BANKING & PROCESSING TECHNOLOGY
Engineering for card processing, core integrations, and platform migrations
Processing support, integration buses, ATM and POS software, and database moves for banks, processors, and banking software providers.
Where the engineering focus sits
In banking, a platform change touches contracts, cards, terminals, and every system that calls the core. The risk sits in the data and in calls that only the running system knows about.
Case studies
Real work already in production — a closer look at the kind of problems it solves, before you describe your own.
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01
Integration bus between internet banking, mobile apps, and core systems
Challenge
Requests between internet banking, mobile apps, internal bank applications, and third-party services needed faster, more reliable processing on a high-volume platform.
Solution
A monolithic MVP delivered in three months, then the target system rebuilt as microservices within a year: Java 17, Spring Boot, Kafka, PostgreSQL, and Tarantool.
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02
Card processing support and a platform migration under SLA
Challenge
The bank's card processing had to stay fault-tolerant and current with payment scheme requirements while moving to a new processing platform.
Solution
Processing support with incident SLAs, customizations for payment scheme requirements, and a key role in the migration to SmartVista. Every scheme release went live on schedule, and the migration runs to the bank's plan.
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03
High-load customer support platform with real-time chat
Challenge
The bank needed a fast, secure channel for customer support across its full range of payment and banking services.
Solution
Real-time web chat between customers and operators over WebSockets, with RabbitMQ distributing load across operators, ranking requests, and guaranteeing message delivery. React, Vue 3, and Python on Kubernetes. Load testing exposed a message broker limit before launch, and it was fixed in time.
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04
Client and terminal data prepared for a processing platform switch
Challenge
Moving to new processing software meant exporting all client, contract, and terminal data to a defined specification.
Solution
Relationships across all exported data mapped to keep integrity, an external database connected for additional fields, and a Linux test bench with Python and Oracle Tuxedo. The data was exported and ready for migration, with every critical client record preserved.
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05
Interest rates changed across a full contract portfolio
Challenge
Rates had to change across a large contract portfolio from a set date, under many different conditions.
Solution
Rates and their conditions described in JSON files and applied by a script on a Linux test bench with Python, Tuxedo services, and SQL, with run time tuned to the client's window. The change completed with high accuracy, in place of error-prone manual processing.
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06
Cashback and loyalty app with tokenized card registration
Challenge
The bank wanted to reward card payments at its partner stores with cashback, through a secure mobile app for its loyalty program.
Solution
A cross-platform app where customers register payment cards, browse partner stores, and get routes to them with native geolocation. Card data is tokenized through the OpenWay payment gateway and encrypted with AES-256; the backend processes transactions asynchronously and accrues cashback, running on Docker and Kubernetes for fault tolerance under load.
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07
ATM monitoring and management software, specified and built
Challenge
A new system for monitoring and managing ATMs needed specifications and development while part of the requirements was still in approval.
Solution
The full task list analyzed to start on what was settled, with the rest taken on as approved. .NET 8, JavaScript, PostgreSQL, RabbitMQ, Docker. The client extended the engagement to development and to the next stage's specifications.
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08
Oracle upgrade and a database move to Linux
Challenge
The bank needed to move its core database from AIX to Linux, with Oracle updated first.
Solution
Oracle Database upgraded to version 19, with replication reconfigured for faster queries and reliable data; the move to Linux follows on the upgraded base.
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09
Payment terminal app rebuilt for Android
Challenge
The provider needed its payment terminal application rewritten for Android, across several terminal models.
Solution
Clean architecture with MVVM and Jetpack Compose, an interface adapted to each terminal, Kotlin and Room. The app covers payment, cancellation, refund, receipt copies, reports, shift opening and closing, connection checks, configuration updates, and key loading.
Three ways to work together
Each one starts with a technical review that ends in a written plan and an estimate.
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01
Payments & Banking Integrations
Connections to banking, card, KYC, and credit providers designed, built, tested, and handed off.
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Starts with an integration plan: data flows, edge cases, and an estimate
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Banking partners, card issuing, KYC, open banking, and credit scoring
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Design, build, testing, and deployment
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Documentation your team can work from
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02
Product Engineering Pod
A dedicated team builds your product roadmap sprint by sprint, alongside your people.
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Starts with a review of the product, including code left by a previous team
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Dedicated engineers, shared planning, and regular demos
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Delivery under your brand for software providers serving banks
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Capacity that grows with the roadmap
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03
Modernization & Migration
Processing, core, and database migrations, planned around data integrity and live operations.
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Starts with a pre-migration audit: what moves, what changes, and in what order
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Migration with integrity checks on every record
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Database moves, including Oracle to PostgreSQL
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Load testing of card authorization flows before the switch-over
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Talk to the people who build it
Daria Pilyugina
Senior Business Development Manager
Delivery partnerships: white-label development for banking software providers, product integrations, referral cooperation.
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Confidentiality built into every engagement.
An NDA is signed before discovery, and code and data access is limited to the assigned engineers.
FAQs
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Can you work under our brand for our bank clients?
Yes. Engineers join as your delivery team, follow your SDLC, and work in your clients' environments under your agreements.
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Which processing and database platforms have you worked with?
Examples from delivered projects: SmartVista, OpenWay, Oracle Tuxedo-based processing services, Oracle Database, and PostgreSQL, with integration stacks in Java, Kafka, and .NET. Other platforms are taken on after a technical review.
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How is data integrity checked in a migration?
Relationships between records are mapped first, test benches reproduce the target setup, and every export is verified against the specification before the switch.
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Can you load-test our authorization flows?
Yes. Card authorization flows over ISO 8583 can be load-tested on your test environment, with results, metrics, and logs for each run.
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How is card and customer data handled?
Inside your environment and security policies. Hosting, encryption, and access roles are fixed in the technical proposal.
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Who maintains the system after launch?
That is agreed with you, in the form that suits your team: the engineers who built it stay on for support, updates, and new features; support runs on agreed hours and response times; or your own team takes over with full documentation and a handover. The options can change as the product grows.
Still have questions?
Not covered here?
A direct question usually gets a faster answer.
Tell us about your project
A few sentences are enough to start.
- Reply within one business day
- A concrete next step
- NDA on request
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