We build payment systems, integrate banking APIs and ensure regulatory compliance. A technology-first approach to financial solutions.
From startups to large banks — we match tools to the scale and goals of your business.
Development and integration of payment gateways, acquiring systems, P2P transfers and multi-currency settlements. Connection to international payment networks.
Open Banking, BaaS platforms, interbank integrations and custom financial service development.
KYC/AML systems, transaction monitoring and full PCI DSS compliance audits.
Cloud migration, microservice architecture adoption and financial business process automation.
Credit scoring, fraud monitoring, operational risk and predictive analytics. We build models that cut losses and accelerate decision-making.
We have deep sector expertise across five verticals — giving our clients the benefit of industry-specific knowledge from day one.
Core banking modernisation, digital channels, regulatory compliance
MVP architecture, payment stack, licensing strategy and scale-up
Claims automation, underwriting models and embedded insurance APIs
Checkout optimisation, instalment products and multi-currency payments
National payment systems, e-government finance rails and treasury solutions
"We don't just consult — we build systems that are still running ten years from now."
Founded in 2012, SELENA, OOO has grown from a boutique advisory into a 40-strong engineering consultancy. We combine regulatory knowledge with hands-on engineering to deliver financial infrastructure that is secure, scalable and built for the long term.
We design payment gateways, acquiring and processing systems from scratch or modernise existing ones
We connect Open Banking APIs, instant payment systems, interbank networks and BaaS platforms
We ensure adherence to PCI DSS, central bank requirements and international compliance standards
We move financial processes onto modern rails: cloud, microservices and intelligent automation
A structured, transparent process — from the first call to stable production. Each step has a clear deliverable and a named owner on our side.
We assess your existing infrastructure, map the regulatory landscape and identify the critical bottlenecks and growth opportunities before writing a single line of code.
We design the solution, define the technology stack, draft the delivery roadmap and lock in requirements — so both sides have a shared picture of success.
Two-week sprints with interim demos and security code reviews at every checkpoint. You see real progress — not status reports.
Controlled deployment, live monitoring and SLA-backed hypercare. We stay with the system until it is stable — then transition to ongoing support on your terms.
The best financial technology is invisible — it just works, reliably, every single time.— SELENA, OOO · Core design principle
Our specialists have hands-on experience inside banks, payment processors and regulatory bodies. We know the industry from the inside — not from a slide deck.
We take responsibility from audit through architecture to live operation. One team, one accountability chain — no handover gaps or finger-pointing.
Fixed timelines, open-book reporting and measurable KPIs for every project. If something changes, we tell you immediately — not at the next monthly review.
Leave a request or reach out directly — we respond within one business day. Initial consultation is free.
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