
Upvest: Building the financial infrastructure of tomorrow
Berlin-based Upvest's API empowers businesses to offer great investment experiences, tailored to customers’ needs.
Project description
As one of the hundred fastest-growing startups in Germany, Upvest wanted their product to be on par with their business success; to avoid losing time on development, they would need a partner who could support their existing solution while rebuilding it as a scalable, cutting-edge application.
Competing against dozens of other vendors, we were able to place two of our Golang engineers initially. This engagement turned into a successful long-term relationship with Upvest, extending to more engineers and other domains (e.g. Backoffice operations with TypeScript/Go).
Our initial responsibility was the 2.0 version of their B2B platform, building from scratch to allow users to buy and sell shares, fractional investments, and much more. Upvest also relied on our long-standing partnership with Google Cloud to improve infrastructure security, monitoring, and elasticity, which, in turn, accelerated feature deployment and elevated the customer experience.
Over time, Vention turned into a reliable partner supporting the scaling of the business, integrating new technologies like AI and generally moving faster without compromising quality.
Vention engineers also bring their expertise to architecture decisions for continued scaling.

Key metric | Details |
|---|---|
Partnership duration | 4 years of active engagement |
Team scaling | 2x team growth within the first two months |
Business growth supported | Engagement from Series A to Series C, with over 200M raised |
The result
Through a combination of architectural improvements, process optimization, and continuous feature development, Vention helped Upvest build a scalable, compliant, and future-ready investment platform.
The results include:
- A redesigned application architecture built on clean, well-structured Go microservices, improving maintainability, scalability, and overall system clarity.
- Streamlined development processes supported by new services for user authorization, activity monitoring, and customizable email templates, enabling faster and more consistent delivery.
- Stable, well-organized workflows and a robust architecture, enhanced by Claude AI, which supported faster feature delivery while maintaining long-term system integrity.
- Ongoing expansion of the public API and rollout of new features, including detailed tax breakdowns per transaction and support for child accounts, increasing flexibility and transparency.
- A reliable, scalable investment API fully compliant with key European regulations, including FATCA, MiFID, AMLD5, and KYC requirements.
- Accelerated business momentum, contributing to a successful Series C with over $200M.
- A strong foundation for continued optimization, with plans to leverage Kubernetes tooling to further improve deployment speed and operational efficiency.
Looking ahead, the partnership between Upvest and Vention continues to evolve, with the client expanding the team to support the next stage of their roadmap.
Tools & technologies
Backend
Golang
Frontend
React
TypeScript
GenAI
Claude Code
Other technologies
Postgresql
RabbitMQ
Vault
Comply-Advantage
Kubernetes
GCP



