North Stone is seeking an Agile Full Stack Engineer to support the design, development, and integration of enterprise applications. The Agile Full Stack Engineer will help ensure system enhancements follow sound systems engineering practices while supporting secure software development and reviewing code quality prior to deployment. Responsibilities - Design, develop, and maintain full stack application components. - Apply systems engineering principles to ensure design changes align with architecture requirements. - Evaluate the technical implications of cybersecurity findings and vulnerabilities. - Participate in code reviews and validate code prior to merge into production branches. - Collaborate with developers, QA engineers, and DevSecOps teams to deliver secure software. - Support development of secure and scalable application architecture. - Assist in debugging, troubleshooting, and performance optimization of applications. - Contribute to Agile sprint planning and development activities. - Maintain documentation for system architecture and design decisions. - Support continuous improvement of secure development practices. - Performs other related duties as assigned. Qualifications - Active DoD Secret Clearance. - Ability to obtain and maintain Privileged and SIPR access. - Bachelor’s degree in Computer Science, Software Engineering, or related field. - 4+ years of experience in full stack application development. - Experience with modern programming languages and web technologies. - Experience working within Agile development environments. - Knowledge of secure coding and cybersecurity best practices. Preferred Qualifications - Experience supporting DoD or USAF Cloud One cloud environments. - Experience with DevSecOps pipelines and CI/CD tools. - Experience reviewing static code analysis results and vulnerability reports. - Familiarity with cloud-native application environments. About Us Diné Development Corporation (DDC) is a Navajo Nation owned family of companies that provides government agencies and commercial organizations with high‑quality IT, professional, environmental, and research and development services. DDC is dedicated to empowering the Navajo Nation and communities we serve. Benefits Eligible full‑time employees receive a comprehensive benefits package, including medical, dental, vision, life and disability coverage, retirement savings with company match, paid time off, voluntary supplemental benefits, and access to an employee assistance program. The package also includes educational assistance, with tuition reimbursement. EEO Statement This contractor and subcontractor shall abide by the requirements of 41 CFR 60‑1.4(a), 60‑300.5(a) and 60‑741.5(a). These regulations prohibit discrimination against qualified individuals based on their status as protected veterans or individuals with disabilities, and prohibit discrimination against all individuals based on their race, color, religion, sex, sexual orientation, gender identity, national origin, or for inquiring about, discussing, or disclosing information about compensation, or any other basis prohibited by law. We participate in E‑Verify.

Title: Industrial Hygienist Location: Remote (United States) Department: Engineering Job Description: When answers matter most, Keystone Experts & Engineers deliver. Keystone specializes in forensic engineering and investigative services for commercial and residential structures, vehicles, and products. Our multi-disciplinary team includes highly experienced engineers, architects, fire investigators, contractors, and industry experts strategically located across the country to serve a national client base. Keystone provides streamlined, fact-based forensic consulting services designed to meet our clients’ needs with clarity, accuracy, and timeliness. Our reports are tailored to client specifications and backed by expert analysis, ensuring clear, defensible conclusions and industry-leading turnaround times. The Keystone Way is more than a process: it’s our commitment to excellence, innovation, integrity, honesty, accuracy, timeliness, and accountability. These values guide every project we undertake. By combining top-tier expertise, open communication, and dependable service, we go beyond industry standards to deliver results our clients can trust. About the role Keystone Experts + Engineers is seeking experienced environmental health and safety professionals to join our team as Industrial Hygienists. This role is designed for detail-oriented experts with a background in environmental science, public health, or hazardous materials management who are ready to serve as critical technical resources for our clients. As an Industrial Hygienist, you will play a vital role by conducting comprehensive site investigations and environmental sampling. You will perform a variety of assessments and sample collection, such as hazardous materials assessments lead, asbestos, etc.), perform moisture mapping and microbial assessments, air quality investigations and assessments, and smoke damage assessments. This is a fully remote, part-time, 1099 contracted position. What you'll do - Driving to client sites around your specific location. - Performing commercial and residential inspections ranging from short duration (1-2 hours) projects to multi-hour projects. Most jobs are completed in less than a day. - Delivering samples directly to a local laboratory or via FedEx. - Updating/uploading project data after the job and at the end of the workday. - Occasionally inspecting inside crawlspaces, basements, and attics. - Communicating with clients. Qualifications - Qualified applicants must hold the appropriate certifications/licenses to perform the following: - Asbestos inspections - Lead Paint inspections - Mold Inspections · Minimum of 1-3 years prior building sciences and industrial hygiene experience

• Lead the web crawler development team, guiding best practices and performing code reviews; • Define priorities for improvements and strategies for preventive and corrective maintenance; • Continuously evaluate the architecture of crawlers and pipelines (Docker/Airflow), proposing optimizations; • Define and track operational and performance metrics (success rate, average capture time, stability, etc.); • Research and validate new tools and frameworks that improve crawler efficiency and resilience; • Act directly on critical production incidents, network blocks, or changes to distributor pages; • Document processes, standards, and best practices for the area; • Review and approve team code.

• Design and build GTM systems: data enrichment pipelines, lead scoring models, routing logic, signal-based workflows. • Find and connect data sources: discover new APIs, databases, and enrichment providers that give our clients an information edge. • Architect CRM and automation infrastructure: HubSpot, Salesforce, n8n, Clay whatever the client needs. • Build AI-powered workflows: use LLMs (Claude, GPT) and AI agents to automate research, personalization, qualification, and analysis at scale. • Work closely with clients: run feedback loops, present your work, and translate messy business problems into clean, repeatable systems. • Push the frontier: R&D is part of the job. Test new tools, new techniques, new approaches. Share what you learn with the team.