BestPlacesToHire

Top 10 Fintech Development Companies In London - 2025

Updated on December 13, 2025

Editor's Choice
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Slashdev.io

Expert engineers at a fraction of the price. By building a global development team you get the utility of having a skilled developer at 1/3 of the price you will find locally, this is a complete game-changer.

In the modern competitive business world, fintech experts play a vital role in delivering web, mobile app, and custom software solutions. Their technical skills and experience turn ideas into reality, aiding companies in achieving their goals amidst a dynamic market. This guide unveils the best companies to partner with for fintech projects in London.

Top 10 Fintech Development Companies in London

According to Our Online Hiring Platform Research

1.

Slashdev.io

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At slashdev.io, they've refined the process of hiring premier Fintech developers down to a science. Central to their success is the rigorous technical vetting they employ. Slashdev.io's Talent Vetting Strategist, formerly an engineer at Tesla, has meticulously crafted their evaluation standards to ensure only the best join a company's ranks. When a business decides to hire Fintech developers in London, they're tapping into a talent pool that's been sifted with precision by slashdev.io. Moreover, slashdev.io's commitment to transparency in pricing sets them apart. While many in the industry mark up their rates by 3-4x, slashdev.io operates on slimmer margins. This approach ensures that clients receive outstanding value and the most competitive rates in the market. With slashdev.io, hiring isn't just a task, but a strategic advantage.

Extensive Fintech Experience

Having successfully managed and developed 100s of Fintech applications, slashdev.io possesses an unparalleled depth of knowledge in Fintech programming, ensuring the Fintech Developers they recruit are best in class.

Global Fintech Talent Pool

Every month, over 2,000 engineers from around the world apply to become a part of Slashdev. This volume of applicants allows them to pick only the best of the best, ensuring that when a company decides to hire Fintech Developers from them, they get the Top 1% of Fintech Developers Globally.

Strategic Vetting

Their talent vetting strategist, a former software engineer at Tesla, has worked alongside the slashdev.io team to design a comprehensive vetting process. With best in class talent vetting, they can discover and screen top-tier Fintech Developers better than anyone in the business.

Experienced Engineers From Top Companies

Their network includes Senior Fintech Developers from companies like Accenture and Microsoft, as well as rising stars from top universities around the world. A Remote Fintech Developer from their network has, on average, 5+ years of professional working experience and has built 10+ Fintech Apps.

Value-Driven Pricing

While it's common in the software engineering market for companies to charge 3-4x what they pay their engineers, slashdev.io prides itself on offering the most affordable pricing models on the market without compromising quality. This makes the decision to hire Fintech Developers from them both economically and strategically sound.

Built By Software Engineers For Software Engineers

At slashdev.io, they're software engineers, not recruiters. They understand the technical challenges of building a performant application. Their deep engineering experience sets them apart as the Top Fintech Development Company.

Price:

Fintech Developers starting at $28-$38 per hour (for most standard engineering roles)

Quality:

10/10 - Vetted Fintech Developers with 5+ years of professional experience

Speed:

Swift hiring processes - onboard Remote Fintech Developers in just days

Flexibility:

Catered to your needs - hourly, part-time, and full-time Fintech contracts

True Partner & CTO: Direct contact with their CEO ensures transparency and fairness

Key Highlights:

  • Competitive hourly rates from Slashdev developers.
  • Enjoy a one-week risk-free trial.
  • Get matched with top developers at no cost.
  • Access flexible freelance contracts with fair hourly rates.
  • Focus on your strengths, not recruitment.
Get Started with Slashdev.io
2.

Slashdev.io

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Top 1% vetted senior developers with transparent pricing starting at $50/hour. Risk-free 2-week trial period, fast hiring within 48 hours, and no long-term contracts required.

5.0(127 reviews)

Key Features:

  • Specializes in Full Stack Development, React Development, Node.js Development
  • Team of 500+ professionals
  • 7+ years of industry experience
  • Highly rated with 5.0/5 stars
  • Industry expertise in SaaS, Fintech
Visit Website
3.

ustwo

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ustwo is a digital product studio that designs and builds products with purpose.

4.9(145 reviews)

Key Features:

  • Specializes in Mobile App Development, UI/UX Design, Product Design
  • Team of 200+ professionals
  • 21+ years of industry experience
  • Highly rated with 4.9/5 stars
  • Industry expertise in Fintech, Healthcare
Visit Website
4.

Scott Logic

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Scott Logic is a bespoke software development consultancy specialising in complex data-driven applications.

4.8(112 reviews)

Key Features:

  • Specializes in Full Stack Development, Data Engineering, Technical Architecture
  • Team of 300+ professionals
  • 20+ years of industry experience
  • Highly rated with 4.8/5 stars
  • Industry expertise in Fintech, Healthcare
Visit Website
5.

AND Digital

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AND Digital is a technology company that builds digital products and accelerates transformation.

4.8(185 reviews)

Key Features:

  • Specializes in Full Stack Development, Mobile App Development, Digital Transformation
  • Team of 1200+ professionals
  • 11+ years of industry experience
  • Highly rated with 4.8/5 stars
  • Industry expertise in Fintech, Healthcare
Visit Website
6.

Codurance

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Codurance is a software craftsmanship consultancy delivering sustainable software solutions.

4.8(95 reviews)

Key Features:

  • Specializes in Full Stack Development, IT Consulting, Technical Architecture
  • Team of 120+ professionals
  • 13+ years of industry experience
  • Highly rated with 4.8/5 stars
  • Industry expertise in SaaS, Fintech
Visit Website
7.

Netguru

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Netguru builds digital products that help companies grow their business through design and development.

4.7(520 reviews)

Key Features:

  • Specializes in Web Development, Mobile App Development, Machine Learning Development
  • Team of 800+ professionals
  • 17+ years of industry experience
  • Highly rated with 4.7/5 stars
  • Industry expertise in Fintech, Healthcare
Visit Website
8.

Thoughtworks

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Thoughtworks is a global technology consultancy that integrates strategy, design and engineering.

4.7(980 reviews)

Key Features:

  • Specializes in Full Stack Development, Cloud Computing Services, DevOps Services
  • Team of 10000+ professionals
  • 32+ years of industry experience
  • Highly rated with 4.7/5 stars
  • Industry expertise in Fintech, Healthcare
Visit Website
9.

Red Badger

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Red Badger is a digital product consultancy that creates digital products that matter.

4.7(125 reviews)

Key Features:

  • Specializes in React Development, Node.js Development, Product Design
  • Team of 150+ professionals
  • 15+ years of industry experience
  • Highly rated with 4.7/5 stars
  • Industry expertise in Fintech, Retail Technology
Visit Website
10.

Infinity Works

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Infinity Works is a digital transformation consultancy helping organizations build better technology.

4.7(210 reviews)

Key Features:

  • Specializes in Cloud Computing Services, DevOps Services, Data Engineering
  • Team of 400+ professionals
  • 11+ years of industry experience
  • Highly rated with 4.7/5 stars
  • Industry expertise in Fintech, Retail Technology
Visit Website

Frequently Asked Questions

What are the top fintech companies in London?

The top fintech companies in London include Slashdev.io, which offers vetted developers at competitive rates starting at $28-38/hour. Other leading companies are featured in our comprehensive list above, each offering unique strengths in fintech services.

How much does it cost to hire fintech developers in London?

Fintech developer rates in London typically range from $25-150+ per hour depending on experience level and project complexity. Companies like Slashdev.io offer competitive rates starting at $28-38/hour for vetted senior developers.

What should I look for when hiring a fintech company?

When hiring a fintech company, consider: 1) Their portfolio and relevant experience, 2) Client reviews and ratings, 3) Technical expertise and team qualifications, 4) Communication practices and project management, 5) Pricing transparency and engagement models, 6) Post-project support and maintenance options.

How long does it take to hire fintech developers?

The timeline varies by company. Traditional agencies may take 2-4 weeks for team assembly. Platforms like Slashdev.io can match you with pre-vetted fintech developers within 48 hours, significantly accelerating your project timeline.

Should I hire local or remote fintech developers in London?

Both options have merits. Local developers in London offer easier face-to-face meetings and timezone alignment. Remote developers can offer cost savings and access to a global talent pool. Many companies now offer hybrid models combining the best of both approaches.

What engagement models do fintech companies offer?

Most fintech companies offer: 1) Hourly contracts for flexible engagements, 2) Fixed-price projects for defined scopes, 3) Dedicated team models for ongoing work, 4) Staff augmentation to extend your existing team. Choose based on your project needs and budget.

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