Lead Principal Engineer Applications Infineon Technologies AGLead Principal Engineer ApplicationsMAAs a Lead Principal Engineer Applications in our Customer Collaboration and Technical Marketing team, you work hand-in-hand with our customers, enabling them to transform our products into cutting-edge designs, all while building longlasting partnerships that thrive on success. BSEE or MSEE preferred with hands-on experience in high-frequency,high-current, high-density DC/DC designs including extensive lab skills for testing and debugging switch-mode power supplies.
Principal Systems Engineer Onto Innovation IncPrincipal Systems EngineerWilmington, MAOnto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: 3D metrology spanning the chip from nanometer-scale transistors to micron-level die-interconnects; macro defect inspection of wafers and packages; metal interconnect composition; factory analytics; and lithography for advanced semiconductor packaging. We are seeking a Principal Systems Engineer to provide technical leadership in the advancement of the existing platforms and the introduction of new complex automated optical inspection and metrology systems for the semiconductor industry.
Principal Thermal Mechanical Engineer FlexPrincipal Thermal Mechanical EngineerLittleton, MA$153,500–$211,000 / yearWhat a typical day looks like: Lead the initial design, analysis, and optimization of complex fluid systems from concept initial CAD to final detailed CAD and drawing for liquid cooling, including cold plates, pumps, fluids, tubing, and heat exchangers, for the latest computer processing chipsets. The Principal Mechanical Engineer will provide technical leadership, mentorship, and hands-on expertise in mechanical design, fluid dynamics, and heat transfer but also work closely with customers in communicating the art of the possible with JetCool technology and building a strong customer relationship on a technical level.
Principal Noise Consultant AcentechPrincipal Noise ConsultantCambridge, MA$115,000–$145,000 / yearAcentech, a multidisciplinary design consulting firm specializing in acoustics, vibration, audiovisual systems, IT and security system design seeks to hire a senior- to principal-level consultant to work with our Noise and Vibration team. We foster a collaborative environment of diverse talent, and encourage people of color, lesbian, gay, bisexual, transgender, queer and non-binary people, neurodivergent, veterans, parents, and individuals with disabilities to apply.
Principal Accountant CloudZeroPrincipal AccountantBoston, MassachusettsThe ideal candidate is a proactive problem-solver who enjoys wearing multiple hats, thrives on accuracy, and has a passion for continuous learning and process improvement - particularly with Finance Leadership being one of CloudZero’s primary buyers. Self-starter with a strong work ethic, eagerness to learn, and willingness to take on various responsibilitiesComfortable learning and working in new technology platforms (we use Campfire, Ramp, and other modern tools).
Principal Scientist, Lab Head, Integrative Neuroscience SanofiPrincipal Scientist, Lab Head, Integrative NeuroscienceCambridge, MA$122.25–$176.58 / hourBut progress doesn't happen without people - people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. Collaborate effectively within matrixed, dynamic, and cross-functional teams across the Neurology therapeutic area, platform groups, and external partners.
Principal Account Executive Rocket SoftwarePrincipal Account ExecutiveBoston, MARemote$160,650–$202,300 / yearWe help extend the value of these assets, enabling our customers to embrace the potential of cloud and mobile computing, advanced analytics, and the innovations of tomorrow. + Demonstrated history as a consistent top performer selling software solutions to senior executives with quotas in excess of 3M, selling large transactions.
NewPrincipal Specialist Sales Engineer, Zero Trust Branch - Majors, East Zscaler IncPrincipal Specialist Sales Engineer, Zero Trust Branch - Majors, EastBoston, MARemote$175,875–$251,250 / yearThe Speciality Sales team is a global group of professionals who are passionate about delighting our customers, nurturing trusted partnerships, and sharing their expertise to drive a secure, cloud-enabled digital future and further cement our position as the world leader in cloud security. Sales, Customer Success, Sales Enablement, Solution Architects, Business Development, Transformation, and Technology Partnerships all work together to demonstrate the power and agility of Zscaler cloud transformation to the world, and we are looking for your expertise to elevate our Exposure Management team.
Principal Scientist SanofiPrincipal ScientistWaltham, MA$122.25–$176.58 / hourThe Genomic Medicine Unit (GMU) CMC group at Sanofi is dedicated to the establishment of best-in-class manufacturing platforms to support development of life-changing advanced cell and gene therapy products, including recombinant AAV vectors, lentiviral vectors and cell therapy products. Main responsibilities: Lead scale-up activities from bench scale to pilot scale (200L-2000L), applying engineering principles (mixing, mass transfer, shear stress, dissolved oxygen control) to ensure process comparability at large scale.
NewPrincipal Scientist, Translational Science Immunology CSL Behring LLCPrincipal Scientist, Translational Science ImmunologyWaltham, MA$145,000–$180,000 / year4 Collaborate with clinical researchers/clinical development team (lead clinicians, clinical pharmacology, clinical biomarkers) to provide pre-clinical studies to support indication selection and biomarker strategy, including writing project proposals, research plans, human ethics applications and research agreements. 2 Design appropriate PD response/biomarker strategies and assays to support non-GLP/GLP toxicology studies and first in human clinical studies/early clinical studies, including writing Biomarker Strategy Documents and leading Biomarker Expert Teams.
NewPrincipal Specialist Sales Engineer, Zero Trust Branch - Healthcare Zscaler IncPrincipal Specialist Sales Engineer, Zero Trust Branch - HealthcareMARemote$175,875–$251,250 / yearThe Speciality Sales team is a global group of professionals who are passionate about delighting our customers, nurturing trusted partnerships, and sharing their expertise to drive a secure, cloud-enabled digital future and further cement our position as the world leader in cloud security. Sales, Customer Success, Sales Enablement, Solution Architects, Business Development, Transformation, and Technology Partnerships all work together to demonstrate the power and agility of Zscaler cloud transformation to the world, and we are looking for your expertise to elevate our Exposure Management team.
Principal Scientist, Systems And Disease Biology SanofiPrincipal Scientist, Systems And Disease BiologyCambridge, MA$122.25–$176.58 / hourD. in systems biology, computational biology, biostatistics, or related quantitative field with proven experience in a relevant disease area (Immunology, Neurology or Oncology) OR PhD in biological sciences, biomedical sciences, immunology, neuroscience, oncology or in a related disease area and proven advanced track record of data analytics, ML/AI, or computational biology. Leading projects involving internal experiment design and data analytics as well as outsourcing of established workflows and/or complex follow-up mechanistic assays (organoid, CRISPR, proteomics).
Principal Scientist, Computational Protein Design ModernaTXPrincipal Scientist, Computational Protein DesignCambridge, MassachusettsWe are proud to have been recognized as a Science Magazine Top Biopharma Employer, a Fast Company Best Workplace for Innovators, and a Great Place to Work in the U.S. If you want to make a difference and join a team that is changing the future of medicine, we invite you to visit modernatx.com/careers to learn more about our current opportunities. This individual will work in close partnership with structural biology, directed evolution, immunology, translational science, and program teams to advance platform innovation and therapeutic programs across Moderna’s Research and Early Development portfolio.
Principal AI/ML Researcher WhoopPrincipal AI/ML ResearcherBoston, MassachusettsDeep expertise in modern deep learning (transformers, state space models), multimodal training, self-supervised and representation learning, RL-based post-training (PPO/DPO/GRPO), and large-scale distributed training (data, model, and context parallelism). At WHOOP, we view total compensation as the combination of base salary, equity, and benefits, with equity serving as a key differentiator that aligns our employees with the long-term success of the company and allows every member of our corporate team to own part of WHOOP and share in the company’s long-term growth and success.
Principal Scientist, Protein Design ModernaTXPrincipal Scientist, Protein DesignCambridge, MassachusettsThis role will lead the design, execution, and continuous advancement of high-throughput mammalian cell–based screening platforms that interrogate broadly applicable design principles for glycoprotein antigens, enabling antigen optimization, improved expression and durability across multiple programs, and rapid maturation of computationally designed candidates. The candidate in this position will work closely with and report to the Senior Director, Computational Design and In Vitro Selection, and will also work closely with the VP, Protein Design, as well as other members of Research, to advance novel candidates to the clinic, drive exploratory trials to inform the generation of improved vaccine antigens and explore new concepts for mRNA medicines.
Principal Software Engineer, Platform Engineering ModernaTXPrincipal Software Engineer, Platform EngineeringCambridge, MassachusettsThis is a senior individual contributor role that combines deep technical execution with cross-functional technical leadership across developers ("Builders"), Cybersecurity, Architecture, AI platform teams, and broader teams to provide scalable, secure, and user-focused capabilities that make the right path the easiest path for Moderna’s engineering teams. We are proud to have been recognized as a Science Magazine Top Biopharma Employer, a Fast Company Best Workplace for Innovators, and a Great Place to Work in the U.S. If you want to make a difference and join a team that is changing the future of medicine, we invite you to visit modernatx.com/careers to learn more about our current opportunities.
Principal Manufacturing Test Engineer Boston Dynamics, inc.Principal Manufacturing Test EngineerWaltham, MA$154,310.03–$192,887.54 / yearWith a focus on printed circuit board assemblies (PCBAs), you will interact with the product design, software, manufacturing, test, and quality engineering teams to ensure the appropriate test coverage and product performance for the electromechanical assemblies being designed for our robotics systems. You will document, design, and deploy test equipment, software, and procedures for supplier production testing, in-house production testing, and system level testing.
Senior/Principal Scientist Cell Based Potency Assay 3316 Takeda Development Center AmericasSenior/Principal Scientist Cell Based Potency AssayLexington, MassachusettsD. in cell biology, molecular biology, immunology, biochemistry, bioengineering, pharmaceutical sciences, statistics, biostatistics, or a related discipline with 3+ years of relevant experience for Senior Scientist or 7+ years for Principal Scientist; MS with 9+ years for Senior Scientist or 13+ years for Principal Scientist; or BS with 11+ years for Senior Scientist or 15+ years for Principal Scientist. Plan and coordinate work with departmental, cross-functional, and external stakeholders, including Process Development, Quality Control, contract testing laboratories, Analytical Sciences, Quality Assurance, Regulatory, and other Analytical Development teams.
NewPrincipal Research Scientist ChewyPrincipal Research ScientistWoburn, MassachusettsDefine and lead Chewy’s scientific roadmap for embodied AI and humanoid robot learning, with emphasis on reinforcement learning, imitation learning, VLA-style policy learning, and modern control approaches for real-world robotic systems. You will partner closely with roboticists, controls engineers, ML engineers, software engineers, and operations stakeholders to develop systems that can perceive, reason, learn, and act safely and robustly in the physical world.
Principal Data Scientist Global Payments IncPrincipal Data ScientistMARemote$165,300–$249,675 / yearIn this role, you will collaborate closely with ML software engineers, product managers, and other product delivery teams to build ML models and data-driven algorithms into robust, scalable, and production-ready products that optimize the end-to-end payment process. You will act as payment subject matter expert and apply strong system and product thinking to create new product concepts, influence and build development roadmaps, design intelligent decision engines, drive cross functional initiatives and mentor senior DS/ML engineers.