Senior / Principal Scientist in Structural Biology

About Serif Biomedicines, Inc. Serif Biomedicines, Inc. is a privately held biotechnology company in Cambridge, MA. The team is developing new approaches to gene therapy for diseases that current medical solutions cannot address. Serif Biomedicines was founded by Flagship Pioneering, known for launching over 100 innovative life sciences organizations focused on human health and sustainability. Role Overview The Senior Scientist, Molecular Biology will design and develop next-generation DNA constructs for programmable medicine. This position suits scientists experienced in synthetic biology, high-throughput cloning, and computational sequence engineering. The role centers on building scalable platforms for plasmid DNA design, construction, and optimization, using automation, algorithm-driven sequence design, and data-centric workflows. This scientist will report to the Director of Molecular Biology and may supervise a direct report. Collaboration with other scientists and group leaders across the R&D team is a key part of the job. What You Will Do Lead the design and construction of plasmid DNA constructs, including vector architecture, gene synthesis strategies, and high-efficiency cloning (such as Gibson, Golden Gate, and recombination-based methods). Advance automated and computational sequence design by applying advanced tools and pipelines for codon optimization, regulatory element tuning, and multi-parameter construct optimization. Establish and manage vendor relationships to support both internal and external capabilities, helping projects move forward efficiently and minimizing disruptions.

About Flagship Pioneering and FL122 FL122, a new venture launched by Flagship Pioneering in Cambridge, MA, is building genomic technologies to advance human health and assisted reproduction. Flagship Pioneering has founded more than 100 life sciences companies over the past 20 years, including Moderna, Generate Biomedicines, and Tessera Therapeutics. The team is focused on solutions for critical challenges in human health and sustainability. Role Summary: Scientist in Reproductive and Molecular Biology This Scientist position will help lay the experimental groundwork for FL122’s scientific platform. The role centers on developing and standardizing laboratory workflows involving human gamete handling and molecular characterization. Working as part of the early scientific team, this person will collaborate with senior scientists and company leadership to define technical standards and execute experimental strategies. What You Will Do Develop and refine laboratory workflows for human gamete handling and molecular analysis Work directly with sensitive human samples in an IVF or embryology lab setting Apply molecular biology techniques to support experimental objectives Collaborate with team members and leadership to set technical standards Contribute to the execution and planning of experimental strategies What We’re Looking For Strong background in reproductive biology and molecular biology Hands-on experience in IVF or embryology laboratory environments Proficiency with molecular biology techniques Attention to detail and comfort working with sensitive human samples Adaptability and willingness to work across disciplines Collaborative mindset suitable for an early-stage, startup setting

Role overview Eurofins Scientific seeks an Associate Scientist in Cambridge with a focus on molecular biology and protein purification. This role supports ongoing research projects and daily laboratory operations, working closely with experienced scientists in a well-equipped environment. Key responsibilities Perform experiments in molecular biology and protein purification Manage laboratory workflows to ensure accuracy and reliability Work collaboratively with team members on research projects Support initiatives that advance scientific knowledge Work environment The position is based in a modern laboratory with advanced equipment and a team of specialists. Daily work involves hands-on research and collaboration within a supportive scientific community.

Eurofins Scientific is seeking a Molecular Biology Analyst in Cambridge. This position centers on analyzing molecular data and conducting experiments to support ongoing scientific projects. Role overview This role involves hands-on laboratory work, including the analysis of molecular samples and the execution of experiments. The Molecular Biology Analyst will contribute to projects that support health and safety initiatives. Key responsibilities Analyze molecular data using established laboratory methods Perform experiments as part of project teams Support scientific efforts that advance health and safety Location This position is based in Cambridge.

Join the esteemed team at Harvard University as a Research Assistant I in the Department of Molecular and Cellular Biology. This full-time position offers an exciting opportunity to contribute to groundbreaking research in the sciences. You will assist in various research projects, working closely with senior researchers to gather and analyze data, prepare reports, and participate in laboratory activities.

About Serif Biomedicines, Inc. Serif Biomedicines, Inc. is a privately held biotechnology company based in Cambridge, MA. The team focuses on developing gene therapies for diseases that currently lack effective treatments. Founded by Flagship Pioneering, Serif is part of a network that has launched over 100 companies in the life sciences, including Moderna, Syros Pharmaceuticals, and Generate Biomedicines. Position Overview The Research Associate in Molecular Biology will contribute to the development of programmable medicines. This position suits a molecular virologist or biochemist with hands-on experience in nucleic acid production, characterization, and molecular cloning. Scientific rigor and a collaborative approach are essential. The role involves working closely with others to advance nucleic acid therapeutics in a setting that values curiosity and innovation. Main Responsibilities Plasmid Production: Design, carry out, and troubleshoot molecular cloning for inserts of various lengths and compositions. Ensure plasmid sequences meet specifications. Inventory Management: Organize storage of produced materials. Keep accurate electronic records of material details and storage locations. Enzymatic Reaction Optimization: Improve and troubleshoot enzymatic reactions to boost nucleic acid yield and purity. Nucleic Acid Production: Follow and refine protocols to produce high-quality DNA and RNA with different expression cassettes.

Join us as a Senior Scientist in Computational Biology at Flagship Pioneering, Inc. In this pivotal role, you will leverage your expertise to drive innovative research and development in computational biology, contributing to groundbreaking discoveries and advancements in the field.

Join our dynamic team as a Molecular Biology and Tissue Culture Lab Associate in Cambridge, MA. This is an exciting opportunity for individuals passionate about advancing scientific research and laboratory techniques. You will be involved in various laboratory processes, focusing on molecular biology and tissue culture methodologies.

Join AbbVie as a Senior Scientist I in the field of siRNA in vitro biology. In this role, you will leverage your extensive knowledge and skills in molecular biology to contribute to innovative research and development projects. Collaborate with a team of dedicated scientists to explore new therapeutic avenues and advance our understanding of RNA interference.

Join our team as a Biology Scientist, where you will engage in groundbreaking research and development in the field of biology. You will collaborate with a talented group of scientists and contribute to innovative projects that aim to advance our understanding of biological processes. This is an exciting opportunity to be part of a dynamic environment that fosters creativity and scientific inquiry.

GT Biosciences is on the cutting edge of biotechnology, developing Deliveromics, the world’s first AI-driven, high-throughput, multiplexed in vivo data engine designed to decode the complexities of drug delivery. Established by a team of MIT scientists and supported by elite investors, we are pioneering next-generation, non-viral, cell-type-specific delivery vehicles, achieving notable advancements in crossing the blood-brain barrier and targeting specific brain cell types. Our dedicated and fast-paced team is committed to revolutionizing routine in vivo cell reprogramming.We are seeking a passionate and skilled Spatial Biology Platform Scientist to join our Platform Development Team. In this pivotal role, you will leverage your extensive knowledge in spatial biology, nucleic acid sequencing, and assay development to enhance our Deliveromics platform. As an early member of our scientific team, your collaborative efforts across biology, chemistry, and engineering will be crucial in generating high-quality data and insights driving our innovations. This full-time, in-person position is based in Cambridge, MA.

Harvard University's Department of Molecular and Cellular Biology seeks a Staff Scientist to join its research team in Cambridge. This role centers on advancing scientific understanding in molecular biology through direct involvement in research projects. Role overview The Staff Scientist will work closely with faculty and fellow researchers, contributing to the design and execution of experiments. Responsibilities include developing research strategies, conducting laboratory work, and analyzing experimental data. Collaboration Collaboration is a key part of this position. The team values open communication and shared problem-solving as they pursue new discoveries in molecular and cellular biology. Impact This role supports scientific progress by helping to shape and carry out experiments that expand the field's knowledge base. The work performed will directly influence ongoing and future research directions within the department.

Our MissionAt Altos Labs, our mission is to rejuvenate cell health and resilience, aiming to reverse diseases, injuries, and the associated disabilities that arise throughout life.For further details, visit our website at altoslabs.com.Our ValuesWe embrace a singular value at Altos: Everyone Owns Achieving Our Inspiring Mission.Diversity at AltosWe hold a firm belief that diverse perspectives are crucial to scientific advancement and inquiry. At Altos, outstanding scientists and industry leaders collaborate from across the globe to further our shared mission. We prioritize creating a sense of belonging, ensuring that every employee feels valued for their unique contributions. We are collectively responsible for maintaining a diverse and inclusive workplace.Your Contributions to AltosIn the role of Senior or Principal Machine Learning Scientist, you will be instrumental in the development of generative AI/ML models for multi-modal, multiscale biology, spanning from virtual cells to agentic target assessment. We seek a hands-on, innovative, and collaborative individual to join our multidisciplinary team of scientists and engineers dedicated to transforming the treatment of aging and disease. The ideal candidate will flourish in a dynamic environment that values teamwork, transparency, scientific excellence, originality, rigor, and integrity.

Senior Research Associate in Chemical BiologyLocation: Cambridge, MA, USACompany: Flagship Pioneering, Inc. (FL116) About FL116 FL116, backed by Flagship Pioneering, focuses on advancing biomolecule synthesis. The team is developing a platform aimed at changing how research, diagnostic, and therapeutic molecules are manufactured. Role Overview The Senior Research Associate in Chemical Biology will join a collaborative group dedicated to applying chemical approaches to biological questions. This position centers on enzyme-mediated biomolecular synthesis, with attention to both mechanistic and molecular details. Main Responsibilities Design and conduct high-throughput experiments to study enzyme-substrate interactions Characterize biomolecular products using established and emerging techniques Support development of scalable assays to expand platform capabilities What We Look For Strong experimental skills and attention to detail Intellectual curiosity about the chemical nature of biological systems Interest in manipulating and measuring biological activities at the molecular level Comfort working in a hands-on, execution-focused, and pipeline-driven setting Motivation to grow with a rapidly evolving technology platform Work Environment This role offers the chance to build expertise at the intersection of chemistry and biology within a collaborative startup supported by Flagship Pioneering. The team values problem solvers who enjoy working on challenging scientific questions and developing new tools for biotechnology and therapeutics.

Role Overview Flagship Pioneering, Inc. is on the lookout for a visionary Senior/Executive Director to serve as the Head of Biology. In this pivotal role, you will spearhead the biological strategy and target validation within our causality-driven discovery platform. Your expertise will be essential in converting human genetic data—such as GWAS, rare variants, Mendelian randomization, and functional genomics—into robust biological validations that are pertinent to disease, while also shaping preclinical programs across a range of therapeutic areas. The ideal candidate will possess extensive target validation experience across various therapeutic modalities, with a strong emphasis on neurodegenerative diseases (including Parkinson’s disease), genomic perturbation tools, and the capability to make significant contributions to cardiovascular and immune-mediated biology. You will be responsible for building and mentoring an exceptional biology team, establishing high standards for scientific rigor and decision-making quality, and collaborating closely with data science, chemistry, and platform operations to progress targets to development readiness.

Join our innovative team as a Senior Scientist where you'll drive critical research projects and make a significant impact in the field. We are seeking a highly motivated individual with a passion for scientific discovery and a strong background in relevant disciplines.

Join Scismic, a dynamic biotech startup located in Cambridge, MA, that is at the forefront of developing innovative mRNA-modulating therapies aimed at treating a wide array of genetic disorders. Our research is focused on leveraging novel platforms to address neurological conditions, heart disease, and muscular dystrophies.Position Summary:As a Research Associate specializing in cellular neurobiology, you will play a crucial role in establishing cellular assays to validate in vitro proof of concept for our tRNA therapeutic candidates. Your expertise will be instrumental in characterizing cellular activities and understanding disease-relevant biology, ultimately guiding the prioritization of candidates for in vivo studies.

Company Overview Flagship Labs 110 Inc. (FL110) is an innovative, privately held technology company at the forefront of developing a fully integrated, end-to-end platform that revolutionizes proteomics. Our cutting-edge platform combines advanced bioengineering, machine learning, and bespoke microelectronics to deliver unparalleled precision and insights. Backed by Flagship Pioneering, we possess the vision, courage, and resources to achieve extraordinary results. Our culture fosters collaboration and creativity, making it essential for team members to embrace diverse perspectives and an inclusive mindset. If you are excited by the prospect of working in such an environment and possess some of the qualifications listed below, we encourage you to apply. Position Overview: We are looking for a passionate and skilled (Senior) Scientist, Nanopore to become part of our dynamic team. The level for this position is flexible based on experience. Your primary focus will be on the advancement of nanopore sensing technologies, contributing to the development of a nanopore-based protein reading system. As a key member of a cross-functional team, you will collaborate closely with chemists, bioinformaticians, software developers, and hardware engineers. The ideal candidate will have a robust background in nanopore technology, particularly in protein translocation, along with either relevant experience in the biotechnology sector or a proven record of scientific accomplishment.

Nuclera is a biotech company in Cambridge, UK, focused on making proteins more accessible for researchers worldwide. The team develops the eProtein Discovery™ platform, which integrates a benchtop instrument, cloud-based software, and proprietary cartridges to speed up protein access for life science applications. Role Overview The Laboratory Technician - Service Fulfillment will support custom projects and DNA construct amplification using the eProtein Discovery Platform. This position requires following standard operating procedures (SOPs) and work instructions closely to meet project goals and timelines. What You Will Do Amplify DNA constructs for customer and internal projects Carry out custom work using Nuclera’s eProtein Discovery Platform Follow SOPs and work instructions to maintain consistency and quality Organize and track samples and project progress Meet deadlines in a laboratory setting where priorities can shift quickly What We’re Looking For Background in protein science, molecular biology, or a related field Experience working in an industry laboratory Strong attention to detail and organizational skills Ability to work accurately under tight deadlines Location This role is based in Cambridge, England, United Kingdom.