Custom Engineering
Solutions

Purpose-Built Engineering for Financial Services and AI-Native Products

Financial Services Engineering

Modern Banking Platforms. API-Driven Architecture. AI by Design.

We partner with leading banks, fintechs, and embedded finance players to build and modernise digital platforms that drive innovation, speed, and reliability across the financial services value chain.

What We Build

Retail & Commercial Banking Stack Buildouts
Deploy pre-built modules across savings, deposits and lending ( Bank-in-a-Box).
Core Banking & Middleware Integration
Experience with platform providers’ ecosystem and integration across ledgering systems, product engines, and orchestration layers.
Payments Infrastructure & Processing
Integration of SWIFT, SEPA, FPS, UPI, and BACS with real-time transaction tracking and reconciliation.
CRM & Customer 360 Enablement
Salesforce, Microsoft Dynamics, and HubSpot integration across sales, onboarding, credit, and collections.
Omnichannel Experience Design
Digital journeys and modular UI/UX to deliver seamless customer onboarding, service, and support.
Embedded Crypto Infrastructure
Wallet deployment (MPC, HSM), custody platforms, on-chain lending modules, and DeFi protocol integration for institutional crypto adoption.
Secure and Scalable Deployment
Cloud-first infra on AWS/Azure with built-in DevSecOps, observability, and SLA-based support.

And if it doesn't exist yet? We'll build it.

Delivery Model

Agile pods with hybrid UK–India engineering teams

Design-Led Discovery and MVP Launch Programs

Co-delivery with platform partners

QA automation, release governance, and compliance-first pipelines

TRUSTED BY

Monument Tech
Traydstream
HDFC
citibank
EDB
EDB
EDB
SC Bank

AI Native Product Engineering

Build Future-Ready Apps. Modernise What Matters

Legacy systems slowing you down? We help you move beyond patchwork fixes.

At IntelStack, we modernise core applications, rebuild legacy systems, and design

AI-powered solutions that are cloud-native, scalable, and future-ready.

From ERP unbundling to custom workflow automation,

we turn technical debt into digital advantage.

What We Do: Full-Stack Modernisation, Designed for Impact

From greenfield builds to legacy refactoring, we've got you covered.

Custom Application
Development
Build Scalable, Cloud-Native Applications Tailored To Your Business Goals.
Technical
Architecture Review
Identify Bottlenecks, Improve Performance, And Future-Proof Your Stack.
CRM Assessment &
Architecture Modernisation
Uncover limitations in your current CRM setup and re-architect it for scale, speed, and AI-readiness.
API Integration &
Ecosystem Enablement
Connect Your App With Third-Party Platforms, Internal Tools, And Partner Systems.
Legacy System
Transformation
Replatform Or Refactor Outdated Apps For The Cloud And Microservices.
AI Integration In
Apps
Infuse Intelligence Into Your Workflows — From Automation To Real-Time Insights.
Low-Code / No-
Code Enablement
Empower Business Teams To Create And Iterate Faster With Guided Frameworks.

WHY IT MATTERS?

Faster Time-to-Market

Deliver features and products faster with modular, agile development.

Reduced Tech Debt

Modern codebases are easier to maintain and scale.

Improved Performance

Cloud-native and microservice-driven apps are built for scale.

AI-Driven Efficiency

Add predictive, proactive, and automated capabilities with ease.

Connected Ecosystems

Build APIs and integrations that make your app extensible by design.

Tech Stack That Gets You There

icon
Frontend
React, Next.js, Angular, TypeScript, Tailwind, Vue.js
icon
Backend & APIs
Node.js, Go, Python, Java, FastAPI, Django, Express, GraphQL
icon
AI/ML
OpenAI, Hugging Face, Scikit-learn, TensorFlow, PyTorch, LangChain
icon
Data & Storage
PostgreSQL, MongoDB, MySQL, Redis, Firebase, Snowflake, Databricks
icon
Cloud & DevOps
AWS, GCP, Azure, Docker, Kubernetes, Terraform, GitHub Actions, Vercel
icon
Compliance & Security
JWT, OAuth2, Role-Based Access Control (RBAC), GDPR-aligned design, VAPT-ready builds
icon
CRM Platforms
Salesforce, Zoho, Hubspot, Bitrix

Real Results We've Delivered

icon

Salesforce CRM Modernisation

Redesigned and integrated Salesforce CRM to streamline loan lifecycle management across sales, underwriting, and collections.

icon

BaaS Platform Build

Built and deployed a white-label BaaS platform with institutional onboarding, FX, and core banking integrations.

icon

SME Current Account Platform

Launched a digital SME banking platform with high-throughput onboarding, KYC, and AML automation.

icon

Commercial Bank Modernisation

Delivered modular “Bank-in-a-Box” architecture with integrated onboarding, CRM, and product workflows.

icon

Savings & Mortgage Platform

Modernised savings and mortgage systems with low-code workflows, secure self-serve, and API-led infrastructure.

icon

ESG Investment Platform

Developed Shoal’s mobile savings and investment modules, leading core product delivery through to acquisition handoff.

Why Intelstack For Application Modernisation

icon
CLOUD-NATIVE
FIRST
Architected For Scalability, Resilience, And Performance
icon
AI BY DESIGN
Infused With Machine Learning, Not Bolted On
icon
SYSTEM-
AGNOSTIC
INTEGRATION
Built To Plug Into Your Existing Tech Stack
icon
REUSABLE
ACCELERATORS
Reduce Development Time With Our Proven Tools
icon
EXPERT TEAMS
Backed By Architects, Engineers, And A Collective Wealth Of Domain Experience

Case Studies & Resources

Loading case studies...

Let’s Build What’s Next

Whether you're transforming your banking stack or building the next AI-native product, we're here to help you succeed.