Walter Argüello
Senior Software Engineer
Alajuela
Summary
Linkedin - Walter Argüello
Experienced software developer with over a decade of experience in various technologies. Proven track record as a self-motivated full-stack developer, adept at navigating all phases of the Software Development Life Cycle. Skilled in frontend, backend, and mobile application development, with a knack for proposing innovative solutions. Collaborative team player thriving in fast-paced settings, driven by a passion for continuous learning and exploration of new technologies.
Overview
16
16
years of professional experience
2
2
Languages
Work History
Senior Software Engineer Technical Lead
Jowasoft
01.2025 - Current
- Enhance software functionality by proactively identifying and resolving complex technical issues.
- Mentoring junior developers, promoting professional growth and significantly boosting team productivity.
- Develop scalable applications using agile methodologies, ensuring timely project delivery and high-quality results.
- Coordinate software deployments, including new features, updates, and fixes, to maximize system performance.
- Expertise in software development across various technologies including C#, Java Spring, TypeScript, Angular, React, Flutter, and Nest.
- Lead technical teams in the development of cloud-based applications on platforms such as AWS and Azure.
- Utilize relational and non-relational databases, including MongoDB, MySQL, and SQL Server, to enhance data management and application performance.
Senior Developer
Aubrant Digital LTDA
01.2021 - 01.2025
- Participated in the learning, maintenance, and support of many different systems for an important tennis event that lasted for several weeks.
- I worked on supporting many applications for a financial entity, solving problems using various technologies in the backend and frontend.
- Maintained constant interaction with members from different business units to understand processes and requirements, to develop new features and fixes. Responsible for migrating different applications from using SQL Server databases to AWS Aurora.
- I collaborated with the DevOps team to migrate different applications to new continuous integration pipelines using Jenkins and Octopus.
- I worked in data transformation and integration to generate different types of metrics, allowing customers to identify transaction types, frauds, and more for a SaaS Solution.
- I collaborated with different teams to accomplish customer on boardings, new integration requirements, and to bring support for utilized modules at the level of data modeling, back-end, and front-end.
- Most of the solutions were developed with C#, Angular, SQL Server, .NET Framework, and .NET Core.
Senior Software Engineer Technical Lead
Jowasoft
01.2018 - 01.2021
- Responsible for leading technical teams developing apps in React, Android, iOS, and Flutter, websites, cloud-based systems (AWS, Azure), productive operational processes, and automation using technologies such as Flutter, React, Java Spring, .Net, MongoDB, MySQL, and Pentaho.
- Led the development team responsible for defining the architecture, development, testing, and deployment of different company solutions: electronic invoicing, digital marketing, and APIs.
- Led the development team to adopt new technologies, investigating their use to improve the business, automating processes, and developing innovative products and services (IoT). Responsible for managing the customer relationship and team workload to meet project deliverables.
- Worked hand in hand with international professionals on improvements to business plans and digital strategies.
- Some programming languages used during development are C#, Java Spring, as well as relational and non-relational databases such as MariaDB, MySQL, and front-end frameworks such as CSS, NodeJS, TypeScript, Angular, Flutter, React and Redux.
Technical Leader and Senior Developer
Centauro Solutions
01.2015 - 01.2018
- Responsible for leading technical teams in developing e-commerce apps (Android and iOS), websites (.NET, Hippo), cloud-based systems (AWS, Azure), electronic invoicing (React, AWS), and productive operational processes automation (React, Java Spring, MongoDB, MySQL).
- Worked in a software automation for product campaigns and promotions for different regions in US for McDonalds in React.
- Led the Centauro Development team to define the architecture, development, testing, and deployment of an e-commerce app that manages over 2,000 concurrent users.
- Responsible for managing the customer relationship and team workload to meet project deliverables. Responsible for overseeing the architectural definition for different solutions: electronic invoicing, gated communities administration, and commercial promotions using beacons.
- Collaborated with the ADA Compliance team.
- Software developed using technologies like Java Spring, C#, MongoDB, SQL Server, WCF, API, AWS, and Azure.
- Designed and executed performance tests to identify potential bottlenecks, making necessary optimizations for smoother user experiences.
Senior Web Developer
Semdrive
02.2014 - 01.2015
- Developed an SEO tool to implement business rules and metrics generation that automated site analysis and reduced time from 3 days to 2 hours. The main technologies used were Azure, SQL Server, Web roles, and Worker roles. My main responsibilities were requirements analysis, system design, software coding, and Integration testing. Developed and maintained C#.Net and Web Services Applications.
Full-Stack Developer
MDG Developers and COINCA S.A.
10.2012 - 02.2014
- Responsible for developing a software solution integrating third-party systems (Salesforce, ERP, and Emergency Call Trunk) with Road Assistance Operational systems. Developed a system that tracked geo-positioning for all machinery and equipment for sugar cane production.
Full-Stack Developer
Innova Technology
04.2010 - 05.2012
- Responsible for developing a platform to manage all operational processes for universities to comply with new regulations issued by the Educational Ministry of the Dominican Republic. Led the migration of 32 universities from their operational systems to the Akademia platform. The migration included data and process migration.
Education
Bachelor of Science - Computer Programming
Universidad De Costa Rica
San José, Costa Rica 05.2001 -
No Degree - Mobile Development in Android
Universidad Cenfotec
San José, SJ 05.2001 -
No Degree - Mobile Development in IOS
Universidad Cenfotec
San José, SJ 05.2001 -
No Degree - Flutter: IOS And Android Development
Udemy
05.2001 -
Skills
Programming Languages: C#, Net, Net Core, Java Spring, Angular, React, Svelte, Node, and Swift
Test Automation Tools: Selenium, Protractor, Apache JMeter, Espresso, and Enzyme
RDBMS/Query language: MySQL, SQL Server, MongoDB, DB2, AWS Aurora
Timeline
Senior Software Engineer Technical Lead
Jowasoft
01.2025 - Current
Senior Developer
Aubrant Digital LTDA
01.2021 - 01.2025
Senior Software Engineer Technical Lead
Jowasoft
01.2018 - 01.2021
Technical Leader and Senior Developer
Centauro Solutions
01.2015 - 01.2018
Senior Web Developer
Semdrive
02.2014 - 01.2015
Full-Stack Developer
MDG Developers and COINCA S.A.
10.2012 - 02.2014
Full-Stack Developer
Innova Technology
04.2010 - 05.2012
Bachelor of Science - Computer Programming
Universidad De Costa Rica
05.2001 -
No Degree - Mobile Development in Android
Universidad Cenfotec
05.2001 -
No Degree - Mobile Development in IOS
Universidad Cenfotec
05.2001 -
No Degree - Flutter: IOS And Android Development
Udemy
05.2001 -
Languages
Spanish
Native or Bilingual
English
Full Professional