ReBloom
Product Engineer - ReBloom - London
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About ReBloom
ReBloom is an AI-native fintech platform headquartered in Copenhagen, building the leading technology infrastructure for private market secondary transactions bringing public market sophistication like Dark Pools, IOI matching, and AI-powered Order Management Systems to private secondaries. Our institutional clients include some of the most prominent names in pre-IPO tech. We are profitable, our pipeline is compounding, and we are now building the team to match our momentum.
The Opportunity
We're looking for a Product Engineer to help build ReBloom's platform from the inside out. In this role you'll be in the room as we figure out what to build next, translating a fast-moving product vision into shipped software, and shaping that vision in return. You'll work fullstack across our platform and our AI infrastructure, with direct exposure to the founding team and real influence over direction. This is a role for someone who wants to build a company, not just write code for one.
What You'll Do
- Ship fullstack features across ReBloom's core platform from database and API work to the interfaces our institutional clients use daily
- Work directly with the founding team to turn product ideas into working software, iterating quickly as the vision evolves
- Build and extend our AI tooling of agents, retrieval, and workflows using our stack (Langchain, MCP, and related tools) that power features like the AI enabled Order Management System.
- Own infrastructure decisions across AWS and Vercel, balancing speed with reliability as we scale
- Bring product judgment, not just implementation. Have a mentality of iterating fast and adjust when something doesn't serve the client or the business
- Move fluidly between building, debugging, and thinking about what we should build next
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What We're Looking For
- 3–5 years of fullstack engineering experience, comfortable owning a feature end-to-end.
- Someone that has been hands on in building a product early
- Working knowledge of AWS, Vercel, and modern AI application tooling (Langchain, MCP, or equivalent). You don't need expertise in all of them, but you should be conversant and eager to go deeper
- Entrepreneurial spirit - you want significant influence over what gets built and why, not just a backlog to execute against
- Comfortable in a startup environment: fewer processes, more ownership, and the expectation that you'll help define how things get done
- Strong product instincts - you can sit with an institutional user problem and help shape it into something buildable
- A genuine interest in what ReBloom is building and the private markets space, not just the tech stack
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Strong Advantages
- Prior startup experience, especially in fintech
- Hands-on experience with modern AI tech stacks (Langchain, Llamaindex, Langfuse, vector databases, Vercel)
- Experience building and deploying production-grade APIs in cloud environments
- A strong curiosity and willingness to learn about private markets and financial technology
What We Offer
- Competitive salary with significant room to grow your own role and compensation reflecting the impact of the role.
- Direct, high-touch partnership with the founding team where your input shapes both product and technical direction.
- A rare seat at the table shaping an entire industry in a rapidly growing market, not just a product.
- A high-ownership role in a profitable, fast-growing company with real client traction.
If you want to build, not just execute, we want to hear from you. Send a brief note and your CV to db@rebloom.ai.
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