Full Stack Developer - C# / SQL Server / Payment, Meta, and WhatsApp APIs

Description

Job Summary: We are seeking a Full Stack Developer to develop, maintain, and optimize web modules; integrate APIs, payment gateways, and services such as Meta and WhatsApp; and optimize SQL Server databases. Key Highlights: 1. Opportunity to join a growing technology company 2. Participation in real-world projects with high impact 3. Opportunity for professional growth and a positive work environment Main Responsibilities: Develop, maintain, and optimize web modules using C# / .NET. Create, consume, and integrate REST APIs with external services. Integrate payment gateways such as Culqi, Mercado Pago, Niubiz, PayPal, or similar. Work with Meta API integrations, including Meta Conversion API, Facebook Login, events, and tracking. Integrate WhatsApp-related services, including messaging, automation, and notifications. Design, query, and optimize databases in SQL Server. Create efficient stored procedures, views, functions, and SQL queries. Fix bugs, improve performance, and maintain existing systems. Participate in requirements analysis and propose technical solutions. Coordinate with product, support, and operations teams to implement platform improvements. Document developments, integrations, and technical processes. Requirements: Minimum 2 years of experience as a Full Stack Developer. Proficiency in C# / .NET. Solid experience with SQL Server. Experience developing and consuming REST APIs. Experience integrating payment gateways. Knowledge or experience with Meta APIs. Knowledge or experience with WhatsApp APIs. Proficiency in HTML, CSS, JavaScript, and frontend frameworks/libraries. Ability to analyze errors, optimize code, and propose improvements. Strong communication skills, responsibility, and results orientation. Preferred Qualifications: Experience with SaaS systems. Experience with CRM, management systems, membership platforms, booking systems, or commercial platforms. Knowledge of Azure, Git, Webhooks, token-based authentication, and cloud services. Experience working with third-party integrations. We Offer: Opportunity to join a growing technology company. Participation in real-world projects with high impact. Positive work environment. Opportunity for professional growth. Work with modern tools and advanced integrations.-Requirements- Minimum education: Technical 3 years of experience Age: between 26 and 35 years Skills: .net, Api, Api rest, Azure devops, Base de datos, C#, Enfoque a resultados, Integración, Javascript, Mvc, Sql server, Web Keywords: developer, programador, db, bd, sql, db2, firebird, informix, interbase, oracle, postgresql, sqlserver, mozo