Bridgetree Technologies
Industries

Where software is the business.

We work in domains where reliability is a regulatory question, latency is a commercial one, and a wrong architectural decision compounds for years. Most of our engagements sit somewhere along the seam between money, code and trust — payments and fintech, blockchain and web3, applied AI, and the regulated environments around them.

Glowing translucent cube representing industry infrastructure.
01 / 05

Payments & Card Schemes

Card schemesAcquiringIssuingPSPs

Authorisation, settlement, reconciliation and dispute systems engineered for low latency, exact accounting and auditable behaviour.

  • ISO 8583 and ISO 20022 message processing
  • Acquirer and issuer core integrations
  • Real-time fraud signals and risk decisioning
  • Reconciliation engines with deterministic settlement
  • Tokenisation and PCI-scope reduction architectures
02 / 05

Blockchain & Web3 Infrastructure

EVML2sCustodyTokenisation

Smart contracts, custody systems, on-chain settlement and the off-chain infrastructure around them — built for correctness, safety and regulator-grade observability.

  • EVM smart contracts with property-based and invariant testing (Foundry)
  • Multi-chain custody, key management and signing infrastructure
  • Indexers, subgraphs and event-driven on-chain data pipelines
  • Tokenisation, stablecoin and real-world-asset settlement systems
  • MiCA / VARA-aligned audit trails and operational evidence
03 / 05

Fintech & Embedded Finance

NeobanksWalletsEmbedded financeAPIs

Engineering depth for fintech operators who have outgrown their original stack — and embedded finance platforms exposing capability through APIs.

  • API platform design and partner onboarding flows
  • High-throughput event-driven backbones
  • Multi-tenant architectures and data isolation
  • Webhook delivery, retry and replay infrastructure
  • Migration from monolith to bounded services
04 / 05

Applied AI & Data Products

LLMsRAGEvalsAgents

LLM applications, retrieval and agent systems engineered like production infrastructure — measured, observable, cost-controlled, and safe to put in front of customers.

  • Production-grade RAG with hybrid retrieval and citation enforcement
  • Evaluation harnesses, regression suites and guardrails for LLM output
  • Agentic workflows with tool-use, sandboxing and human-in-the-loop checkpoints
  • Vector and analytical data pipelines (pgvector, ClickHouse, lakehouse)
  • Per-query cost, latency and quality telemetry
05 / 05

Regulated Technology Operators

EMI / PIMiCAVARALending

Systems built to satisfy operational, prudential and conduct-of-business requirements — and to demonstrate that satisfaction to auditors and regulators.

  • Audit-grade event sourcing and immutable logs
  • Segregation of duties, RBAC and approval workflows
  • Data residency, encryption and key-management design
  • Business continuity, DR and RTO/RPO engineering
  • Evidence packages for licensing and audit cycles
Posture

Built to be audited.

We design systems on the assumption that an auditor, a regulator, a card scheme or an external security reviewer will eventually look closely at how they behave. That assumption changes the engineering — for the better.

Evidence by design
Every state change is observable, attributable and replayable.
Least privilege, end-to-end
RBAC, segregation of duties and approval workflows in the architecture, not bolted on.
Provable behaviour
Property-based tests, contract tests and load tests as first-class artefacts.
Operational continuity
Documented RTO / RPO, tested DR, runbooks owned by the engineers who built the system.

Working in one of these spaces?

Tell us about the system. We'll respond with whether it's a fit, who would be involved, and how we'd approach the first 30 days.