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.
Hire AndresDeveloped 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.
Technologies: Python, AWS Athena/Presto, PostgreSQL, AWS Lambda, Serverless Framework, Django, Pandas, AWS Step Functions, SQL, Open Source, Data Lakes,
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.
Technologies: Django, Python, React, REST, Zappa, Analytics, Mobile Web Development, Integrations, A/B Testing, Serverless
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
Technologies: Django, Python, Django REST Framework, Postgres, Ansible, CI, SQL tuning, GIS, APIs
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
Technologies: Django, Python, Django REST Framework, AngularJS, PostgreSQL, MySQL, jQuery, AWS, EC2, EBS, DNS, CloudFront, RDS, Documentation