Daniel Alvarez

Software Engineer with strong experience in full-stack development, API design, and system integration, with a growing focus on data engineering and data-driven applications. Currently expanding my expertise through a Master's in Big Data and Data Engineering.

• Designed, built, and maintained high-throughput backend services and REST/GraphQL APIs, streamlining data flow between frontend interfaces and core business logic, using Ruby on Rails, Python and C# .NET.
• Designed and integrated critical third-party APIs (payment, identity, and data services) into distributed systems.
• Worked with SQL (PostgreSQL, SQL Server) and NoSQL(MongoDB, Neo4j) for data modeling, querying, and optimization.
• Developed real-time data analytics tools and interactive Kibana dashboards backed by Elasticsearch, enabling cross-functional teams to extract actionable business insights from high-volume application logs.
• Built cloud-based services and deployments using AWS, including CI/CD pipelines and monitoring.
• Used Git extensively in collaborative development workflows across multiple teams and projects.
• Built full-stack web applications using JavaScript, React and Next.js.

Backend Engineer at atpoint. (2025-05 – 2026-01)

• Designed, developed, and maintained integration services and REST APIs to enable reliable data exchange between internal applications and external partners.
• Scaled and modernized at-point CAM (Customer Acquisition Management) components.
• Diagnosed and resolved production issues, improving operational stability.

Backend Engineer at Anyplace Inc (2023-08 – 2024-08)

• Developed, maintained, and optimized Anyplace's backend web and mobile platforms.
• Engineered the integration of critical third-party APIs, including Stripe for secure payment processing and Plaid for financial data verification.
• Contributed to UI development for internal tools and web applications.

Software Developer at Karger Publishers (2022-09 – 2023-07)

• Developed, maintained, and optimized C# applications using.NET 6 while supporting and enhancing legacy.NET Framework applications.
• Migrated monolithic background tasks to Azure Functions, transitioning infrastructure to a scalable serverless architecture.

Backend Engineer at Anyplace Inc (2019-06 – 2022-03)

• Developed, maintained and optimized Anyplace's backend web and mobile platforms.
• Integrated third-party APIs, including TransUnion for credit underwriting, and Rentals United (among others) for real-time channel data synchronization, building robust data-parsing pipelines and webhook handlers to maintain data integrity across systems.
• Developed real-time data analytics tools and interactive Kibana dashboards backed by Elasticsearch, enabling cross-functional teams to extract business insights from high-volume application logs.

Senior Ruby on Rails Developer at Heyjobs GmbH (2017-11 – 2019-05)

• Developed, maintained and optimized the backend part of the company's web application.
• Implemented scalable REST API integrations with multiple ATS providers, enabling seamless synchronization of candidate, application, and job posting data.
• Contributed to Frontend projects, with ReactJS.

Full Stack developer at homify Online GmbH (2014-04 – 2017-09)

• Developed, maintained and optimized the company's (e-commerce) website: frontend and backend.
• Architected and deployed multi-provider payment systems utilizing Stripe and PayPal, handling currency conversions and secure third-party data exchange in production environments

Full Stack developer at Surprise Internet GmbH (wummelkiste.de) (2013-01 – 2014-04)

• Developed, maintained and optimized the company's (e-commerce) website: frontend and backend.
• Developed an Android application for internal operations, streamlining the tracking and management of delivery parcels through real-time status synchronization with core backend databases.

Full Stack developer at Werbeboten Media (2011-08 – 2012-11)

• Implemented tailored web applications (Facebook apps) for a diverse portfolio of enterprise clients.
• Developed, maintained, and optimized a proprietary internal wrapper for the Facebook API.

C#.Net Developer at Autronik Automatización (2009-08 – 2010-08)

• Development of Windows Forms and Web Applications.

Software Developer at Adecq Digital (2007-12 – 2009-05)

• Developed a robust e-commerce engine supporting omni-channel payment processing across Web, SMS, and IVR (Interactive Voice Response) platforms.
• Developed an interactive set top box software using C and C++.

Master in Big Data and Data Engineering – Universidad Complutense (2026 – 2027)

Master in Computer Engineering and Security – Universitat Rovira I Virgili (2009)

Technical Engineer in Computer Managements – Universitat Rovira I Virgili (2006)