Founding Engineer (Full Stack)

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Founding Engineer (Full Stack)

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Crimson (YC X25)1 day ago Be among the first 25 applicantsJoin to apply for the

Founding Engineer (Full Stack)

role at

Crimson (YC X25)This range is provided by Crimson (YC X25). Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay range

Crimson is the AI platform for high-stakes litigation. We''re working with top law firms in the UK and US to streamline how complex disputes are run. Our platform drafts pleadings and submissions, analyzes judgments and orders, summarizes transcripts and locates key evidence in seconds.

We''re a team of three co-founders with deep technical and domain expertise. Our users are lawyers who trust us with their most sensitive case files. They care about security, accuracy, reliability and speed, and so do we.

We''re looking for an exceptional full-stack engineer to join us as one of our first employees. You''ll ship production code from day one and own major features end-to-end. That means talking to users, scoping the problem, building the solution and improving it over time.

What You''ll Do

Contribute to the entire stack, from cloud infrastructure to prompting to UX (Python backend, Next.js with TypeScript frontend, PostgreSQL, SOTA LLMs. Deployed to Azure via IaC (Bicep) with CI/CD pipelines powered by GitHub Actions)Collaborate closely with users to understand how lawyers work and what they needArchitect and scale document ingestion and processing pipelines to power fast, accurate search and data extraction for large volumes of legal documentsDevelop intelligent, multi-step agent workflows that can autonomously handle complex legal tasks - from surfacing key testimony across depositions to generating fact chronologies and auto-detecting inconsistencies in opposing counsel’s filingsDesign and bring to life intuitive AI-native user experiences tailored to litigation workflowsImprove system performance, stability and observability as we scaleHelp shape our engineering culture and team - from best practices to hiring and mentorship

This is for you if …

You’re driven, self-directed and exceptionally capableYou’re obsessed with building outstanding products for demanding usersYou’re excited to work on hard problems, take ownership and push things throughYou have high agency and a bias for shippingYou have excellent product judgement, communication skills and attention to detailBonus points if you have an interest in legal tech

Why join us

Over the next few years, the legal industry will change beyond recognition. You’ll be at the heart of that change, helping us build a category-defining companyWe’re backed by YC and other top investorsWe’re working with major UK and US law firmsYou’ll get ownership, equity and the opportunity to shape the business and lead engineering teams

Details

Location: London/hybridSalary: £70-100kMeaningful equityContact: tell us about things you’ve built by emailing founders [at] crimson [dot] law. We’ll get back to you within 24h.

Seniority level

Seniority level Mid-Senior levelEmployment type

Employment type Full-timeJob function

Job function Engineering and Information TechnologyIndustries Software DevelopmentReferrals increase your chances of interviewing at Crimson (YC X25) by 2xSign in to set job alerts for “Full Stack Engineer” roles.

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