Senior Fullstack Engineer (React, TypeScript, Node.js)

HelsinkiCompetitive0 applicants

About this role

The software consultancies use to run their business is either too complex to live with or too shallow to trust - we're building Operating (https://www.operating.app) to be both deep and pleasant, the kind of system that lets a 300-person consultancy run on a 3-person back office. It handles staffing, allocations, billing, and financial planning: everything between a deal landing and the invoice getting paid. Many of our customers come to us from other tools, having outgrown the simple ones or given up fighting the complex ones. Consultancies are running their businesses on Operating today, but the product is still very much in build mode. One of our founders just moved to the US to lead our US expansion, and the next year is about scaling the rest of the company while we keep building.

We're hiring a senior fullstack engineer to help build it.

Responsibilities

  • You'd work on product features end to end: sitting with customers, working with product and design, shipping the code, watching what happens. Over time, you'd take ownership of a domain (allocations, the financial model, billing, integrations) and make it yours. You'd be the fifth engineer. The CTO still writes code. Decisions get made in the room you're in, by the people doing the work.
  • You'd also help shape how we build: reviewing PRs, mentoring as we grow, and influencing the architecture and engineering standards as the product gets bigger.
  • Some of what you might ship in your first six months:
  • An AI-driven workflow that takes a signed deal in our CRM and produces a staffed, scheduled project plan
  • An integration layer that pulls data from a dozen accounting systems without melting
  • A month-end close workflow that turns the finance controller's worst week of the month into a clean afternoon
  • A revamped reporting and dashboard experience - the place a COO can actually answer "is the business healthy?" in one screen
  • This works if you can do senior-level work, whether you've held the title before or this

EU Requirements

Job Details

Posted20 May 2026
Closes19 June 2026

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