Senior Frontend Engineer On-Site

Soldera is the "Stripe for Renewable Energy." We are an AI-native metalayer automating the fragmented, €13B European renewable energy certificate market.

The Traction:In 2025, we executed a breakout year: revenue scaled from €13k to €1M with consistent 30% MoMgrowth. We are backed by Lifeline Ventures, Lemonade Stand, and a fresh€1.6M deep-tech grant
to unify Europe's energy registries. We serve Fortune 500s and manage 4,000+ power plants.

The Mission:We are not just building a dashboard. We are building the
autonomous infrastructure
that buys, sells, and retires green energy certificates across 30+ disconnected national registries. We need a Senior Engineer who combines product intuition with deep AI engineeringskills to build the "brain" that makes this happen.

We believe the future of software engineering is
AI-augmented
. We care about how fast you can ship reliable, scalable value by leveraging AI.

If you are a purist who refuses to use Copilot or Cursor, this role is not for you.

If you are apragmatic builder who uses LLMs to multiply your output by 10x, welcome home.

What You Will Build:

• Autonomous Trading Agents:Design and ship AI agents that navigate legacy government portals (some typically require Excel/Email) to execute trades autonomously.
• Unstructured Data Pipelines:Build resilient systems that ingest messy data (PDFs, scanned docs, varied API formats) from 30+countries and normalize it into a pristine global standard using LLMs and OCR.
• The Metalayer API:Architect the single API that allows a global asset manager to trade in 15 regions instantly.
• Product Velocity:Work directly with the founders to prototype, ship, and iterate on features weekly.

• Senior Engineering Chops:5+ years of shipping production software (Type Script, Node.js, Python, PostgreSQL). You know howto structure a codebase that survives scaling.
• AI Implementation
  
  Experience:
  
  You have moved beyond "calling the OpenAI API." You understand RAG, structured outputs, agentic workflows (Lang Chain/Lang Graph), and prompt engineering as a discipline.
• Product-First Mindset:You don't wait for a ticket. You understand the business goal (e.g., "reduce onboarding time by 50%") and you figure out the technical solution.
• Tooling Obsessed:You are fluent in AI coding tools (Cursor, Git Hub Copilot, v0, etc.). You view coding as"architecting logic," not typing syntax.
• High Agency:We are a small, elite team of 11. There is no bureaucracy. You see a problem, you fix it.

• Core:Type Script, Python, Vue, Flask
• AI/Data:OpenAI/Anthropic APIs/Gemini, Lang Chain, Vector Databases
• Infrastructure:AWS/GCP, Docker, Terraform

• The "Pay Pal Mafia" Effect:Work alongside ex-Bolt, Wise, LHV, and Sixfold talent. We are building the next Estonian unicorn, and the early team is the most critical.
• Freedom & Responsibility:We don't track hours. We track shipping. You have the autonomy to choose the best tools for thejob.
• Significant Upside:We offer a competitive senior salary and a
  significant equity package
  . We are capturing an $80B market; your options are designed to be life-changing.
• Impact:You are literally building the digital infrastructure that accelerates Europe’s transition to renewable energy and increases energy security.