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Andres
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Andres

Buenos Aires, Argentina --:--:--

Andres Osinski is a Senior Back-End Engineer with over 21 years of professional experience in software and systems. His experience ranges from independent contractor to CEO, working with startups to Fortune 500s. He is strongest with backend web services and systems architecture for on-prem and cloud applications; with Deep Python relational databases and Linux/Unix aptitudes, coupled with a passion for product design and rapid delivery on multidisciplinary teams. Andres is an elite developer who is passionate about mentoring developers and scaling teams. He is looking for positions as a Senior Backend Engineer, Platform Engineer, or Engineering Manager.

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Skills
Years
1
2
3
4
5
6
7
8
9
10+
Pandas
UNIX
MySQL
Linux
Python
C#
PHP
Data pipelines/Big Data
AWS
PostgresSQL
.NET Framework
DevOps
Serverless apps
Django
VB.NET
AngularJS
.NET
RESTful APIs
Red Hat
jQuery
AIX
Web apps
Athena
EC2
Solaris
Presto
EBS
Lambda
DNS
Step Functions
RDS
Requirements Gathering
CloudFront
React
Documentation
Zappa
Ansible
Google Analytics
CI
A/B Testing
GIS
Open Source
APIs
Data Lakes
ETL
Developer Personality

Independent

Collaborative

Trailblazer

Conservative

Generalist

Specialist

Planner

Doer

Idealist

Pragmatist

Abstraction

Control

100
50
0
50
100
Feature Experience

RESTFul Web Services

Data Pipelines

Relational DBs

Authentication and Auth Services

MODERATE
EXTENSIVE
EXPERT
Cultural Experience

IT services

AgTech and GIS

Consumer services

Finance

MODERATE
EXTENSIVE
EXPERT
Portfolio

Volo Apps

Senior Consultant

Work Experience : 2021-2022

Developed data processing pipeline for an undisclosed hedge fund. Worked on security master product for storing financial data on millions of equities. Designed and developed security master product and data pipelines for an undisclosed NY-based hedge fund.

  • Mentored engineers in Python, SQL, agile methodologies, and requirements gathering
  • Developed large analytics and reporting queries for worldwide equities data
  • Developed framework for ETL pipelines based on AWS and open-source data lake products

Technologies:  Python, AWS Athena/Presto, PostgreSQL, AWS Lambda, Serverless Framework, Django, Pandas, AWS Step Functions, SQL, Open Source, Data Lakes,

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Autominuto

CEO

Work Experience : 2020-2021

Took on a languishing consumer app connecting drivers to auto mechanics and scaled to product-market fit. Rebuilt the consumer app from scratch. Implemented operations software and dashboards. Took on existing, languishing products to connect drivers with mechanics. Achieved product-market fit in 6 months. Recruited a multi-disciplinary team to refactor and then rebuild the product from scratch. Iteratively refined product, website, ad campaigns, and service through metrics-driven, A/B testing, and funnel methodologies to increase customer reach, improved main app, and service functionality and customer retention with the help of various analytics products to test and validate hypotheses.

  • Developed backend web service and admin panel for support staff to consolidate business metrics and improve customer service
  • Achieved funding by applying to private and government-sponsored startup accelerator programs

Technologies:  Django, Python, React, REST, Zappa, Analytics, Mobile Web Development, Integrations, A/B Testing, Serverless

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Ceres Imaging

Senior Platform Engineer

Categories

Work Experience : 2018-2020

First software engineering hire. Developed web services to support a customer-facing application for serving science imagery for end users. Created auth services, modeled all user data, maintained app servers, scaled team to a dozen engineers, maintained operations interface and dashboards, and created internal APIs for various micro-services. Led growth of software engineering team from first software engineer hire to a 12-person team and scaled customer-facing infrastructure to several hundred large clients

  • Developed core consumer-facing RESTful web service for serving and viewing customer imagery
  • Developed and maintained the internal admin software for flight operations
  • Developed, maintained, and migrated the company’s auth services from an external provider to an in-house solution

Technologies:  Django, Python, Django REST Framework, Postgres, Ansible, CI, SQL tuning, GIS, APIs

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Feastly

Senior Software Engineer

Categories

Work Experience : 2015-2017

Maintained and developed web frontend and REST backend API for consumer-facing applications and web pages. Created SQL reports and data dashboards for real-time business metrics. Maintained applications servers and production Postgres database. Maintained entire operations backend and customer orders platform. Optimized analytics and reporting backend for mission-critical business insights

  • Created multiple frontends, mobile-friendly web views for all new user-facing functionality
  • Drastically improved codebase quality and delivery velocity through additions of testing, documentation, and language best practices

Technologies:  Django, Python, Django REST Framework, AngularJS, PostgreSQL, MySQL, jQuery, AWS, EC2, EBS, DNS, CloudFront, RDS, Documentation

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Previous Roles

Categories

Work Experience : 2004-2015
  • Web Developer at Generalist Web Development Consulting (2010-2015)
  • Lead Software Engineer for FictionCity.NET (2010-2012)
  • Research and Development at LPA SRL (2008-2009)
  • UNIX System Administrator at IBM Corp, Global Resources Division (2005-2008)
  • Trainee at BitX S.A. (2004-2005)

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