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Salary
≈ $56k – $96k per year (Estimated)
Location
Hybrid (San Francisco, United States, Lausanne, Switzerland)
Seniority
Intern
Employment
Internship

Confirmed on the employer's own hiring board on Sep 30, 2026. First seen by Alion on Jul 23, 2026.

Overview
Company
Impact
Profile match
Compresr is an LLM context-compression API: send long context plus your query, get back a shorter context that keeps the answer-bearing tokens and drops the rest. Cut token cost and latency; at light compression, match or beat full-context accuracy. Python SDK, TypeScript SDK, or hosted HTTP API.

Duration: 3 months, with a possibility of a full-time job afterwards

Start date: immediately

About us

  • We're building state-of-the-art context compression. Our mission is to become the "Cloudflare for LLMs", a compression layer embedded into most LLM pipelines by default.

  • We're a team of ex-EPFL MSc/PhDs. We started by publishing papers, then got into YC and started making money helping companies cut their LLM costs.

  • We run the business like a research lab: form hypotheses, kill the ones that don't work, double down on the ones that do.

What we offer

  • Competitive compensation

  • All the resources you need: GPUs, subscriptions, OpenAI/Anthropic credits

  • As much responsibility as you can handle. Our goal is to make you an irreplaceable part of the team

  • A fast-paced environment where you'll learn much faster than usual, surrounded by technical people who push each other

  • Possibility of a full-time offer based on performance

What we can't offer

  • Hands-on supervision. We're around for brainstorming and high-level guidance, but you own your work and will be the person who knows it best.

  • A well-defined project. We're early-stage and led by customer and market pull, so we work on several directions at once. You'll navigate this alongside the rest of us.

  • Training wheels. After a short onboarding, you'll work on hard, customer-facing, time-sensitive problems like everyone else. Not a typical internship.

We're running a tight ship on a rough sea. Not for everyone, but you'll come out the other side a much stronger sailor.

About you

1. You love research, read papers and hack on new repos for fun

2. Comfortable training ML models/transformers and doing independent applied research

3. Excellent Claude Code (or similar) user

4. Highly ambitious, ready for high-intensity YC startup culture, self-motivated

5. Strong communicator, fast response time, team player

Preferred

1. LLM research experience, shown through publications, open-source contributions, or personal projects

2. BSc or MSc in CS/DS, math, or physics.

3. Startup or research internship experience (industry or academic)

Interview process

  • A 40-minute call: 20 minutes for introductions and motivations, followed by 20 minutes of technical questions (mostly ML/LLM foundational questions)

  • A paid take-home project designed to take around 6 hours, followed by a 30-minute call to walk us through your work and answer a few questions

  • A 30-minute culture interview with the whole team

  • Offer

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