Zoltán Iszlai

I work as a Senior Java Fullstack Engineer / Contractor / Freelancer and help worldwide online businesses develop solid enterprise products. My programming language of choice is Java for backend solutions, using mainly the Spring framework and Angular for frontend solutions. I am adaptable, having done Azure DevOps and React development. I'm continuously looking for new challenges and opportunities for self-improvement. Let's connect if you think my expertise can help solidify your business!

The client, a top Netherlands bank, was experiencing considerable annual losses and was struggling with low user engagement due to still employing outdated internal and customer-facing applications. Eliminated annual losses amounting to over €100M by designing a rock-solid platform by in-depth researching client requirements with Deloitte by architecting a transparent and flexible solution. Skills: Java, Spring, Microservices, JUnit, Mockito, Swagger, Selenium, Cucumber, Splunk, JavaScript, Azure DevOps

The client, a top Netherlands bank, was wasting a significant amount of time, due to a painfully slow validation process of compliance certificates from their paper to digital covenant monitoring application. Successfully showcased to 5 top-level banking executives and VPs as a go-to solution for a paper to digital transformation, compliance certificate verification and monitoring solution. Skills: Java, Python, OCR, NLP, ML, Angular, TypeScript, JavaScript, Docker, AWS

The client, Netherlands biggest auto insurance company, was constantly losing huge amounts of revenue due to employing a costly import/export service and a slow, unintuitive user interface. Reduces import/export fees by more then 40% by integrating with an alternative REST API service in Spring with WSDL/XSD transformation for a secondary import/export service. Skills: Java, JHipster, JAX-WS, JAX-RS, REST, SOAP, Angular, TypeScript, JavaScript, Bower, Gulp, Maven, Bash, Jenkins, Docker, AWS

The client, an Australian-based startup, was struggling with building a workable model of their productivity application and consequently was wasting a huge amount of time, due to lacking a clearly outlined plan to achieve their vision. Successfully launched the pilot application within 3 months from proof of concept to pilot phase by designing the architectural documentation and by creating a clear product roadmap. Skills: Java, Spring, Hibernate, REST, Angular, TypeScript, JavaScript, Bootstrap, Jenkins

The client, a leading European SaaS software company had no success in securing funds from investing companies and developing new features due to focusing on unstable and error-prone building allocation and management components. Eliminated 100% of bugs from the building allocation component, by creating a rock-solid component by aligning with the client and in-depth researching the functional documentation. Skills: Java, EJB, EclipseLink, REST, SOAP, BDD, JUnit, MySql, JBoss, Jenkins

The client, a top Netherlands retail multi-bookstore company, was wasting a huge amount of time on internal data organization processes due to using a slow, error-prone excel based data entry system. Improved promotional offer creation time by 60% by architecting a complex reusable search framework used for filtering, sorting, rule checking for products with Excel export. Skills: Java, Spring, Hibernate, REST, Swagger, Angular, TypeScript, JavaScript, PMD, Babel, Gulp, Bootstrap, SASS, Oracle, Tomcat

The client, a prominent Dutch company active in the sports industry, was struggling with low user satisfaction and consequently was losing customers, due to their platform’s painfully slow and bulky UI. Achieved a user satisfaction score of 90% by aligning with the architectural board by implementing complex and highly-intuitive UI designs using modern front-end best practices. Skills: C#, .NET, MVC 4, JavaScript, C3, jQuery, Bootstrap, HTML, CSS, MsSql, Azure Insights, Azure DevOps

The client, a major Romanian forest management company, was wasting a significant amount of time, due to inaccurate planning and measurements in their mapping platform and lacking proper, meticulous insights for their forests. Increased surface area calculation accuracy by 30%, by designing a highly-efficient algorithm for JavaScript polygon-based surface area calculation and integrating geo-location. Skills: JavaScript, OpenLayer, Bing Maps API, HTML, CSS, GeoServer

The client, a major Netherlands-based insurance company, was wasting a huge amount of time and was losing customers, due to the time-consuming, manual process of calculating travel insurances and a painfully slow and bulky application. Successfully launched the application 3 months ahead of schedule by designing a custom-tailored insurance agent manager, finder and an insurance search engine. Skills: Php, PHPDoc, PHPMD, Php Depend, Php CPD, PHPLOC, JavaScript, HTML, CSS, MySql, Apache

The client, Transylvanian branch of an international digital marketing franchise, was wasting a significant amount of time and was losing new customers due to overall unsuitable client management and unsatisfactory user engagement. Successfully eliminated 100% of client complaints within less than 5 months by engaging with clients by in-depth researching and sizing their needs while also overseeing new engagements. Skills: DotNetNuke, JavaScript, HTML, CSS, MsSql, Coaching, Agile, Scrum

The client, Germany's biggest tourism agency, was unable to present clients with the best options when choosing booking or transportation options on its platforms due to operating with multiple 3rd party services instead within one centralized portal. Reduced manual labour involving airport transfer from 80% to 30% by in-depth researching the technical documentation and by designing a multi-stage based white-label solution for 5 travel portals. Skills: Php, Zend Framework, REST, JavaScript, HTML, CSS

The clients, SME companies active in the financial sector, were struggling to attract new clients and consequently were unable to increase profits, due to their poor online presence and outdated websites. Successfully launched more than 100 websites by managing and mentoring 8 top talented frontend developers by creating strategic alliances with US and EU based banking institutions. Skills: Php, Laravel, LightCMS, ModX, CMSMS, Smarty, JavaScript, HTML, CSS, SASS, Bootstrap, MySql, Apache

The client, an Australian based market leader, offering front-end development services to Fortune 500 companies, was struggling to develop newsletters and maintain websites due to lacking technical skills and highly qualified fullstack developers. Increased brand fidelity by 70% for major financial companies by designing rock custom-tailored solutions by carefully following brand guidelines while efficiently balancing team effort. Skills: Php, Laravel, ModX, JavaScript, HTML, CSS, SASS, Bootstrap, Apache

The client, a major United States SEO company, was struggling to launch a keyword research application and consequently was missing out on potential revenue, due to lacking technical expertise in interconnecting Google services. Saved more than $5K revenue per month by designing an innovative app that does cross-integration between Google Adsense, Adwords and the Google Data APIs. Skills: Php, Google Adsense, Google Adwords, JavaScript, MySql, Apache

The client, an associate professor in INSA, was struggling to get funding from investors for his idea to research imagery, approaching it from a case-based reasoning perspective due to missing practical applicability. Successfully showcased a viable solution to 4 highly prestigious conferences by creating custom-tailored innovative image search trace reusability algorithm within a photo gallery management app. Skills: Java, Php, JavaScript, HTML, CSS, MySql, Apache

The client, a USA based real-estate development company, was continuously losing a huge number of customers due to lacking an online platform to showcase their rental properties. Decreased lead qualification time by 50%, by creating a custom-tailored real-estate portfolio management application with CMS capabilities, by creating an efficient algorithm for lead management and evaluation. Skills: Php, JavaScript, HTML, CSS, MySql, Apache