Senior Risk Assessor


Warrington, PA, US, 18976-3653 Philadelphia, PA, US, 19103-3638 Canonsburg, PA, US, 15317-9540 Boston, MA, US, 02114 New Haven, CT, US, 06511-6107 Cleveland, OH, US, 44131 Parsippany, NJ, US, 07054-2172 Bethlehem, PA, US, 18018-5717 Arlington, VA, US, 22209-2323 Princeton, NJ, US, 08540

Langan provides expert land development engineering and environmental consulting services for major developers, renewable energy producers, energy companies, corporations, healthcare systems, colleges/universities, and large infrastructure programs throughout the U.S. and around the world. Our employees collaborate seamlessly among 30+ offices and gain valuable hands-on experience that fosters career growth. Langan culture is entrepreneurial from advancing innovative technical solutions, to participating in robust training and knowledge sharing, to making progressive change within the communities we live and work.


Consistently ranked among the top ten “Best Firms to Work For” and Engineering News-Record’s top 50 firms worldwide, Langan attracts and retains the best talent in the industry. Employees thrive at Langan, a firm that embraces and promotes diversity, equity and inclusion; prioritizes wellbeing, health and safety; encourages volunteerism and philanthropy; offers workplace flexibility, along with carbon neutral office spaces; and empowers individuals to contribute their skills and knowledge to make impactful contributions.

Job Summary

Langan is seeking a Senior Risk Assessor to join its collaborative team. This individual will serve a key function in expanding the technical expertise of the risk assessment team. In this role, you will have the opportunity to provide firm-wide human health risk assessment expertise, develop technical approaches, interact with regulatory agencies, and partner cross-functionally with top industry leaders.

Job Responsibilities

  • Perform data evaluation, exposure and toxicity assessment, and risk characterization for sites governed under state programs and USEPA, RCRA and CERCLA programs;
  • Write technical reports summarizing risk assessment procedures and results;
  • Collaborate with various groups within the company to direct and develop report deliverables;
  • Perform statistical evaluations, including derivation of EPCs, BTVs, hypothesis and outlier testing;
  • Perform fate and transport modeling;
  • Advocate technical positions on behalf of the client;
  • Review and interpret toxicity information, regulatory guidance documents, and associated regulations; and
  • Perform other duties as requested.


  • Bachelor’s degree in public health, toxicology, chemistry or other related scientific field;
  • 8+ years of professional experience within an environmental consulting firm;
  • Experience working with RWQCB, DTSC and USEPA a plus;
  • Working knowledge of Microsoft Excel and statistical programs such as ProUCL;
  • Ability to prioritize and work within tight schedules;
  • High initiative, superior interpersonal skills, and ability to work autonomously and to multitask;
  • Excellent written and verbal communication skills;
  • Strong attention to detail with excellent analytical and judgment capabilities;
  • Ability to effectively work in a team environment; and
  • Possess reliable transportation for client meetings and job site visits and a valid driver’s license in good standing.

Langan provides a rich array of programs and benefits to help its employees advance their careers and enhance the quality of their lives. Our comprehensive compensation package includes: full-time employment company paid medical, dental, and vision coverage; life insurance, short- and long-term disability insurance, and paid pregnancy disability leave; 401(k)/Roth with company match; paid time off including parental and military leave; employee referral and professional license bonuses; and educational reimbursement.


Langan offers employee resource groups; flexible work schedules; extensive training; wellness programs; buddy and mentoring programs; and much more!


Langan is an affirmative action / equal opportunity employer committed to building a team that represents and values diverse backgrounds. Langan promotes a positive work environment of inclusion, where we respect each other’s differences and recognize that a diverse, equitable and inclusive environment is a key to our success.