Senior Software Engineer

crosby· Engineering
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📍 New York CityFullTime💰 USD 220K–300K/yr

About this role

Welcome to Crosby, the next-generation law company!

We're a team of technologists and legal experts collaborating closely to reimagine corporate legal services from the ground up. We build proprietary technology and human in the loop workflows to radically enhance the lawyer machine relationship. Our mission is to review complex documents faster than ever and with perfect quality

Crosby was founded by Ryan (Penn, Stanford Law, ex Cooley, former GC) and John (Penn M&T, ex Ramp, ex Google).

We believe:

  • A great legal system is the watermark of a great society.

  • Legal work is an art and science. We want to discover the frontier between the two and codify the scientific parts, which is a magnificent puzzle.

  • Selling work, not software, is the best way to realize the productivity gains of GenAI for professional services.

  • In an in-person culture at our NYC office.

The Role:

  • As an Engineer, you’ll have the unique opportunity to define and build the core technology stack that powers Crosby’s platform. You’ll work across the stack, building the robust back-end systems and tooling interfaces needed to deliver on our vision.

  • In this role, you’ll collaborate directly with the founders, define technical priorities, and ensure the scalability of our platform. You'll have a direct impact on our product and user experience as we create tools to make contract review faster and more efficient.

What You’ll Do:

  • Design and implement scalable systems to process contracts at scale.

  • Build bleeding-edge agentic AI tools to help the Crosby Legal team review contracts faster.

  • Work closely with the founders and cross-functional teams to define and execute on technical priorities.

  • Establish the foundation for a robust and maintainable codebase as we grow.

  • Mentor and recruit engineers to help build out the team.

What We’re Looking For:

  • Experience: 3+ years of engineering experience, ideally including Python, TypeScript.

  • Problem-focused: Strong sense of the problem behind a problem, and attention to detail in delivering high-quality products.

  • Builder mindset: Excited about the opportunity to create and scale systems from the ground up.

  • Collaborative: Effective communicator who thrives in cross-disciplinary teams.

  • Ownership: Driven to take responsibility for projects from ideation through execution.

  • Curiosity: Passionate about learning and experimenting with new technologies.

Ideal Qualifications:

  • Strong Python, TypeScript skill set

  • Strong experience with NLP, LLMs, RL, and Information Theory.

  • Experience with modern front-end frameworks (e.g., React, Vue, or Svelte).

Why Work at Crosby Legal:

  • Competitive salary and equity compensation.

  • Comprehensive health, dental, and vision insurance.

  • Unlimited PTO

  • In-person team in NYC with a collaborative, high-energy environment.

Apply now to join Crosby and be part of transforming the legal landscape.

Note: Crosby is an equal opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or other applicable legally protected characteristics. Pursuant to New York Labor Law Section 194-b, US Pay Range is $170,000 - $250,000 which represents the base salary we reasonably expect to pay for this position at the time of this posting. Final compensation will be determined based on skills, experience, and qualifications.

Frequently Asked Questions

What is the salary for the Senior Software Engineer role at crosby?
The listed salary for this Senior Software Engineer position at crosby is USD 220K–300K/yr. This is an FullTime role.
Where is the Senior Software Engineer position at crosby located?
This Senior Software Engineer role at crosby is based in New York City. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Senior Software Engineer role at crosby full-time or part-time?
This is listed as a FullTime position. It is posted as a Senior Software Engineer role in the Engineering department at crosby.
Which team or department does the Senior Software Engineer at crosby belong to?
This Senior Software Engineer position is part of the Engineering department at crosby. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Software Engineer position at crosby?
Click the "Apply Now" button on this page. You will be redirected to crosby's official application portal hosted on ashby where you can submit your application directly.
When was the Senior Software Engineer job at crosby posted?
This Senior Software Engineer position at crosby was posted on Jun 13, 2025. Apply as soon as possible — early applications are often reviewed first.
Senior Software Engineer
crosby · 💰 USD 220K–300K/yr
Apply for this role ↗

You'll be redirected to crosby's official application page on Ashby ATS.