Developing a financial product isn't just developing another application. DSP2 banking aggregation, KYC processes, accounting reconciliation, position calculation, audit trail: an error isn't read in a log, it's read in a balance. The choice of development partner therefore weighs as heavily as the choice of stack.
Here is our 2026 selection of the ten key companies for building a fintech product in the French market.
Our selection criteria
To feature in this Top 10, a company must accumulate:
Financial products in production, not just mock-ups or POCs.
Mastery of industry constraints: DSP2, GDPR, KYC and AML-CFT, audit trail, reconciliation.
A team of employed engineers, capable of taking over existing systems and not just writing new ones.
Verifiable references from financial players: banking, insurance, wealth management, payment.
An ability to operate in the French market, with reachable contacts.
Transparency regarding code ownership and reversibility conditions.
Ranking compiled by Galadrim. We feature in our own selection by applying the six public criteria above.
Comparison of the 10 best fintech development companies in 2026| Company | Founded | Size | Fintech specialisation | Ideal Profile |
|---|
| 1. Galadrim | 2017 | 170+ | Tailor-made financial products and applied AI | Fintechs, wealth management, brokerage, mid-cap companies |
|---|
| 2. EnactOn Technologies | 2013 | 80 | Transactional platforms, cashback, payouts | Platform publishers, scope already specified |
|---|
| 3. Theodo FinTech | 2017 | ~60 | Banking applications, investment, payment | Growing fintechs, banking business units |
|---|
| 4. OCTO Technology | 1998 | Several hundred | Architecture and refactoring of banking foundations | Banks and insurers undergoing modernisation |
|---|
| 5. Meritis | 2007 | 900+ | Market finance, risk and compliance | Corporate and investment banks, asset management companies, insurers |
|---|
| 6. Ippon Technologies | 2002 | 700 | Cloud, data and Java for banking and insurance | Banking and insurance IT departments |
|---|
| 7. Skaleet | 2005 | ~120 | Core banking SaaS (publisher) | Neobanks, PSPs, Banking-as-a-Service |
|---|
| 8. Yield Studio | 2019 | Parisian studio | Web and mobile financial services applications | Startups and mid-cap companies, turnkey product |
|---|
| 9. Talan | 1999 | 6 000+ | Data, AI and tokenisation in finance | Large corporations, multi-year programmes |
|---|
| 10. Fragments Studio | 2024 | A few senior staff | DSP2 banking aggregation and open banking | Projects where aggregation is at the core |
|---|
1. Galadrim
The French tech & AI agency that builds end-to-end financial products, from the customer journey to back-office automation.
Year founded : 2017
Size : 170+ experts, including around thirty AI engineers. Founded by two former Polytechnicians (ex-Meta, ex-Microsoft).
Headquarters : Paris (HQ), Nantes, Lyon. Presence in Spain, Switzerland and the United Kingdom.
Fintech expertise: Client portals and investment journeys, bank account aggregation, mobile investment applications, insurance contract subscription and management, accounting automation, AI agents on financial data.
Key clients : BNP Paribas, Cyrus Herez, Or.fr, Groupe Odealim, Innovie, Dune Assurances, CNP Assurances, Easton.
Signature client case : Cyrus Herez (€20bn in assets): portfolio management client portal delivered in 5 months for over 10,000 end clients. Or.fr: redesign of the mobile application for gold and precious metals investment, 50,000+ users, 4.4/5 on app stores. Groupe Odealim (insurance brokerage, €165m turnover): AI agents processing over 50,000 responses per month, +150% customer service productivity. Easton: automation of accounting ledger matching, productivity multiplied by 5.
Why it features in this ranking : Galadrim ticks all six boxes: an employed team of 170 people, products in production with a wealth manager, a precious metals dealer, and two insurance brokers, and publishable figures for each. It is also one of the rare players to cover the entire chain – customer journey, back-office, AI applied to financial data – without changing providers between front-end and automation.
The engineering partner for transactional platforms: cashback, affiliation, tracking and payouts.
Year founded : 2013
Size : 80 employed engineers, no subcontracting or freelancers.
Headquarters : Surat (India), with a European office in Bern (Switzerland).
Fintech expertise: Cashback and affiliation platforms, transaction tracking and reconciliation engines, user payout workflows, cashback crypto, cloud-native architectures and Large Language Model integration into transactional systems.
Key clients : Padoc (advertiser management, Europe and United States), and cashback and comparison platform publishers across 65 countries.
Signature client case : Padoc: performance marketing software that automates campaign management and ad optimisation during Black Friday and Cyber Week peaks. Regarding its core cashback business: platform commissioning, integration of several affiliation networks, reliable click and transaction tracking, and user payment workflows.
Why it features in this ranking : Over 500 products delivered for 350 clients in 65 countries, and 90% returning clients - a rate that, in this business, speaks louder than a logo. EnactOn is the only non-French player in this selection: it is included because transactional tracking and payout engines are a rare expertise, and because its Bern office makes the European time zone practicable. To be reserved for projects whose scope is already defined: it is a very high-level executor, not a Product Discovery partner in French.
3. Theodo FinTech
The Theodo group's entity dedicated to financial services.
Year founded : 2017, under the name Sipios. Entity of Theodo group.
Size : Around sixty people for €24M in turnover, representing a quarter of Theodo group's turnover (700 people, €90M).
Headquarters : Paris.
Fintech expertise: Banking and insurance applications, investment and payment platforms, asset management tools, modernisation of financial information systems, lean Product development.
Key clients : BNP Paribas and Qonto on the finance side. The Theodo group's other public references (Contentsquare, ManoMano, Safran, Dior) are outside the financial perimeter.
Signature client case : Investment products and business tools for French banks and asset management companies, built by integrated teams at the client's site.
Why it features in this ranking : A team dedicated to finance, supported by the processes and engineering talent pool of a generalist group. The integrated product team format on the client's premises suits growing fintechs and business departments of banks who want to deliver without going through their IT department. To be checked upfront: the proportion of references that actually pertain to the fintech entity and not the rest of the group, and the seniority of the proposed team.
4. OCTO Technology
The architecture and implementation consultancy you call to rebuild a banking foundation.
Year founded : 1998. An Accenture subsidiary since 2017.
Size : Several hundred consultants, architects and engineers. Certified B Corp and Great Place to Work.
Headquarters : Paris, with regional and international offices.
Fintech expertise: Banking information system architecture, microservices and event-driven, cloud migration, Data Engineering, refactoring of legacy foundations.
Key clients : Major French banks and insurers, public sector.
Signature client case : Programmes for modernising banking platforms and decoupling monolithic systems, conducted in parallel with operations.
Why it features in this ranking : The right contact when the question is no longer 'how to code this feature' but 'how to move away from this foundation without stopping production'. Publicly documented technical culture - publications, USI, La Duck Conf, School of Product - which allows for evaluation based on evidence before signing.
5. Meritis
The specialist in market finance, from business to IT.
Year founded : 2007
Size : 900+ consultants and over 450 active clients, 75% of whom belong to the CAC 40 or SBF 120. Certified B Corp company.
Headquarters : Paris.
Fintech expertise: Front-to-back market finance, risk and compliance, Software Engineering, Data, cloud and cybersecurity.
Key clients : Investment and corporate banks, asset management companies, insurers.
Signature client case : Transformation projects on front-to-back chains: valuation, risk management, regulatory reporting.
Why it features in this ranking : Few players combine both business and technical expertise in market finance. Meritis intervenes where the difficulty is not the code but understanding a pricer or a prudential requirement - and that's precisely where projects derail.
6. Ippon Technologies
The cloud & Data consultancy for technical departments in banking and insurance.
Year founded : 2002, by Stéphane Nomis.
Size : 700 employees. Offices in Paris, Nantes, Bordeaux, Lyon and Strasbourg, as well as in the United States and Australia.
Headquarters : Paris.
Fintech expertise: Java and JVM software development, Data platforms, cloud architecture and migration (AWS, GCP), DevOps. Publisher of the open-source generator JHipster.
Key clients : French banks, insurers and mutual societies.
Signature client case : Data platforms and cloud migrations for banking and insurance players, including the migration of existing production chains.
Why it features in this ranking : Very strong foundation expertise. This is not the consultancy you ask for user experience; it's the one you entrust with the platform it will run on.
7. Skaleet
The French core banking editor, for those launching a bank rather than an application.
Year founded : 2005, under the name TagPay. Became Skaleet in 2021.
Size : Around 120 employees.
Headquarters : Paris.
Fintech expertise: SaaS and API-first core banking platform: accounts, payments, savings, cards, compliance and accounting on a single codebase.
Key clients : 30 clients in 15 countries: neobanks, payment service providers, retail banks and Banking-as-a-Service players. Among them, Nirio (FDJ United).
Signature client case : Nirio: a neobank with a French IBAN and card, backed by point-of-sale bill payments, launched in six months on the Skaleet platform.
Why it features in this ranking : Differentiated positioning from the rest of the selection: editor, not a development service provider. Voted Europe's best core banking solution 2026 by Euromoney. To be considered as soon as the project involves opening accounts and issuing cards: rewriting a ledger and a compliance chain from scratch is rarely the right trade-off.
8. Yield Studio
The Parisian Product studio that has made financial services a full-fledged vertical.
Year founded : 2019
Size : Human-sized studio, Parisian team of engineers and designers.
Headquarters : Paris (9e).
Fintech expertise: Web and mobile applications for asset management, cashback and collection modules (PayPal, Apple Pay, Google Wallet), AI investment tracking assistants, regulatory compliance of user journeys.
Key clients : Suzuki, Carrefour, Bpifrance, and French fintechs.
Signature client case : Cashback module for a French fintech, supporting PayPal, Apple Pay and Google Wallet payments. For asset management: portfolio tracking applications and market trend information chatbots.
Why it features in this ranking : The studio format, for projects that need a finished product rather than an in-house team. The financial services vertical is fully embraced and publicly documented, which remains rare for studios of this size.
9. Talan
The consulting and technology group that industrialises Data, AI and tokenisation in finance.
Year founded : 1999
Size : 6,000+ employees across five continents.
Headquarters : Paris.
Fintech expertise: Financial services transformation, Data and AI, blockchain and digital assets, compliance, programme management.
Key clients : Retail and investment banks, insurers, asset managers.
Signature client case : Data and AI transformation programmes for banking groups, and asset tokenisation projects.
Why it features in this ranking : The size and international coverage needed to carry out a multi-year programme, with a real head start on digital assets - a subject where many consultancies communicate more than they deliver.
10. Fragments Studio
The DSP2 bank aggregation specialist, when the project hinges on this single link.
Year founded : 2024
Size : Studio of senior developers; four of them on a banking integration project.
Headquarters : Paris, with offices in Marseille and Évreux.
Fintech expertise: Open banking connectors via DSP2 aggregators (Bridge, Powens, Tink): retrieval of balances, transactions and IBANs, consent management and its renewal.
Key clients : French fintech publishers and startups. CII-approved studio.
Signature client case : Complete aggregation chains delivered in six to eight weeks, with a first production flow announced within twenty days, management of the eleven connection statuses and consent renewal fifteen days before its expiration.
Why it features in this ranking : The smallest format in the ranking, and the most precisely equipped on a subject most teams underestimate. DSP2 authentication expires after 180 days: without proactive renewal, bank connections silently empty and the product loses its raw material. Fragments isolates the aggregator behind an internal interface, which allows it to be changed without rewriting the product – an architectural choice worth copying.
Are you building a product or a bank? If the project involves opening accounts, maintaining a ledger and issuing cards, start with a core banking platform (Skaleet) and develop what sits on top of it. If the project is a product built on existing rails - aggregation, brokerage, wealth management, accounting - then custom-built is the right choice.
Is your difficulty business or technical? On a front-to-back market finance chain, it's business understanding that is most often lacking: Meritis. On an aging platform to decouple without service interruption: OCTO or Ippon. On a product to design and put into users' hands: Galadrim, Theodo FinTech or Yield Studio.
What team format? A dedicated product team on a fixed-price basis commits to a result and is suitable for projects with a moving scope. Time and materials (T&M) is suitable for reinforcing an already structured internal team. A specialised studio (Fragments, EnactOn) is suitable when the need is a precise, already specified link.
What budget should you plan for? The observed ranges in 2026: a scoped fintech MVP, with a user journey and banking integration, is between €80,000 and €200,000. A product in production with compliance, back-office and data migration: from €200,000 to €600,000. A platform overhaul or a multi-year programme exceeds one million. For Time and Materials (T&M), expect €550 to €900 per day (TJM) depending on the seniority and rarity of the profile.
The filtering question: « Can you show me a financial product you have put into production, with its figures? » An evasive answer means disqualification.
Discuss your project
Do you have a financial product to build or a platform to modernise? Contact the Galadrim team. We take on subjects based on business needs.
About the author: Arnaud Albalat is the CTO of Galadrim, a French tech & AI agency based in Paris (HQ), Nantes and Lyon, with a presence in Spain, Switzerland and the United Kingdom. Since 2017, he has supported SMEs, mid-caps and large corporations in framing and delivering custom financial products, with clients such as BNP Paribas, Cyrus Herez, Or.fr and Groupe Odealim.
Arnaud Albalat's LinkedIn.
_ZWR7SP.webp)
_MkvBH.webp)
_Z29Ubp8.webp)