**Company Description**

Trine is dedicated to creating a better future by enabling individuals to invest in solar energy companies in emerging markets. Through scalable and customised financing solutions, Trine empowers solar companies to grow and meet the increasing demand for sustainable energy. By accelerating the deployment of clean energy solutions, Trine contributes to building a greener and more sustainable future for all.

**Role Description**

Trine’s technology has been built and run by its founder and CTO since day one. We’re now handing over responsibility for the platform to a new technical lead.

You’ll step in as lead developer, inheriting a mature but evolving platform and taking responsibility for Trine’s technology going forward. We’re recruiting two engineers as part of this transition. You’ll be the technical lead, helping shape how the team and the platform evolve from here.  There’s no tech manager above you; you report directly to the CEO.

**What you'll own**

- The full platform: backend, frontend, infrastructure, and data pipelines
- Technical architecture and tooling decisions—you choose how things are built
- Team decisions: hire locally in Gothenburg or expand the current Vietnamese dev team
- AI tooling strategy across the company (everyone already uses AI daily)

**Tech stack**

- Backend
- C# / .NET
- Frontend
- Aurelia (TypeScript, HTML, SCSS)
- Infrastructure
- Azure
- Data & Analytics
- Google BigQuery, Mixpanel

**What makes it interesting**

From the outgoing developer:

**Full autonomy.**

You decide how to solve things, how and where to work. No layers of approval, no product managers writing tickets for you.

**AI-native workflows.**

Support staff query BigQuery through Claude Code to investigate cases. Non-developers submit pull requests for bug fixes. You’d shape how all of this evolves.

**Genuine complexity.**

Payment flows across multiple currencies and markets, repayment tracking across borrowers, regulatory compliance, and investor-facing dashboards. Decisions matter here.

**Real feedback loops.**

We run A/B tests and measure what ships. Recent feature launches have driven measurable increases in investments. You will see the direct impact of your work.

**What we're looking for**

- Strong full-stack experience—you’re comfortable across backend, frontend, and infrastructure
- Experience with C# / .NET (or willingness to work in it)
- Comfort working independently and making architectural decisions without a team to lean on
- Interest in AI tooling and how it changes development workflows
- A pragmatic mindset: you care about shipping things that work, not chasing the newest framework

**Nice to have:**
experience in fintech, payment systems, or regulated industries.

**The lifestyle**

- Office in central Gothenburg, but flexible on where we work
- Twice-a-year full-company gatherings around the world
- A small, flat team where your input shapes the company—not just the code