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Fintech Product Design & Development

We design and build the parts of a fintech product where money changes hands: onboarding, identity checks, funding, payments and every state in between. Products rarely lose people on the happy path. They lose them in the states nobody drew, which is why we draw those first.

Trusted by engineering teams.

brand logo for cardb: a yellow diamond icon with a stylized mark, followed by the word 'cardb' in yellow.
midland first bank logo.
reflect logo with white lowercase letters on a dark background
nasdaq logo: blue stylized 'n' mark followed by gray 'nasdaq' text.
amitipi logo: blue triangle icon next to the word 'mitipi' in blue text.
iress company logo
market access digit logo with a stylized left graphic and the text 'market access digit'
ecoblock logo: blue square icon with a green outline/overlay and the word ecoblock in green and blue.
velory wordmark logo in gray lowercase letters with a small underline under the 'velo' portion
osl company logo
neopenda logo: teal circle with a blue waveform and the word neopenda in blue lowercase letters.
garrison flood control logo
brand logo for cardb: a yellow diamond icon with a stylized mark, followed by the word 'cardb' in yellow.
midland first bank logo.
reflect logo with white lowercase letters on a dark background
nasdaq logo: blue stylized 'n' mark followed by gray 'nasdaq' text.
amitipi logo: blue triangle icon next to the word 'mitipi' in blue text.
iress company logo
market access digit logo with a stylized left graphic and the text 'market access digit'
ecoblock logo: blue square icon with a green outline/overlay and the word ecoblock in green and blue.
velory wordmark logo in gray lowercase letters with a small underline under the 'velo' portion
osl company logo
neopenda logo: teal circle with a blue waveform and the word neopenda in blue lowercase letters.
garrison flood control logo

Teamvoy has delivered engineering work for Nasdaq, Panasonic, Afriland First Bank, and 50+ other companies since 2013.

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Fintech Product Design & Development Services We Offer

Six offerings, each scoped separately and each shipped against your own rails, partners and customers rather than a prototype.

Product Discovery and Flow Design

We map the path from first open to first funded transaction, then write down every state it can be in, including refer, pending, partially funded and reversed. That state list is the deliverable that survives into the build, because it is what engineers implement and what support reads at three in the morning.

Onboarding and KYC Experience

We design and build account opening against your provider: document capture, liveness, screening outcomes and manual review. Refer and pending get their own screens and their own data model, so a customer waiting on a check can be moved forward by an agent instead of starting again.

Mobile and Web Application Build

Native and React Native mobile alongside the web application, with offline states, background refresh and step-up authentication built into the first release rather than retrofitted. Session and device handling is written against your SCA obligations instead of around them.

Payments and Money Movement

We build the money path against your rails and partner: initiation, limits, fraud step-up, submission and the status the customer actually sees. Webhook handling is ordered and idempotent, so a duplicated or late callback cannot move a settled payment back to pending.

Design System and Accessibility

One component library shared by design and code, carrying the money components generic kits do not have: amount entry, currency switching, transaction states, mandate and consent screens. Accessibility is tested on device with a screen reader against WCAG 2.2 AA, not by a plugin score.

Analytics, Experimentation and Support Tooling

Event schemas, funnels and experiment infrastructure go in with the feature rather than after it, and the agent console is treated as a product with its own design. Support sees the event sequence behind the customer screen, which is what turns a complaint into a short answer.

Fintech Product Success Stories

Check out our product and experience design case studies. Learn how we’ve helped businesses like yours launch stunning solutions and succeed in target markets.

One new customer, seven layers

On the roadmap it is one sign-up. Underneath it is seven handovers between your app, your partners and your ledger, and each one has states the happy path never shows.

Seven layers:

01. App entry and onboarding start
A person arrives from a store listing, a deep link or a web page, and a session, a device record and a partial application come into existence before anything is verified.
Breaks when onboarding is resumable in the design but not in the data, so someone who closes the app at step four comes back to step one and does not come back again.
02. Identity and eligibility
Document capture, liveness, sanctions and PEP screening and eligibility rules run against your provider, and each returns an outcome the product has to hold.
Breaks when a check returns refer rather than pass or fail and the flow has no state for it, so a real customer sits in limbo and no agent has a screen to move them from.
03. Account and ledger creation
An account is opened with the partner or core, an entry is written to the ledger, and identifiers, limits and entitlements are assigned.
Breaks when the partner call succeeds, the local write fails, and the retry carries no idempotency key, so the customer ends up with two accounts and one of them holds money.
04. Funding
The first money arrives by open banking initiation, card top-up or inbound transfer, and it settles on a timeline the interface has to represent honestly.
Breaks when the balance is served from a local cache after card authorisation but before settlement, so a customer spends against funds that later fail to settle.
05. Money movement
A payment is initiated, checked against limits, scored for fraud, sometimes stepped up for authentication, then submitted to the rail.
Breaks when the step-up fires after the interface has already shown success, so the customer reads confirmation and then a hold, and support hears about it first.
06. Status, notifications and reconciliation
Callbacks return from processors and partners, are retried and occasionally duplicated, and drive both the customer notification and the internal reconciliation.
Breaks when callbacks arrive out of order and a stale earlier state overwrites the terminal one, so a settled payment reverts to pending on the customer screen.
07. Support, dispute and the record
An agent opens the case, reads what happened, answers the customer, and the exchange becomes part of the complaint and dispute record.
Breaks when the console shows current state but not the sequence of events, so nobody can tell the customer why the payment failed rather than that it failed.

Why choose Teamvoy for fintech product design and development?

Four commitments, each with the thing it costs us to hold to it. In a regulated product the trade-offs a team accepts matter more than the screens in its portfolio.

01 • 04

The engineers who scope the work build the work.

No handover from a pre-sales team to a delivery team. The person who tells you what the work will cost is the person who then has to make that estimate true.

Costs us: we cannot start faster than we can staff, so we turn down work that needs a squad this month.

02 • 04

You own the source code from the first commit.

The repository is yours, in your organisation, from day one. Not transferred at the end, not held until the final invoice clears.

Costs us: we give up the lock-in that comes from holding a repository, so we have to be re-chosen every quarter.

03 • 04

We design the failure states before the happy path.

Refer, pending, partially funded, reversed, stepped up, timed out. Each one gets a screen, a copy deck and a place in the data model, because those are the states your support queue is actually made of.

Costs us: the first design review is a list of edge cases rather than a hero screen, and we lose pitches to prettier decks.

04 • 04

Compliance sits in the design review, not at the end of it.

Your compliance lead sees flows while they are still cheap to change, and the constraint is recorded next to the screen it shaped rather than in a separate document nobody opens.

Costs us: design cycles run slower, and we sometimes redraw a flow we have already shown you and were pleased with.

FIXED PRICE

Onboarding and flow audit

We walk your live flow as a customer would, annotate every drop-off point and list the states the product does not currently handle, with the analytics to show which ones cost you most. You keep the map whether or not we build anything.

PAID – FIXED SCOPE

One flow designed, built and instrumented

One flow, usually onboarding or first payment, taken from state map to a release in your environment with the events, the failure screens and the agent view that go with it. Built so your team can carry the next flow themselves.

NO SALES PROCESS

A call with the designer and engineer who would scope it

Bring the flow you worry about, the partners behind it and the step where people stop. You get an honest read on what is a design problem and what is a data problem, and no follow-up sequence.

TOPIC
OTHER FINTECH PRODUCT VENDORS
TEAMVOY
Failure states
Drawn after the build, when QA finds them.
Written into the flow map before the first screen is designed.
Compliance input
A review gate shortly before launch.
In the weekly design review, with the constraint recorded next to the screen it shaped.
Design handover
A Figma file and a walkthrough call.
A component library in code, on the same tokens the designers work in.
Accessibility
An automated plugin check near release.
Tested on device with a screen reader every release, against WCAG 2.2 AA.
Support and back office
Out of scope, added after launch.
Scoped with the customer-facing product, because much of the real cost lives there.
Source code
Transferred at project close, if requested.
Yours from the first commit.
Repository and CI
In the vendor organisation, exported as an archive.
In your organisation, on your accounts.
Documentation
Assembled at handover.
Written in the repository as the code is written.
Handover
A knowledge-transfer phase at the end.
Continuous. Your team commits alongside ours.
Exit
Notice period plus transition costs.
30 days notice, no exit fee, nothing to reclaim.
two coworkers focus on a laptop screen in a modern office, with a woman in the foreground resting her chin on clasped hands while a man looks on.

Do you know where your onboarding

actually loses people?

We engineer for:

PSD2 and strong customer authentication under the RTS
Open banking standards for account information and payment initiation
FCA Consumer Duty outcomes and financial promotions rules
GDPR and data minimisation in onboarding
PCI DSS for card data handling
WCAG 2.2 AA and the European Accessibility Act
EU AI Act obligations where creditworthiness is assessed by a model
DORA operational resilience
Reg E and Nacha rules for US programmes
ISO 27001 and SOC 2 controls

What our fintech product designers and engineers work in.

Design and research

Mobile and web

Services and data

Fintech systems we integrate with

Analytics and experimentation

Run, evidence and controls

Send us the flow you worry about, the partners behind it and the step where people stop. We will tell you what is a design problem and what is a data problem before you commit to anything.
PREFER email?
Release date already set?
Response within 2 hours during business hours (CET).
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Bohdan Varshchuk
Chief Technology Officer

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