Fintech software development companies, as listed here, are engineering firms whose own public project pages show financial-product work, such as lending, banking, payments or trading. This list compares public evidence and does not rank them.
Firms that list fintech or banking work
941
With a portfolio entry that looks like fintech work
Which fintech software development companies should you consider?
Start with the 20 companies below. Each links to public pages showing its fintech work, 50 project pages and 1 portfolio index in all, covering payments and cards; investment and trading software; lending and loan management; and 6 other types of work. We publish a full count for 11 of these 20 portfolios: 5% to 78% fintech work.
All 20 at a glance
Most common, at 9 of 20 companies: payments and cardsA square is at least one listed project page of that type, and a number means more than one. Select a column heading to filter the list.
All 20 companies, A to Z, against the types of work their listed project pages show
2 of the 11 portfolios we counted in full are mostly fintech workEach dot is one company: across, the public projects on its portfolio (log scale); up, the share of them that are fintech work. Companies on the same dashed curve have the same number of fintech projects: 5, 10, 20 and 30.
51020501002000%25%50%75%100%5102030half the portfolio↑ Share that is fintech workProjects on the portfolio, log scale →AccelOneAppVerticalsComputoolsLubyMagniseMetasiteMojoTechPragmaSCALOSkillianthoughtbot
All 20 companies, A to Z, with headquarters, delivery locations, the counted share of public projects, case studies read, the most-named standards or methods, and project pages
Who has built the kind of financial product you need?
Look up the type of work closest to your project below. Of the 20 companies on this fintech list, the most common types include payments and cards (9 companies); investment and trading software (7); lending and loan management (6); and mobile and online banking (6).
Payments and cards
Show or hide the companies for Payments and cards
Nine of the 20 companies on this fintech list have a public project in payments and cards.
We read case studies for 10 of the 20 companies on this list, so the other 10 are not covered here. Naming PCI DSS, KYC or AML in a case study does not show that the company meets them. Ask each company which of those responsibilities it would carry on your project, and for a reference. In a random sample of 298 fintech case studies from 200 software firms, 3% name PCI DSS and 7% name KYC or AML.
Where do these companies deliver from?
12 of the 20 companies on this fintech list publish an office or delivery location in the United States. Other locations published most often are Poland (3), the United Kingdom (3) and Ukraine (2). 8 of the 20 publish more than one location.
Central and Eastern Europe
Show or hide the companies for Central and Eastern Europe
Five of the 20 companies on this fintech list deliver from Central and Eastern Europe.
For a US buyer this is offshore work, with working hours far from US ones, so ask which hours the team keeps in common with yours.
What has each company published about its fintech work?
Each profile links the public pages that show the company's fintech work, with the date we captured each one, and says where the company may fit and what to check before hiring it. The 20 profiles run A to Z. Search or filter to narrow them.
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Rates are not listed, because few companies publish current terms.
14%4 of 28 public projects, counted on its portfolio, Nov 6, 2026
Case studies read
43 say the product is live
Nearshore engineering firm with public fintech work on a DeFi digital lending platform built on AWS, Node.js, and React with periodic security testing.
Modular reconciliation engine matching transactions across banks, crypto exchanges and payment networks, built on AWS with a React front end and Python back end
Project page · captured · Document and back-office systems
Pilot-ready MVP of a credit repair platform with onboarding, subscriptions, dashboard, disputes, pay-to-delete workflows, credit data integration and a credit product marketplace
Project page · captured · Personal finance and financial wellness
Show or hide fit, checks and technology for AccelOne
Where AccelOne may fit
Teams building security-sensitive lending or digital asset products
Companies wanting a nearshore team that includes UX designers
Check before hiring AccelOne
The client is not named, so the project cannot be independently checked
Of AccelOne's 28 public projects, 4 are fintech work, and the three cited are a DeFi lending platform, a crypto reconciliation engine and a credit repair MVP, so ask which of the four the proposed team delivered.
Digital banking for Banco Azteca, a US wallet for Elektra, banking core integration, card issuance and personal financial management features
Project page · captured · Mobile and online banking
Show or hide fit, checks and technology for Ancient
Where Ancient may fit
US teams seeking nearshore delivery capacity
Programs that need flexible staffing and project delivery
Check before hiring Ancient
Ancient cites two fintech projects, a card-issuance app for a Latin American fintech and digital banking work for Grupo Salinas, so ask for further fintech case studies and who built them.
The Pomelo case covers card issuance; confirm experience with your target workflow and jurisdiction
5%2 of 42 public projects, counted on its portfolio, Nov 6, 2026
Mobile and custom software development firm with public fintech work in a Flutter mobile banking rebuild for a four-state US credit union, integrated with its core banking API.
We have not published a count of this company's whole portfolio, so no share is shown.
Offshore staff augmentation and dedicated-team provider with public fintech work on a financial publisher's investor-matching web application, covering QA and Angular front-end development.
QA, then Angular front-end development and maintenance for ManagementMatch, an investor and manager matching web app (engagement running since October 2017)
Project page · captured · Investment and trading software
Show or hide fit, checks and technology for Arcanys
Where Arcanys may fit
Fintech teams needing dedicated QA and front-end capacity for an existing application
Companies extending an in-house team with offshore engineers
Check before hiring Arcanys
The public case covers QA and front-end staffing on one application, not a full product build
The only fintech project cited is QA and Angular front-end work for a financial publisher, so ask for further fintech case studies and who built them.
We have not published a count of this company's whole portfolio, so no share is shown.
Design-led software company with public financial-product examples in digital banking, accounting, trading, compliance, wallets, and account aggregation.
UX, UI and front-end development for a web accounting platform combining invoicing, bank-feed expense tracking, payment tracking and payroll with automated workflows
Project page · captured · Document and back-office systems
We have not published a count of this company's whole portfolio, so no share is shown.
Chicago custom software consultancy with public fintech work on a financial wellness SaaS platform for employers, covering product strategy, design, and development.
13%13 of 101 public projects, counted on its portfolio, Nov 6, 2026
Case studies read
139 say the product is live
Most-named standards
KYC in 3 case studies, DORA in 2, SOC 2 in 2
Software engineering and IT consulting firm whose public fintech work shows a regional bank's Visa card processing integration and redesigned web and mobile banking interfaces.
Backend, integration and workflow work on a fraud prevention and KYC platform with real-time transaction monitoring, ML fraud scoring, sanctions screening and case management
Project page · captured · Risk, compliance and data governance
We have not published a count of this company's whole portfolio, so no share is shown.
Custom software firm with public banking work: a cloud data governance framework with role-based report access, data masking, and a business glossary, and robotic process automation for a bank's payroll processing and anti-money laundering checks.
Robotic process automation that validates and authorizes payments, escalates issues to human operators and uses NLP on requests, built for payroll processing at a bank
Project page · captured · Document and back-office systems
Robotic process automation for anti-money laundering that validates client transaction data from internal and third-party sources and alerts frontline staff to request KYC documents
Project page · captured · Risk, compliance and data governance
Show or hide fit, checks and technology for DICEUS
Where DICEUS may fit
Banks standardizing reporting and data access controls
Financial institutions building governed data and BI foundations
Check before hiring DICEUS
The three cited bank projects are data governance and process automation work, not core banking delivery
None of the three pages names the client, and the figures on the two automation pages are the firm's own, so ask for references
Its site names one delivery center, in Poland, and says it has delivery centers in three countries without naming the other two, so ask where your team would be based.
We have not published a count of this company's whole portfolio, so no share is shown.
Software engineering firm modernizing legacy platforms and adding AI; its public fintech work is a payment platform re-architecture paired with a machine-learning fraud scoring pipeline.
Migration of an accounting platform to multi-tenant microservices, plus AI expense categorization, bank reconciliation, cash flow forecasting and anomaly detection
Project page · captured · Legacy system modernization
Migration of a .NET trading and portfolio management platform from on-premise servers to AWS microservices, with security remediation, CI/CD and AI transaction anomaly detection
Project page · captured · Legacy system modernization
Show or hide fit, checks and technology for I-Verve
37%15 of 41 public projects, counted on its portfolio, Nov 6, 2026
Case studies read
158 say the product is live
Most-named standards
KYC in 4 case studies, AML in 3
Brazilian software firm whose public fintech work includes a betting e-wallet payments gateway, a cross-border gateway on Pix, Brazil's instant payment system, a US community bank's digital banking platform and a buy-now-pay-later credit platform.
Payments gateway for a Brazilian betting e-wallet supporting Pix, cards, transfers and digital wallets, with machine-learning fraud rules and KYC and AML check automation
Cross-border payments gateway on Pix infrastructure with real-time currency conversion, KYC and AML check automation and machine-learning fraud screening
33%3 of 9 public projects, counted on its portfolio, Nov 6, 2026
Case studies read
31 says the product is live
Most-named standards
AML in 1 case study, KYC in 1
Software development partner for fintech and trading companies; public work includes a forex and stock charting platform, a blockchain trading platform, and an IoT crypto-wallet proof of concept.
75%18 of 24 public projects, counted on its portfolio, Nov 6, 2026
Case studies read
155 say the product is live
Custom software firm with offices in Vilnius and London and public fintech work in a white-label pension self-service platform, instant SEPA payments for a mobile payments company, and a performance benchmarking service for a London investment manager.
Redesigned multi-tenant white-label pension scheme self-service platform with .NET microservices, a headless CMS and a React front end, deployed in the cloud
Project page · captured · Personal finance and financial wellness
Digital service for a London-based investment manager that gives advisors and wealth managers performance benchmarks for portfolios managed in a fiduciary capacity
Project page · captured · Investment and trading software
Show or hide fit, checks and technology for Metasite
Where Metasite may fit
Financial firms rebuilding customer self-service portals that must serve several branded tenants from one platform
Payments and investment firms needing engineering support for a mobile payments launch or a benchmarking service for advisors
Check before hiring Metasite
Two of the three case pages, Verse and the investment manager, are a single paragraph with no technical detail, so ask for architecture and delivery specifics
The site names no delivery locations, only a Vilnius address and a London business-development contact, so ask where your team would be based
Advisor Finder platform with a benchmarking tool featuring data visualization and a forecasting model, and a matching tool connecting investors with financial advisors
Project page · captured · Investment and trading software
Business intelligence web app that imports and unifies data from 12 to 15 payment gateways to calculate agent commissions, with import logging and customizable reports
39%12 of 31 public projects, counted on its portfolio, Nov 6, 2026
Case studies read
125 say the product is live
Software engineering firm with offices across Latin America and in Miami, whose public fintech work includes a business banking app, the Nequi digital bank app and a Salesforce AI agent for retirement benefit inquiries.
Mobile business banking app for payments, transfers and credit line disbursements, covering design, implementation, production deployment and app store release
Project page · captured · Mobile and online banking
Mobile banking app on AWS using microservices, serverless processing and APIs, with face and voice biometric identity checks, built by an agile team
Project page · captured · Mobile and online banking
Show or hide fit, checks and technology for Pragma
Where Pragma may fit
Banks and digital banks in Latin America building mobile banking apps
Financial institutions deploying Salesforce AI agents to answer customer inquiries
Check before hiring Pragma
The Nequi case describes work that began in 2015; ask for more recent banking references
The site lists offices and operations in the US, Colombia, Peru, Panama, Guatemala, Mexico, Costa Rica, Honduras, Ecuador and the Dominican Republic but names no headquarters and does not say which of them deliver engineering work
39%22 of 56 public projects, counted on its portfolio, Nov 6, 2026
Case studies read
154 say the product is live
Most-named standards
KYC in 1 case study
Polish engineering firm that embeds teams with clients, whose public fintech work includes credit-risk scoring, a round-up giving app, broker trading APIs and a bank fraud-screening module.
New backend for a round-up charitable donation platform, covering global currency balancing, country locators, public profiles and card operator support
Discovery and custom development of a document management system for a large US investment firm, delivered as a subcontractor to a Big Four consultancy
Project page · captured · Document and back-office systems
Custom loan management system covering origination, servicing, collections, and credit bureau integrations
Project page · captured · Lending and loan management
Show or hide fit, checks and technology for ScienceSoft
Where ScienceSoft may fit
Lenders replacing packaged loan management software with a custom platform
Financial firms scoping agentic AI use cases before building voice and workflow agents
Check before hiring ScienceSoft
Three fintech projects are cited and two are lending systems, so ask which fintech work beyond lending the proposed team delivered.
Both lending cases are for one client, Atlas Credit, and the investment case does not name its client
ScienceSoft lists offices in the United States, Mexico, Poland, Latvia, Finland, Saudi Arabia and the UAE but does not say which of them deliver engineering work, so ask where your team would be based
Adyen payment integration with unified checkout, multi-currency and multi-merchant support, webhook handling and internal dashboards for transactions, disputes and refunds
Fraud alerting pipeline taking signals from Forter and Stripe Radar, with configurable risk thresholds and Slack notifications routed to finance, compliance or support
Project page · captured · Risk, compliance and data governance
Show or hide fit, checks and technology for Skillian
Where Skillian may fit
Payment and reconciliation workflows
Teams needing custom operational dashboards
Check before hiring Skillian
Company size is not independently confirmed, so ask for headcount and who would staff the project
Several portfolio entries describe capabilities rather than named clients
Rewrite of a Rails backend app for a buy now, pay later bill payment service, with modular payment APIs for ACH and several third-party integrations
Project page · captured · Payments and cards
Show or hide fit, checks and technology for thoughtbot
Where thoughtbot may fit
Teams modernizing an existing financial application
Product organizations that want coaching alongside delivery
Check before hiring thoughtbot
thoughtbot has 5 fintech projects among its 75 public ones, and the two cited are a lending-platform modernization and a consumer fintech app rewrite, so ask what the other three cover.
Clarify the expected team shape and time commitment
Technology focus
Web and mobile products
Legacy modernization
Product delivery systems
None of the companies on this list match those filters. A suitable company may still exist outside this list.
How do you choose a fintech software development company?
Choose a fintech software development company by matching one of its documented projects to your workflow, such as lending, payments or trading, then checking how much evidence it has and who carries compliance and reconciliation. Shortlist two or three firms and compare written proposals.
How much public evidence does each company have?
Of the 20 companies on this fintech list, 14 link two or more project pages and 6 link one. A single case study is one instance of the work as the company reports it, so before you shortlist, ask for a second reference from a project like yours. Across the 870 software firms whose public pages we captured on Nov 5 and 6, 2026, 408 show at least one fintech project. Of those, 21 have five or more public projects in total, with 30% or more of them in fintech. Where we publish a count of a firm's whole portfolio, its card shows the fintech share.
What should you verify before hiring?
Building a product is not the same as taking on the buyer's regulatory obligations. A case study that mentions PCI DSS, KYC and AML checks, or SOC 2 does not show that the team building yours holds those responsibilities, so ask which attestations cover the people you would get.
Are project budgets published?
No. Few companies publish current hourly rates or minimum project sizes, so neither is listed here. Ask each company for a written proposal, and do not infer a budget from headquarters or company size.
What should you ask a fintech software development company before shortlisting it?
Public case studies rarely show who carries PCI DSS, KYC and AML, or SOC 2 obligations, so ask each company these four questions before you shortlist it, and expect the answers in its written proposal.
Which past fintech projects handled card data under PCI DSS, identity checks for KYC and AML, or bank connections?
Which security attestations, such as SOC 2 or ISO 27001, cover the team that would build your product?
Who owns integrations, reconciliation, and data access, and how are security boundaries set?
Which named people would staff the project, and what does the proposal exclude?
How were these companies selected?
A company is listed only when its own public pages name a relevant fintech project, on a project page or a portfolio index; an industry label alone is not enough. Peter Korpak, founder of 100Signals, reviews every listing.
This list is not exhaustive, and each company appears on one industry page only. A company missing here may be on the healthcare or AI development page, may not have been reviewed yet, or may not have met our criteria.
We started from 941 firms that list fintech or banking work. Of those, 148 had a portfolio entry that looked like fintech work, we confirmed a project page showing fintech work for 81, and 20 are on our shortlist so far.
These counts are a minimum: a firm we did not count may still have relevant work on its site.
The market figures on this page describe the 870 software firms whose public pages we captured on Nov 5 and 6, 2026, not the whole market. The sample percentages above come from a random draw of 298 case studies per industry on Nov 6, 2026 and describe only those case studies.
Many lists on this topic are published by companies that sell to the same buyers who read them. Of the 13 such lists we read on Nov 5, 2026 for healthcare, fintech and AI development searches, 12 listed their own publisher first. 100Signals is not listed here.
Each card shows the date its listing was last reviewed. 100Signals is not itself a software vendor in these categories: it is a demand generation agency for software development firms that sells marketing services to those firms and may have commercial relationships that are separate from this list.
Peter Korpak started as a financial analyst at Credit Suisse and Aviva Investors and has spent 8 years building pipeline for software development agencies. About Peter
What do the project sources prove?
A project page describes one engagement; a portfolio index only names projects, so it supports a narrower claim. Neither is independent proof of delivery, and a standard named in a case study is not a certification. Capture dates show when a page was saved, not when the work happened, and outcome figures a company reports about itself are not presented here as measured results.
How can a listing be corrected?
If a listed company needs a factual correction, email peter@100signals.com. Each correction is checked against the company's own pages, and a review date changes only when the whole listing is reviewed again.
Can Peter Korpak review your shortlist?
Yes, if you want a second opinion. Peter Korpak at 100Signals reads shortlists sent through this optional form and replies by email. The companies you select are not contacted automatically.
