Full-Stack Dedicated Development for a Leading European Banking Institution

Client Overview
A top-tier European banking group, listed on the FT Global 500, provides a full spectrum of financial services across Europe, Asia, Africa, the CIS, and North America. With a large multinational customer base and an extensive branch network, the Client set out to accelerate digital transformation and redefine its operational efficiency.
Challenge
To remain competitive in a rapidly digitizing world, the Client launched an ambitious digital transformation initiative. The objective: develop and implement advanced automation solutions tailored to both internal operations and external service delivery.
Instead of building an entirely in-house development team, the bank opted to engage external partners capable of delivering fast, scalable, and secure full-stack development. GP Solutions was selected for its deep-rooted experience in banking tech and the ability to quickly ramp up specialized engineering teams.
Our Role
GP Solutions was brought in to support multiple digital streams aimed at optimizing internal processes, enhancing user experience, and launching new digital services. Starting with one pilot project, our engagement quickly expanded across four mission-critical development tracks.
Project # 1:
Allocated team (FTEs): 1 team lead, 1 React developer, 2 Java developers, 1 System Analyst, 1 QA.
Technology stack: Java 11, SpringBoot, JUnit, Redis, PostgreSQL, React / Redux, Typescript, Webpack: 4.42.0

Internal business processes
A custom subsystem was created to streamline internal processes, including marketing material orders, event coordination, HR approvals, and audit controls. One standout feature was an online spreadsheet module enabling real-time collaborative editing.
Project # 2:
Allocated team (FTEs): 1 team lead, 1 front-end developer, 1 back-end developer, 1 QA specialist.
Technology stack: Java 11, SpringBoot, JUnit, Redis, PostgreSQL, React / Redux, Typescript, Webpack: 4.42.0

Corporate Training Portal
A secure, closed-loop e-learning platform was built to manage corporate training. Managers can assign courses and track progress, while employees can access learning materials anytime, anywhere — all within the bank’s infrastructure.
Project # 3:
Allocated team (FTEs): 1 team lead
Technology stack: Java 11, SpringBoot, JUnit, Redis, PostgreSQL, React / Redux, Typescript, Webpack: 4.42.0

Manager Task Control System
Our team lead spearheaded the development of a centralized account system for upper management. Features included a dynamic task assignment interface, notification center, and smart calendar tailored to banking workflows.
Project # 4:
Allocated team (FTEs): 1 team lead
Technology stack: Java 11, SpringBoot, JUnit, Redis, PostgreSQL, React / Redux, Typescript, Webpack: 4.42.0

Corporate Customer Portal
This B2B portal enables business clients to access financial services online — from account setup and loan applications to service package subscriptions. A bespoke content management system powers flexible updates and personalized experiences.
Results
After over a year of cooperation, it is possible to state firmly that the cooperation turned out to be quite successful. Starting with just 1 project and 2 FTEs, it quickly blossomed into a full-scale partnership involving 4 projects and 11 FTEs.
Front-end: HTML / CSS, JavaScript, React / Redux, webpack
Back-end: Java, Kotlin, SpringBoot, JUnit, Redis, PostgreSQL, TypeScript, liquibase, docker, swagger