Fintech Software Outsourcing: Models, Cost, Risks, Vendor Choice

To succeed in the competitive fintech industry, companies must not only release advanced digital products but also do so faster than competitors. They must also comply with regulatory requirements that can change frequently and quickly. This is one of the key reasons the IT outsourcing market in the financial sector is projected to reach $115 billion by 2028. And this isn't just a race for cheap professional resources that can quickly deliver software products.

For a modern neobank or payment service, outsourcing is a way to acquire an experienced team with a proven security and architecture background, without spending six months hunting for senior talent. For many fintech companies, the question is how to do it without damaging the product or creating security holes. At Stubbs, we see that success in this area depends on a deep understanding of the fintech domain and the flexibility of the development process.

Why Fintech Teams Outsource

The days when outsourcing the core of a financial product was considered taboo are long gone. Today, fintech software outsourcing is a strategic tool that allows CTOs to fill expertise gaps and avoid burning through a startup's runway with endless hiring. Let's examine the main reasons fintech companies seek external technology partners.

Speed, niche expertise

In fintech, time-to-market significantly impacts competitive advantage. If you spend three months searching for a blockchain developer or an architect with PCI DSS knowledge, your competitor might deploy an MVP and raise their first round in that time. Fintech development outsourcing provides access to engineers who have already learned to integrate with banking cores and to avoid system crashes during the initial influx of users. This allows development to begin much faster than traditional hiring. 

Scale, budget control

Fintech projects often operate in cycles. That is why active growth before a release or the integration of a major partner requires an essential expansion of the team. Maintaining 20 extra developers "just in case" is expensive for any startup. An outsourced team allows for flexible scaling. You can add two front-end developers for the duration of a project. Or reduce the team without conflicts and severance payments if the project has entered the support phase. 

Compliance support

Security in fintech demands not only an SSL certificate, but also compliance with GDPR, PSD2, local regulatory requirements, and data security standards. An experienced outsourcing partner builds development processes with these restrictions in mind from the start. The IT vendor should understand how this code will pass audits. This saves months of redesigning the architecture to meet compliance requirements in the future.

What You Can Outsource

If a vendor has proven experience in the fintech industry, you can outsource most product development areas. From building a quick prototype needed to test hypotheses to developing complex billing systems and integrating with legacy banking infrastructure. Below, we've compiled a list of typical product building blocks that fintechs most often delegate to external teams. 

MVPs, core product builds

For a startup, outsourcing an MVP is the logical path. This allows founders to focus on the business model and fundraising while a technical partner builds the product's core. The key here is to choose a team that understands the Lean concept and won't suggest building a skyscraper where a solid foundation is sufficient. An outsourced team helps quickly test hypotheses while maintaining the ability to scale the architecture. 

Banking, payments, lending

Developing payment gateways, integrating with Stripe or PayPal, and creating systems for issuing microloans are all high-load tasks. They demand accurate and seamless transactions. Here, fintech outsourcing helps implement complex functions from multi-currency wallets to automated scoring. For example, creating systems for neobanking includes account management, card issuance, and P2P transfers. All of this requires deep expertise in API integrations. 

Wealth, trading

Investment platforms and asset trading applications are impossible without real-time data processing. External teams often take on the development of dashboards for traders, portfolio management systems, and integration with exchanges via protocols such as FIX. They enable work with charts and complex analytics and ensure minimal latency, reducing latency-related trading risks.

KYC/AML, RegTech

Identity verification (KYC) and anti-money laundering (AML) are a serious challenge for many fintechs. Outsourcing the development of these modules enables rapid implementation of solutions from Sumsub or Onfido, automating document and sanctions list verification. This is a critical area where software errors can result in direct fines from regulators. 

Data, integrations

Modern fintech is unimaginable without APIs, whether it's Open Banking or synchronization with clients' CRM and accounting systems. Outsourcing teams specialize in creating the "glue" between different services, ensuring seamless data exchange. At Stubbs.pro, we often deliver complex systems that transform data from various sources into business-ready analytics.

Outsourcing Models

In IT, there's no one-size-fits-all setup that will perfectly fit every business's processes. The choice of engagement model depends on the availability of in-house expertise, the product stage, and the degree to which founders or CTOs are willing to micromanage. Let's look at three classic work formats that we regularly use in fintech projects.

Dedicated team

This model is well-suited for large-scale, long-term projects where requirements can change on the fly. The vendor assembles a turnkey cross-functional team comprising business analysts, DevOps engineers, UX/UI designers, QA engineers, developers, and other specialists needed for your project. Essentially, you get a fully-fledged IT department that works exclusively on your product but is not on your balance sheet. At Stubbs, we often use this format when creating complex fintech solutions, such as trading platforms. This allows the team to deeply understand the domain context and architectural nuances, working in complete sync with the client's business goals.

Staff augmentation

Possibly, you already have a strong tech lead and a well-established core team, but lack specialized specialists or the necessary resources to speed up releases. In this case, staff augmentation is a good solution. Let's say you urgently need a senior Solidity developer for smart contracts or an AWS expert to tighten the screws on PCI DSS standards. You simply lease the required specialist, and they will be directly integrated into your daily stand-ups, sprints, and repositories. 

At Stubbs, we actively use this model, helping major fintech players close technological gaps. For example, our specialists used the Staff Augmentation model to develop Ukraine's largest financial portal, Finance.ua. Also, we strengthened the team at the decentralized exchange MuesliSwap by implementing sophisticated analytics and optimizing interfaces.

According to a 2025 global analytical report, a lack of expertise has become the main driver of this model. Indeed, 72% of organizations worldwide use outstaffing specifically to quickly fill technological gaps in complex areas from cybersecurity to cloud architecture. This allows them to avoid months-long talent hunts and project downtime.

Project delivery

This format works well for isolated tasks with a strictly defined scope. You assign a specific task to a vendor, for example, developing a mobile "shell" for an existing web portal or integrating a new payment gateway.

Businesses may use fixed-price or time-and-material models. The vendor manages resources, risks, and the timeline. And the customer accepts the final result. This is a good solution for testing hypotheses or creating a Proof of Concept (PoC).

How to Start

For an outsourcing partnership, it's not enough to transfer tasks to Jira and wait for the finished product. The development process requires careful setup. A successful start determines how smoothly further development will proceed and whether the codebase will need to be refactored later. Here's a step-by-step launch plan to help avoid common pitfalls.

Scope, success metrics

Don't start a project with an abstract idea of ​​"we need an app like Revolut." The first step is to decompose business requirements into a clear technical scope. Determine which features are included in the MVP and which are relegated to the backlog. It's equally important to establish success metrics, which may include the following:

• Time-to-Market, for example, a product’s release in 4 months.
• Performance, for example, processing 10,000 transactions per second without downtime.
• Successful completion of a security audit, etc.

Clear KPIs will protect both parties from the effects of disappointed expectations.

Vendor shortlist, validation

Hiring inexperienced teams to develop fintech applications is risky. That is why a beautiful landing page of a vendor’s website isn't enough to assess a potential partner and make a deal. When compiling a shortlist, consider domain expertise. Ask potential vendors if they've worked with the Open Banking API, how they implement data encryption, and whether they understand KYC/AML principles. Request references, study case studies from similar niches, and be sure to conduct technical interviews with key leads you plan to hire for your project.

Pilot sprint, onboarding

Don't sign a contract without testing a team’s skills. Start with a small pilot project or a 2- to 4-week test sprint. This will allow you to assess the quality of the code, the communication patterns, and the adequacy of the estimates. Secure onboarding should proceed through several steps. They include signing strict NDAs, setting up a VPN, and granting access to staging environments and CI/CD pipelines.

Governance, reporting

To avoid budgetary uncertainty, develop a transparent governance framework. It should answer the key question: How often will synchronizations occur? Will you have access to boards and time trackers? How will the problems be resolved? 

The project manager responsible for implementing this governance framework plays an important role in the outsourcing team. They highlight risks before they become blockers and ensure that every hour spent moves the product toward release.

Cost Drivers

One of the main concerns for any founder or CTO when searching for a partner concerns development costs. In fintech, there are no standard price lists, and the final bill can vary significantly depending on the architecture, the chosen operating model, and even the vendor's geography. Let's examine the main cost drivers and identify where you can safely cut costs and where budget cuts will have fatal consequences.

Scope, integrations, timeline

Obviously, the budget is determined by the product's complexity. But in fintech, the main expenses are not a beautiful UI but backend and security. The more third-party integrations, such as payment gateways, KYC providers, and banking APIs, the higher the development and fault-tolerance testing costs.

Timelines also play an important role. If you need to launch a complex product quickly, you will have to involve more senior developers and add overtime. This directly inflates your project's budget. We advise our clients to break down the scope. First, release an MVP with one or two key features, for example, just onboarding and P2P transfers. Then collect feedback and gradually expand functionality. This prevents a situation where your budget is burned through integrating with a dozen services that users ultimately don't need.

Pricing: T&M, fixed, monthly team

How you pay affects the overall cost as much as what you pay for:

• Time & Materials. You pay for the hours engineers actually work. This is the fairest and most flexible format for Agile projects, where requirements can change after each sprint.
• Fixed Price. This model seems like a safe option, but the vendor often includes additional risk buffers in the cost. Still, this model is well-suited for tightly documented microtasks. However, when developing complex fintech platforms, Fixed Price can lead to endless conflicts over every specification change.
• Dedicated Team. You pay a fixed monthly rate for full-time specialists. At Stubbs, we often use this model for large projects. Businesses receive a predictable burn rate and a team fully immersed in their product without losing focus on other tasks.

Rates by region, seniority

Developer rates reflect a balance among budget, code quality, and cultural fit. Today, a vendor's geography determines the lion's share of the budget, and the difference in bills can be colossal:

• For comparison, according to IT services market reports, in the US, rates for Senior developers or architects easily reach $150–$250 per hour.
• In Western Europe (UK, Germany), the price tag is slightly lower, but still steep: $90–$150 per hour.
• Against this backdrop, outsourcing to Ukraine remains an attractive choice. With a similarly high level of engineering culture, a strong mathematical foundation, and fluent English, Ukrainian mid- to senior-level specialists' rates range from $40 to $75 per hour. This means that by assembling a dedicated team in Ukraine to develop a neobank or crypto wallet, you can significantly reduce costs compared to an in-house team in the U.S while maintaining high engineering standards.

Hidden fees: tools, audits, support

When planning a budget, businesses may forget about infrastructure and post-release costs. Coding alone accounts for only a portion of the budget. In fintech, a significant portion of the budget is spent on third-party services, including paid APIs, cloud infrastructure (AWS, Azure), and software licenses. For example, Sumsub or Onfido charges for each user verification. Compliance and security are very expensive budget items. An external smart contract audit or PCI DSS compliance processes can cost tens of thousands of dollars. Also, don't forget about SLAs and technical support. After release, the product needs to be monitored 24/7, bugs fixed, and dependencies updated. That is why a proper estimate typically includes about 15-20% of the initial development budget annually for maintenance and development.

Security, Compliance

Fintech doesn't forgive leaks or negligence. In e-commerce, a bug might simply result in an abandoned shopping cart. However, in the financial sector, the consequences can be far worse. For example, leaked card data due to inadequate security can result in multi-million dollar fines from regulators and damage the product's reputation. Therefore, security and compliance issues must be discussed and addressed before any code is written.

Secure SDLC, access control

Implementing a Secure SDLC is essential for financial products. This means that security measures should be integrated at every stage of development rather than being scripted before release. For example, we have dedicated Security & Compliance specialists who oversee this process at Stubbs. They ensure the architecture is initially compliant with industry standards such as the OWASP Top 10 and PCI DSS. We implement strict access control (RBAC), configure data-at-rest and data-in-transit encryption, and do not give developers direct keys to production. Deployment occurs through automated, isolated environments.

Audit readiness for KYC/AML

Financial regulators around the world are putting forward increasingly stringent requirements, and your product must be ready for them at any moment. Onboarding modules must be designed to quickly download transparent logs and reports for auditors. Simply connecting a third-party API for passport verification is not enough for businesses. They must properly store session tokens and hash users' Personally Identifiable Information. We design systems to ensure compliance checks and anti-money laundering (AML) audits in EU or US jurisdictions are completed smoothly.

IP ownership terms

Who owns the code after release? This issue must be firmly established in the contract. In transparent outsourcing, the norm is to transfer all intellectual property (IP) rights to the client immediately upon payment. There should not be gray areas or hidden vendor licenses for custom modules. It's important to spell out strict NDAs and disclaimers to ensure your unique proprietary scoring logic or trading algorithms don't end up in the public domain or with competitors. A proper agreement ensures that you, as the client, receive full rights not only to the final product but also to the entire infrastructure, Git repositories, and technical documentation.

Risks, Controls

Outsourcing is not a magic pill, as it entails certain risks. The primary task of the CTO or founder at this stage is not to avoid all threats, but to build a system that highlights deviations from the course before they become fatal to the budget and deadlines.

Communication, visibility

Working in a "black box" mode, where the vendor disappears after coding starts and returns six months later with a completed release, does not work in fintech. A lack of communication poses a risk of receiving a product that is not what you need. A very expensive example of coordination failure is the 2022 cancellation of the replacement for the Australian Securities Exchange CHESS system. After several years of development and a budget of over $170 million, the project was abandoned. The key reasons are siloed vendor development, a lack of transparent reporting, and misaligned expectations. The engineering team worked in a communication vacuum, failing to synchronize the architecture with the client's actual requirements.

Quality, tech debt

The race for time-to-market can tempt developers to write hacks and rely on hardcoding. This may lead to technical debt, which, over time, can significantly slow product development. According to a recent global study by Deloitte, technical debt servicing accounts for between 21% and 40% of companies' IT budgets. This is supported by data from other industry reports indicating that 45% of businesses lose over $5 million annually solely due to poor software quality and outdated architecture. This can include bugs, downtime, code rewrites, and so on. At Stubbs, we always tell our clients that while some UI simplifications are acceptable for an MVP, the core architecture must be solid. It must be covered by tests from the very beginning to prevent refactoring from eating up all the profits.

Vendor dependency

One of the biggest fears of businesses is being held hostage by an outsourced team. This happens when a vendor writes a product in obscure frameworks, uses proprietary engines, or simply doesn't document business logic. If you decide to replace the team, new engineers will simply get lost in this spaghetti code. To avoid vendor lock-in, insist on mainstream technologies such as React, Node.js, Python, and others. Require the use of standard clouds such as AWS and Azure, and constant access to repositories.

Quality gates, documentation, SLAs

Trust in a business partnership is essential, but so is control. It's important to establish strict Service Level Agreements (SLAs) for fintech products. They should outline requirements for uptime and response time to critical bugs.

Also, implement quality gates. According to this concept, code should not be pushed to production unless it passes linters, unit tests, and a review by an independent tech lead. And most importantly, require strict documentation. API descriptions in Swagger and architectural diagrams should be updated in sync with releases, not relegated to the backlog.

Vendor Checklist

Choosing a fintech outsourcing partner is similar to hiring a technical co-founder. Given the high cost of error, relying solely on intuition and a beautiful presentation is unwise. To avoid getting a bad deal and overspending your budget, the selection process must be pragmatic and based on clear criteria. Below is our checklist to help you weed out weak candidates even at the pre-sale stage.

Fintech track record

General-purpose IT companies may pose a huge risk for financial startups. If a vendor built online stores yesterday and is now taking on the development of the crypto wallet project, integration issues can arise. Verify their real domain experience using various indicators such as knowledge of ISO 20022, previous experience configuring Stripe Connect for complex split payments, understanding the difference between hot and cold wallets, etc. Since we at Stubbs focus on fintech, our specialists know from experience that developing a neobank architecture is fundamentally different from building another CRM system. Look for a partner who has already solved problems in your niche and speaks your language.

QA maturity, delivery cadence

In fintech, high development speed shouldn't compromise quality. Ask the candidate how their testing process is structured. If QA engineers are manually fixing features already deployed to production, that should be a red flag. Look for a mature engineering culture with configured CI/CD pipelines, automated UI, and meaningful automated test coverage. Development velocity should also be predictable. Ask for examples of how the development team estimates story points, how it manages the backlog, and how often it experiences pre-deployment fires.

Security posture

As we've already mentioned, in the financial sector, security is not a feature, but a foundation. When evaluating a vendor, dig into the technical details. Find out if they have a DevSecOps practice, how they manage secrets, and whether they conduct regular penetration tests. Be sure to inquire about their experience with compliance. A partner should understand how to implement GDPR requirements or PCI DSS encryption at the architectural level. If your question about SQL injection protection is answered with generic marketing platitudes, consider it a red flag. At Stubbs, these issues are transparently addressed during the first call with our Security Lead. 

References, pilot results

Appealing interfaces on Dribbble won't reveal how a team handles server incidents. Request contact information from past or current clients to ask them the tough questions. How does the vendor handle bugs? Are estimates being met? What is the code transfer process? A short, paid pilot sprint is an effective test drive. Allocate 2-3 weeks and a limited budget to a small but achievable task. The pilot's results will clearly demonstrate the quality of commits, the adequacy of Slack communication, and the team's ability to deliver value on time. This is the most cost-effective way to test a partner before signing a long-term contract.

Why Choose Stubbs

Why do fintech companies trust us with their software development? The answer lies in our deep technical expertise and transparent processes. At Stubbs, we create secure, scalable, and fast financial and Web3 applications for startups and mid-sized businesses (SMEs). Over five years of experience in a highly competitive market, we've successfully launched over 100 projects. Our core team comprises 20+ IT experts specializing in complex business logic and in integrating banking APIs, payment gateways, and KYC/AML providers. Our portfolio includes real fintech solutions:

• Myntkaup is a cryptocurrency trading platform for the Icelandic market. We implemented secure authentication via local e-IDs and multi-currency support. Also, we developed a Profit and Loss feature that allows traders to track their assets.
• MuesliSwap is a decentralized exchange (DEX) platform. Our specialists completely updated the UX/UI, implemented advanced charts via Chart.js, a user-friendly order system, and real-time market analytics.
• Finance.ua is Ukraine's leading financial portal with 5 million monthly visitors. Our team developed insurance aggregators, complex internal component libraries, and optimized the entire portal frontend.

​We are flexible and offer various collaboration models tailored to your product's stage: 

• Outstaffing / Staff Augmentation. As with the Finance.ua project, our developers can seamlessly integrate with your in-house team to strengthen their expertise and speed up releases.
• Dedicated Team: A close-knit group of experts fully immerses itself in your domain and takes on the entire development cycle.
• Project Delivery. We conduct turnkey development for fixed tasks such as creating a prototype in a few weeks or launching a full-fledged MVP in 3-6 months.

At Stubbs, we value integrity, an engineering approach, and speed, helping accelerate your product validation.