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Víctor Alejandro Cantera Herrerías
Víctor Alejandro Cantera Herrerías

Senior Software Engineer & Tech Lead in Payments and Fintech

Open to offers · Member since 15 Oct 2026
Message
Location
Elche, Spain
Desired salary
Confidential
Work preference
Remote Only / Full Time, Part Time, Contract, Freelance
Experience level
Senior

About

Professional summary

I am a Senior Software Engineer and Tech Lead with more than eight years of experience in the payments industry. I build secure, scalable payment solutions for banking clients, covering the path from merchant integrations to transaction-processing platforms.

I currently lead a five-person engineering team at Necomplus, part of Payten / Asseco Group. My work includes technical architecture, implementation, code reviews, mentoring, and acting as the main technical contact for clients.

My core expertise includes payment gateways, Redsys and Realex integrations, 3DS2 and PSD2/SCA flows, card tokenization, physical POS terminals, and PCI DSS-aware development. I have supported hundreds of merchants integrating e-commerce payment solutions and later progressed to building the underlying platforms.

I develop .NET microservices and modern web applications using C#, .NET 6/8, Vue, and TypeScript. I work with distributed systems deployed on Azure Kubernetes Service and use CI/CD practices to deliver reliable software.

I use AI-assisted engineering tools, including Cursor, Claude, and ChatGPT, for architecture exploration, code review, test scaffolding, refactoring, and documentation. I use these tools to improve delivery speed while retaining ownership of engineering and quality decisions.

I am continuing to deepen my knowledge of .NET architecture and distributed systems, and I enjoy connecting with professionals working on payment infrastructure across Europe.

Notice period: 1 month

Skills

29 capabilities
.NET CoreASP.NET CoreAzureBackend DevelopmentC#CI CDCode ReviewDistributed SystemsEntity FrameworkFintechFrontend DevelopmentJavaScriptMentoringMicroservicesPayment ProcessingPCI DSSPHPPOS IntegrationPSD2Software EngineeringSQLStrong Customer AuthenticationTeam LeadershipTechnical DocumentationTechnical LeadershipTechnical SupportTypeScriptUnit TestingVue.Js

Tech stack & tools

Working toolkit

Application Hosting

AzureAzure Cosmos DBAzure DevOpsRed Hat Linux

Application Utilities

Postman

Data Stores

Azure SQL DatabaseMongoDBMySQLPostgreSQL

Development

DockerDrupalGitGitHubKubernetesLinuxRabbitMQUbuntuVisual StudioVS CodeWordPress

Languages & Frameworks

.NET.NET CoreCSS3FlutterHTML5JavaScriptMagentoPHPPythonReactTailwind CSSTypeScriptVue.jsVuetify

Marketing and Sales Tools

WooCommerce

Mobile

AndroidAndroid Studio

Monitoring

Prometheus

Experience

Career history

Senior Software Engineer & Tech Lead | Payments Grupo Necomplus (Member of Payten)

I design and build payment-platform microservices for banking clients in the Payten / Asseco Group. I develop .NET 6/8 services deployed on Azure Kubernetes Service and Vue 3 plus TypeScript frontends serving thousands of merchants and users.

I lead a five-person team, making technical design and architecture decisions, conducting code reviews, mentoring engineers, and serving as the primary technical contact for clients. My payments work includes Redsys integrations, 3DS2/PSD2 SCA flows, card tokenization, and physical POS terminal integrations.

I use AI coding assistants and LLMs for code scaffolding, refactoring, unit-test generation, documentation, and design exploration while maintaining code-review and engineering-quality standards. The stack includes C#, .NET, Docker, Kubernetes, Azure DevOps, PostgreSQL, SQL Server, Cosmos DB, MongoDB, and RabbitMQ.

Full Stack Developer Grupo Necomplus (Member of Payten)

I developed web products for payment and banking-services clients. I built and maintained .NET Core 2.2/3.1 and .NET 6 backend services using Entity Framework and SQL, alongside Vue 2/3 and TypeScript frontends.

I worked on Azure-based deployments and progressed from a developer role into leading projects, which led to my subsequent Tech Lead position.

Technical Support — Payment Gateway Integrations (Redsys and Realex) Grupo Necomplus (Member of Payten)

I provided technical support by telephone and email for Redsys and Realex payment-gateway integrations. I supported merchants integrating e-commerce platforms including Magento, WooCommerce, PrestaShop, Shopify, OpenCart, VirtueMart, and Drupal.

I developed deep knowledge of payment-gateway integration requirements and helped resolve technical integration issues for online payment environments.

Customer Service Representative (via Necomplus) Comercia Global Payments

I handled technical and commercial questions during and after payment-gateway integrations, including integration errors, terminal configuration, transactions, and security protocols.

I provided telephone and email support for Realex and Redsys integrations across major e-commerce platforms. I supported payment services including DCC conversion, 3D Secure, card tokenization, PCI requirements, and pre-authorizations.

I also supported PHP integrations and contributed to documentation and SDK improvements for the Addon Payments payment gateway.

Education

Learning history

IES La torreta

Higher Vocational Training, Telecommunications & IT Systems

Nuevos Medios

Web Developer, Front-End & Back-End Web Development

Salesianos San José Artesano

Vocational Training, Consumer Electronics

Salesianos San José Artesano

Educación Secundaria Obligatoria (ESO), Secondary Education

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