Guillermo E. Mazzoni
Tegucigalpa,Honduras
Summary
Senior Software Engineer with over ten years of experience in designing and implementing innovative software solutions across various industries. Expertise in AWS architectures and CI/CD pipelines, with a proven track record in building internal developer portals and managing large-scale data ingestion systems. Strong leadership skills demonstrated in multicultural teams within both startup and enterprise environments, focusing on operational efficiency and high-quality deliverables.
Overview
14
14
years of professional experience
1
1
Certification
Work History
Senior Software & Platform Engineer at Fanduel via Zeptta
X-Team
08.2025 - Current
- Architected and implemented Datadog Workflows, delivering automated operational pipelines for incident response, deployment governance, and infrastructure tasks-reducing manual intervention and increasing platform reliability.
- Developed Datadog Self-Serve Applications, including the AWS Service Management App, enabling engineering teams to safely initiate infrastructure operations through audited, UI-driven workflows-accelerating delivery and reducing DevOps bottlenecks.
- Performed a comparative analysis of Backstage vs. Datadog IDP, evaluating extensibility, ecosystem maturity, governance models, developer experience; produced a strategic recommendation and roadmap for the organization's Internal Developer Platform direction.
Technical Lead
LynxLabs
01.2025 - 08.2025
- As Technical Lead, I was responsible for guiding the engineering team across BE, FE and DevOps while ensuring high-quality delivery of a secure and scalable E-Banking platform.
- Defined coding standards, reviewed pull requests, and ensured compliance with best practices in FE, BE, DevOps, Infra, and QA.
- Introduced automation into the development lifecycle, optimizing CI/CD pipelines and reducing deployment friction.
- Worked closely with the Product Owner to refine requirements and align technical strategy with business goals.
- Supported and mentored developers, providing guidance on complex technical challenges while nurturing professional growth.
- Actively participated in daily standups, sprint planning, and retrospectives to keep the team aligned and productive.
- Technologies/Tools: Node, React, React Native, PostgreSQL, AWS (IaC), CI/CD pipelines, GitHub, Docker, Terraform, Strapi
Senior Software Engineer & DevOps at News Corp
X-Team
02.2025 - 07.2025
- Developed and maintained CI/CD pipelines and GitHub Actions workflows for a large monorepo, improving deployment reliability and reducing manual overhead.
- Authored and enhanced JavaScript/TypeScript scripts and micro-applications to automate development operations (monitoring, tracking, and reporting).
- Built micro-reporting tools and dashboards to surface key metrics-blocked PRs, deployment frequency, pipeline status-to stakeholders and drive continuous improvement.
- Re-engineered cloud-services onboarding processes, delivering reusable 'cloud asset' libraries and build/deploy toolkits that accelerated developer productivity.
- Implemented full-stack developer platform solutions using Backstage's plugin architecture, including responsive UI components with Material-UI, Express backend services with authentication, webhook integrations, and comprehensive error handling with retry logic.
- Technologies: AWS, CI/CD, Github Actions, JavaScript, TypeScript, Node, React, Backstage
Lead Software Engineer
X-Team Core
12.2021 - 01.2025
- Manage a team of over 10+ software engineers to ensure effective task delegation, thorough code reviews, and compliance with stakeholder specifications.
- Oversaw the development and optimization of XHQ, X-Team's central platform for managing internal invoicing, partner relations, and community engagement activities.
- Delivered a new invoice submission interface that aligned with established design system patterns to enhance the user experience.
- Technologies/Tools: Node, React, TypeScript, Postgres, Sequelize, AWS (EC2, ECS, ECR, Lambda, SQS, SNS, API Gateway, ALB, ELB, Route 53, RDS, Dynamo, DocumentDB, ElastiCache Redis, Secret Manager, Parameter Store, CloudWatch), AWS CodePipeline, AWS CodeBuild, Docker, Mocha, Jest, Storybook, Swagger
Senior Software Engineer at Sema
X-Team
04.2021 - 11.2021
- Managed a team of 4 software engineers which included task delegation, code review, and assurance the stakeholder specifications were met.
- Architected and implemented an internal code Quality Control tool as a Chrome extension that was used as an add-on to GitHub using React.
- Developed an accompanying code Quality Control web application that showcased all activity within the chrome extension using NextJS.
- Trusted to deploy the production-ready Chrome extension and web application (using AWS ECS and Jenkins).
- Designed and implemented a robust system for analytics (using Segment, Amplitude, Google Analytics, Mode, and MongoDB Atlas).
- Technologies/Tools: NextJs, React + Chrome Extension, Okta, MongoDB, Bulma, Mocha, Jest, Circle CI, Docker, AWS (EC2, ECS, ECR, Lamda, SQS, SNS, DocumentDB, ElastiCache, CloudWatch)
Senior Software Engineer
Estoca
São Paulo, Brazil
05.2020 - 04.2021
- Building the largest fulfillment center network in LatAm, reducing E-Commerce costs and delivery time.
- Responsible for the system architecture and web development for the WMS.
- Decoupled a monolithic platform implemented in Django into a server and server-less micro-services -AWS architecture in Node.
- Responsible for adding and setting up subdomains for APIs by utilizing AWS/NGINX.
- Technologies/Tools used: Django/Python, Node ES6+, AWS Services(EC2, ECS, ECR, S2, RDS, Lambda, API Gateway, SES, SNS, ElasticCache Redis, CodeBuild, Code Pipeline), MongoDB, PostgreSQL, Bitbucket, CircleCI, Google Analytics, Google Data Studio
Software Engineer
Sygns
Berlin, Germany
10.2018 - 04.2021
- Responsible for the system architecture and web development of Sygns platform.
- Developed a sustainable and scalable eCommerce ERP system that integrates with Shopify, Google Cloud, AWS, MongoDB Atlas, Shipcloud, Zendesk, and Tableau.
- Involved in the implementation of modules such as auth, sales, inventory, quotes, warehouse, shipping, reports.
- Responsible for the BI unit. Working in data mining and enhancing data collection procedures to include information that is relevant for building analytic systems.
- Close collaboration with the product owner and staff to break requirements into features for posterior development, in order to fulfill the internal requirements/features of the daily operations.
- Technologies/Tools used: MEAN (NodeJS ES2015), LiquidJS, AWS, Google Cloud Services, Heroku, GitHub, Bitbucket, Tableau, Google Analytics, CircleCI, HTML5, CCS3, Bootstrap, Mocha
Software Engineer at Priority Payments
BairesDev
12.2019 - 05.2020
- Implementation of a robust payment platform capable of processing diverse payment methods, including credit cards, virtual cards, ACH transactions, and checks, ensuring scalability, security, and operational efficiency.
- Technologies/Tools: Node, React, Kafka, Elastic Search, SQL Server, Travis CI, Mocha, Docker, AWS, Kubernetes Microservices, Swagger
Technology and Innovation Manager
Laureate International Universities
03.2018 - 12.2019
- Develop and standardize a seamless customer experience for The Global Operations teams -Web development, ETL Scripts, and systems/platforms integrations.
- Responsible for defining the architecture and managing the execution for implementations of tools and/or platforms (Agile methodology) that provide support to students, faculty, and staff Using: MEAN/MERN Stack, Django.
- Manage the BI unit for Global Operations, and Digital Product Solutions providing individual and collective visibility on all the aspects of the support delivered to students, faculty, and staff through integrations with Tableau, MicroStrategy and Google Analytics.
- Responsibilities: Provide accurate and updated metrics in a timely manner -Data mining, Extending the company's data with third party sources of information when needed, Doing ad-hoc analysis and presenting results in a clear manner, Processing, cleansing, and verifying the integrity of data used for analysis, According to report results, develop strategies to effectively handle current business trends.
- Technologies/Tools used: AWS, AWS Elemental, Linux, CentOS, AngularJS, Express, NodeJs(ES2015), React, Django/Python, PostgreSQL, SQL Server, MongoDB, Firebas, HTML5, CCS3, Bootstrap, GitHub, CircleCI, Google Analytics, Big Query, Tableau, MicroStrategy
Tech Team Lead
Laureate International Universities
02.2017 - 03.2018
Tech Specialist
Laureate International Universities
10.2016 - 02.2017
Software Engineer
SAP
Palo Alto
03.2016 - 10.2016
- Responsible for the system architecture and web development for the reservation system HanaHaus of the Innovation Center -SV.
- Break requirements into features for posterior development to ensure the best user experience using an agile methodology.
- Tools as Git, Google Analytics, CircleCI, and Heroku were utilized to the grant integrity and scalability of the platform.
- Worked closely with the product owner, and UX designers in order to ensure the best user experience.
- Technologies/Tools used: AngularJS, Django/Python, PostgreSQL, CCS3, Bootstrap, Git, CircleCI, Google Analytics, Heroku, Squarespace, Linux
Full Stack Developer
Agile Solutions
07.2015 - 10.2016
- As Lead Back End developer responsible for defining and implementing the system core using Nodejs for ABP (Agile Business Platform) a modular system.
- Managed HANA implementation for HANA Live and BPC.
- Developed the system core for the platform (ORM), using SAP Hana DB (Tables, Calculation Views) -data modeling, oData Services standards, and Express with Nodejs.
- Worked as Lead/Full-Stack developer for the web development of the supplier module of ABP.
- On both projects worked closely with the product owner, architect, and designers, in order to meet customer, needs using an agile methodology.
- Technologies/Tools used: AngularJS, NodeJS, Express, SAP HANA, SAP ABAP, CSS3, HTML5, GitHub, Google Analytics, Linux
Developer
2build.it Dev Co
01.2014 - 08.2014
- Responsible for defining the architecture and implementing ODOO (ERP) for multiple mid/ small Honduran companies.
- Worked alongside with the clients to meet requirements.
- Periodical training was delivered to the company's staff.
- Technologies/Tools used: Python, JavaScript, Ajax, Web Services, MySQL, XML, JSON, HTML5, CCS3
System Admin Intern
Laureate International Universities
01.2012 - 12.2012
- Responsible for the configurations, maintenance, and monitoring of the local servers (Linux and Windows Server) and network on LNO's office in Tegucigalpa.
- Technologies/Tools used: Cisco Shell, vSphere, Kaseya, SQL Server, Sharepoint, Active Directory
Education
Computer Science - Computer Software Engineering
Universidad Tecnológica Centroamericana
01.2015
Bachelor of Science - BS - High School/Secondary Diplomas and Certificates
La Estancia School
01.2010
Skills
- ReactTS
- NodeTS
- AWS
- Internal Developer Portals (Backstage, Datadog)
- CI/CD pipelines
- Cloud infrastructure
- Software architecture
- Team leadership
- Microservices architecture
Certification
- Generative AI for Software Development
- CNNA Exploration: Routing Fundamentals (200 - 101)
- CNNA Exploration: Network Fundamentals (100 - 101)
- Kubernetes Basics for DevOps
Languages
- Spanish
- English
- Portuguese
Timeline
Senior Software & Platform Engineer at Fanduel via Zeptta
X-Team
08.2025 - Current
Senior Software Engineer & DevOps at News Corp
X-Team
02.2025 - 07.2025
Technical Lead
LynxLabs
01.2025 - 08.2025
Lead Software Engineer
X-Team Core
12.2021 - 01.2025
Senior Software Engineer at Sema
X-Team
04.2021 - 11.2021
Senior Software Engineer
Estoca
05.2020 - 04.2021
Software Engineer at Priority Payments
BairesDev
12.2019 - 05.2020
Software Engineer
Sygns
10.2018 - 04.2021
Technology and Innovation Manager
Laureate International Universities
03.2018 - 12.2019
Tech Team Lead
Laureate International Universities
02.2017 - 03.2018
Tech Specialist
Laureate International Universities
10.2016 - 02.2017
Software Engineer
SAP
03.2016 - 10.2016
Full Stack Developer
Agile Solutions
07.2015 - 10.2016
Developer
2build.it Dev Co
01.2014 - 08.2014
System Admin Intern
Laureate International Universities
01.2012 - 12.2012
Computer Science - Computer Software Engineering
Universidad Tecnológica Centroamericana
Bachelor of Science - BS - High School/Secondary Diplomas and Certificates
La Estancia School