• Provide word processing support and document formatting support to project staff. • Help maintain the project website and portal to ensure accuracy and timeliness of information, organization, usefulness, and consistency throughout the ACTG member website. • Upload draft and final protocols, reports, announcements, communications, and other documents to the project member website and internal DLH intranet. • Edit and post recordings and videos to the project member website. • Monitor project communications mailbox and distribute messages promptly and correctly to appropriate recipients. • Coordinate the preparation of the protocol summaries posted on the project public website. • Collate and format extensive session-specific agendas for project network meetings and retreats and assist with other meeting agendas, presentations, and materials as needed. • Monitor ClinicalTrials.gov to ensure that all applicable new protocols are posted on the website. • Support registration of new non-IND protocols and updating of existing non-IND protocols on ClinicalTrials.gov. • Provide backup and/or supplemental support for other task areas as needed. • Travel to in-person meetings (up to 5%). • May be assigned additional duties as required.

• Lead end-to-end drug substance process development and manufacturing for small molecule APIs from synthetic route assessment and impurity control through scale-up, technology transfer, and commercial manufacturing readiness at CDMOs. • Serve as the primary technical interface with drug substance CDMOs spanning partner selection, day-to-day oversight, troubleshooting, PAI preparation and performance management; ensure drug substance supply continuity, including second source qualification and starting material supply risk strategy, in support of clinical and commercial manufacturing. • Lead RSM designation, ICH Q11 assessments, impurity fate and purge strategies and ICH M7 mutagenic impurity risk assessments; establish CQAs, CPPs, and ICH Q6A-aligned control strategies. • Lead drug substance process validation from PPQ protocol development through batch execution and CPP/CQA verification; align PPQ timelines and batch disposition with drug product process validation and registration batch campaigns. • Author, review, and approve drug substance CMC sections for regulatory submissions (VMF, INAD/NADA); represent drug substance CMC in agency interactions and ensure a technically integrated and consistent regulatory package. • Partner with drug product development to translate drug substance CQAs into formulation design, excipient selection, container closure strategy and final dosage form decisions. • Partner with analytical development to define method development, qualification, and validation strategy for drug substance release and stability testing. • Partner with Quality to align drug substance specifications, batch disposition, and GMP compliance across CDMOs, and to support inspection and regulatory submission readiness. • Manage drug substance post-approval change control strategy for manufacturing changes at CDMOs.

Job Title: Environmental Scientist and Coastal and Upland Ecologist Location: - San Antonio, Texas - Austin, Texas - Corpus Christi, Texas - Houston, Texas Work Arrangement: - Hybrid (Austin, Texas, or San Antonio, Texas) - Remote (Houston, Texas, or Corpus Christi, Texas) Employment Type: Full-time (40 hours per week) Travel: Up to 30% (occasional overnight travel) Job Description: The Opportunity: Tetra Tech is adding an Environmental Scientist / Coastal & Upland Ecologist to our Central South team based in Texas. This position will support a wide variety of challenging and complex water resources, coastal resilience, ecological restoration, environmental compliance, and natural resources projects throughout Texas, New Mexico, and the broader Southwest. The ideal candidate will bring a background in coastal, marine, estuarine, wetland, riparian, or upland ecology, with the ability to support both field-based biological assessments and technical analyses for environmental planning, permitting, restoration, and watershed projects. This role is well suited for a biologist, ecologist, or environmental scientist who is comfortable working across coastal and upland environments, including Texas Gulf Coast systems, inland watersheds, riparian corridors, wetlands, grasslands, shrublands, arid landscapes, and project sites throughout Texas and New Mexico. Why Tetra Tech: At Tetra Tech, we are Leading with Science to solve the world's most complex challenges. Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world. For 60 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world. Your Impact: Join Tetra Tech to make a real difference. Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world. Discover your full potential - join us to advance your career while leaving a lasting legacy. Position Summary: We are seeking an Environmental Scientist / Coastal & Upland Ecologist with experience in biological field assessments, GIS mapping, environmental permitting, and technical reporting. The ideal candidate will have strong ecological training and applied consulting skills, with experience or interest in both: - Coastal, marine, estuarine, and wetland systems, particularly along the Texas Gulf Coast; and - Upland, riparian, arid, and semi-arid systems in Texas, New Mexico, and the broader Southwest. This position will support multidisciplinary teams of biologists, ecologists, engineers, hydrologists, modelers, planners, and regulatory specialists. Work may include field surveys, habitat assessments, wetland delineations, threatened and endangered species evaluations, environmental compliance documentation, GIS analysis, restoration planning, watershed studies, and synthesis of ecological data into actionable recommendations for clients. The role may also involve spatial and temporal data processing, ecological modeling, and interpretation of environmental datasets, but the primary emphasis is on applied ecology, biology, environmental assessment, and project support. Essential Job Functions: The following duties are essential to this role. Reasonable accommodation will be provided to enable individuals with disabilities to perform these functions. - Conduct field surveys to inventory and assess vegetation, wildlife, wetlands, riparian areas, upland habitats, and coastal or estuarine systems. - Perform or support wetland delineations, habitat assessments, threatened and endangered species evaluations, and biological resource surveys using applicable federal and state methods. - Support coastal, marine, and estuarine projects along the Texas Gulf Coast, including assessments of marshes, tidal flats, seagrass beds, oyster reefs, dunes, beaches, bay systems, coastal prairie, and other sensitive ecological resources. - Support upland, riparian, arid, semi-arid, grassland, shrubland, and desert environmental projects in Texas, New Mexico, and the broader Southwest. - Assist with environmental permitting and compliance documentation, including Clean Water Act Sections 404 and 401, NEPA, ESA, biological assessments, mitigation plans, monitoring plans, and related environmental review documents. - Conduct GIS-based mapping and spatial analysis to support biological surveys, environmental constraints analyses, impact assessments, restoration planning, permitting, and technical reports. - Compile, process, QA/QC, and interpret environmental datasets from field surveys, public databases, agency sources, remote sensing products, monitoring programs, and project-specific studies. - Prepare technical reports, wetland delineation reports, biological assessments, permit applications, monitoring reports, memoranda, maps, figures, visualizations, and client-ready presentations. - Support watershed planning, stream and river restoration, coastal resilience, ecological restoration, nature-based solutions, and environmental mitigation projects. - Coordinate with multidisciplinary teams, including engineers, hydrologists, planners, modelers, regulators, and other environmental specialists. - Participate in client meetings and project discussions as a technical team member, and support proposal development, scopes of work, technical approaches, and cost estimates as appropriate. Required Qualifications: - Bachelor's degree in Ecology, Biology, Environmental Science, Marine Science, Coastal Ecology, Natural Resources, or a related field. - 1-5 years of professional experience in environmental consulting, ecological fieldwork, biological assessment, natural resources management, environmental compliance, restoration, or related work. - Experience preparing or contributing to technical reports, environmental documentation, biological assessments, wetland reports, permit applications, or monitoring plans. - Proficient in ArcGIS or similar geospatial software for spatial analysis and mapping. - Ability to produce clear maps, figures, visualizations, and written summaries of field observations, environmental data, and technical analyses. - Willingness to support proposal development, scopes of work, and client coordination as appropriate. - Strong written and verbal communication skills for technical reports and client meetings. - Ability to work independently and as part of a team, including coordination with clients, agencies, and internal project teams as appropriate. Preferred Qualifications: - Master's degree or PhD in Ecology, Biology, Environmental Science, Coastal Ecology, Marine Science, Natural Resources, or a related field. - Experience with Texas coastal systems, Gulf Coast ecology, estuarine habitats, coastal restoration, or coastal resilience projects. - Experience with upland, riparian, grassland, shrubland, desert, or arid/semi-arid ecosystems in Texas, New Mexico, or the broader Southwest. - Experience conducting or supporting wetland delineations, biological surveys, habitat assessments, mitigation planning, restoration monitoring, or construction-phase environmental compliance. - Experience preparing or supporting Clean Water Act Sections 404/401 permit applications, NEPA documentation, ESA documentation, biological assessments, environmental assessments, or related regulatory submittals. - Experience with R, Python, or similar tools for ecological data analysis, data visualization, habitat suitability modeling, species distribution modeling, water quality analysis, or reproducible workflows. - Familiarity with coastal, estuarine, wetland, riparian, stream, or upland restoration planning and monitoring. - Experience managing environmental or geospatial datasets, metadata, QA/QC procedures, or data provenance. - Consulting experience or experience coordinating with clients, agencies, contractors, or multidisciplinary project teams. Physical Requirements: - Ability to travel for client and business development meetings as needed. Travel is estimated to be up to 30% yearly (occasional overnight travel). - Ability to perform fieldwork in rugged conditions for extended periods including walking, standing, bending, and kneeling. - Ability to work outdoors in a range of weather conditions (heat, rain, wind, cold) during fieldwork. - Ability to lift and carry materials/equipment up to 50 pounds. - Ability to sit at a workstation and use a computer for extended periods of time (up to 8 hours/day). Additional hours may be required based on project needs. - Manual dexterity to use a computer mouse, keyboard, and other tools. - Ability to communicate effectively in-person and via electronic means. Additional Information - For this role, we are open to hybrid work schedules in our Austin, TX or San Antonio, TX offices, or remote work schedules in Houston, TX or Corpus Christi, TX. - This position is scheduled for full-time work (40 hours/week) with a typical schedule of 8:00am to 5:00pm Monday to Friday. Additional hours may be required based on project needs. Life at Tetra Tech: The perks of working at Tetra Tech include: - Comprehensive and market-competitive benefits. - Merit-based financial rewards. - Flexibility and company-wide commitment to work/life balance. - Collaborative team atmosphere that values the contributions of all employees. - Learning and development opportunities for ongoing professional growth. About Tetra Tech: Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide. With 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition. Tetra Tech is proud to be an Equal Opportunity Employer. All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sex, marital or familial status, status as a protected veteran, or any other characteristic protected by law. Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans.

Role Description Parsons is looking for a highly experienced Principal Research Scientist to join our team! In this role you will get to work with other scientists and engineers to research and develop radiation transport models. What You'll Be Doing: - Work with a team of scientists and engineers to improve and add new capabilities to atmospheric radiative transfer model for an advanced multi-physics model - Document and present work to team members and others in the modeling community - Keep current with new developments in numerical methods and advances in the field of radiative transfer and remote sensing Qualifications - 20+ years of experience in scientific modeling and analysis - Extensive research experience in atmospheric radiative transfer (thermal/optical), including peer-reviewed publications - Expert knowledge of Monte Carlo atmospheric scattering models - Ability to work independently and also work well with others in a team environment - Excellent verbal and written communication skills - Ph.D. in engineering or scientific discipline Requirements - An active Secret security clearance is required for this position. Desired Skills - Experience coding in Fortran (both legacy and modern) - Experience mentoring other scientists/engineers Salary Range $60.14 - $108.27 Company Description This position is part of our Federal Solutions team. The Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation's most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now.