FoundryOS Tech Stack

Cloud platform for launching financial services without legacy constraints

Financial Services London, England 11–50 employees Founded 2018 Privately Held

FoundryOS operates a SaaS platform built on Kotlin, Kafka, and GCP that lets fintechs and banks launch financial products without rebuilding core infrastructure. The tech stack—Kafka for event streaming, PostgreSQL + Kafka for transactional durability, gRPC for service boundaries, and Kubernetes for deployment—reflects a microservices-first architecture designed for regulatory complexity. Hiring skews senior (6 of 13 roles) across engineering and data, paired with active projects in ledger modeling, asset lifecycle, and ML capabilities, suggesting FoundryOS is scaling toward a platform that handles multi-asset reconciliation and compliance at runtime rather than bolting it on post-launch.

Tech Stack 14 technologies

Core StackKotlin Docker Kubernetes PostgreSQL Kafka Grafana Prometheus gRPC Arrow Ktor GCP Concourse Jaeger Azure

What FoundryOS Is Building

◆Challenges

Zero-to-one function building
Building support function from ground up
Improving support processes
Regulatory change
Managing dependencies
Complex asset reconciliation across multiple systems
Managing technical risks
Ensuring secure data-as-a-product solutions
Reconcile assets across brokers
Ensure compliant asset movement

▲Active Projects

Zero-to-one function building
Build data platform
New product features development
Product delivery frameworks
Core data platform development
Leadership frameworks development
Engineering performance systems
Ai and ml capabilities
Accounts and asset lifecycle management
Ledger modeling for asset states

Hiring Activity

Steady15 roles · 5 in 30d

Department

Engineering

Data

Product

Support

Seniority

Senior

Lead

Mid

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About FoundryOS

FoundryOS is a SaaS platform enabling financial services companies to launch and scale products faster by providing modular, configurable building blocks instead of forcing vendor lock-in or legacy rewrites. Founded in 2018 by leaders with experience building digital and challenger banks, the company serves fintechs, banks, and wealth-tech firms across the United Kingdom. The platform architecture uses event streams (Kafka), relational persistence (PostgreSQL), and service meshes (gRPC, Kubernetes) to handle accounts, assets, and ledger states across multiple brokers and custodians. Current focus includes core data platform development, asset reconciliation tooling, and compliance automation—operational areas that reflect the regulatory and operational complexity baked into financial services infrastructure.

HeadquartersLondon, England

Company Size11–50 employees

Founded2018

Hiring MarketsUnited Kingdom

Frequently Asked Questions

What tech stack does FoundryOS use?

Kotlin, Ktor, Kafka, PostgreSQL, GCP, Kubernetes, Docker, gRPC, Prometheus, Grafana, Jaeger, and Arrow. The stack emphasizes event streaming, containerized microservices, and observability.

What is FoundryOS building?

A data platform, ledger modeling for asset states, asset lifecycle management, AI/ML capabilities, and product delivery frameworks. Current pain points include complex asset reconciliation and regulatory compliance automation.