Sr Manager, Water Treatment / Production American Water Works Co IncSr Manager, Water Treatment / ProductionNJ$101,760–$170,050 / yearManage and monitor the effectiveness of security efforts at all production facilities, including the preparation of Vulnerability Assessments and Emergency Response Plans. The Senior Manager of Treatment will manage the personnel, capital resources, and business processes that are engaged in the functional area of Production.
Senior Structural Bridge Engineer - Pennsylvania Parsons CorpSenior Structural Bridge Engineer - PennsylvaniaPlymouth Meeting, PA$88,400–$154,700 / yearWe design and build Arch Bridges, Beam Bridges, Cantilever Bridges, Suspension Bridge, Cable-Stayed Bridges, Tied-Arch Bridges, and Truss Bridges. We take special pride in projects and solutions that improve communities as well as people's quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency.
Senior Associate - Workers'' Compensation Chartwell Law Offices LLPSenior Associate - Workers'' CompensationKing of Prussia, PAConflict Management - Service Supervisors address problems openly and objectively and bring substantial conflicts and disagreements into the open with the intention of resolving issues in an unemotional and constructive manner. The Senior Associate attorney will handle complex litigation matters across various practice areas, managing cases from inception through resolution, delivering strategic legal counsel, and representing clients in court, arbitrations, and depositions.
Senior Project Manager Commercial Utilities Dewberry Engineers IncSenior Project Manager Commercial UtilitiesKing of Prussia, PADewberry's growing Commercial Utilities - Energy/Renewables Group is looking for a Senior Project Manager in the Philadelphia area to play a key role in delivering complex, high‑impact infrastructure projects. In this role, you'll lead project strategy from pursuit through delivery, guide technical quality, manage project financials, and mentor developing professionals.
Senior Property Manager Colliers International Group IncSenior Property ManagerPhiladelphia, PAAs Senior Property Manager, you will be involved in all aspects of managing your assigned portfolio, from operations and financial activities to managing important relationships with our tenants, property owners and vendors. Able to work under pressure, manage multiple deadlines, effectively handle stressful situations, work intuitively and with minimal direction/supervision.
Senior Engineering Manager, API Hub Bentley Systems IncSenior Engineering Manager, API HubPhiladelphia, PAFounded in 1984 by engineers for engineers, Bentley is the partner of choice for engineering firms and owner-operators worldwide, with software that spans engineering disciplines, industry sectors, and all phases of the infrastructure lifecycle. You will run delivery and sprint planning, make technical decisions in partnership with the Senior Principal Engineer, and remain actively involved in the code, contributing hands-on for a meaningful portion of your time.
Senior FOIA Disclosure Product Manager Contact Government Services LLCSenior FOIA Disclosure Product ManagerPhiladelphia, PAFor the past seven years, weve been growing our government-contracting portfolio, and along the way, weve created valuable partnerships by demonstrating a commitment to honesty, professionalism, and quality work. • Drive the execution of the SecureRelease product, including product research, market research, competitive analysis, planning, positioning, roadmap development, requirements development, and product launch.
Senior Environmental Project Manager (Upstream - California) GHD Group Pty LtdSenior Environmental Project Manager (Upstream - California)King of Prussia, PA$84,100–$106,800 / yearGHD will reimburse 50% of the cost of the following to maximum of $250.00 reimbursement annually for such items as: Health club membership fees, Home exercise equipment purchases, Bicycles, Race, run & marathon entrance fees, Smoking cessation programs, Weight loss programs (i.e.-Weight Watchers, Jenny Craig), Fitbits and Fitness Tracking devices. 8+ years of upstream oil & gas environmental consulting experience including environmental remediation and site assessments, report writing, data management & interpretation, project coordination, and managing clients.
Sr. Architect Larson Design Group IncSr. ArchitectKing of Prussia, PASupport project managers and leadership in proposal development, scope definition, budgeting, and labor-hour estimating, providing technical insight aligned with commercial project delivery models. At Larson Design Group (LDG), we're more than an award-winning Architecture, Engineering, and Consulting firm; we're a team of passionate professionals united by a bold purpose: creatively shaping our world.
Sr. Engineer - Water/Wastewater Larson Design Group IncSr. Engineer - Water/WastewaterKing of Prussia, PAThis position will coordinate overall design activities, project submission schedules, and will be responsible for additional Quality Assurance and Quality Control duties to help ensure the final products meet the technical requirements and goals of the client. • Proficiency with Revit, AutoCAD Civil 3D, and/or Hydrologic and Hydraulic Software Packages to be used for Site Layout, Grading, Utility, and Storm Water Management Plan design and/or other discipline-specific programs preferred.
Kahua/PMIS Technology Senior Consultant - Infrastructure and Capital Projects Deloitte Touche Tohmatsu LtdKahua/PMIS Technology Senior Consultant - Infrastructure and Capital ProjectsPhiladelphia, PA$88,800–$162,800 / yearOur Sustainability, Infrastructure, Real Estate, & Resilience offering advises clients on climate and disaster-related risks through comprehensive strategy, planning, and crisis management, while also providing expertise in capital investments, infrastructure projects, and real estate portfolio optimization. From strategy to execution, this team delivers integrated, end-to-end support and advisory services covering valuation modeling, cost optimization, restructuring, government operations modernization, business design and transformation, infrastructure and real estate, mergers and acquisitions (M&A), and sustainability.
Senior Estimator Southland IndustriesSenior EstimatorPAThe position is responsible for estimating bids for various markets including; hospitality, healthcare, data centers, commercial, institutional, municipal, and other projects in the public and private sector. Candidate ownership can only be established after a bona fide work order is issued by a member of the Southland Industries Talent Acquisition team and the candidate is appropriately submitted through our Applicant Tracking System (ATS).
Senior Principal Engineer, API Hub Bentley Systems IncSenior Principal Engineer, API HubPhiladelphia, PAFounded in 1984 by engineers for engineers, Bentley is the partner of choice for engineering firms and owner-operators worldwide, with software that spans engineering disciplines, industry sectors, and all phases of the infrastructure lifecycle. Around the world, infrastructure professionals rely on software from Bentley Systems to help them design, build, and operate better and more resilient infrastructure for transportation, water, energy, cities, and more.
Senior Software Engineer - Typescript Bentley Systems IncSenior Software Engineer - TypescriptPhiladelphia, PAIn this role, you will work across the full technology stack, from front ends to backend services and cloud integrations, applying solid architectural principles and modern design‑pattern practices to deliver secure, performant, and reliable features that our users depend on. We're seeking a Senior Software Engineer with a strong passion for building commercial‑grade engineering software used by professionals worldwide.
VDC Project Lead I II Sr Southland IndustriesVDC Project Lead I II SrPhiladelphia, PAThe VDC Project Lead drives the successful execution of projects serving as a key liaison between VDC teams, enterprise stakeholders, and project leadership. Candidate ownership can only be established after a bona fide work order is issued by a member of the Southland Industries Talent Acquisition team and the candidate is appropriately submitted through our Applicant Tracking System (ATS).
Senior Federal Compliance Specialist GHD Group Pty LtdSenior Federal Compliance SpecialistPAThat's why we pledge to support and empower all our people to make a positive impact when working hand in hand with our business to motivate change. Working with an energetic and high performing team, this position offers a variety of work and will see you involved in: Financial analysis on Federally funded contracts.
NewSenior Capital Engineer MDAEdgeSenior Capital EngineerLansdale, PACapital Project Engineer will plan, support, and where applicable, execute engineering deliverables for one or more of our broad core technology or engineering area. Analyze and develop solutions to engineering problems related to manufacturing equipment and systems or the causes of component failures.
Senior Geotechnical Engineer WECTEC Staffing Services LLCSenior Geotechnical EngineerPhiladelphia, PAWe are seeking an energetic professional engineer to manage geotechnical engineering projects, and provide analysis, design, and construction services for our clients. They provide civil, environmental, and geotechnical engineering, and surveying services.
Senior Foia Disclosure Product Manager CONTACT GOVERNMENT SERVICESSenior Foia Disclosure Product ManagerPhiladelphia, PA$149,760–$216,320 / yearDrive the execution of the SecureRelease product, including product research, market research, competitive analysis, planning, positioning, roadmap development, requirements development, and product launch. For the past seven years, we've been growing our government-contracting portfolio, and along the way, we've created valuable partnerships by demonstrating a commitment to honesty, professionalism, and quality work.
Senior Technical Manager, Structural Engineering WSP Global IncSenior Technical Manager, Structural EngineeringNJApply high-level structural and civil engineering techniques and processes to identify improvements for various infrastructure project phases involving more complex building, infrastructure, and transportation engineering work including concept development, preliminary design, final design, procurement, construction, and operation. Lead larger-scale structural engineering projects ensuring contributors know what they are required to do and by when, preparing and overseeing relevant project budgets, monitoring external events, tracking hours and expenses, ensuring satisfactory performance, and supervising subcontractors, contract work, and employees.
Assistant Superintendent (New Grad 2027) ARCO a Family of Construction CompaniesAssistant Superintendent (New Grad 2027)King of Prussia, PennsylvaniaNECESSARY QUALIFICATIONS: Recent or soon-to-be graduate of an accredited Civil, Mechanical, Architectural, Construction Management, Building Science, or Construction Engineering undergraduate or graduate program (other related engineering majors will be considered) . Jobsite Meetings – Lead and participate in jobsite coordination meetings with project managers, regional managers, subcontractors, and other project team members.
general-superintendent-new-england-region Burns & McDonnellgeneral-superintendent-new-england-regionConshohocken, PAOversee and direct the final construction documentation turnover process to clients, including construction turnover to clients or internal startup and commissioning teams, depending on the project, may support Site Manager with the same activities. Oversee and direct construction progress tracking and forecasting, including Field Progress Measurement System, Critical Path Scheduling, and commodity tracking systems, depending on the project, may support Site Manager with the same activities.
Preconstruction Subject Matter Expert (SME) - Construction Technical Sales Autodesk IncPreconstruction Subject Matter Expert (SME) - Construction Technical SalesPA$154,900–$277,750 / yearWorking closely with Autodesk account teams, you will support complex sales opportunities, connect customer challenges to measurable business outcomes, and help organizations modernize preconstruction processes using Autodesk Forma solutions. You will bring deep expertise in preconstruction workflows - including estimating, quantity takeoff, bid management, subcontractor qualification, procurement planning, budgeting, and risk mitigation - to help customers improve how they plan, pursue, and win work.
Senior Structural Project Engineer Thornton TomasettiSenior Structural Project EngineerPhiladelphia, PennsylvaniaThornton Tomasetti, Inc., seeks Senior Project Engineers - Structure in Philadelphia, Pennsylvania: Communicates and coordinates with clients and consultants (e.g., architects and civil/mechanical/electrical/plumbing engineers) to ensure clear understanding of project goals and expectations. Individuals seeking employment at Thornton Tomasetti are considered without regards to age, ancestry, color, gender (including pregnancy, childbirth, or related medical conditions), gender identity or expression, genetic information, marital status, medical condition, mental or physical disability, national origin, protected family care or medical leave status, race, religion (including beliefs and practices or the absence thereof), sexual orientation, military or veteran status, or any other characteristic protected by federal, state, or local laws.
Senior Accountant Tarkett SASenior AccountantConshohocken, PAThe Senior Accountant plays a critical role in maintaining the financial integrity of the organization by overseeing day-to-day accounting operations, leading month-end close activities, supporting audits, delivering financial analysis, and ensuring accurate reporting. Delivering end-to-end design-build capabilities for elite facilities, Anchor Management Group specializes in Feasibility Studies, Master Planning, Engineering, Design-Build, Pre-Construction, and Construction Management services.
Construction Intern Philadelphia The H&K GroupConstruction Intern PhiladelphiaPhiladelphia, PAActively enrolled and in good academic standing in a bachelor's degree program in Construction Management, Construction Science, or a related field from an four-year college or university. In this role you'll have the opportunity to work cross-functionally with multiple departments and/or business partners, applying what you've learned in class to various projects.
Construction Inspector TPDConstruction InspectorCherry Hill, New JerseyOur ideal candidate is seeking to grow their knowledge on highway, roadway and bridge projects throughout NJ with agencies such as NJDOT, NJTA, SJTA, DRPA, DRJTBC, and/or experience with Local County and State agencies. Ranked the #4 Large Employer to Work for in America and residing in the Top 400 on Engineering News Record (ENR)'s List of Top Design Firms in the nation, TPD is currently hiring Construction Inspectors.
Senior Claim Director-Westchester Casualty Chubb LtdSenior Claim Director-Westchester CasualtyPhiladelphia, PA$79,300–$134,700 / yearThe Senior Claim Director, Westchester Casualty, is responsible for investigating, adjusting, and driving to resolution high exposure and high-risk claims while ensuring a high level of customer service and claim file quality. Strong Communication Skills - including the ability to listen effectively; to confidently and diplomatically express opinions and voice concerns with other team members; and to present superior written communication to varied audiences.
New Jersey/New York- Senior Project Manager / Client Service Leader - Water & Wastewater WSP Global IncNew Jersey/New York- Senior Project Manager / Client Service Leader - Water & WastewaterNJ$145,400–$259,100 / yearAs a Senior Project Manager / Client Service Leader, you will serve as a trusted advisor to municipal utilities, sewerage authorities, and public-sector clients - while building WSP''s presence across one of the most active infrastructure markets in the country. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.
Project Controls - Senior Director - Project Farma PerkinElmer US LLCProject Controls - Senior Director - Project FarmaNJAt more senior levels, this role is accountable for shaping strategy, leading leaders, and driving sustained business impact across a significant area of the organization, while influencing enterprise-level decisions, ensuring operational excellence, and developing leadership talent to balance short-term execution with long-term growth objectives. Project Farma (PF) team members collaborate with cross-functional teams to build trusted client relationships, deliver an exceptional customer experience, and contribute to business growth by identifying opportunities and applying data-driven insights to support project planning, cost, schedule, and performance management.
Senior Specialist, Project Controls Aecon Group IncSenior Specialist, Project ControlsNJ$120,000–$150,000 / yearAre committed to supporting and investing in inclusive work environments, through initiatives like Diversity, Equity, Inclusion, & Accessibility training, our Aecon Women in Trades and Aecon Diversity in Trades programs, and our Employee Resource Groups (ERGs) to ensure we are building inclusion into every aspect of our culture at Aecon. Reporting to the Project Controls Director, the Senior Project Controls Specialist will be responsible for providing project controls support to Aecons ongoing mega-projects in the Nuclear sector.
Geotechnical Senior Project Engineer Engineering Consulting Services LtdGeotechnical Senior Project EngineerMount Laurel, NJ$85,000–$115,000 / yearECS is currently ranked #60 in Engineering News-Record's Top 500 Design Firms (April 2026), #148 in Engineering News-Record's Top 200 Environmental Firms (October 2025) and #50 in Zweig Group's Hot Firm List (May 2025). ECS Limited is seeking an experienced Geotechnical Senior Project Engineer to manage key client projects in our Philadelphia office.
Senior Director, Business Development - Northeast Jensen HughesSenior Director, Business Development - NortheastPhiladelphia, MassachusettsToday, our expertise extends broadly across closely related security and risk-based fields – from accessibility consulting and risk analysis to process safety, forensic investigations, security risk consulting, emergency management, digital innovation and more. The Senior Director will work with the Operations Leaders and the local teams to strategically drive new proposals and orders for the full range of professional consulting services across the sub region.
Field Superintendent (Telecommunications / Fiber) Greenlight NetworksField Superintendent (Telecommunications / Fiber)Camden, New JerseyThis includes daily tracking of Quality Check Punchlist items, live running tracker of our construction print to notate any changes, and submitting field-verified as-builts upon completion of the project. Problem-Solving: Proactively address construction challenges to keep projects on track, utilizing problem-solving techniques to resolve issues efficiently, including emergency response availability and coordination.
Senior Executive Assistant Rhoads Industries IncSenior Executive AssistantPhiladelphia, PAThe Senior Executive Assistant provides high-level administrative support to the Chief Operations Officer by conducting research, preparing reports, handling information requests, and performing clerical functions such as preparing correspondence, receiving visitors, arranging conference calls, and scheduling meetings. Rhoads' capabilities enable our customers to achieve superior results by deploying our diverse, highly skilled workforce and fabrication capabilities across commercial, government and maritime projects, all backed by state‐of‐the‐art resources and a 100+ year legacy of leadership.
Senior Infrastructure Specialist, Enterprise Compute and Storage WSP Global IncSenior Infrastructure Specialist, Enterprise Compute and StoragePA$89,600–$156,600 / yearWSP USA is providing the compensation range that the company in good faith believes it might pay and/or offer for this position within the state of Colorado, based on the successful applicant's education, experience, knowledge, skills, and abilities in addition to internal equity and specific geographic location. To ensure the efficient operation of WSPs internal Enterprise Compute and Storage services, we are seeking a talented and experienced Senior Enterprise Compute and Storage Infrastructure Specialist.
Senior Environmental Engineer Stantec IncSenior Environmental EngineerMount Laurel, NJThis position will support program/project management, team development and mentorship to EIT's, and provide technical support for remediation and permitting projects (e.g., SPCC, E&S, soil, groundwater, sediment, etc.). Collaborate with and support interdisciplinary engineering design teams to develop and implement multi-discipline solutions for soil, groundwater, sediment, and vapor remediation projects.
Senior Environmental Planning and Siting Specialist WSP Global IncSenior Environmental Planning and Siting SpecialistPhiladelphia, PAGather background data for project areas, prepare siting and routing maps, participate in meetings to document findings to clients and/or agencies, participate in public open house meetings, conduct windshield surveys of proposed sites and/or routes, and document the siting process at the end of the process into a defensible report. Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service.
Senior Estimator ZarrellcoSenior EstimatorKing of Prussia, PennsylvaniaA leading general contractor in the King of Prussia area is seeking a Senior Estimator to play a key role in preconstruction and bidding efforts across a diverse portfolio of projects including healthcare, education, commercial, and life sciences work. This position is ideal for someone who can lead estimates, mentor junior staff, and contribute to winning work in a competitive market.
Sr. Structural Engineer Penn Technical StaffingSr. Structural EngineerTrenton, NJJob Responsibilities: Inspect project sites and evaluate contractor work to detect design malfunctions and ensure conformance to design specifications and applicable codes; Coordinate and direct projects, making detailed plans to accomplish goals and direct the integration of technical activities; Prepare project status reports and works to ensure plans adhere to contract specifications; Communicate directly with contractors and designers concerning project cost, staffing, and scheduling; Provide technical advice regarding design, construction, or program modifications and structural repairs to other project members and contractors. Job Requirements: BS Degree in Civil Engineering; 6+ years of structural engineering experience; Strong Knowledge of Statics, Mechanics of Materials and Structures Analysis; Must have strong proficiency in Microsoft Office and Autodesk AutoCAD software.#IND.
Environmental Senior Project Manager (Licensed Site Remediation Professional) Engineering Consulting Services LtdEnvironmental Senior Project Manager (Licensed Site Remediation Professional)Mount Laurel, NJ$120,000–$150,000 / yearECS is currently ranked #60 in Engineering News-Record's Top 500 Design Firms (April 2026), #148 in Engineering News-Record's Top 200 Environmental Firms (October 2025) and #50 in Zweig Group's Hot Firm List (May 2025). Communicate with junior staff to direct field work performed by drill crews, test pit crews and assist with rig access issues on Groundwater, soil, and vapor intrusion investigations.
Senior Project Manager - Architecture Colliers Engineering & DesignSenior Project Manager - ArchitecturePhiladelphia, PennsylvaniaFull timeWe have also created an internal culture that provides the resources and technology needed to encourage personal and professional growth opportunities through reimbursement for education; a free in-house resource for hundreds of educational and self-enrichment courses; mentorship program; wellness program; Women’s Organization and ongoing philanthropic opportunities. In this leadership role, you’ll guide complex, large-scale projects from concept through completion, overseeing scope, schedule, quality, and budget while mentoring and directing a team of talented professionals—including other Project Managers.
Project Superintendent I - Northeast Region Peak Construction CorpProject Superintendent I - Northeast RegionEast Windsor, NJ$100,000–$130,000 / yearWe take pride in delivering excellence often beginning with land development and site analysis across Industrial, Freezer/Cooler, Hospitality, Healthcare, Commercial, and Specialty markets - but what truly sets us apart is our people. Training, Education & Culture Building You will cultivate a culture of continuous improvement and knowledge-sharing by leading safety training initiatives, orientations for new workers, and ongoing communication with subcontractors.
Senior Municipal Engineer Colliers Engineering & DesignSenior Municipal EngineerMt. Laurel, New Jersey$81,900–$95,130 / yearFull timeWe have also created an internal culture that provides the resources and technology needed to encourage personal and professional growth opportunities through reimbursement for education; a free in-house resource for hundreds of educational and self-enrichment courses; mentorship program; wellness program; Women’s Organization and ongoing philanthropic opportunities. As a key leader on our municipal team, you’ll take on meaningful, high-visibility projects, from initial design concepts to construction oversight, working hand-in-hand with public agencies, utilities, and multidisciplinary experts across the organization.
Senior Environmental Scientist, Geologist, Engineer Or Hydrogeologist LanganSenior Environmental Scientist, Geologist, Engineer Or HydrogeologistPhiladelphia, PAFor environmental scientist, interest in the NJ LSRP program and potential future licensure; Experience conducting Phase I and II environmental site assessment including drilling observation, sampling, well installation, construction/remediation oversight; Experience performing small and large scale groundwater treatment system design, operation and maintenance, and optimization; Experience providing litigation support services for expert witness projects, or similar; In-depth knowledge and understanding of state and federal environmental regulations (including CERCLA and RCRA); Specific experience highly preferred for NJDEP and the LSRP program, and/or PADEP Act 2; Experience working with state regulatory agencies; Excellent written and verbal communication skills; Strong attention to detail with excellent analytical, multitasking, and judgment capabilities; Ability to effectively work independently and in a team environment; Availability to work overtime as needed; and. Bachelor's degree in Environmental Science, Environmental Engineering, Geology or Hydrogeology; 4+ years of related experience in contaminated sites investigation, engineering feasibility studies, remedial and mitigation system design and construction oversight; For engineers and geologist, possession of a valid Professional licensure or ability to obtain within one year.
Senior Buildings Science Architect/Engineer Stantec IncSenior Buildings Science Architect/EngineerPhiladelphia, PAOur Building Specialty Services group is seeking a Senior Leader to join and guide our team, providing excellence in business practices and technical leadership in the building science industry. The successful candidate will be in a leadership position responsible for driving this service line forward from a business perspective within the Building Specialty Services Business Unit in the US Northeast.
Sr. Electrical Engineer Penn Technical StaffingSr. Electrical EngineerBurlington, NJJob Requirements: BS degree Electrical Engineering; PE License preferred, otherwise EIT with the ability to sit for the PE exam within 1-2 years; Experience in the development and design of: Electrical power distribution; Instrumentation control systems; Control strategies for process and building systems; Lighting, communication and security systems.#IND. Responsibilities include the development and design of power distribution, control strategies for process and building systems, instrument control systems, lighting, security and communication systems for state-of-the-art R&D and manufacturing facilities.
Sr. Structural Engineer - Parking Structures Penn Technical StaffingSr. Structural Engineer - Parking StructuresBlue Bell, PAThe ideal candidate for the position of a Senior Engineer is a licensed Professional Engineer (PE) with a Bachelor's or Masters of Science in Civil or Architectural Engineering (Structural) and minimum 15 years of experience in structural design and restoration of multi-level parking and mixed-use structures. Candidates must also possess the communication and interpersonal skills necessary for effective project team collaboration and relationship building (internal & external teams).
NewSenior Civil Highway Engineer_Department Manager KsengSenior Civil Highway Engineer_Department ManagerMount Laurel, NJResponsibilities Lead and/or conduct Civil Engineering design tasks including geometrics, profiles/grading, drainage/storm water management, soil erosion and sediment control, traffic signs and markings, maintenance, and protection of traffic. We are headquartered in Newark, NJ, with regional offices in New York City and Newburgh, NY; Philadelphia and Pittsburgh, PA; Mount Laurel and Mount Arlington, NJ; and Rocky Hill, CT.
Sr. Field Performance Technician SunrunSr. Field Performance TechnicianCherry Hill, New JerseyRegularly exceed defined goals for field performance key performance indicators including but not limited to turnaround time, experience rating and average dispatches completed. Ability to work on rooftops with various angles and surfaces which requires frequent bending, twisting, squatting, climbing, kneeling, crawling, turning, standing, and balance.