Senior Software Engineer with 10+ years building production systems across fintech, logistics, and insurance platforms in LATAM and Europe. Specialized in distributed architectures, async processing pipelines, and configuration-driven systems at scale. Experienced in translating complex business requirements into technical decisions and stepping into leadership when the team needs it. Currently based in Sabadell, Spain.

Daniel Hernandez

Senior Software Engineer with 10+ years building production systems across fintech, logistics, and insurance platforms in LATAM and Europe. Specialized in distributed architectures, async processing pipelines, and configuration-driven systems at scale. Experienced in translating complex business requirements into technical decisions and stepping into leadership when the team needs it. Currently based in Sabadell, Spain.

Available to hire

Senior Software Engineer with 10+ years building production systems across fintech, logistics, and insurance platforms in LATAM and Europe. Specialized in distributed architectures, async processing pipelines, and configuration-driven systems at scale.

Experienced in translating complex business requirements into technical decisions and stepping into leadership when the team needs it. Currently based in Sabadell, Spain.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Beginner
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Language

Spanish; Castilian
Fluent
English
Advanced

Work Experience

Senior Software Engineer at K-LAGAN
January 1, 2025 - Present
NEO Project - Travel Insurance E-commerce Platform (8+ countries). Worked across three interconnected products sharing a configuration-driven architecture: the B2C purchase funnel, the B2B2C agent/broker channel for policy management and quote initiation, and the Backoffice for product, pricing matrix, and business rule configuration. Designed and implemented a backward-compatible condition engine for a dynamic form system to support complex boolean relationships (AND, OR, mixed nesting), comparisons (greater/less than), and validation groups without frontend changes. Delivered foundational support for payment periodicity display and automatic promocode logic based on time windows (percentage and fixed-value discounts). Operated in a multi-team codebase serving 8+ countries and maintained retrocompatibility as a hard constraint; mentored junior engineers through buddy pairing to accelerate onboarding in a configuration-heavy system.
Senior Software Engineer at K-LAGAN · AXA Partners
January 1, 2025 - Present
NEO Project - Travel Insurance e-commerce platform covering 8+ countries with shared configuration-driven architecture across B2C purchase funnel, B2B2C agent/broker policy management and quote initiation, and Backoffice for product/pricing matrix and business rule configuration. Implemented a backward-compatible condition engine for dynamic forms supporting complex boolean relationships (AND/OR/mixed nesting), comparisons (greater/less than), validation groups, and show/hide criteria without frontend changes. Delivered foundational payment periodicity display and automatic promocode logic with time windows and percentage/fixed discounts. Contributed across a multi-team codebase for 8+ countries under a strict retrocompatibility constraint and mentored junior developers in an under-documented, configuration-heavy system.
Tech Lead at Skydropx
July 1, 2024 - November 30, 2024
Logistics & waybill resale platform for Mexico and Colombia. Diagnosed and resolved a critical sync bottleneck causing full instance crashes during high-volume merchant processing (+15,000 orders) due to synchronous in-memory accumulation. Architected and implemented an async order-sync worker using BullMQ (Redis), decoupled from the API pod, with independent chunked MongoDB bulk insert jobs, exponential backoff, configurable retries, and a real-time dashboard for manual intervention and JSON-level debugging. Reduced sync time from 8+ minutes (with crashes) to ~3 minutes for 15,000 orders, achieving ~5,000 orders/min throughput on a single store with zero post-deployment pod crashes. Improved MongoDB performance via chunked bulk writes and targeted index optimization, and stabilized service for 5 high-volume enterprise clients over a 4-week implementation.
Senior Software Engineer at SoftServe
February 1, 2024 - June 30, 2024
Online Travel Agency. Participated in architectural design and technical spikes to validate new technologies and reduce project risk. Built full-stack solutions using React, Node.js, and GraphQL integrated with Spring Boot microservices. Mentored junior developers through pair programming and maintained/optimized legacy applications using Splunk and Datadog for observability.
Senior Software Engineer at Exadel
March 1, 2023 - February 29, 2024
Healthcare / Oncology Procedural Outcomes Management platform. Contributed to a critical healthcare platform for cancer treatment tracking while adhering to strict data privacy and reliability standards on AWS/Azure. Built and optimized server-side rendered applications using Next.js, improving initial load times and SEO performance within a cross-functional Agile team.
Tech Lead / Senior Software Engineer at Revstar Consulting
November 1, 2022 - March 31, 2023
Alamon - Project Control Manager Upgrade. Partnered with the Solution Architect to define technical guidelines and migration strategies for a cloud-native redesign. Led migration of legacy systems to React and NestJS, improving scalability and maintainability.
Development Team Lead at Neostella
May 1, 2022 - November 30, 2022
Dinvy - Project Management SaaS. Managed the development lifecycle for a proprietary SaaS product by translating product roadmaps into actionable technical tasks across developers and QA engineers. Hands-on development of complex modules using React and Python, addressing major architectural problems from the backlog.
Sr. Software Engineer at Mercado Libre
November 1, 2020 - May 31, 2022
Fintech - Chargeback & Dispute Management. Contributed to migration and modernization of the internal Chargeback Management platform used by fraud analysts and customer service agents to process, track, and communicate disputes between buyers and sellers. Developed React frontend modules within MercadoLibre's Andes design system and integrated a Node.js BFF middleware layer connecting to Java/Kotlin microservices within the Fury infrastructure.
Mobile Analyst at ITS Solutions
July 1, 2020 - November 30, 2020
Banco Popular Mobile App. Diagnosed and resolved complex production issues impacting user retention on a major national banking application using React Native and Java.
Senior Front Java Developer at DXC Technology / Michael Page
October 1, 2019 - July 31, 2020
Banco Itau - Regional Mobile Strategy (LATAM). Spearheaded modernization of the bank's Mobile SDK using Angular, React Native, and Kotlin to enable faster feature integration across the LATAM region.
Software Developer at Ciberdix
March 1, 2018 - September 30, 2019
Built an offline-first hybrid mobile application for financial product collection and internal management portals using Angular and Java/Spring Boot, implementing CI/CD pipelines with Jenkins.
Scientific Initiation Researcher at Escola Politecnica da USP
August 1, 2017 - December 31, 2017
Researched and implemented software factory standards and reusable code libraries to optimize development processes for university-industry partnerships.
Software Developer at G&J Corporation
October 1, 2016 - August 31, 2017
Soccer Kingdom - Gamified Mobile App. Built a gamified hybrid mobile app featuring real-time tournaments, token economies, and character customization. Designed backend matchmaking and score tracking logic using Node.js.
Web Developer at Universidad UDI
February 1, 2016 - October 31, 2016
Developed institutional web applications including a student representative voting system and mobility program management tools. Managed database migrations using Oracle and SQL Server.
Mobile Developer at Group vive+ Specialist Center
September 1, 2015 - January 31, 2016
Developed the institution's mobile application from scratch enabling patients to access health services remotely. Tools used: Java, Objective-C, Node.js, MySQL.

Education

Postgraduate - Software Engineering at Universidad Antonio Narino, Bogota
January 1, 2021 - July 28, 2026
Systems Engineering at Universidad de Investigacion y Desarrollo (UDI), Bucaramanga
January 1, 2019 - July 28, 2026
Exchange at Universidad San Martin de Porres (Peru)
January 11, 2030 - July 28, 2026
Postgraduate - Software Engineering at Universidad Antonio Narino, Bogota
January 1, 2021 - January 1, 2021
Systems Engineering at Universidad de Investigacion y Desarrollo (UDI), Bucaramanga
January 1, 2019 - January 1, 2019
Exchange at Universidad San Martin de Porres at Universidad San Martin de Porres (Peru)
January 11, 2030 - July 28, 2026
Apprentice researcher at Escola Politecnica da USP (Brazil)
January 1, 2017 - December 31, 2017

Qualifications

Add your qualifications or awards here.

Industry Experience

Financial Services, Transportation & Logistics, Healthcare, Software & Internet, Travel & Hospitality, Professional Services, Retail, Other

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Beginner
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