Principal Engineer

Join our dynamic team at Jobs for Humanity as a Principal Engineer, where you will play a pivotal role in shaping innovative solutions that empower communities and enhance accessibility for all. You will collaborate with cross-functional teams to design, develop, and implement robust systems that meet the diverse needs of our users.

About Apex Companies Apex Companies is a consulting and engineering firm recognized for rapid growth and strong client relationships. With a history of record sales, project excellence awards, and strategic expansion, Apex continues to build its reputation as a leader in engineering and environmental consulting. The company invests in employee development and values an entrepreneurial approach. Role Overview: Principal Environmental Engineer This Principal Environmental Engineer position is based in Pittsburgh, PA. The role centers on building and leading a new branch office, with support from division and regional teams. The engineer will play a key part in both business development and project delivery, shaping the growth of Apex in the region. Key Responsibilities Establish, manage, and expand a new branch office, working closely with division and regional leadership. Recruit, develop, and supervise a technical team to ensure smooth office operations and successful project outcomes. Create and implement strategies to attract new clients, using existing relationships and identifying new business opportunities for design projects from start to finish. Lead project management for Site Assessments & Remediation, Emergency Response, Natural Resources, EHS compliance, Permitting, Planning, and Management or Reporting Assurance Services. Mentor junior engineers and technical staff, supporting their growth and development. Serve as the main contact for clients, contractors, and stakeholders, promoting clear communication and effective problem solving. Participate in technical organizations both within and outside the company.

Join Wabtec Corporation as a Principal Engineer in Software Systems, where your expertise will drive innovation in our engineering teams. You will be at the forefront of developing advanced software solutions that enhance our products and services.

Mission Summary: Join our innovative team as a Staff/Principal Engineer specializing in Perception Capabilities. In this pivotal role, you will leverage advanced computer vision and deep learning technologies to develop state-of-the-art software solutions. Your extensive experience will encompass critical domains such as detection, classification, segmentation, and tracking, alongside essential functions like data engines, labeling policies, training pipelines, model optimization, simulation, and testing. Your commitment to excellence will drive substantial impact on our products, as you take initiative and ownership of outcomes. We are looking for someone eager to enhance the perception stack of self-driving vehicles. You will navigate unique challenges associated with safety-critical, open-world applications, ensuring rigorous engineering excellence and thorough evaluation. You will devise innovative solutions to complex issues, collaborating with interdisciplinary teams focused on capabilities to design, implement, and validate comprehensive solutions. What you’ll be doing: Lead the development and implementation of solutions that integrate perception components with downstream modules within our autonomy system. Analyze the performance of the perception subsystem, proactively identifying potential limitations regarding system-level capabilities. Document and lead cross-team efforts to resolve any identified hazards. Collaborate on innovative solutions to tackle “long tail” challenges, including synthetic data generation, advanced data mining, or utilizing language embeddings in onboard models. Depending on your expertise, you may also assist in optimizing and deploying models to vehicles, ensuring compliance with the constraints of our onboard hardware and functional requirements. Interface with systems and safety engineers, test engineers, and data analysts to ensure accurate requirements, test coverage, and performance metrics.

Motional is on the lookout for a highly skilled Principal Engineer to join our Planning team. In this pivotal role, you will be responsible for designing motion planning and control systems that ensure safe, efficient, and comfortable operations for our fleet in intricate environments. Your expertise in cutting-edge research, advanced algorithm development, and robust software engineering will be crucial in crafting safe and intuitive routes for autonomous vehicles. If you are passionate about autonomous driving and eager to tackle real-world challenges while making a meaningful impact in a dynamic field, we would love to hear from you.Key Responsibilities:Lead the R&D of innovative algorithms and subsystems for motion planning in autonomous driving, enhancing our Operational Design Domain through advanced search-based and geometry-based methods, with a focus on probabilistic decision-making.Coordinate cross-functional projects to create or improve existing interfaces aimed at solving complex challenges.Evaluate overall system performance, identifying areas for enhancement and devising technical strategies to rectify deficiencies.Guide multidisciplinary project teams to deliver holistic solutions while considering the broader context of the planning system.Architect and integrate complex motion planning and prediction algorithms, driving their evaluation and optimization for real-world applications.Develop a robust, scalable codebase that supports rapid experimentation, prototyping, and rigorous assessment of new motion planning methodologies.Facilitate technical collaboration across perception, prediction, trajectory optimization, tracking, and control components to ensure comprehensive system performance.Utilize your extensive software development and research expertise to mentor colleagues on best practices, fostering a culture of technical excellence.Provide guidance and mentorship to both junior and senior team members, promoting an environment centered on product-focused engineering, thorough research, and advanced development.

Role Overview Apex Companies LLC is seeking a Principal Engineer - Water/Wastewater for its Pittsburgh, PA office. This role centers on building and leading a new branch office, with a focus on water and wastewater engineering projects. Apex Companies is known for its growth in the engineering and environmental consulting sector and values both professional development and client service. What You Will Do Establish, manage, and grow a new branch office, working closely with division and regional teams. Recruit, develop, and lead a technical team to support office operations and project delivery. Shape and carry out strategies to win new business, maintain client relationships, and expand opportunities for design projects of all sizes. Direct project management for water and wastewater engineering efforts, including comprehensive sewer plans, engineering reports, and design of treatment plants, collection and distribution systems, water modeling, and pump stations. Mentor junior engineers and technical staff, promoting teamwork and knowledge sharing. Prepare engineering reports, construction drawings, specifications, and cost estimates. Serve as the main point of contact for clients, contractors, and stakeholders, ensuring clear communication and prompt issue resolution. Participate in technical organizations, both internal and external, to support ongoing professional growth.

Technical Lead Manager, Motion Planning Join our innovative Planning team at Motional, where you will leverage your expertise in robotics and software engineering to develop production-ready autonomous vehicle technology. As the Technical Lead Manager, you will guide a dedicated team focused on designing and implementing advanced motion planning software for autonomous vehicles. This role demands strong leadership in defining motion planning and control systems that ensure the safe, efficient, and comfortable operation of our fleet in complex environments. You will spearhead the creation of cutting-edge motion planning algorithms, collaborate with cross-functional teams (including Localization, Perception, Prediction, Controls, ML Products, and Systems Engineering), and mentor a talented group of engineers to deliver state-of-the-art solutions. If you are driven by a passion for autonomous driving and enjoy tackling challenging real-world problems, we are eager to connect with you.

Mission Overview: Join Motional as a Principal Engineer Team Lead, where you will spearhead a talented team dedicated to crafting and implementing advanced trajectory planning algorithms through numerical optimization for autonomous vehicles. Your leadership will play a critical role in refining the motion planning and control systems that empower our fleet to navigate intricate environments with safety, efficiency, and comfort. As a pivotal figure in our organization, you will oversee the evolution and continual enhancement of state-of-the-art trajectory generation algorithms, engaging in collaborative efforts with diverse teams including Planning, Perception, Prediction, Localization, Machine Learning Products, and Systems Engineering. Additionally, you will mentor a skilled group of engineers, guiding them to deliver innovative and high-quality solutions. If you are enthusiastic about the future of autonomous driving, eager to contribute to our commercial launch this year, and thrive on tackling complex real-world challenges, we invite you to apply! Your Responsibilities: Lead and expand a high-impact trajectory planning team, establishing its technical vision, execution strategy, and long-term role within the Motion organization. Ensure readiness for commercial launch by enhancing on-road driving behaviors (safety, comfort, and assertiveness) across the fleet through feature expansion, ongoing performance improvement, and cutting-edge innovations. Implement a rigorous, metrics-driven framework to assess and enhance on-road performance, championing the use of existing training and evaluation pipelines for scalable, production-ready solutions. Oversee the computational efficiency and real-time performance of trajectory generation algorithms, ensuring adherence to latency budgets. Lead prompt triage and root-cause analysis of fleet incidents, translating real-world edge cases into immediate algorithmic updates and validation datasets. Manage the successful implementation of complex, multi-team projects, ensuring technical consistency from design through deployment while upholding high standards for testing and validation to meet safety benchmarks for our commercial launch. Collaborate with peer leads to provide technical direction, making impactful decisions on architectural pathways, strategic investment, tactical execution, and technical debt alleviation. Ensure technical excellence through thorough design and code reviews while fostering the professional development and mentorship of your engineering team. Set and pursue ambitious objectives that encourage the team to deliver industry-leading trajectory solutions.

Mission Overview:We are on the lookout for an accomplished and innovative Principal Engineer Tech Lead Manager to spearhead our new Machine Learning (ML) Acceleration team. In this key position, you will be responsible for crafting the strategy, development, and implementation of initiatives designed to significantly enhance the speed of ML model training. The ultimate objective is to substantially shorten the development cycle for new ML models and facilitate swift hot-patching for issues encountered in our autonomous vehicle services.As a hands-on leader, you will merge extensive technical knowledge in ML systems and performance enhancement with robust leadership and personnel management skills. You will have the opportunity to recruit, mentor, and cultivate a high-performing team of engineers, while promoting a culture that embraces innovation, collaboration, and ongoing improvement.Your Responsibilities:Team Leadership & Management:Assemble, lead, and manage a high-performing team of ML and infrastructure engineers focused on acceleration.Offer technical direction, mentorship, and career development pathways for team members.Encourage a collaborative and inclusive team atmosphere.Establish team objectives, priorities, and roadmaps that align with organizational goals.Technical Strategy & Execution:Articulate the technical vision and strategy for ML acceleration throughout the organization.Identify and assess cutting-edge technologies and methodologies to expedite ML training, including data pipeline optimization, large-scale distributed training, data loader optimization, hardware acceleration, and model optimization techniques.Design, develop, and deploy scalable and efficient ML acceleration solutions.Cross-functional Collaboration:Work closely with ML research, ML Training platform, and product teams to understand their requirements and seamlessly integrate acceleration solutions.Communicate intricate technical concepts and strategies to both technical and non-technical stakeholders.Serve as a technical authority and proponent for ML acceleration initiatives across the company.Impact & Measurement:Regularly assess and report on the effectiveness of acceleration initiatives.Persistently seek out further optimization and innovation opportunities.

About Us Join us in revolutionizing the supply chain! At Gather AI, we're not merely developing software; we're at the forefront of a new era of warehouse intelligence. Our innovative vision-powered platform harnesses autonomous drones and existing equipment to collect real-time data, fully digitizing workflows that have traditionally been manual and prone to errors. This advancement allows facilities to operate more intelligently, safely, and efficiently, ultimately transforming the concept of 'on-time, in full' delivery. If you're eager to contribute to groundbreaking technology and make a substantial impact on an essential industry, then Gather AI is your destination. We are leading the transformation in the swiftly advancing robotics sector and invite you to help us reshape the global supply chain, one intelligent warehouse at a time. About You As a Principal Systems Engineer at Gather AI, you will assume a pivotal role as a technical leader, steering the development and integration of state-of-the-art autonomous and passive sensing systems while bridging the divide between product vision, intricate system requirements, hardware implementation, and real-world performance.

About UsAurora Innovation is committed to advancing self-driving technology to create a safer, faster, and more accessible transportation ecosystem for everyone.The Aurora Driver is set to revolutionize mobility and logistics, ensuring a more efficient future for all.Join us at Aurora, where you will engage with complex challenges alongside a team of passionate and intelligent professionals. This is an opportunity to grow your expertise while contributing to groundbreaking advancements in the industry. For the latest updates from Aurora, explore aurora.tech or connect with us on LinkedIn.Aurora welcomes talented individuals from diverse backgrounds who are eager to help foster a transportation ecosystem that enhances road safety, optimizes logistics, and improves mobility for all. We are on the lookout for a Principal People Business Partner (PBP) to join our People Team. This role is ideal for someone who thrives in dynamic, high-growth environments and is eager to build robust people strategies. As a strategic ally to our executive leadership, you will play a key role in shaping people strategies and enhancing organizational effectiveness as we embark on our next growth phase. You will be a trusted advisor, facilitating the scaling of our vital functions and ensuring we develop a future-ready workforce.Key Responsibilities:Drive Business Results: Collaborate with senior leadership to align people strategies with business goals, delivering high-quality solutions that ensure the talent and environment needed to achieve critical outcomes.Enhance Leadership Effectiveness: Act as a coach and strategic advisor to senior leaders, aiding them in navigating complex changes and boosting team performance.Improve Organizational Effectiveness: Work directly with executive leaders to identify organizational challenges and design effective solutions.

Join Sonsoft Inc. as a Principal Consultant specializing in Salesforce solutions, where you will leverage your expertise to drive successful implementations and optimize business processes. You'll work closely with clients to understand their needs and provide tailored solutions that enhance their CRM capabilities. This is an exciting opportunity to make a significant impact in a growing organization.

Join Duolingo as the Principal Learning Scientist and lead our Efficacy Research initiatives. In this pivotal role, you will leverage your expertise in learning sciences and data analysis to evaluate and enhance the effectiveness of our educational products. You will collaborate with cross-functional teams to design studies that measure learning outcomes and provide actionable insights to drive improvements.

Join our dynamic team at teraswitch as an Infrastructure Engineer or Senior Infrastructure Engineer. We are seeking talented individuals who are passionate about building and maintaining robust infrastructure systems. In this role, you will be responsible for designing, implementing, and optimizing infrastructure solutions that support our innovative projects. As part of our team, you will collaborate closely with cross-functional teams to ensure our systems are scalable, secure, and highly available.

Join our dynamic team at dstaff as a Lead WESB Engineer, where you will play a crucial role in developing and optimizing web services for our clients. We are seeking a highly skilled engineer with a passion for technology and problem-solving. In this role, you'll lead projects that enhance system performance and improve user experience.

Join teraswitch as a Senior Infrastructure Engineer, specializing in Kubernetes and Platform Engineering. In this role, you will leverage your expertise to design, implement, and optimize scalable infrastructure solutions that drive innovation and efficiency.

Join Duolingo as a Senior Engineering Manager, where you will lead a talented team of engineers to innovate and enhance our language learning platform. Your leadership will drive the development of cutting-edge technologies that empower millions of learners worldwide. If you have a passion for education and technology, this is the perfect opportunity to make a significant impact.

About Gather AI Are you ready to revolutionize the future of supply chain management? At Gather AI, we are not just developing software; we are spearheading a transformative era in warehouse intelligence. Our innovative, vision-driven platform integrates autonomous drones with existing equipment to gather real-time data, effectively digitizing traditional workflows that have long been marked by manual errors. This advancement empowers facilities to operate with greater intelligence, safety, and efficiency, ultimately redefining the standards of 'on-time, in full' delivery. If you are eager to contribute to groundbreaking technology and make a meaningful impact in a crucial industry, Gather AI is the perfect place for you. Join us as we lead the transformation in the rapidly advancing robotics sector, reshaping the global supply chain, one intelligent warehouse at a time. About the Autonomy Team Our Autonomy team operates at the cutting edge of real-world robotics, designing and implementing systems that navigate, perceive, and act within complex and uncontrolled warehouse environments. The team encompasses areas such as drone autonomy, perception, and MHE Vision, working across various active product lines with live deployments at customer sites. With a small, experienced group, your contributions will be highly visible, and you will tackle the most challenging and impactful problems. About the Role Architectural Ownership: Integrate decisions across backend, frontend, platform, and infrastructure into a cohesive, enterprise-grade architecture. Excellence in Execution: Move beyond reactive problem-solving to predictable execution by addressing scalability and reliability challenges, safely upgrading critical infrastructure, and minimizing single-threaded dependencies. Setting Standards: Establish benchmarks for engineering technical hygiene by influencing testing strategies, validation guardrails, and system design considerations that directly enhance delivery speed and maintainability. System Evolution: Modernize and scale existing production systems using database-level strategies (like schema evolution and replication trade-offs) and platform primitives (such as orchestration and runtime constraints). Mentorship: Elevate the engineering organization by creating shared practices, aligning terminology, and mentoring senior talent across the team. First-Principles Thinking: Develop a comprehensive understanding of data systems, latency-sensitive services, and potential failure modes.

About Gather AI Are you ready to revolutionize the future of supply chain management? At Gather AI, we are not merely developing software; we are at the forefront of a transformative movement in warehouse intelligence. Our innovative, vision-powered platform harnesses autonomous drones and existing equipment to capture real-time data, digitizing workflows that have traditionally been manual and prone to errors. This advancement allows facilities to operate in a smarter, safer, and more efficient manner, ultimately redefining the standards for 'on-time, in full' delivery. If you're seeking a chance to contribute to groundbreaking technology and significantly impact a critical industry, Gather AI is your destination. We are spearheading the evolution of the robotics field, and we welcome you to join us in reshaping the global supply chain, one intelligent warehouse at a time. About the Team This position collaborates closely with a Senior Machine Learning Scientist and our Lead Machine Learning Infrastructure Engineer, alongside cross-functional partners in Cloud Engineering, Product, and Operations. The role encompasses both deep technical work and collaboration with teams that are closest to our customers. As a Principal-level individual contributor, you'll play a pivotal role in shaping our technical direction — influencing decisions rather than merely executing them. About the Role We are in search of a Principal Machine Learning Scientist to elevate the capabilities of our computer vision systems for warehouse inventory scanning. You will engage in the entire ML lifecycle — from research and model architecture to training, deployment, and production monitoring — while focusing on measurable enhancements in detection, segmentation, and OCR accuracy across our drone and MHE Vision products. This role is perfect for an experienced ML practitioner eager to have a principal-level impact on a core product, engage with various deployment targets (cloud, on-prem, embedded), and work with real-world data yielding tangible business outcomes. What You’ll Do Enhance core computer vision model performance (object detection, segmentation, OCR) for warehouse inventory scanning across drone and MHE Vision platforms. Oversee the full ML lifecycle from research and experiment design through production deployment and monitoring — employing rigorous ablation studies and state-of-the-art methodologies. Collaborate with the ML infrastructure team on optimizing and deploying models across cloud and edge inference targets (ONNX, TensorRT, quantization). Partner with Operations and Product teams to grasp customer needs and translate them into measurable ML improvements with significant business impact. Provide mentorship and guidance to junior team members.

Join Allen + Shariff Corporation, a leading international MEP engineering firm, dedicated to delivering exceptional consulting and design services across five locations in the United States and project management expertise in the Middle East. Our mission is to foster personal care and connection that empowers our clients, employees, and communities to thrive. We pride ourselves on cultivating a fun work environment, earning the distinction of a “Great Place to Work.” Our Pittsburgh office has also been recognized as a “Best Place to Work” by the Pittsburgh Business Times.We are currently seeking a skilled and motivated Electrical Engineer or Senior Designer to be part of our dynamic team. The selected candidate will independently manage multiple concurrent projects, both in the design and construction phases, and will be responsible for preparing comprehensive contract documents and specifications for sophisticated building systems. Key responsibilities include conducting advanced calculations, performing systems analysis, ensuring quality control of completed projects, and coordinating field/construction activities.Key ResponsibilitiesDesign and specify lighting, power, and fire alarm systems, including complete equipment selection, for projects of all sizes.Evaluate system options and assess existing systems where applicable.Oversee all facets of project document completion, collaborating with A+S and external clients.Deliver full design in compliance with applicable codes, utilizing AutoCAD and Revit based on architect preferences.Draft technical specifications.Provide comprehensive bid and construction phase support, including bid reviews, responding to RFIs, examining shop drawings, participating in project walk-throughs, and generating field observation reports.Possess in-depth knowledge of building electrical systems and serve as a technical expert and resource within the office.QualificationsBachelor’s degree in Electrical Engineering or Architectural Engineering with a focus on electrical systems.Professional Engineer (PE) license preferred.A minimum of 6 years of relevant experience if licensed as a PE; 10 years required without.Proficiency in AutoCAD and Revit is essential.