Software Engineering Intern [Fall/Winter 2026]

Melius AI, Inc

$102K *
Consumer Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Pursuing a CS degree or equivalent experience with tangible projects.
  • Proficiency in TypeScript or strong programming skills with adaptability.
  • Experience working with LLMs, agent frameworks, or relevant tech stacks.
  • Attention to detail in user experience and interaction design.
  • Comfortable navigating uncertainty and adapting to rapid changes.

Responsibilities

  • Lead and develop new tools for the agent functionality end-to-end.
  • Observe user sessions and rapidly implement fixes as needed.
  • Add evaluations and traces to assess performance improvements of the agent.
  • Enhance canvas interactions for a better user experience.
  • Collaborate closely with senior engineers and founders for code reviews.

Benefits

  • $8500 monthly salary
  • $2500 monthly housing stipend
  • $70 daily meal per diem
  • Work in-person in NYC with a passionate team
  • Opportunity for substantial project ownership and rapid feedback.
Full Job Description
The role

This is not a "summer project" internship. Expect to be treated exactly as a full time engineer would be from the first day at your job. There will be dozens of projects that you lead and are expected to educate both customers and other members of the team on.

The stack: Next.js and a real-time CRDT canvas on the frontend, NestJS / MikroORM / Postgres / Temporal / Turbopuffer on the backend, and the agent and model orchestration layer that ties it all together.

High level activities for the internship might include:
  • Building new tools for our agent end-to-end - what it can do on the canvas, what it can change in the timeline editor, and how it can semantically search in the asset manager.
  • Sitting in on user sessions, watching a creative hit a rough edge, and shipping the fix that same hour.
  • Adding evals and traces that tell us, honestly, whether the agent got better this week.
  • Polishing canvas interactions that thousands of creatives touch every day - the small details users never explicitly notice but always feel.

You'll work directly with senior engineers and the founders. Expect fast feedback, real code review, and more ownership than you've been trusted with before.

You'll fit if you
  • Are pursuing a degree in CS (or equivalent) and have built something real: a side project people actually used, open source contributions, a previous internship where you shipped.
  • Are comfortable in TypeScript, or good enough at programming that you'll be effective in it within a week.
  • Have played with LLMs beyond the chat box. Tool-calling, agent frameworks, React Flow, Yjs/CRDTs, or anything you hacked together at 2am are all table stakes.
  • Care about small details users never explicitly notice.
  • Are comfortable with uncertainty. We might implode tomorrow or we might grow 100,000,000% WoW next week.
  • Default to shipping. Let's get shit done.


What we offer
  • $8500 monthly salary
  • $2500 monthly stipend for housing
  • $70 per diem for meals
  • In-person in NYC with a lean team of people who love the game, obsessed with building the future of creativity.


If this is the kind of problem you're interested in, apply

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