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Join a startup on the way up — not a bet, not a giant.

Tech roles at Series A–C companies backed by Sequoia, a16z, Benchmark & other top-tier VCs

  • Sequoia
  • a16z
  • Benchmark
  • Accel
  • Greylock
  • Founders Fund
  • General Catalyst
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  • Lightspeed
  • Bessemer
  • Coatue
  • Insight Partners
  • IVP
  • NEA
  • Thrive Capital
  • Sequoia
  • a16z
  • Benchmark
  • Accel
  • Greylock
  • Founders Fund
  • General Catalyst
  • Index Ventures
  • Lightspeed
  • Bessemer
  • Coatue
  • Insight Partners
  • IVP
  • NEA
  • Thrive Capital

Open roles

High-signal tech roles at Series A–C companies, refreshed as boards update.

20 results on this page
Jobs per page
PreviousPage 18Next
Xaira Therapeutics logo
BioMedical AI Research Engineer
1/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$190,000 - $280,000
Onsite
20 results on this page
Jobs per page
PreviousPage 18Next
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Agentic AI
Foundation Models
Generative AI
Genomics
+10 more
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring a Biomedical AI Research Engineer to design and deploy agentic AI systems that reason over biomedical knowledge and accelerate therapeutic discovery. The role involves building LLM-based agents, integrating scientific data sources, and collaborating with computational biologists.

Xaira Therapeutics logo
Scientist II, Display Technologies
2/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$124,000 - $155,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Generative AI
Machine Learning
Python
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring a Scientist II to lead phage display campaigns for antibody discovery, focusing on membrane proteins and high-quality data generation. The role involves experimental design, mentoring, and collaboration with computational teams.

Xaira Therapeutics logo
AI Scientist, Computational Protein Design
3/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$120,000 - $240,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Artificial Intelligence
Computational Protein Design
Deep Learning
Distributed Training & Inference
+4 more
Posted 2 weeks agoSee job

Xaira Therapeutics is looking for an AI Scientist to join its Computational Protein Design team, developing deep learning methods for generative AI models that design protein and antibody therapeutics. The role involves advancing state-of-the-art AI for biology and collaborating with interdisciplinary experts in drug discovery.

Xaira Therapeutics logo
Director, Protein Sciences
4/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$196,000 - $245,000
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Laboratory Information Management System (LIMS)
Posted 2 weeks agoSee job

Xaira Therapeutics is seeking a Director of Protein Sciences to lead protein production and characterization, drive platform innovation, and mentor a team. The role requires deep expertise in antibody production, analytical techniques, and cross-functional collaboration, with 10+ years of experience.

Xaira Therapeutics logo
Associate Scientist, Phage Display (Contract)
5/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$45 - $60
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Foundation Models
Generative AI
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring an Associate Scientist for phage display to build and automate display systems for AI antibody design. This contract role involves developing selection techniques, characterizing affinity, and requires hands-on experience in protein discovery including phage or yeast display.

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Xaira Therapeutics logo
Senior Scientist, Functional Genomics
6/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$136,000 - $170,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
AI/ML
Foundation Models
Functional Genomics
Generative AI
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring a Senior Scientist to architect and lead in vivo CRISPR screening, advancing high-throughput functional genomics for drug discovery. The role includes developing scalable screening protocols, collaborating with AI/ML and computational teams, and mentoring junior staff.

Xaira Therapeutics logo
AI in Residence
7/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$10,000 - $15,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Computational Biology
Foundation Models
Generative AI
Machine Learning
Posted 2 weeks agoSee job

Xaira Therapeutics seeks exceptional researchers and engineers for its AI in Residence program, an industry alternative to a postdoc. Residents apply frontier machine learning to drug discovery, developing models and pipelines that directly influence therapeutic programs.

Xaira Therapeutics logo
Senior Scientist, Computational Biology
8/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$136,000 - $170,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
AI/ML
Amazon Web Services (AWS)
Docker
Generative AI
+6 more
Posted 2 weeks agoSee job

Xaira Therapeutics seeks a Senior Scientist, Computational Biology to lead end-to-end computational analysis of large-scale single-cell Perturb-seq screens, build scalable bioinformatics pipelines, and integrate multi-modal omics data to support therapeutic discovery and AI/ML modeling. This on-site role in South San Francisco requires deep expertise in single-cell RNA-seq, Perturb-seq, Python, and production workflows.

Xaira Therapeutics logo
Accounting Manager
9/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$135,000 - $155,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Google Workspace
Microsoft Excel
NetSuite
Posted 2 weeks agoSee job

Xaira Therapeutics seeks an Accounting Manager to manage accounting operations, lead the financial close process, and build scalable accounting infrastructure. This hands-on role requires 5+ years of progressive accounting/finance experience.

Xaira Therapeutics logo
AI Scientist, BioMedical AI
10/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$150,000 - $240,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Causal Inference
Foundation Models
Generative AI
Python
+1 more
Posted 2 weeks agoSee job

Xaira Therapeutics is looking for an AI Scientist to develop and apply foundation models to large-scale perturb-seq and single-cell datasets, aiming to uncover new biological mechanisms and therapeutic opportunities. The role involves designing scalable ML architectures, collaborating with experimental biologists, and publishing results.

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Xaira Therapeutics logo
Associate Director, Analytical Development (Biologics)
11/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$172,000 - $215,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Foundation Models
Generative AI
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring an Associate Director, Analytical Development (Biologics) to lead analytical method development, validation, transfer, and stability programs for biologics from preclinical through clinical stages. This role oversees external laboratories, supports CMC regulatory submissions, and ensures phase-appropriate analytical strategies.

Xaira Therapeutics logo
AI Research Engineer
12/20Posted 2 weeks ago

Xaira Therapeutics · Dorris, Siskiyou County, California

$190,000 - $280,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Deep Learning
Foundation Models
Generative AI
Machine Learning
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring an AI Research Engineer to develop and deploy machine learning models for drug discovery and protein/antibody design. The role involves collaborating with AI scientists and drug discovery experts, with a focus on production-ready ML systems. Open to San Francisco Bay Area or Seattle, WA; base pay $190,000-$280,000.

Xaira Therapeutics logo
AI Scientist - Biomedical Multimodal Modeling
13/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$170,000 - $240,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
CI/CD
Deep Learning
Foundation Models
JAX
+2 more
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring an AI Scientist to build multimodal foundation models for biomedical data, combining representation learning and generative modeling to advance drug discovery. The role involves training large-scale models, cross-modal alignment, and building scalable ML systems.

Xaira Therapeutics logo
Software Engineer, ML Platform
14/20Posted 2 weeks ago

Xaira Therapeutics · Seattle, King County, Washington

$140,000 - $215,000
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Ansible
JAX
Kubernetes
Python
+2 more
Posted 2 weeks agoSee job

Xaira Therapeutics is seeking a Software Engineer to join its ML Platform team, focusing on designing and deploying AI infrastructure for large-scale model training. The role involves building training systems, storage subsystems, and evaluation tools using Kubernetes, Slurm, Python, and deep learning frameworks. Requires 5+ years of experience and offers a competitive salary.

Xaira Therapeutics logo
Contracts Manager
15/20Posted 2 weeks ago

Xaira Therapeutics · Dorris, Siskiyou County, California

$124,000 - $155,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Contract Lifecycle Management
Generative AI
Google Workspace
Microsoft Excel
+1 more
Posted 2 weeks agoSee job

Xaira Therapeutics seeks a Contracts Manager to independently draft, negotiate, and manage R&D contracts while building an AI-enabled contracts function. This role supports drug discovery and clinical enablement, with a focus on CLM optimization and AI-driven process improvements.

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Xaira Therapeutics logo
Lab Automation Engineer (Contractor)
16/20Posted 2 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$64 - $74
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
3D Printing
APIs
C Programming Language
CAD
+2 more
Posted 2 weeks agoSee job

Xaira Therapeutics is hiring a Lab Automation Engineer Contractor to program, operate, and maintain liquid handling platforms and integrated workcells supporting protein production, analytical, and next-generation sequencing workflows. The role includes troubleshooting, preventive maintenance, and supporting scientists using lab automation.

Pulumi logo
Senior/Principal Product Manager, IaC Cloud
17/20Posted 2 weeks ago

Pulumi · Seattle, King County, Washington

$166,000 - $227,850
Remote
Series C
51–200
$10M-$100M
New Enterprise Associates (NEA)
Amazon Web Services (AWS)
AWS CloudFormation
Crossplane
Datadog
+12 more
Posted 2 weeks agoSee job

Pulumi is hiring a Senior/Principal Product Manager to own Pulumi Cloud's platform services, including ESC, managed state, registry, authorization, and user experiences. The role focuses on building agent-ready, human-friendly infrastructure control plane products. This position can be based in Seattle or remote.

Echodyne logo
Architect, Manufacturing Test
18/20Posted 3 weeks ago

Echodyne · Kirkland, King County, Washington

$149,659 - $224,437
Onsite
Series C
51–200
$100M-$1B
New Enterprise Associates (NEA)
Posted 3 weeks agoSee job

Echodyne seeks an Architect, Manufacturing Test to lead end-to-end manufacturing test strategy and infrastructure for radar products. The role involves designing test processes, defining HW/SW requirements, and collaborating with cross-functional teams. Onsite in Kirkland, WA.

Xaira Therapeutics logo
Senior Scientist, Functional Genomics
19/20Posted 3 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$136,000 - $170,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
AI/ML
Functional Genomics
Generative AI
Python
Posted 3 weeks agoSee job

Xaira Therapeutics seeks a Senior Scientist to lead in vivo CRISPR screening efforts. The role involves developing high-throughput functional genomics protocols and collaborating with AI/ML teams. Requires Ph.D. and 4+ years experience.

Xaira Therapeutics logo
Senior Scientist, Protein Engineering
20/20Posted 3 weeks ago

Xaira Therapeutics · South San Francisco, San Mateo County, California

$150,000 - $170,000
Onsite
Series A
$1B-$10B
Lightspeed Venture Partners
New Enterprise Associates (NEA)
Computational Protein Design
Generative AI
Posted 3 weeks agoSee job

Senior Scientist role at Xaira Therapeutics focusing on designing, engineering, and characterizing therapeutic proteins and antibodies using AI-driven drug discovery. Responsibilities include protein engineering strategies, binder discovery, and collaboration with cross-functional teams.

Daily job alert

Get new VC-backed tech jobs in your inbox every morning.

Narrow your alert

Free daily email. Confirm via link to activate. Unsubscribe anytime.