Carollo Engineers Inc

Principal Engineer

Carollo Engineers Inc$130K — $160K *
Technical Services
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 10–15 years of experience in environmental consulting, ideal for those nearing the principal level.
  • Strong technical expertise in site investigation and remediation including soil, groundwater, vapor, and sediment.
  • Familiar with Washington's regulatory frameworks like MTCA, VCP, and PLIA.
  • Proven ability to cultivate business relationships and aid in business development efforts.
  • Initial or developing client network, even if still in the early stages.
  • Experience in leading proposals and engaging with clients effectively.
  • Strong communication, project management, and collaboration capabilities.

Responsibilities

  • Grow and develop a portfolio, utilizing existing clients and building new relationships.
  • Lead the preparation of proposals and pricing strategies with increased independence.
  • Serve as the lead on complex environmental projects, overseeing all aspects of technical execution.
  • Review and provide guidance on technical deliverables like work plans and regulatory documents.
  • Mentor and lead a small team, fostering their development and daily operations.
  • Identify new market opportunities and contribute to practice strategy decisions.
  • Manage project logistics including budgets, schedules, and team resources.

Benefits

  • Comprehensive compensation package with health and dental benefits, including vision and orthodontia coverage.
  • Generous paid time off and holidays, fostering a work-life balance.
  • 401(k) matching program for retirement savings optimization.
  • Company-paid life insurance and short & long-term disability insurance for added security.
  • Employee assistance program for personal and professional support.
Full Job Description
Role Many talented professionals reach a point in their careers where they’re ready to lead—but don’t yet have the platform, visibility, or autonomy to do so. This role is designed for that next step. We are seeking a principal-level environmental professional (Scientist, Engineer, or Geologist) to join and help grow our Bothell, WA Land Quality & Remediation (LQR) practice. This is an opportunity to: • Step into immediate leadership responsibility • Work with an existing base of projects and clients • Build and expand your own client relationships over time • Lead a small, high-performing, collaborative team • Help shape the future direction of the practice You will not be one layer among many. Your contributions will be visible, valued, and impactful. Responsibilities: What You’ll Do • Practice & Client Development • Grow and expand a portfolio of work—leveraging both existing SLR clients and your own emerging relationships • Build and deepen client relationships over time, supported by leadership, marketing resources, and established accounts • Lead proposals, scopes, and pricing strategies with increasing autonomy • Identify new opportunities, markets, and service offerings • Technical Leadership • Serve as Principal-in-Charge or senior technical lead on complex environmental projects • Provide high-level oversight of investigation, remediation, and regulatory strategy • Review and guide technical deliverables (work plans, RI/RA reports, remedy design, etc.) • Support innovative and practical solutions across MTCA, VCP, and PLIA projects • Team Leadership • Lead and mentor a small, dedicated team of staff across experience levels • Provide coaching, development, and day-to-day direction • Help shape team culture, priorities, and growth • Business & Operations • Operate in a seller-doer capacity, with flexibility based on your strengths and career goals • Manage project budgets, schedules, and staffing • Contribute to hiring, team growth, and practice strategy Why This Role is Different • Immediate leadership – Step into a team leadership role now, not years from now • Platform to grow – Inherit active work while building your own book at your pace • High visibility – Your impact directly shapes the practice • Entrepreneurial environment – Help define strategy, services, and growth • Support without heavy bureaucracy – Access national resources with local autonomy • Real career acceleration – Grow into a larger leadership role as the practice expands Working @ SLR With us, there is no doubt you’ll grow your subject-matter expertise and industry knowledge. We care about investing in our employees for the long-run, and if you ask our team, they’ll tell you that’s just one of the many benefits of working here. We want to be a place where you can experience career growth and satisfaction for many years. Here’s what else you’ll enjoy as part of our team: • Competitive total compensation package including medical, dental, orthodontia, vision, FSA/HSA, generous PTO accrual, 10 paid holidays, 401(k) retirement account with company matching program, company paid life insurance, short & long term disability insurance, and employee assistance program. • The salary range for this position is $130,000 - $160,000. Final agreed upon compensation will be commensurate with individual education, professional designation, experience, internal parity, and location. • Full-time, permanent role with opportunities for professional growth and advancement You’ll be part of a tight-knit Bothell team where collaboration, trust, and quality matter. We value: • Accessible leadership • Practical decision-making • Giving people room to grow into their potential At SLR, you’ll benefit from both local team culture and global resources. Qualifications/Education/Memberships: • Typically, 10–15 years of experience in environmental consulting, including time operating at or near the principal level • Strong technical background in site investigation and remediation (soil, groundwater, vapor, sediment) • Familiarity with Washington regulatory programs (MTCA, VCP, PLIA) • Demonstrated ability to build client relationships and contribute to business development • An emerging or developing network of clients—even if relationships are still early-stage • Experience supporting or leading proposals and client engagements • Entrepreneurial mindset and desire to help grow a practice • Interest in taking on greater leadership responsibility and mentoring others • Strong communication, project management, and collaboration skills Preferred • WA PE, LG, or LHG • Existing connections in industrial, real estate, energy, municipal, or redevelopment sectors • Experience with vapor intrusion, sediment, or emerging contaminants • Background working in larger firms or matrixed organizations

About Carollo Engineers Inc

Carollo Engineers is an environmental engineering consulting firm that specializes in the planning, design, and construction of water and wastewater facilities. The company was founded in 1933 and is headquartered in Seattle, Washington. Carollo Engineers has over 40 offices throughout the United States and provides services to clients in the municipal, state, and federal government sectors, as well as private industry. The company's services include water treatment, wastewater treatment, water resources planning, and environmental compliance. Carollo Engineers has received numerous awards for its work, including the American Council of Engineering Companies' Grand Conceptor Award.
Learn more about Carollo Engineers Inc
Size
1,400 employees
Industry
Founded
1933

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