Bridgetree builds high-performance software for frontier technology - specializing in trading and liquidity infrastructure, AI, blockchain systems. Scalable, reliable, and built to last.
Deep specialism across payments infrastructure, on-chain settlement, applied-AI systems, and audit-grade platforms.
We work across the lifecycle of high-stakes software — foundational architecture, bespoke build, and the unglamorous reliability work that turns systems already in production into infrastructure you can build on.
Full servicesArchitecture design, system strategy and principal-level technical advisory across payments, blockchain, web3 and AI — for organisations that cannot afford to get foundational decisions wrong.
Backend systems, APIs, ledgers, smart contracts, AI pipelines and the infrastructure that supports them — engineered for correctness and operational longevity.
Performance, reliability and refactoring work that turns fragile systems into infrastructure your business can build on with confidence.
Most of our work sits along the seam between money, data and trust — domains where reliability is a regulatory question and a wrong architectural call compounds for years.
Explore industriesAuthorisation, settlement, reconciliation, dispute systems.
Smart contracts, on-chain infra, custody, tokenisation.
API platforms, multi-tenant cores, partner onboarding.
LLM applications, RAG pipelines, evaluation, model ops.
Audit-grade systems for licensed operators.
Numbers are easy to print and hard to live up to. These are budgets we hold ourselves to on the systems we design, build and operate — not marketing claims.
Engagements are run by the people who do the work. Communication is direct. Decisions are written down. Outcomes are measured.
Every engagement starts with a clear-eyed view of the system, the constraints and the real objective. We turn things down when the diagnosis says we should.
We optimise for systems that survive change — observable, testable, well-bounded, boring in the right places.
Working software in production is the only meaningful artefact. Decks and diagrams support that, they don't replace it.
We design engagements to end. The team you keep should be more capable on the day we leave than the day we arrived.
We pick tools to fit the problem. These are the ones we reach for most often — and the protocols and standards we work in fluently.
Most of our engagements are covered by NDA. The patterns below are anonymised summaries of recurring engagement shapes — useful as reference points for the kind of work we take on.
Re-architected a payment authorisation path from a synchronous monolith to an event-driven core with explicit idempotency and replay. Hot-path p99 reduced from 180ms to 65ms; reconciliation discrepancies down ~95%.
Designed and shipped a key-management and settlement service across EVM and L2 networks, with deterministic accounting, signed-message provenance and an audit-grade query model. Went live carrying real customer balances on day one.
Built an evaluation-driven LLM application with hybrid retrieval, citation enforcement and per-query cost telemetry. Hallucination rate cut by an order of magnitude versus the in-house baseline; inference cost reduced ~60%.
Independent technical review of architecture, security posture, BCP/DR and operational evidence ahead of regulator submission. Delivered a prioritised remediation plan that supported a successful authorisation cycle.
Detailed references available under NDA on request.
“The difference between adequate and excellent engineering is measured in incidents avoided, not features shipped — and in whether you can prove, on a Tuesday afternoon, exactly what your system did at 2am on Sunday.”
We take on a focused number of engagements at a time. Tell us what you're building, scaling, or trying to fix — a principal engineer will respond within one business day.
