Research Associate I/II, Preclinical Research (Contract)

Lexeo Therapeutics
New York, NY
On-site

Who this role is best for

Aimed at mid-level laboratory professionals with in vitro pharmacology experience who can work onsite in New York, focusing on stem cell-derived cardiomyocyte platforms and high-quality data generation.

Best fit for

  • Candidates with hands-on experience in iPSC culture and molecular biology techniques
    — “Culture and maintain human iPSC-derived cardiomyocytes and other mammalian cell lines using aseptic technique”
  • Individuals seeking to build a career in genetic disease therapeutics with a focus on cardiac research
    — “advancing new therapies for patients with genetic heart disease while gaining valuable experiences for a future career in biotech and medicine”
  • Professionals with a background in assay development and documentation
    — “contribute to assay development, and generate high-quality data”

Things to consider

  • Must be available for full-time onsite work in New York City
    — “Ability to work onsite 5 days/week at our New York City HQ”

How to stand out

  • Highlight experience with ddPCR, qPCR, and Western blotting in your resume
    — “Perform ddPCR, qPCR, conventional PCR, gel electrophoresis, Western blotting, and ELISA”
  • Emphasize your ability to document and communicate experimental results clearly
    — “maintain complete and accurate laboratory records and contribute to the development and revision of assay SOPs”
  • Showcase any prior work with in vitro pharmacology or cardiac biology platforms
    — “Prior experience in an in vitro pharmacology group within the biotechnology or pharmaceutical industry”
  • Mention familiarity with automated workflows or AI-native lab systems if applicable
    — “Familiarity with AI-native, agentic lab-in-the-loop workflows connecting experimental design, automated execution, real-time data analysis, and iterative decision-making”
Pace · SteadyCollaboration · MediumAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • generate and validate cellular knockdown and overexpression models
  • culture and maintain human iPSC-derived cardiomyocytes
  • perform ddPCR, qPCR, conventional PCR, gel electrophoresis, Western blotting, and ELISA
  • maintain complete and accurate laboratory records
  • analyze experimental data and prepare concise summaries
Typical background
cell biologymolecular biologypharmacology

Skills & requirements

Required

Cell BiologyMolecular BiologyPharmacologyIpsc-cm PlatformCellular And Molecular AssaysAssay DevelopmentDdpcrQpcrGel ElectrophoresisWestern BlottingElisaLaboratory SkillsRecord-keepingFast-paced Environment

Preferred

In Vitro PharmacologyHigh-throughput Screening PlatformsAutomation And WorkflowsJess Automated Western Blotting PlatformTr-fretNanobitFliprMEA AssaysEngineered Heart Tissue ModelsCardiac BiologyAi-native Lab-in-the-loop Workflows

Stack & domain

Cell BiologyMolecular BiologyPharmacologyIpsc And Differentiation ProtocolsCardiomyocytesNeuronsCellular Transfection MethodsDdpcrQpcrConventional PCRGel ElectrophoresisWestern BlottingElisaFlow CytometryFluorescence MicroscopyAssay DevelopmentData AnalysisSopsAttention To DetailRigorous Record-keepingFast-paced EnvironmentTeamworkCommunicationProblem SolvingBiotechMedicineCardiologyGenetic Heart Disease

About the role

Original posting from Lexeo Therapeutics via Lever

Role Summary 

The Research Associate I/II will support Lexeo’s human induced pluripotent stem cell–derived cardiomyocyte (iPSC-CM) platform, a core in vitro system used to evaluate target engagement, mechanism of action, and potency across discovery and preclinical programs. This hands-on laboratory role will execute established cellular and molecular assays, contribute to assay development, and generate high-quality data. The position reports to the Head of Cardiac Research and receives day-to-day scientific direction from the Preclinical Scientist leading the platform. This is an exciting opportunity to join a cutting-edge drug discovery team advancing new therapies for patients with genetic heart disease while gaining valuable experiences for a future career in biotech and medicine 

Primary Responsibilities:

  • Generate and validate cellular knockdown and overexpression models
  • Culture and maintain human iPSC-derived cardiomyocytes and other mammalian cell lines using aseptic technique
  • Perform ddPCR, qPCR, conventional PCR, gel electrophoresis, Western blotting, and ELISA to support mechanism-of-action and target-validation studies
  • Maintain complete and accurate laboratory records and contribute to the development and revision of assay SOPs
  • Analyze experimental data and prepare concise summaries for Preclinical team 

Required Skills and Qualifications:

  • Bachelor’s degree in cell biology, molecular biology, pharmacology, or a related field with 1-3 years of industry and/or academic lab experience
  • Hands-on experience culturing iPSC and differentiation protocols for cardiomyocytes/neurons
  • Hands-on experience with cellular transfection methods
  • Experience with several of the following methods: ddPCR, qPCR, semi-quantitative PCR, Western blotting, ELISA, flow cytometry, and fluorescence microscopy
  • Strong laboratory skills, rigorous record-keeping, attention to detail, and the ability to work effectively in a fast-paced environment
  • Ability to work onsite 5 days/week at our New York City HQ  

Preferred Skills and Qualifications:

  • Prior experience in an in vitro pharmacology group within the biotechnology or pharmaceutical industry
  • Experience with high-throughput screening platforms, automation and workflows
  • Experience with the Jess automated Western blotting platform
  • Experience with TR-FRET, NanoBiT, FLIPR, or MEA assays
  • Familiarity with engineered heart tissue models and cardiac biology
  • Familiarity with AI-native, agentic lab-in-the-loop workflows connecting experimental design, automated execution, real-time data analysis, and iterative decision-making
  • Demonstrated ability to generate, document, and communicate high-quality experimental results; publications or patents are a plus 

About LEXEO 

Lexeo Therapeutics is a New York City-based, clinical stage company dedicated to reshaping the path of genetic disease. By advancing pioneering science, Lexeo seeks to set a new standard in the treatment of cardiovascular and neurological genetic diseases, charting the path to patient outcomes once thought out of reach. The Company is advancing a portfolio of therapeutic candidates designed to address the underlying genetic causes of disease, including LX2006 for Friedreich ataxia (FA), LX2020 for plakophilin-2 (PKP2) arrhythmogenic cardiomyopathy, and others in devastating diseases with high unmet need. 

LEXEO Therapeutics is an EEO employer committed to an exciting, diverse, and enriching work environment.

Source: Lexeo Therapeutics careers (Lever)

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