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We build fintech apps that customers actually want to use

We’ve partnered with major European banks and innovative fintech startups to create experiences that make complex financial tasks feel simple. We deliver fintech applications that meet your timeline and budget, without surprises.
Get it right the first time
No costly rework. Our 10+ years of expertise mean your product works for users from day one.
Improve user satisfaction
Our fintech app redesigns reduce support tickets and increase user engagement.
Flexible team, zero overhead
Get on-demand designers, developers, product specialists when you need them. Scale freely.
Built-in compliance & security
We understand PCI-DSS, GDPR, PSD2, and SOC2. Your product launches compliant.
Security-first
Regulation-ready
Built for scale

Your fintech foundation: secure, scalable, trusted.

Our fintech software development services

Whether you’re building a challenger bank, embedded finance solution, or specialized fintech tool, we’ve got the technical expertise to bring your vision to life. Here’s what we build across the financial services ecosystem.
Starting at $7,950 / 4 weeks
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AI implementation & integration
We integrate GenAI and LLM into your stack and help your team automate their workflows.
Product concept in a few weeks, MVP in a few months
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End-to-end fintech product development
Your fintech idea from vision to concept to a market-ready MVP and fully developed product.
Team ready in 1-2 weeks
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User experience design
Intuitive digital experiences that boost engagement and reduce your support tickets. Proven on multiple projects.
30% faster releases
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Digital transformation & Agile consulting
We upgrade your tech stack and guide your team on implementing Agile practices that accelerate delivery.
20–50% reduction in maintenance costs
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Legacy software modernization
Your outdated systems rebuilt for better performance, scalability, and long-term maintainability.
95% of candidates approved by clients
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Staff augmentation & Engineering squads
Vetted designers and engineers to scale your development capacity instantly.

Key expertise for fintech

Whether you’re building a challenger bank, embedded finance solution, or specialized fintech tool, we’ve got the technical expertise to bring your vision to life. Heres what we build across the financial services ecosystem.
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Banking & Payments
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    Mobile banking apps
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    Digital wallets and payment processing
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    Cross-border payment solutions
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    Open banking API integration
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Investment & Trading
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    Trading platforms with real-time data
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    Portfolio management and robo-advisors
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    Alternative investment platforms
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    Risk management dashboards
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Lending & Credit
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    Automated lending platforms
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    Credit scoring and underwriting systems
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    Buy-now-pay-later solutions
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    Peer-to-peer lending marketplaces
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Wealth Management & Savings
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    Automated portfolio management tools
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    Goal-based savings apps
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    AI-driven risk assessment engines
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    Robo-advisor workflows powered by AI/ML risk profiling
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Insurance & Insuretech
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    End-to-end digital onboarding and policy purchase flows
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    Claims automation systems
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    Predictive underwriting models
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    Customer portals for policy management, renewals, and payments
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Blockchain & Crypto
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    Secure web3 wallets
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    Smart-contract–powered payment rails
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    Tokenization platforms for digital assets
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    KYC and transaction verification systems
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    Banking & Payments
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    Investment & Trading
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    Lending & Credit
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    Wealth Management & Savings
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    Insurance & Insuretech
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    Blockchain & Crypto
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Banking & Payments
  • check
    Mobile banking apps
  • check
    Digital wallets and payment processing
  • check
    Cross-border payment solutions
  • check
    Open banking API integration
illustration
icon
Investment & Trading
  • check
    Trading platforms with real-time data
  • check
    Portfolio management and robo-advisors
  • check
    Alternative investment platforms
  • check
    Risk management dashboards
illustration
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Lending & Credit
  • check
    Automated lending platforms
  • check
    Credit scoring and underwriting systems
  • check
    Buy-now-pay-later solutions
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    Peer-to-peer lending marketplaces
illustration
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Wealth Management & Savings
  • check
    Automated portfolio management tools
  • check
    Goal-based savings apps
  • check
    AI-driven risk assessment engines
  • check
    Robo-advisor workflows powered by AI/ML risk profiling
illustration
icon
Insurance & Insuretech
  • check
    End-to-end digital onboarding and policy purchase flows
  • check
    Claims automation systems
  • check
    Predictive underwriting models
  • check
    Customer portals for policy management, renewals, and payments
illustration
icon
Blockchain & Crypto
  • check
    Secure web3 wallets
  • check
    Smart-contract–powered payment rails
  • check
    Tokenization platforms for digital assets
  • check
    KYC and transaction verification systems
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How we work with fintech teams

We offer three engagement models designed to help fintech startups bring their product ideas to life quickly and cost-effectively.
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Product Concept
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End-to-end Development
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Team Augmentation
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Product Concept
Perfect for validating your idea and building stakeholder buy-in:
  • Market research and competitive analysis
  • User journey mapping
  • Technical architecture recommendations
  • Development roadmap and cost estimates
  • Clickable prototype for investor presentations
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End-to-end Development
End-to-end development with compliance built-in
  • Human-centered design process
  • Agile development with weekly demos
  • Built-in security and regulatory compliance
  • AI integration where it adds value
  • Launch support and team training
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Team Augmentation
Add specialized talent without hiring headaches:
  • Proven fintech developers and solution architects
  • AI/ML specialists for intelligent features
  • Compliance experts for regulatory requirements
  • DevSecOps engineers for security-first infrastructure
Not sure which engagement model fits your needs?
Let’s figure it out! Book a free 30-min call with our team and get all your questions answered.

Fintech products we’ve helped ship

Fintech startups and global banks count on us to deliver products users love. Along the way, we solve the resource and technology challenges that hold teams back. See how in our case studies.
Empowering Nowo fintech with a high-performing self-managed team
NOWO is a Swedish fintech company specializing in retirement savings. Now a publicly traded company, they hired Tallium to modernize their applications and customer portals.

We made financial planning feel really simple. With average score of 4.8 stars in the App Store and Google Play, user signups surged by 30%.
Empowering Nowo fintech with a high-performing self-managed team
View case study
Dedicated cross-functional teams of IT Engineers, Analysts, and AI/ML experts powering digital innovation
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Iryna Bohomolova
Head of IT-Development Department, Kyiv, Ukraine
SAFe frameworks, trained employees, Agile methodologies
#1 banking group in Georgia
• 2.2M clients, 6K+ employees
SAFe frameworks, trained employees, Agile methodologies
Mobile Banking App: 50+ features in 8 months
End-to-end mobile banking transformation
View case study
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Proud to be a trusted partner

We measure our success with success of our customers and partners. By helping others win and grow we aspire to build bulletproof alliances.
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Reviewed onstar4.9
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39 REVIEWS
Tallium are very agile in their way of working, and deliver on time. They always aim to get a deeper understanding of our needs and feedback.
Marco Villaggi
Project Manager, Technical Business Developer at Mangold.
Stockholm, Sweden Stockholm, Sweden
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Their grit and willingness for timely delivery were impressive.
Christoffer Grönberg
CPO, Inconsu
Stockholm, Sweden Stockholm, Sweden
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Throughout the design process, we would carry out testing with real users and the feedback was always good. Tallium team was always open different viewpoints, and would iterate accordingly until the desired option was identified.
Dexel E. Sagoe-Moses
Product Manager, ALU
Ghana, Accra Ghana, Accra
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They listened to all of our requests and gave us very good design advice.
Associate, E3 Capital
We needed a mobile PDF viewer with secure role-based access, and Tallium delivered perfectly. Their communication was clear, their engineering solid, and they understood our goals from day one. Their work significantly improved our product experience.
Alexey Titov
CTO, DigiSigner
Munich, Germany Munich, Germany
Tallium helped us build a full-scale mobile e-commerce app, from discovery and UX to integrations and loyalty features. Their team was proactive, fast, and always ready to adapt. The app performed beyond expectations and delivered immediate user growth.
Nataliia Srednia
CMO, Prostor
Kyiv, Ukraine Kyiv, Ukraine
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Tallium Inc. became the best partner we’ve worked with this year.
Paul Dziama
CEO, See The Balance
Tallium integrated into our internal team effortlessly. They delivered high-quality UI, strong mobile development, and kept every milestone on track. Their clarity in communication and ownership of tasks were especially valuable.
Iryna Bohomolova
Head of IT-Development Department, JSC Sense Bank
Kyiv, Ukraine Kyiv, Ukraine
Communications were absolutely first class in all areas, extremely impressed with the ease of conversation in English.
Atem Mbeboh
Founder, Rant + Rave
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The outcome of the design phase far exceeded our expectations.
Warsame Ahmed
CEO & Co-Founder, BR[AI]YT AI Inc
Ottawa, Canada Ottawa, Canada
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We loved the evolution of the designs but also the product ownership they gave and strategic direction they provided.
Thomas Bell
Director of Technology, Global Nomads Group
New York City, United States New York City, United States
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Consumer satisfaction increased – support errands decreased, saving millions.
Johan Falkmarken
Founder at Kolla information Sverige AB
Stockholm, Sweden Stockholm, Sweden
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Tallium has acted as lead developer and taken a great deal of responsibility to improve and streamline the architecture.
Lars Ledin
CEO, MiQ Sweden AB & LVL5 AB
Sundsvall, Sweden Sundsvall, Sweden
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There’s nothing they’ve not been able to do. In addition, they would also fix any bugs found at no extra cost. Their customer service is just awesome.
Ollie Wright
Owner, Osint Ltd
London, United Kingdom London, United Kingdom
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If you are not able to do things in-house, they’ll find the resources to help you through it and guide you.
Christelle Hafstead
Owner, dekoLiv
London, United Kingdom London, United Kingdom
Such great organisation during the whole process. These were the people that you could rely on.
Chief Creative Officer, Design Company
Berlin, Germany Berlin, Germany
View more
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Deep fintech expertise
we’ve built banking systems for UBS, mobile apps for major European banks, and compliance tools for Fortune 500s.
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Security & compliance built-in
No scrambling to add compliance later. We build with PCI-DSS, GDPR, AML/KYC, and SOC2 requirements from day one.
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In-demand tech: AI/ML, blockchain
We build solutions with AI and predictive analytics. And we know how to bring blockchain finance products to life.
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Cost-effective delivery
Get a full product team (designers, developers, compliance experts) for less than hiring one senior engineer.
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One-stop shop for all things fintech
AI strategy, UX design, development, or ongoing support → we handle it all. You get all under one roof.
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Trusted by leaders
From challenger banks to embedded finance solutions, we’ve helped fintech companies launch and scale to millions of users.
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Why fintech companies
choose with Tallium

We understand the unique challenges of building financial software – from regulatory compliance to user trust to enterprise-grade security. Here’s what sets us apart:
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Deep fintech expertise
we’ve built banking systems for UBS, mobile apps for major European banks, and compliance tools for Fortune 500s.
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Security & compliance built-in
No scrambling to add compliance later. We build with PCI-DSS, GDPR, AML/KYC, and SOC2 requirements from day one.
icon
In-demand tech: AI/ML, blockchain
We build solutions with AI and predictive analytics. And we know how to bring blockchain finance products to life.
icon
Cost-effective delivery
Get a full product team (designers, developers, compliance experts) for less than hiring one senior engineer.
icon
One-stop shop for all things fintech
AI strategy, UX design, development, or ongoing support → we handle it all. You get all under one roof.
icon
Trusted by leaders
From challenger banks to embedded finance solutions, we’ve helped fintech companies launch and scale to millions of users.
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Get in touch

Let’s create something your users will love.
Fill out the form - we’ll get back to you as soon as possible.
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