Custom web apps, client portals, dashboards, onboarding flows, and financial services websites for fintech companies. From $799, fixed quotes, remote-first since 2015.
Updated · Written by Habib Ahmed, founder and lead developer
Fintech software development services cover the design and build of digital products that move, store, or manage money: banking apps, payment systems, digital wallets, lending platforms, and trading tools. Websloop works the web side of that world: custom web applications, client dashboards and portals, onboarding flows, and marketing websites for fintech companies, built with security-conscious practices and honest scoping about what we do not do.
Here is the line most pages in this space will not draw for you. A fintech product has two layers: the regulated core (banking systems, trading engines, native apps, certified compliance work) and the web layer around it (the site that wins customers, the portal they log into, the dashboard that shows their data, the onboarding flow that converts signups). We build the second layer, properly, and that is the use case a web agency should own in fintech. When your project needs the first, we say so before you spend anything, which is exactly what a development partner should do.
Ask five firms what fintech software development services means and you get five answers, because the term spans everything from a marketing site to a trading engine. The full picture: custom software for financial products, client-facing apps and web platforms, payment processing systems, lending and underwriting tools, trading software, data analytics and risk systems, digital wallets, insurance platforms, and the compliance machinery around all of it. Enterprise software houses sell the whole stack, and for a regulated product that is the right call.
Our slice is the web layer, and it is bigger than it sounds. Fintech companies live or die on trust and conversion: the marketing site has to read as credible in seconds, the onboarding flow has to convert without leaking users, the client portal has to work flawlessly on a phone. That is professional web development services work, and it is where we have spent 10+ years and 150+ projects. See our custom application development services for the full picture of what we build.
The honest scope, in writing, before you ever talk to us. If your project sits on the left, we are the right firm. If it sits on the right, we will tell you and point you toward the right kind of firm, because building it badly would be worse than not building it. Every fintech company needs both product and web-layer solutions; the mistake is hiring one firm for both jobs.
We build
A software house builds
A fintech website or web app handles sensitive data by definition, so security is not a line item with us, it is the default. Every project ships with HTTPS everywhere, secure authentication with properly hashed credentials, careful session handling, encrypted data in transit, least-privilege access to admin areas, and deliberate handling of sensitive fields. Actual money movement goes through certified third-party payment providers, never through code that stores card numbers on your server. Hosting is hardened on cloud infrastructure you control, updates and backups run on a schedule, and the architecture is documented so a future audit can follow it.
What we will not do is dress these practices up as certifications. We do not hold SOC 2 or PCI-DSS certification, and we never present our work as certified compliance. In a space where some agencies imply exactly that, the restraint is the trust signal. If your product needs certified compliance work, that is a software house engagement, and we name it before you spend anything. Our website design services page covers how this discipline carries across everything we build.
The web layer, done properly: web apps, portals, onboarding, sites, integrations, and the security practices under all of it. One team, one fixed quote.
Client dashboards, customer portals, admin panels, and internal tools, built as web apps that run in any browser. Custom application development services are scoped the same honest way as everything else: fixed quote, defined deliverables, you own the code. If a web app is not the right answer for what you need, we say that before you spend anything.
HTTPS everywhere, secure authentication, encrypted data in transit, least-privilege admin access, careful handling of sensitive fields, and hosting hardening. These are practices we follow on every fintech project, described exactly as that. No certification claims, no security theater, and an honest conversation before you build about which parts of your product need certified compliance work from a software house.
Subscription web apps for fintech products: signup and onboarding, plan management, billing through third-party providers, and usage dashboards. SaaS application development services at our scale means your product's web layer, designed to convert trials and keep customers, built by a team that understands both the product and the marketing site behind it.
Marketing websites for fintech companies: product pages, pricing pages, comparison content, trust signals, and the compliance-adjacent content sections investors and customers expect. Financial services website design has to read as credible fast, because visitors decide in seconds whether to trust a company with their money. We design for that decision.
Custom CMS development services when your fintech content needs more than a standard setup: structured product content, help centers, rate and fee pages that update cleanly, multi-region content. WordPress is available where it fits, with custom themes rather than bloated page-builder stacks, so the site stays fast and your team can edit without calling a developer.
Multi-step signup, document upload, and account setup flows that turn visitors into users. Identity verification is plugged in through specialist third-party providers, integrated into your flow, because KYC checks belong with companies that do nothing else. The result is onboarding that converts without your team touching identity infrastructure.
Payment gateways, banking APIs, CRMs, email and analytics platforms, webhooks, and custom APIs, wired into your site or web app. Professional web development services at the integration layer mean the money movement stays with certified providers while your site or app presents it cleanly, so payments clear through infrastructure built for them. The architecture is documented, so you always know where data lives and who handles what.
Google measures how fast your main content appears (LCP), how quickly the page responds (INP), and how stable the layout is (CLS), and slow fintech sites lose signups before the first form field. Speed work is baked into every build, SEO foundations ship with every site, and care plans from $99 a month cover updates, backups, and monitoring after launch.
Fixed prices for the web layer, agreed in writing before work starts. Custom web applications are quoted fixed per project. A full regulated fintech platform is a different engagement, and we will not quote you as if it were ours.
Website Starter
$799
Built for a new or small contractor business that needs a real website instead of just a Facebook page.
Website Professional
$1,499
Sized for growing roofing, plumbing and construction companies that need a custom site built to bring in calls and quote requests.
Website Enterprise
$2,499+
Established contractors that need service-area pages, several locations, or custom features like estimate tools start here.
For context, enterprise fintech software houses publish MVP ranges starting around $30,000 for a full platform build. Our work is the web layer around the product, not the regulated core, which is why our numbers look different. Care plans are separate and optional: $99, $199, or $399 a month. Full breakdown on our pricing page.
Who we are not for: Not the right fit if you need a trading platform, core banking system, or certified compliance work. We build the website, the client portals, and the dashboards around your fintech product; we do not hold SOC 2 or PCI-DSS certifications and we do not manage ad spend.
01
Discovery and a fixed quote
We learn what the web app or site must do: who it is for, what action visitors should take, which third parties will handle money and identity, and what is broken about the current setup. Regulatory and compliance-adjacent requirements get flagged early, not discovered at launch. If you have an in-house team, we work alongside them through your fintech software development project: a shared board, weekly updates, and direct access to the developer writing your code. You get a fixed quote in writing with exactly what is included, the delivery window, and the price.
02
Design and architecture
Wireframes and interface designs you approve, built around your product and your buyers. Underneath, the architecture decisions get documented: where data lives, which APIs and gateways are involved, how authentication works. For fintech web work, this documentation is part of the deliverable, because your future team needs to audit it.
03
Build and security checks
Development in iterations on the approved design: clean code, responsive on every screen size, authentication and access reviewed as we go, forms and flows tested, third-party integrations tested end to end. We test on real phones and browsers, fix what breaks, and walk you through the app before it goes live.
04
Launch and ongoing support
Careful launch with monitoring in place, so issues surface fast. Then post-launch support (15 to 90 days depending on package) while everything settles, and optional care plans after that. The code, the site, the architecture docs, and the logins are all in your name from day one.
Most agencies either pretend fintech is just another website or pretend they can build your banking core. We do neither. The honest scope on this page is the scope we work to: the web layer, done properly, with a public statement of what belongs at a software house. That honesty is why fintech founders keep referring us.
We follow real security practices on every fintech project and we list them instead of hiding behind vague claims. Just as important is what we refuse to claim: no SOC 2, no PCI-DSS, no compliance certifications we do not hold. In a regulated-adjacent space, that restraint is the trust signal.
Almost nobody in this space publishes prices. We do, down to the dollar, because a founder comparing fintech software development services deserves numbers before a sales call. Our web builds start at $799 and custom web apps are fixed-quote in writing. The quote you sign matches the price on the pricing page, line for line.
The site, the code, the web app, the architecture documentation, the content, the domain, the logins, all in your name from day one, written into the agreement. If you ever leave, everything goes with you, and your next developer can pick it up from the docs. Do not sign with any development company if cancellation means losing your own product.
Selling online too? Our e-commerce website design services cover payment-ready storefronts, and once the fintech site is live, website design and SEO services take it from found to ranking. For the broader picture, see our business web design services.
Tell us what you are building. We will give you a fixed price in writing, usually within one business day, and an honest answer on whether the web layer is what you need, or whether you need a software house first.
What fintech companies ask most before hiring for web work: what is covered, cost ranges, timelines, mobile apps, security practices, API and payment integrations, startups, software houses, post-launch support, and SEO.
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Building client websites since 2015
Sources last checked 14 August 2026. Outside figures used on this page are listed here with their source, so you can check them yourself instead of taking our word for it.
Google treats a page as fast on three measures. Largest Contentful Paint under 2.5 seconds, Interaction to Next Paint under 200 milliseconds, and Cumulative Layout Shift under 0.1. All three are read at the 75th percentile of real page loads.
“LCP should occur within 2.5 seconds of when the page first starts loading.”