Junior Software Engineer

About this role

ABOUT LUMANU

Lumanu handles payments and compliance for the creator economy. Brands, agencies, and platforms use us as their merchant of record: we take care of onboarding, tax paperwork, and global payouts so they can pay creators and vendors anywhere in the world without dealing with wires, currency surprises, or a scramble at tax season.

Since launch we've moved over $1.5 billion to more than 100,000 creators and contractors in 180+ countries, for customers like Warner Music Group, PepsiCo, WPP, and Keurig Dr Pepper.

THE ROLE

This is a junior backend role on a small, senior team. You'll write real code that ships to production early: features across our GraphQL API, our serverless services, and the Postgres data model underneath. These are the systems that validate payments, onboard vendors, and guard tax and identity data.

You won't be thrown in the deep end alone. You'll pair with engineers who've built this kind of thing before, get careful code review, and pick up more ownership as you find your feet. Our code moves money, so we care a lot about getting the details right, and a big part of this job is learning how.

WHAT YOU'LL DO

• Write backend features in TypeScript on AWS Lambda, backed by Postgres and Hasura GraphQL.

• Work on the data model and API: writing migrations, adjusting Hasura permissions, running GraphQL codegen.

• Help build and maintain integrations with our fintech and compliance partners.

• Learn how we handle sensitive data like tax IDs, identity documents, and payment details, behind encryption and tight access controls.

• Pitch in on the logic behind global payouts, W-9/W-8 collection, tax validation, and 1099s.

• Help keep things healthy in production with OpenTelemetry, Sentry, and Pino.

• Write tests that actually catch bugs (Jest, plus Playwright for end-to-end).

• Build alongside product and frontend engineers in a Next.js app.

WHAT WE'RE LOOKING FOR

We care more about how you think than what your resume says. You'll...