cryptosasa

Full Stack Blockchain Engineer

💻 Former Amazon engineer passionate about turning early-stage ideas into scalable products. With experience across North America, I specialize in full-stack development, technical architecture, and aligning technical execution with business goals.

I’ve held roles ranging from Senior Software Engineer and Tech Lead to Consultant, contributing to projects at Fortune 500 companies and venture-backed startups. Notably, I’ve worked on ventures that secured $1M+ in seed funding and developed solutions in decentralized finance (DeFi), e-commerce, and SaaS. Proficient in Python, TypeScript, AWS, and agile methodologies, I am adept at building end-to-end solutions, managing complex technical challenges, and bridging the gap between engineering and business goal. In addition to leading and mentoring teams, I'm equally effective as a sole developer, adapting to the project’s needs.

Specialties: Full-Stack Web Development, Technical Architecture, Decentralized Applications, Web3 Development, Ethereum, Microservices, Technical Product Management, Agile Methodologies

Experience: 8 years

Yearly salary: $200,000

Hourly rate: $90

Nationality: 🇨🇦 Canada

Residency: 🇨🇦 Canada

Experience

Software Engineer

Amazon

2020 - 2023

Contributed to the design and development of a new full-stack web application architecture for the Seller Central framework, leveraging React, TypeScript, Redux, and AWS infrastructure. Achieved a 30% operational cost reduction, 20% latency cut, and a 20% boost in customer satisfaction scores for over 1 million daily users. Executed a strategic migration of 10+ billion records from PostgreSQL to DynamoDB using Scala, Amazon EMR, and Apache Spark, resulting in a 20% faster query response, 30% savings on storage costs, and maintaining a leading TPS rate of 3 million, ranking top 5 across Amazon. Revamped our team's application by implementing a technical roadmap that addressed the selling partners' biggest pain points, resulting in a 5x increase in review volume, and a 20% increase in customer satisfaction scores.

Developer

CRA

2017 - 2020

Crafted an impactful testing framework for a Java Swing app, leading to a surge in test production and devising a Java GUI Account Reservation System for streamlined data prep; this, combined with my significant contributions in scripting and test case development, earned me a nomination for the 2018 Co-Op Student of the Year.

Skills

architecture

aws

ethereum

ethereumjs

gnosis

javascript

node

python

sales-engineer

smart-contract

solidity

typescript

web3js

full-stack

english

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