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Ariel Joaquin

@arieljoaquin

.NET software developer at Waystar who modernized healthcare claims workflows and migrated legacy systems.

Argentina
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At Waystar, I contributed to replacing production Pick Basic processes with .NET services in healthcare claims and billing workflows. I also built features and resolved defects in data-processing pipelines, including payer and provider file integrations.

At ANSES, I led the migration of large-scale COBOL systems to .NET and directed development across application and service layers for Argentina's National Social Security Administration.

At Global Processing S.A., I designed the initial service-oriented architecture for a credit card processing platform in .NET Core. I separated shared functionality into authentication, authorization and configuration APIs, and introduced token authentication, Redis caching and API client generation.

At the Ministry of Labor, Employment & Social Security, I led development of Inspector Digital, an offline-capable inspection app that synced field results with central servers and cut the compliance-verification cycle from months to days. I grew into technical leadership in 2007, running an 8-developer team.

Experience

Work history, roles, and key accomplishments

Waystar logoWA

Sr. Developer

Sep 2022 - Sep 2026 (4 years)

Contributed to replacing multiple production Pick Basic processes with .NET services as part of a legacy modernization effort in core healthcare claims and billing workflows. Built new features and resolved defects across healthcare data-processing pipelines, including custom text file parsing and generation for payer/provider integrations.

Inovalon logoIN

Sr. Developer

Dec 2021 - Aug 2022 (8 months)

Delivered new features and bug fixes for healthcare data platforms using Aurelia, .NET, Liquibase and Oracle. Worked within weekly sprints, using Azure API Management and Azure DevOps for service integration and delivery.

ANSES logoAN

Technical Leader & Developer

ANSES

Oct 2014 - Sep 2021 (6 years 11 months)

Led the migration of large-scale COBOL systems to .NET, modernizing core infrastructure for one of Argentina's largest citizen-facing social security platforms. Directed analysis, design and development of intranet and internet applications across frontend, backend and service layers.

GS

Part-Time Consultant

Global Processing S.A.

Jun 2015 - Jan 2018 (2 years 7 months)

Designed the initial service-oriented architecture for the company's core credit card processing platform in .NET Core, splitting shared functionality into dedicated authentication/authorization and configuration APIs. Re-engineered the system's middleware and web API layer, introducing Identity Server-based token authentication, Redis caching, and Swagger/Autorest-driven client generation.

MS

Technical Leader

Ministry of Labor, Employment & Social Security

Feb 2004 - Sep 2014 (10 years 7 months)

Led development of Inspector Digital, a VB.NET application letting field inspectors conduct workplace inspections on netbooks, work offline, and sync survey results with central servers on-site, cutting the compliance-verification cycle from months to days. Grew into technical leadership in 2007, running an 8-developer team and coordinating daily with the testing manager to approve release candida

DM

ASP & SQL Server Developer

DMFusion

Nov 2001 - Jan 2004 (2 years 2 months)

Built and maintained intranet/internet applications and client websites using ASP, DHTML, JavaScript and SQL Server.

Education

Degrees, certifications, and relevant coursework

Universidad de Palermo logoUP

Universidad de Palermo

Bachelor's Degree, Computer Science

2009 - 2010

Pursued a Bachelor's Degree in Computer Science at Universidad de Palermo from 2009 to 2010.

IO

Instituto Técnico O.R.T.

Computer Systems Analyst, Computer Systems

2003 - 2008

Completed studies as a Computer Systems Analyst at Instituto Técnico O.R.T. from 2003 to 2008.

Universidad de Buenos Aires logoUA

Universidad de Buenos Aires

Bachelor of Computer Science, Computer Science

2001 - 2003

Pursued a Bachelor of Computer Science degree at the University of Buenos Aires from 2001 to 2003, but did not complete the program.

EO

Escuela Técnica O.R.T.

Technical Bachelor Diploma, Computer Science

1995 - 2000

Earned a Technical Bachelor Diploma in Computer Science from Escuela Técnica O.R.T. from 1995 to 2000.

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