Yezo Fintech · London
We design and build production software — platforms, integrations, onboarding journeys and ops tooling — and advise engineering teams on architecture and delivery. Not financial advice. Not financial management consultancy.
// registered activities
Software development
IT consultancy
Management consultancy
Professional & technical
01What we are engaged for
Every engagement maps to one of the activities Yezo Fintech is registered to carry out. We tell you which one you're buying, and what leaves the building at the end of it.
// how we engage
We connect the thinking and the making.
Senior engineers only. Written findings. Production from the first increment — mapped to a registered activity you can name.
01
Technology
Business and domestic software development
Product platforms, transaction and ledger services, onboarding journeys, reconciliation tooling and back-office UIs — built for production, not as prototypes.
02
Consultancy
Information technology consultancy activities
Architecture reviews, integration strategy, platform and data decisions, and build-versus-buy calls for engineering teams.
03
Operations
Management consultancy activities other than financial management
Operating models, vendor selection, delivery organisation design, product roadmaps and process redesign — excluding financial management consultancy.
04
Enablement
Other professional, scientific and technical activities not elsewhere classified
Technical due diligence, screening-vendor integration, reporting and data engineering, documentation and specification work.
02Practice detail
No open-ended retainers by default. Each line below is a scoped piece of work with a named deliverable.
01
// technology
Business and domestic software development
We take complex product systems from architecture to production. That means the load-bearing parts: idempotent APIs, durable data models, reconciliation views that close, and an audit trail that still answers questions a year later. We work inside your repo, your review process and your operational constraints.
02
// consultancy
Information technology consultancy activities
A short, intense read of your platform, then a written recommendation you can act on — not a slide deck. We look at where the data sits, how systems integrate, what breaks under volume, and what a technical due-diligence review would ask first. You get findings, a target architecture and a sequenced plan.
03
// operations
Management consultancy activities other than financial management
The organisational half of delivery. How work is specified, who decides, how releases happen, which vendor does what, and how the operations team runs day to day. This is management, process and delivery consultancy only — not financial management, investment advice or regulated financial advisory.
04
// enablement
Other professional, scientific and technical activities not elsewhere classified
Specialist technical work alongside delivery: a due-diligence pack before a raise, integrating a screening vendor, a reporting pipeline operations needs, or the specification that lets a third party build the right thing.
03 · engineering standards
These aren't preferences. In production transaction systems each one is the difference between a bad afternoon and a costly incident, so they're in scope by default.
04Where we work
These are contexts for engineering work — not financial products we advise on, and not financial management consultancy.
05How we work
Week markers below are the shape of a typical build engagement. Consultancy-only work usually stops at Blueprint.
01
Week 0–1
Code and architecture read, stakeholder interviews, and an end-to-end look at the system path. Output is written findings — the real bottleneck, not the symptom.
You leave with — Written findings ranked by the real bottleneck.
02
Week 2
Target architecture, data model, delivery plan, risks and a cost envelope. Enough detail that another team could build it.
You leave with — Target architecture, delivery plan and cost envelope.
03
Week 3–10
Two-week increments against your review process. Something reaches production in the first increment. Demo every second Friday, no exceptions.
You leave with — Working increments in production, demo every second Friday.
04
Week 10+
Runbooks, architecture decision records, on-call walkthrough and paired sessions until your team owns it. Retained capacity if you want it.
You leave with — Runbooks, ADRs and a team that owns the system.
06Representative engagements
Described by problem shape rather than client name — most of this work sits under NDA.
// payment platforms
A payouts product outgrew its single provider. We built a routing and retry layer with idempotency keys, per-corridor fallback and a reconciliation view that gives ops one consistent picture across three ledgers.
// lending platforms
A credit platform needed to know what an acquirer's technical team would find. Two weeks of review, written findings ranked by remediation cost, and a sequenced plan the CTO used as the engineering roadmap.
// compliance tech
Replaced a manual review queue with an integrated screening pipeline: vendor evaluation, sandbox integration, case-management UI, and an audit trail that maps each decision to the rule that produced it.
// delivery org
Twelve engineers, no release cadence and a roadmap nobody trusted. We designed the delivery model, defined the roles, rebuilt the intake process and stayed through the first three cycles.
Engagement notes are illustrative of scope and approach. Named references available under NDA on request.
// london
Got a problem that cannot wait?
07 Contact
Send a short note — the system, the constraint and the deadline is plenty. You'll get a reply from an engineer within one working day, with how we'd approach it and whether we're the right people for it.
info@yezofintech.com →Or use the form — messages go to our inbox via Brevo.