Garanti BBVA International (GBI) has appointed Maveric Systems as its preferred partner for a major core banking transformation, selecting the India-headquartered specialist to rebuild and modernise its Temenos platform in a programme that places heavy emphasis on software quality, resilience and accelerated change delivery.
The project will reimplement GBI’s Temenos T24 system on the latest release of Temenos Transact, marking one of the bank’s most significant technology upgrades in more than a decade.
GBI, established in Amsterdam in 1990, operates as a mid-sized European bank serving retail, corporate and institutional clients. Its business spans trade and commodity finance, corporate lending, global markets and a targeted retail offering in the Netherlands and Germany.
As part of the BBVA Group and a subsidiary of Garanti BBVA, one of Türkiye’s largest private banks, GBI plays a strategic role in cross-border flows between Europe and emerging markets.
Modernising its core platform is therefore both an operational priority and a digital-resilience investment, as legacy components are replaced with standardised, better-tested and more secure services.
“Our collaboration with Maveric Systems marks a significant step forward in our core transformation journey,” claimed Sebnem Ipekci, Chief IT & Operating Officer at Garanti BBVA International.
“Reimplementing our core platform with the latest release will enable us to use the platform’s inbuilt functionality with limited customisation and launch newer products to markets faster,” she said, explaining that “we chose Maveric for their domain depth, strong Temenos delivery credentials and deep understanding of our strategic priorities.”
For QA and testing teams across the industry, the transition from deeply customised T24 stacks to standardised Temenos Transact environments represents a substantial shift.
Standardisation typically reduces long-term technical debt, but it places high demands on functional testing, regression automation, performance validation and resilience assurance during the re-platforming window.
GBI will have to assure complex data migrations, product refactoring, and the stability of customer-facing channels across the Netherlands and other selected markets.
Maveric’s global expansion
Maveric Systems, founded in 2000 and specialising exclusively in banking and financial-services technology, has built much of its global reputation on software quality engineering and large-scale transformation assurance.
Its portfolio spans AI-driven testing, domain-led engineering, data validation, automation frameworks and transformation governance.
According to the firm, its approach “combines deep domain knowledge with AI-powered services and solutions” and is “anchored in dedicated AI Centres of Excellence, proprietary frameworks and deep proficiency across leading AI platforms.”
The firm has also been expanding aggressively across Europe and the US. In 2024, Maveric completed a years-long QA programme with Allica Bank, where it led test engineering across the bank’s fast-growing digital platform.
Other 2024 reporting highlighted Maveric’s US expansion, its IPO preparation, and new senior leadership appointments to support international growth. Across these engagements, QA transformation and software testing maturity have been recurring themes.
Maveric said the GBI selection underscores its position as a domain-led integrator for Temenos-centric programmes.
“The partnership with Garanti BBVA International highlights Maveric’s proven capability to deliver complex core banking transformations at scale,” stressed Ranga Reddy, the current CEO of Maveric Systems.
“Combining banking domain fluency with Temenos product mastery, we will modernise GBI’s core for faster time to value. This collaboration reinforces our role as the domain-led transformation specialist for banking leaders, driving impact through delivery models that align with each bank’s unique journey.”
For GBI, the ability to strengthen software reliability and operational resilience is a core objective. Re-platforming onto the newest Temenos release is expected to simplify product design, reduce bespoke code, and create a more testable, predictable and automated environment for long-term change.
It also positions the bank to integrate more advanced analytics, regulatory reporting and risk-management capabilities, all areas where QA has become inseparable from compliance readiness.
As more European and emerging-market banks modernise their core stacks, the GBI–Maveric partnership reflects the sector-wide trend toward industrialised QA, model-driven testing and resilience-by-design architecture.
With regulatory scrutiny rising around digital continuity, transaction stability and third-party risk, the transformation places quality assurance at the centre of GBI’s next decade of technology strategy.
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