Matías is available for hire

Matías Schapiro

Verified Expert in Engineering

Software Architect and Back-end Developer

Buenos Aires, Argentina

Toptal member since February 17, 2015

Expertise

Algorithms AWS Solutions C#AWS VB.NET Data Science SQL Windows Development JavaScript REST API Python HFT Zapier Development eBay API

Bio

Matías has been programming as a hobby since he was six years old. He started with GW Basic and Quick Basic in the eighties and has used a lot of technologies since then. Now, he focuses on C#. After finishing his master's degree in finance, he has tackled many projects related to capital markets and quantitative algorithms. Matías loves software and finance and would be an excellent candidate for this kind of project.

Portfolio

Katsura LLC

C++, C#, Algorithmic Trading, Socket Programming, High-frequency Trading (HFT)...

AXA

Azure, C#, Azure App Service, Azure Cosmos DB, Kubernetes, SQL Server 2016...

CTF Capital

Amazon Web Services (AWS), BitMEX, Blockchain, AWS IAM, MySQL, Node.js...

Experience

Algorithms - 20 years
C# - 12 years
Design Patterns - 10 years
Capital Markets - 10 years
Software Architecture - 10 years
Amazon Web Services (AWS) - 7 years
Python - 5 years
.NET Core - 5 years

Availability

Full-time

Preferred Environment

Amazon Web Services (AWS), C#, .NET, Visual Studio Code (VS Code), Visual Studio

The most amazing...

...software I've built is a financial market enterprise application for valuation and trading. I built this application from scratch using C#, Flex, and MySQL.

Work Experience

C++ Developer

2022 - PRESENT

Katsura LLC

Revamped and debugged a legacy client-server app that sends trading signals to options traders.
Developed trading indicators based on processing more than three billion quotes per day.
Built automated strategies for canceling orders based on different rules.
Designed security mechanisms for enforcing the security of the communication between client and server.

Technologies: C++, C#, Algorithmic Trading, Socket Programming, High-frequency Trading (HFT), Sockets, Trading Systems

Solutions Architect

2021 - 2021

AXA

Helped with the analysis and design of the migration of several on-prem applications to the cloud.
Aided with the design and implementation of an automated platform that supports all the company's migration efforts.
Worked with several application architects to find the best cloud technologies and practices for migrating their apps to the cloud.

Technologies: Azure, C#, Azure App Service, Azure Cosmos DB, Kubernetes, SQL Server 2016, Single Sign-on (SSO), Auth0

Software Architect

2019 - 2020

CTF Capital

Designed the architecture of an automated trading system capable of interoperating with different crypto markets to execute strategies that are easily programmed by an operator.
Proposed and designed the security policies and good practices for the different parts of the software and the development lifecycle.
Investigated and proposed the right technology stack for the software to be built, according to the company's needs and the skills of the team.
Worked heavily with the developers on solving performance issues related to memory management, processor consumption, and network latency issues.

Technologies: Amazon Web Services (AWS), BitMEX, Blockchain, AWS IAM, MySQL, Node.js, .NET Core, Amazon EC2, Amazon Simple Queue Service (SQS)

C# Developer

2009 - 2020

Doctor Sapix Finance Software

Designed and developed financial applications from scratch, i.e., fixed income apps, derivative tools, and a portfolio management application for family offices.
Planned and programmed quantitative finance algorithms for different financial models and assets, e.g., Black-Scholes, Nelson-Siegel.
Created, developed, and used web APIs based on different technologies.
Managed products, particularly concerning the improvement of design and development of new features.
Developed different interfaces for retrieving data from Bloomberg, Yahoo Finance, Morningstar, and other financial information sources.
Processed financial accounts statements and activity records from different banks, e.g., Pershing, Deutsche Bank, UBS, Merrill Lynch, etc.
Created an automated testing tool using Cucumber.
Designed domain models based on a solid understanding of financial markets and current and potential customers' needs.

Technologies: Microsoft SQL Server, MySQL, Adobe Flex, C#

Senior Full-stack Developer

2018 - 2018

Refunite.org (Top-volunteer)

Developed from scratch and improved existing Python and Node API endpoints that were consumed by a mobile app.
Helped to improve the AWS infrastructure required by the project.
Improved the way new developers could set up and run the development and testing environments in a faster way.

Technologies: Amazon Web Services (AWS), Node.js, Python

Lead Developer

2016 - 2017

Sanders & Phillips

Led a team composed of remote developers, including fellow Toptalers.
Contributed to an important migration from a legacy ASP.NET (WebForms) core application to Salesforce.
Improved the performance of different tools and processes developed in .NET and SQL Server.
Worked with different health system vendors that provided confidential documents that we had to synchronized with our local systems every day.
Worked with final users in order to design and create new out-of-the-box features that allowed the company to work in a better way.

Technologies: Salesforce API, ASP.NET, C#, .NET

Lead Developer

2015 - 2016

Sim1Ems

Developed and maintained an order management system that integrates with marketplaces like Amazon, eBay, and Walmart.
Oversaw the full architecture and cloud environment both in Azure and AWS.
Worked on algorithmic strategies for auto-pricing tools (used for competing with other sellers on marketplaces like Amazon or eBay).
Worked with AdWords API and data science projects in order to maximize sales and reduce costs when using AdWords and Google Shopping.

Technologies: Amazon Web Services (AWS), Node.js, Azure, C#, .NET

Part-time Teacher

2013 - 2015

ORT Argentina

Helped students to develop their capstone project in this technical high school's programming specialization.

Technologies: Microsoft SQL Server, MySQL, PHP, Android, .NET

.NET Developer

2003 - 2009

Sappco SRL

Developed for websites and desktop environments, mostly in C#, for offshore companies.
Developed and designed a framework from scratch in C# for a large-scale company.
Created security-related software for a government bureau, mostly in regards to digital signature validation on official documents.
Programmed Objective-C desktop apps for marketing projects.
Developed C libraries for Arduino projects.
Built performance tools and algorithms for measuring the consumption of energy in different buildings.

Technologies: C#

Datawarehouse Developer

2002 - 2003

Comsoft

Conducted ETL design and development for different data warehouses.
Programmed MDX queries.
Designed and developed cubes.
Created dashboards and balanced scorecard tools.
Built data warehouses from scratch for large-sized companies like Coca Cola, Tenaris, and Alto Paraná.

Technologies: ETL, OLAP, SQL Server Analysis Services (SSAS), Microsoft SQL Server

Programmer

2001 - 2002

BHDM

Developed web features for large-scale companies, e.g., Hewlett Packard and The Discovery Channel.
Designed databases under different technologies, including SQL Server, MySQL, and PostgreSQL.
Designed and developed APIs. Developed interfaces between client components developed in Adobe Flash and server components developed in ASP/PHP.
Developed email marketing tools for clients like Hewlett Packard and The Discovery Channel.
Conducted data warehousing.

Technologies: MySQL, Microsoft SQL Server, PHP, Active Server Pages (ASP)

Experience

Doctor Sapix Portfolio Manager

A cloud application for financial portfolio management.

BonosArgentinos.com (Argentinian Bonds)

A fixed-income platform for analyzing Argentinian bonds. This is an application I built from scratch to help local analysts to make decisions on fixed income assets. This app connects with Yahoo Finance and Bloomberg to get data (prices), and processes the data generating useful information for the analysts, e.g., Nelson & Siegel curves, IRR, etc.

Energy Performance Tools for Ezenics

http://www.ezenics.com

Developed different tools in C# mostly related to the energy sector. These tools are used to minimize the consumption of energy in buildings.

Doctor Sapix Derivative Analyzer

Desktop application for analyzing different kinds of financial derivatives. I implemented quantitative algorithms for search strategies in options and futures markets.

ManageUP PRM

I collaborated on the creation of this tool. It's an application for the health industry, which helps health organizations to organize themselves and produce results in a better way.

PowerEngage App for Aviata, Inc.

I collaborated with Aviata, Inc., developing the Power Engage App for Mac OS. Power Engage is a preinstalled application on computers that helps users and hardware companies to manage their relationships, allowing the user to register hardware components, manage warranties, etc.

A3Equipo

http://www.a3software.com/a3equipo-gestion_departamentos_rrhh.htm

Designed and developed different components for A3Equipo, a product related to human resources offered by A3Software (Wolters Kluwer).

A3Asesor

http://www.a3software.com/a3asesor-asesorias_y_despachos_profesionales.htm

Designed and developed different components for A3Asesor, a law-related product offered by A3Software (Wolters Kluwer).

Robot Controller for Arduino Car

I developed a robot controller for an Arduino car. This controller is capable of remembering actions and executing them in the future, e.g., you can schedule a set of movements for each motor, turn on/off the sensors, etc. The car is controlled by using a C# app that connects with the car by using serial communication over Bluetooth.

C# Software for Android APK Decompilation and Analysis

I developed a tool that allows a company that works with software patents and licenses to analyze different Android mobile apps in order to check if these apps use any of the packages that are protected by their licenses. The idea behind this tool is to automate a very time-consuming process that was done manually. The software is capable of analyzing hundreds of mobile apps without human intervention and provides a report of the packages that are used on them.

MWS Amazon Auto-pricer

This tool allows a company to manage the prices of the products that they offer on Amazon automatically. The tool operates based on rules, like the minimum price the company can afford, and how much profit they expect based on the product's cost. This tool aims to maximize both the time the seller has the best offer compared to its competitors and the profit made out of its sales.

Education

2009 - 2010

Master's Degree in Finance

Universidad Torcuato Di Tella (UTDT) - Buenos Aires, Argentina

2001 - 2007

Engineer's Degree in Systems Engineering

Universidad Tecnológica Nacional (UTN) - Buenos Aires, Argentina

Certifications

MAY 2022 - PRESENT

Introduction to Containers with Docker, Kubernetes and OpenShift

IBM

DECEMBER 2019 - DECEMBER 2022

AWS Certified Security - Specialty

AWS - Amazon Web Services

DECEMBER 2018 - DECEMBER 2021

AWS Certified Solutions Architect Associate

AWS

AUGUST 2018 - PRESENT

Deep Learning Explained (edX - DAT236x)

Microsoft | via edX

AUGUST 2018 - PRESENT

Python for Data Science (edX - DSE200x)

University of San Diego | via edX

Skills

Libraries/APIs

Google Ads API, Amazon Marketplace Web Service (MWS), LINQ, REST APIs, Salesforce API, PayPal API, Node.js, eBay API, Facebook API, jQuery, OpenZeppelin, Sockets, NetMQ

Tools

Amazon Simple Queue Service (SQS), NuGet, TortoiseSVN, Zapier, Visual Studio, AWS IAM, Git, Jira, Xcode, GitHub, Mercurial, Subversion (SVN), Azure App Service, Auth0, Ganache, MongoDB Atlas, OpenAI Gym, Spyder

Languages

Visual Basic .NET (VB.NET), C#, SQL, Python, Flash ActionScript, JavaScript, Active Server Pages (ASP), PHP, Haskell, C, Pascal, HTML, C++, Objective-C, Solidity, Go

Frameworks

.NET Core, NUnit, NHibernate, ASP.NET, Adobe Flex, .NET, ASP.NET Web API, ASP.NET MVC, Truffle

Paradigms

Inversion of Control, Concurrent Programming, Dependency Injection, Unit Testing, Design Patterns, Object-oriented Programming (OOP), Business Intelligence (BI), ETL, REST, Functional Programming, OLAP, Socket Programming

Platforms

Amazon EC2, Amazon Web Services (AWS), AWS Lambda, Azure, Windows, Blockchain, Visual Studio Code (VS Code), Linode, AWS Elastic Beanstalk, Heroku, Xamarin, Windows Phone 8, Arduino, MacOS, Android, Kubernetes, Docker, Jupyter Notebook

Industry Expertise

Banking & Finance, High-frequency Trading (HFT), Trading Systems

Storage

Amazon S3 (AWS S3), MySQL, Microsoft SQL Server, SQL Server Analysis Services (SSAS), Elasticsearch, PostgreSQL, NoSQL, MongoDB, Azure Cosmos DB, SQL Server 2016, Redis

Other

Algorithms, Software Architecture, Lambda Functions, Data Structures, Solution Architecture, Architecture, AWS Certified Solution Architect, APIs, Quantitative Finance, Capital Markets, Relational Database Services (RDS), IoC, Adobe Flash Builder, Web Services, Domain-driven Design (DDD), Product Management, Investment Banking, BitMEX, Finance, Systems, Engineering, APK, Multithreading, Amazon API Gateway, Amazon Route 53, Ajax, Single Sign-on (SSO), Containers, Algorithmic Trading, Development, FIX Protocol

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