Scientific Software Engineer | Kumar Lab

JAX; Bar Harbor (ME); On-site; USD 86,000 - 144,000; Full time

Job summary

The Kumar Lab at JAX seeks a Scientific Software Engineer to advance machine learning and computer vision for digital behavioral measures. You will design, train, and deploy models, improve existing algorithms, and apply robust MLOps practices while mentoring teammates and contributing to publications.

A strong ML background and ability to communicate with biologists are essential. You will work with Python, PyTorch, and a suite of tools (ffmpeg, C++, Cython, SQL, Bash, Kubernetes) in a

Qualifications

• Master's degree in computer science, ML, or related field preferred; BS/BA with equivalent hands-on experience accepted.
• About 3 years of hands-on ML experience with ability to judge method applicability and explain performance.
• Production ML pipelines experience, model versioning, and edge inference capabilities.

Responsibilities

• Design, train, and deploy computer vision and ML models and the pipelines around them, from aims through production.
• Write readable, maintainable code; contribute to publications and open-source releases.
• Collaborate with lab members, review code, and mentor trainees while pursuing technical growth.

Skills

Depth in machine learning

LLM-based coding assistants

Production machine learning

Python

PyTorch

ffmpeg

C++

Cython

SQLite

PostgreSQL

SLURM

Bash

Kubernetes

Go

Cloud platforms (GCP/AWS)

Education

Master's degree in CS/ML preferred

BS/BA with equivalent hands-on experience

Tools

PyTorch

ffmpeg

C++

Cython

SQLite

PostgreSQL

SLURM

Bash

Kubernetes

Go

GCP / AWS

Job description

**Job Summary**The Kumar Lab studies the genetic and neurological basis of behavior with the goal of therapeutic and mechanistic discovery. We leverage machine learning and computer vision methods to model human diseases by transforming videos of mice into quantitative behavioral traits. Technology developed by our lab has been deployed in the JAX Envision System, a home cage monitoring platform. Envision streams continuous petabyte-scale video from animal housing into a cloud archive and operates on it in close to real time using multi-task algorithms. Segmentation, pose estimation, and instance assignment are all used for action recognition, action localization tasks using supervised and unsupervised approaches to quantify complex animal behaviors representative of health and disease.As a Scientific Software Engineer, you will collaboratively shape the machine learning and computer vision engineering behind digital measures, harden pre-existing algorithms, and leverage robust MLOps principles. You will follow technical direction, mentor trainees, and drive publications and model releases that come out of the work.A successful candidate will be independently motivated, work collaboratively, and contribute meaningfully to the development of therapeutics for neurodevelopmental and neuropsychiatric disorders.**The Challenges**Mice are inherently difficult to study because they tend to avoid detection. As highly flexible, deformable animals, they are primarily active in low-light conditions and occupy small, confined spaces. These behaviors create significant challenges for computer vision tasks such as segmentation, pose estimation, instance tracking and identity tracking.* **Human Annotation is Expensive.** Expert behaviorists’ time is limited, so creating a system that enables quick, high impact, scalable annotation is a must.* **Occlusion Complicates Behavior Annotation.** Group-housed mice huddle and occlude each other.* **Models Must Generalize.** Measures must perform across a diversity of genetic backgrounds, environments, coat colors, and sites, and across an archive too large to easily reprocess. Continual learning, edge-case mining, and efficient deployment are critical. You will be working with messy real-world data.**Minimum Requirements**Education: Bachelor's requiredExperience: 3 years required/5 years preferred**Key Responsibilities and Essential Functions****Responsibility****Time Allocation*** 70% - Design, train, and deploy computer vision and machine learning models and the pipelines around them, from stated aims through production, working with direction from project sponsors/PIs and senior team members. Write code other people can read, run, and extend. Contribute to the publications and open-source releases that come out of these projects.* 20% - Evaluate models: quantify how measures hold up across strain, rig, and site. Assess new methods and architectures against our problems and report what actually survives the comparison.* 10% - Collaborate with lab members, review code, document what you build, and invest in your own technical growth.**What You're Good At*** **Depth in machine learning.** A master's degree in computer science, machine learning, or a related field is preferred; a BS or BA with equivalent demonstrated experience is considered. Either way we expect roughly three years of hands-on work and the ability to judge whether a method applies to our problem, implement it, and explain its performance.* **Proficiency leveraging LLM-based coding assistants** (e.g., GitHub Copilot, Claude Code) to accelerate development, while maintaining rigorous standards for code quality, correctness, and maintainability.* **Production machine learning.** PyTorch, training and evaluation infrastructure, model versioning, and deployment — including quantization and runtime optimization for edge inference — plus the data plumbing that carries video at volume (object storage, containers, Kubernetes, SLURM, Go, Bash).* **Working familiarity with technologies** such as Python, PyTorch, ffmpeg, C++, Cython, SQLite, PostgreSQL, SLURM, Bash, as well as cloud providers and technologies like GCP, AWS. Specialized expertise in machine learning and machine learning frameworks and tools.* **Judgment about prioritization.** This role demands that an individual balance competing priorities across scientific, engineering, and deadline driven requirements.* **Excellent oral and written communication.** You will explain complex technical trade-offs to biologists, to institutional stakeholders, and to external collaborators, and you will contribute to manuscripts. You proactively elicit feedback, are comfortable explaining your work to scientists, and encourage discussion.* **Engagement with your work and a track record of productivity.** Background in biological sciences, or a real appetite to learn the domain.**To Apply**Send a CV and one paragraph that names which of the problems above interests you and points at one thing you have built, with a link. If your work involves video or behavior, tell us how you split train and test, and why.Pay Range: $85,987 - $143,962, pay is determined by years of experience.