseline, or program. Coursework and/or experience in systems engineering, systems architecture, systems analysis and design, system performance modeling, integration and/or project management, and/or model-based systems engineering.
NewScientist, Mechanical Engineer L3Harris TechnologiesScientist, Mechanical EngineerGreenville, TXResponsible for compiling and confidently presenting extensive technical and programmatic material both internally and externally to include Executive Leadership, Procurement Customers, and End Users. The individual will be an external and internal expert and thought leader with deep and substantive technical expertise as well as advanced business knowledge and leadership capabilities within our Aeronautical Systems engineering team.
NewCommercial Construction Project Engineer - 2026 HITT ContractingCommercial Construction Project Engineer - 2026Dallas, TXMaster required job-specific and technical skills in order to promote to an assistant superintendent or assistant project manager following the 12-month training program including, but not limited to, the ability to: Set up and maintain jobsite office and all jobsite records, including project directory, construction documents, subcontractor directory, daily reports, submittal logs, RFI logs, subcontractor correspondence, etc. Ability to learn sector- and project-specific software systems, including but not limited to: Microsoft Office 365 (Project, Excel, Word, Outlook, PowerPoint, etc.), ProCore, Adobe Suite, BlueBeam, and JD Edwards software suite.
NewData Scientist AI Engineer Mitchell MartinData Scientist AI EngineerDallas, TX$49–$70 / hourMonitor and analyze new technology product performance and address complex improvement or modification issues as needed. High-level programming language | CI/CD tools | Database management | Data embedding techniques.
NewSoftware Engineer NucorSoftware EngineerDallas, TXExperience building product features with direct user impact, demonstrated by gathering user feedback, iterating based on that feedback, and measuring outcomes through adoption, efficiency, quality, or other defined performance metrics. Nucor Business Technology (NBT) is building the next generation of manufacturing software for Nucor's steel operations — and we're looking for a Software Engineer who cares as much about outcomes as they do about code.
NewApplied Early Career Program - Field Service Engineer APPLIED MATERIALSApplied Early Career Program - Field Service EngineerDallas, TX$27–$37.40 / hourSalary: $27.00 - $37.40 Location: Austin,TX, Bloomington,MN, Boise,ID, Chandler,AZ, Dallas-Richardson,TX, Hillsboro,OR, Phoenix,AZ You’ll benefit from a supportive work culture that encourages you to learn, develop, and grow your career as you take on challenges and drive innovative solutions for our customers. If you would like to contact us regarding accessibility of our website or need assistance completing the application process, please contact us via e-mail at Accommodations_Program@amat.com, or by calling our HR Direct Help Line at 877-612-7547, option 1, and following the prompts to speak to an HR Advisor.
Senior Java & AI Engineer | AI Agent Development Resolution Technologies, Inc.Senior Java & AI Engineer | AI Agent DevelopmentPlano, TX$135,000–$150,000 / yearFull timeAs part of our AI-forward engineering culture, this role also takes ownership of the AI development environment including coding agents, tools, workflows, and infrastructure to maximize engineering velocity, quality, and consistency. Experience with AI-assisted development tools (GitHub Copilot, ChatGPT, Claude, or similar) and ability to effectively integrate generative AI into the software development lifecycle for code generation, debugging, and optimization.
NewAerospace Quality Engineer Davron LLCAerospace Quality EngineerDallas, TXAEROSPACE QUALITY ENGINEER | QUALITY ENGINEER | AS9100 | ISO | CORRECTIVE ACTION | ROOT CAUSE ANALYSIS | AUDITS | GD&T | BLUEPRINT READING | MICROMETERS | MRP SYSTEMS | MICROSOFT OFFICE . In this Aerospace Quality Engineer opportunity, you’ll combine hands-on quality engineering with audits, corrective action leadership, and supplier support in a fast-paced manufacturing environment.
NewL5 Network Engineer (AWS Cloud) Vaco LLCL5 Network Engineer (AWS Cloud)Addison, TXRemote$105–$125 / hourThe Network Engineer L5 will be heavily focused on enterprise-grade, multi-site networking within hybrid cloud environments, leveraging AWS Cloud WAN, AWS Transit Gateway, satellite connectivity, and mesh Wi-Fi technologies to deliver resilient, secure, and scalable connectivity solutions. The Network Engineer L5 will work closely with cross-functional teams to integrate on-prem and cloud-based environments, support IoT connectivity initiatives, and ensure network segmentation, compliance, and operational reliability across the enterprise landscape.
NewLead .NET Integration Developer/ Engineer Pinnacle Technical ResourcesLead .NET Integration Developer/ EngineerFort Worth, Texas$55–$60 / 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. The ideal candidate will play a pivotal role in leading development efforts for HRIS integration projects, collaborating with both onshore and offshore development teams.
NewSenior Manager, Information Security Systems Engineer L3Harris TechnologiesSenior Manager, Information Security Systems EngineerGreenville, TXWorks closely with Government customers, program managers, and chief engineers to ensure that the security protection needs, concerns and requirements are defined and implemented with appropriate fidelity and rigor, early and in a sustainable manner throughout the life cycle of system that results in obtaining and maintaining security authorizations. Experience or proficiency with Linux and Windows administration, bash, Python, Ansible, PowerShell scripting, Python, Windows PowerShell, Nessus, Wireshark, Nmap, Elastic Stack (Elasticsearch, Logstash and Kibana).
Software Engineer (Full Stack Python) Tanisha SystemsSoftware Engineer (Full Stack Python)Dallas, TXFull time5 to 7 years of full Software Development Life Cycle (SDLC) experience designing, developing, and implementing large-scale applications (front-end and back-end development). · Decomposes intricate and interconnected designs into implementations that can be effectively built and maintained by less experienced engineers.
NewLead Systems Engineer, Systems Engineering L3Harris TechnologiesLead Systems Engineer, Systems EngineeringGreenville, TXWe are seeking an experienced Lead Systems Engineer (LSE) to serve as the senior technical authority responsible for leading systems engineering execution across platform, baseline, or program. Coursework and/or experience in systems engineering, systems architecture, systems analysis and design, system performance modeling, integration and/or project management, and/or model-based systems engineering.
NewPrincipal Project Engineer - Technical Export Focal L3Harris TechnologiesPrincipal Project Engineer - Technical Export FocalPlano, TXThe Project Engineer Technical Export Focal develops and authors key licensing artifacts in support of export license applications, including Technical Assistance Agreements (TAAs) and DSP-5 marketing licenses, and ensures these documents accurately reflect technical scope, constraints, and risk considerations in coordination with Global Trade Compliance. Partnering with Global Trade Compliance, this role partners closely with cross-functional stakeholders including Program Management, Business Development, Engineering, Operations, Security, Supply Chain, and Quality to ensure all technical data, hardware, and partner engagements comply with both regulatory and corporate requirements.
NewJunior Software Engineer (Remote)/Power bi developer with Snowflake SynergisticITJunior Software Engineer (Remote)/Power bi developer with SnowflakeRichardson, TXRemote$82,000–$136,000 / yearFull timeSince 2010, we’ve helped thousands of candidates land full-time jobs at tech leaders like Google, Apple, PayPal, Visa, Western Union, Wells Fargo, Intel, Paypal, JPMC, Wayfair, BOA, CITI and hundreds more with Job offers of $95k to $154k. Currently, We are looking for entry-level software programmers, Java Full stack developers, Python/Java developers, Data analysts/Data Engineers/ Data Scientists, Machine Learning engineers for full time positions with clients.
NewSpecialist, Electrical Engineer (Sustainment) L3Harris TechnologiesSpecialist, Electrical Engineer (Sustainment)Greenville, TXProactive and regular in-person and electronic coordination, meetings, and interactions with many diverse organizations (aircraft mechanics, manufacturing, program management, customer representatives, OEM, vendors, and other engineering disciplines) to facilitate tailored engineering repair or replacement solutions on various aircraft platforms. Must be able to walk to and from the flight line, work in aircraft hangar and manufacturing environment, board/exit aircraft, to include accessing and maneuvering in restricted/limited spaces such as aircraft wing and body fuel tanks, and walking on wings and fuselage (with appropriate safety gear).
NewSenior Specialist, Systems Engineer L3Harris TechnologiesSenior Specialist, Systems EngineerGreenville, TXThe Senior Specialist, Systems Engineer will be responsible for the architectural design, development, and analysis of advanced FPGA and GPU‑based signal processing solutions supporting complex ISR sensor systems. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
NewLead, Project Engineer L3Harris TechnologiesLead, Project EngineerGreenville, TXTo this end, the individual Engineering Functional Task Leaders (Systems Engineering, Software Engineering, Aeronautical Engineering, Specialty Engineering, Logistic Engineering, Technical Publications, etc.) report to/and take directions from the PE for the assigned program operations. The Project Engineer holds technical responsibility and authority for the program under the authority from Engineering Leadership to execute assigned programs, as well as direct integration with the Program Manager (PM).
NewSenior Specialist, Systems Engineer - FPGA & GPU L3Harris TechnologiesSenior Specialist, Systems Engineer - FPGA & GPUGreenville, TXThe Senior Specialist, Systems Engineer will be responsible for the architectural design, development, and analysis of advanced FPGA and GPU‑based signal processing solutions supporting complex ISR sensor systems. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
NewSenior Specialist, Systems Engineer - ELINT L3Harris TechnologiesSenior Specialist, Systems Engineer - ELINTGreenville, TXL3Harris is seeking a Systems Engineering Specialist who will be involved in activities directly related to the design, and development of complex, specialized SIGINT hardware/software systems to process and manipulate ISR data from multiple data sources. Interface with other Systems Engineers, Agile Development Engineering, Flight Line Test, Product Development, and Project Engineering to understand new baseline functionality.
NewSenior Specialist, Project Engineer L3Harris TechnologiesSenior Specialist, Project EngineerGreenville, TXTo this end, the individual Engineering Functional Task Leaders (Systems Engineering, Software Engineering, Aeronautical Engineering, Specialty Engineering, Logistic Engineering, Technical Publications, etc.) report to/and take directions from the PE for the assigned program operations. The PE coordinates with the Functional Managers in the utilization of and Earned Value (EV) reporting via the Labor Tracking System (LTS) to ensure consistency between the Functional and Program roll-up relative to performance against schedule and budgeted work scope.
NewCircuit Design Engineer PlanIT GroupCircuit Design EngineerGrand Prairie, TXYour responsibilities will include: • Working within the Electrical Engineering team and cross functional teams to effectively address integration and interface challenges. Basic Qualifications: • Bachelor of Science degree or higher from an accredited college in Electrical Engineering or equivalent, with a minimum of three years of professional experience.