About Lightbringer

At Lightbringer, we believe that protecting world-changing innovations should be clear, accessible, and fast. We are a fast-growing company reshaping a €90 billion global industry by building the patent service of the future. Our platform leverages agentic and generative AI to automate complex legal tech workflows—from invention disclosure and ideation to priority drafting and international filing—while keeping expert patent attorneys in the loop for quality assurance.

Backed by top-tier European VCs (including 6DC, NEWION, Luminar Ventures and Alliance VC), our team is scaling fast. We’ve recently moved into a creative, historic space in Varvsstaden, Malmö, and we are looking for a software engineer with focus on AI to help build the next generation of our AI-native platform.

The Role

This isn't a role for someone who just hooks up a basic OpenAI API wrapper. You will be architecting the complex cognitive systems that power Lightbringer.

As our AI Engineer, you will build the orchestration layer of our platform. You will design multi-agent AI systems that can ingest highly technical invention disclosures, reason through complex legal frameworks, search global patent databases, and generate precise, legally sound documentation. You will collaborate closely with other developers and patent professionals to turn state-of-the-art AI capabilities into deterministic, production-ready features.

What you’ll do

• Architect Agentic Workflows: Design, implement, and maintain advanced multi-agent systems and LLM chains capable of executing long-running, complex reasoning tasks.
• Optimize for Accuracy & Determinism: Overcome the inherent challenges of LLMs (hallucinations, formatting drift) to ensure our AI outputs meet the rigorous structural and legal standards required for patent filings.
• Model Evaluation & Tooling: Establish robust benchmarking, evaluation metrics, and guardrails to continuously measure and improve model performance, latency, and cost-efficiency.
• Stay on the Bleeding Edge: Rapidly prototype and evaluate new foundational models, open-source frameworks, and embedding techniques to keep Lightbringer at the absolute forefront of LegalTech AI.

Who you are

• Production AI Experience: You have a proven track record of shipping LLM-powered applications into production, deeply understanding the nuances of prompt engineering, semantic search, and context window management.
• Strong Software Engineering Fundamentals: You write clean, modular, and maintainable code (primarily Python) and understand how to integrate AI services into a broader SaaS architecture.
• Problem Solver: You love digging into complex, abstract problems. Legal tech and patent law are highly structural—you excel at converting this rigid logic into programmatic AI guardrails.
• Startup Mindset: You are self-driven, comfortable with rapid iteration, and excited to have a massive, visible impact on the core company product.

What we offer

• The chance to build complex AI systems from scratch in a high-stakes domain where AI isn't just an add-on, but the core product.
• A highly collaborative, energetic team culture where product execution and technical excellence are deeply valued.
• You'll be a part of a team of software engineers, design and patent experts, working together to build the IP platform of the future
• A stunning office environment in Varvsstaden (Malmö) surrounded by history and innovation.
• Competitive salary, equity opportunities, and modern tech equipment.